[maven-release-plugin] prepare release avaje-ebeanorm-6.15.2

Added support for custom database functions that have multiple arguments

.gitignore

@@ -1,13 +1,17 @@
 *.autofetch
 *.sql
+*.orig
 .classpath
 .project
 .settings/
 target/
 logs/
 log/
+ebean-autotune.xml
+ebean-profiling*.xml
 /db
 /mydb.db
+!src/test/ddl-review/*.sql
 
 
 # Intellij project files

README.md

@@ -5,16 +5,7 @@
 
 Ebean ORM
 ==============
-[http://ebean-orm.github.io/](http://ebean-orm.github.io/ "Ebean ORM's Website")
-
-
-Maven Dependency
-----------------
-    <dependency>
-      <groupId>org.avaje.ebeanorm</groupId>
-      <artifactId>avaje-ebeanorm</artifactId>
-      <version>4.7.3</version>
-    </dependency>
+[https://ebean-orm.github.io/](http://ebean-orm.github.io/ "Ebean ORM's Website")
 
 
 [Maven central - avaje-ebeanorm](http://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22org.avaje.ebeanorm%22%20AND%20a%3A%22avaje-ebeanorm%22 "maven central ebeanorm")

pom.xml

@@ -9,11 +9,11 @@
 
   <groupId>org.avaje.ebeanorm</groupId>
   <artifactId>avaje-ebeanorm</artifactId>
-  <version>4.8.1</version>
+  <version>6.15.2</version>
   <packaging>jar</packaging>
 
   <name>avaje-ebeanorm</name>
-  <url>http://www.avaje.org</url>
+  <url>http://ebean-orm.github.io/</url>
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
@@ -43,6 +43,12 @@
 
   <dependencies>
 
+    <dependency>
+      <groupId>org.jetbrains</groupId>
+      <artifactId>annotations</artifactId>
+      <version>13.0</version>
+    </dependency>
+
     <dependency>
       <groupId>javax.persistence</groupId>
       <artifactId>persistence-api</artifactId>
@@ -55,6 +61,14 @@
       <version>1.7.7</version>
     </dependency>
 
+    <!-- provided scope for Spring boot loader classpath scanning support -->
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-loader</artifactId>
+      <version>1.2.7.RELEASE</version>
+      <scope>provided</scope>
+    </dependency>
+
     <!-- provided scope for JsonNode support -->
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
@@ -103,10 +117,24 @@
     <dependency>
       <groupId>org.postgresql</groupId>
       <artifactId>postgresql</artifactId>
-      <version>9.4-1201-jdbc41</version>
+      <version>9.4-1202-jdbc41</version>
       <scope>provided</scope>
     </dependency>
 
+    <!--<dependency>-->
+      <!--<groupId>oracle</groupId>-->
+      <!--<artifactId>oracle-jdbc</artifactId>-->
+      <!--<version>7.0</version>-->
+      <!--<scope>test</scope>-->
+    <!--</dependency>-->
+
+    <!--<dependency>-->
+      <!--<groupId>microsoft</groupId>-->
+      <!--<artifactId>sqlserver-jdbc</artifactId>-->
+      <!--<version>4.2</version>-->
+      <!--<scope>test</scope>-->
+    <!--</dependency>-->
+
     <dependency>
       <groupId>com.squareup.okhttp</groupId>
       <artifactId>okhttp</artifactId>
@@ -124,15 +152,17 @@
     <dependency>
       <groupId>org.avaje.ebeanorm</groupId>
       <artifactId>avaje-ebeanorm-agent</artifactId>
-      <version>4.5.1</version>
+      <version>4.8.1</version>
       <scope>test</scope>
     </dependency>
-        
+
+    <!-- Provided scope so that the H2HistoryTrigger can live in Ebean core
+         and not require a separate module for it -->
     <dependency>
       <groupId>com.h2database</groupId>
       <artifactId>h2</artifactId>
-      <version>1.4.182</version>
-      <scope>test</scope>
+      <version>1.4.189</version>
+      <scope>provided</scope>
     </dependency>
     
     <dependency>
@@ -157,31 +187,11 @@
     </dependency>
 
     <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <version>4.11</version>
-      <scope>test</scope>
-    </dependency>
-    
-    <dependency>
-      <groupId>org.hamcrest</groupId>
-      <artifactId>hamcrest-integration</artifactId>
-      <version>1.3</version>
-      <scope>test</scope>
-    </dependency>    
-
-    <dependency>
-      <groupId>org.mockito</groupId>
-      <artifactId>mockito-core</artifactId>
-      <version>1.9.5</version>
-      <scope>test</scope>
-    </dependency>
-
-    <dependency>
-      <groupId>ch.qos.logback</groupId>
-      <artifactId>logback-classic</artifactId>
-      <version>1.0.9</version>
+      <groupId>org.avaje.composite</groupId>
+      <artifactId>avaje-composite-testing</artifactId>
+      <version>1.1</version>
       <scope>test</scope>
+      <type>pom</type>
     </dependency>
 
     <dependency>
@@ -209,7 +219,7 @@
       <plugin>
         <groupId>org.avaje.ebeanorm</groupId>
         <artifactId>avaje-ebeanorm-mavenenhancer</artifactId>
-        <version>4.5.1</version>
+        <version>4.8.1</version>
         <executions>
           <!--   Not going to enhance Model bean -->
           <execution>
@@ -263,11 +273,11 @@
         <artifactId>maven-javadoc-plugin</artifactId>
         <version>2.9.1</version>
         <configuration>
-          <doctitle>Ebean 4</doctitle>
+          <doctitle>Ebean 6</doctitle>
           <overview>src/main/java/com/avaje/ebean/overview.html</overview>
           <source>1.8</source>
           <doclet>org.avaje.doclet.PygmentsDoclet</doclet>
-          <excludePackageNames>com.avaje.ebeaninternal.*:com.avaje.ebean.util</excludePackageNames>
+          <excludePackageNames>com.avaje.ebeaninternal.*:com.avaje.ebean.util:com.avaje.ebean.dbmigration.ddlgeneration:com.avaje.ebean.dbmigration.migration:com.avaje.ebean.dbmigration.migrationreader:com.avaje.ebean.dbmigration.model</excludePackageNames>
           <docletArtifact>
             <groupId>org.avaje</groupId>
             <artifactId>pygments-doclet</artifactId>

src/main/java/com/avaje/ebean/AdminAutofetch.java

@@ -1,137 +0,0 @@
-package com.avaje.ebean;
-
-/**
- * Administrative control of Autofetch during runtime.
- */
-public interface AdminAutofetch {
-
-  /**
-   * Return true if profiling is enabled.
-   */
-  boolean isProfiling();
-
-  /**
-   * Set to true to enable profiling.
-   */
-  void setProfiling(boolean enable);
-
-  /**
-   * Return true if autoFetch automatic query tuning is enabled.
-   */
-  boolean isQueryTuning();
-
-  /**
-   * Set to true to enable autoFetch automatic query tuning.
-   */
-  void setQueryTuning(boolean enable);
-
-  /**
-   * Returns the rate which profiling is collected. This is an int between 0 and
-   * 100.
-   */
-  double getProfilingRate();
-
-  /**
-   * Set the rate at which profiling is collected after the base.
-   * 
-   * @param rate
-   *          a int between 0 and 100.
-   */
-  void setProfilingRate(double rate);
-
-  /**
-   * Return the number of queries profiled after which profiling is collected at
-   * a percentage rate.
-   */
-  int getProfilingBase();
-
-  /**
-   * Set a base number of queries to profile per query point.
-   * <p>
-   * After this amount of profiling has been obtained profiling is collected at
-   * the Profiling Percentage rate.
-   * </p>
-   */
-  void setProfilingBase(int profilingBase);
-
-  /**
-   * Return the minimum number of queries profiled before autoFetch will start
-   * automatically tuning the queries.
-   * <p>
-   * This could be one which means start autoFetch tuning after the first
-   * profiling information is collected.
-   * </p>
-   */
-  int getProfilingMin();
-
-  /**
-   * Set the minimum number of queries profiled per query point before autoFetch
-   * will automatically tune the queries.
-   * <p>
-   * Increasing this number will mean more profiling is collected before
-   * autoFetch starts tuning the query.
-   * </p>
-   */
-  void setProfilingMin(int autoFetchMinThreshold);
-
-  /**
-   * Fire a garbage collection (hint to the JVM). Assuming garbage collection
-   * fires this will gather the usage profiling information.
-   */
-  String collectUsageViaGC();
-
-  /**
-   * This will take the current profiling information and update the "tuned
-   * query detail".
-   * <p>
-   * This is done periodically and can also be manually invoked.
-   * </p>
-   * 
-   * @return a summary of the updates that occurred
-   */
-  String updateTunedQueryInfo();
-
-  /**
-   * Clear all the tuned query info.
-   * <p>
-   * Should only need do this for testing and playing around.
-   * </p>
-   * 
-   * @return the amount of tuned query information cleared.
-   */
-  int clearTunedQueryInfo();
-
-  /**
-   * Clear all the profiling information.
-   * <p>
-   * This means the profiling information will need to be re-gathered.
-   * </p>
-   * <p>
-   * Should only need do this for testing and playing around.
-   * </p>
-   * 
-   * @return the amount of profiled information cleared.
-   */
-  int clearProfilingInfo();
-
-  /**
-   * Clear the query execution statistics.
-   */
-  void clearQueryStatistics();
-
-  /**
-   * Return the number of queries tuned by AutoFetch.
-   */
-  int getTotalTunedQueryCount();
-
-  /**
-   * Return the size of the TuneQuery map.
-   */
-  int getTotalTunedQuerySize();
-
-  /**
-   * Return the size of the profile map.
-   */
-  int getTotalProfileSize();
-
-}

src/main/java/com/avaje/ebean/AutoTune.java

@@ -0,0 +1,14 @@
+package com.avaje.ebean;
+
+/**
+ * Administrative control of AutoTune during runtime.
+ */
+public interface AutoTune {
+
+  /**
+   * Fire a garbage collection (hint to the JVM). Assuming garbage collection
+   * fires this will gather remaining usage profiling information.
+   */
+  void collectProfiling();
+
+}

src/main/java/com/avaje/ebean/BeanState.java

@@ -33,6 +33,38 @@ public interface BeanState {
    */
   boolean isDirty();
 
+  /**
+   * This can be called with true to disable lazy loading on the bean.
+   */
+  void setDisableLazyLoad(boolean disableLazyLoading);
+
+  /**
+   * Set the loaded state of the property given it's name.
+   *
+   * <p>
+   *   Typically this would be used to set the loaded state of a property
+   *   to false to ensure that the specific property is excluded from a
+   *   stateless update.
+   * </p>
+   *
+   * <pre>{@code
+   *
+   *   // populate a bean via say JSON
+   *   User user = ...;
+   *
+   *   // set loaded state on the email property to false so that
+   *   // the email property is not included in a stateless update
+   *   Ebean.getBeanState(user).setPropertyLoaded("email", false);
+   *
+   *   user.update();
+   *
+   * }</pre>
+   *
+   *
+   * This will throw an IllegalArgumentException if the property is unknown.
+   */
+  void setPropertyLoaded(String propertyName, boolean loaded);
+
   /**
    * For partially populated beans returns the properties that are loaded on the
    * bean.

src/main/java/com/avaje/ebean/CallableSql.java

@@ -80,7 +80,7 @@ public interface CallableSql {
   /**
    * Return the label that is put into the transaction log.
    */
-  public String getLabel();
+  String getLabel();
 
   /**
    * Set the label that is put in the transaction log.

src/main/java/com/avaje/ebean/DRawSqlColumnsParser.java

@@ -45,7 +45,7 @@ final class DRawSqlColumnsParser {
     String colInfo = sqlSelect.substring(start, pos++);
     colInfo = colInfo.trim();
 
-    String[] split = colInfo.split(" ");
+    String[] split = colInfo.split("\\s(?=[^\\)]*(?:\\(|$))");
     if (split.length > 1) {
       ArrayList<String> tmp = new ArrayList<String>(split.length);
       for (int i = 0; i < split.length; i++) {
@@ -80,17 +80,18 @@ final class DRawSqlColumnsParser {
     return new ColumnMapping.Column(indexPos++, sb.toString(), split[split.length - 1]);
   }
 
-  private int nextComma() {
+  private void nextComma() {
     boolean inQuote = false;
+    int inbrackets = 0;
     while (pos < end) {
       char c = sqlSelect.charAt(pos);
-      if (c == '\'') {
-        inQuote = !inQuote;
-      } else if (!inQuote && c == ',') {
-        return pos;
+      if (c == '\'') inQuote = !inQuote;
+      else if (c == '(') inbrackets++;
+      else if (c == ')') inbrackets--;
+      else if (!inQuote && inbrackets == 0 && c == ',') {
+        return;
       }
       pos++;
     }
-    return pos;
   }
 }

src/main/java/com/avaje/ebean/DRawSqlParser.java

@@ -24,7 +24,7 @@ class DRawSqlParser {
   private int placeHolderAndWhere;
   private int placeHolderHaving;
   private int placeHolderAndHaving;
-  private boolean hasPlaceHolders;
+  private final boolean hasPlaceHolders;
 
   private int selectPos = -1;
   private int distinctPos = -1;
@@ -46,6 +46,7 @@ class DRawSqlParser {
 
   private DRawSqlParser(String sqlString) {
     sqlString = sqlString.trim();
+    sqlString = sqlString.replace('\n',' ');
     this.sql = sqlString;
     this.hasPlaceHolders = findAndRemovePlaceHolders();
     this.textParser = new SimpleTextParser(sqlString);
@@ -98,19 +99,7 @@ class DRawSqlParser {
   }
 
   private boolean hasPlaceHolders() {
-    if (placeHolderWhere > -1) {
-      return true;
-    }
-    if (placeHolderAndWhere > -1) {
-      return true;
-    }
-    if (placeHolderHaving > -1) {
-      return true;
-    }
-    if (placeHolderAndHaving > -1) {
-      return true;
-    }
-    return false;
+    return placeHolderWhere > -1 || placeHolderAndWhere > -1 || placeHolderHaving > -1 || placeHolderAndHaving > -1;
   }
 
   /**
@@ -132,8 +121,7 @@ class DRawSqlParser {
       // trim of distinct keyword
       String distinct = preWhereExprSql.substring(0, 9);
       if (!distinct.equalsIgnoreCase("distinct ")) {
-        throw new RuntimeException("Expecting [" + preWhereExprSql
-            + "] to start with \"select distinct\"");
+        throw new RuntimeException("Expecting [" + preWhereExprSql + "] to start with \"select distinct\"");
       }
       preWhereExprSql = preWhereExprSql.substring(9);
     }

src/main/java/com/avaje/ebean/Ebean.java

@@ -2,7 +2,6 @@ package com.avaje.ebean;
 
 import java.util.Collection;
 import java.util.HashMap;
-import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
@@ -10,6 +9,7 @@ import java.util.concurrent.ConcurrentHashMap;
 import javax.persistence.OptimisticLockException;
 import javax.persistence.PersistenceException;
 
+import org.jetbrains.annotations.Nullable;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -22,7 +22,7 @@ import com.avaje.ebean.text.json.JsonContext;
 /**
  * This Ebean object is effectively a singleton that holds a map of registered
  * {@link EbeanServer}s. It additionally provides a convenient way to use the
- * 'default/primary' EbeanServer.
+ * 'default' EbeanServer.
  * <p>
  * If you are using a Dependency Injection framework such as
  * <strong>Spring</strong> or <strong>Guice</strong> you will probably
@@ -101,7 +101,7 @@ import com.avaje.ebean.text.json.JsonContext;
  * specific database.
  * </p>
  * 
- * <pre> {@code
+ * <pre>{@code
  *
  *   // Get access to the Human Resources EbeanServer/Database
  *   EbeanServer hrDb = Ebean.getServer("hr");
@@ -146,9 +146,9 @@ public final class Ebean {
     private final Object monitor = new Object();
 
     /**
-     * The 'default/primary' EbeanServer.
+     * The 'default' EbeanServer.
      */
-    private EbeanServer primaryServer;
+    private EbeanServer defaultServer;
 
     private ServerManager() {
 
@@ -162,31 +162,31 @@ public final class Ebean {
 
         } else {
           // look to see if there is a default server defined
-          String primaryName = PrimaryServer.getPrimaryServerName();
-          logger.debug("primaryName:" + primaryName);
-          if (primaryName != null && primaryName.trim().length() > 0) {
-            primaryServer = getWithCreate(primaryName.trim());
+          String defaultName = PrimaryServer.getDefaultServerName();
+          logger.debug("defaultName:" + defaultName);
+          if (defaultName != null && defaultName.trim().length() > 0) {
+            defaultServer = getWithCreate(defaultName.trim());
           }
         }
-      } catch (RuntimeException e) {
+      } catch (Throwable e) {
         logger.error("Error trying to create the default EbeanServer", e);
-        throw e;
+        throw new RuntimeException(e);
       }
     }
 
-    private EbeanServer getPrimaryServer() {
-      if (primaryServer == null) {
+    private EbeanServer getDefaultServer() {
+      if (defaultServer == null) {
         String msg = "The default EbeanServer has not been defined?";
         msg += " This is normally set via the ebean.datasource.default property.";
-        msg += " Otherwise it should be registered programatically via registerServer()";
+        msg += " Otherwise it should be registered programmatically via registerServer()";
         throw new PersistenceException(msg);
       }
-      return primaryServer;
+      return defaultServer;
     }
 
     private EbeanServer get(String name) {
       if (name == null || name.length() == 0) {
-        return primaryServer;
+        return defaultServer;
       }
       // non-synchronized read
       EbeanServer server = concMap.get(name);
@@ -217,16 +217,16 @@ public final class Ebean {
     /**
      * Register a server so we can get it by its name.
      */
-    private void register(EbeanServer server, boolean isPrimaryServer) {
-      registerWithName(server.getName(), server, isPrimaryServer);
+    private void register(EbeanServer server, boolean isDefaultServer) {
+      registerWithName(server.getName(), server, isDefaultServer);
     }
     
-    private void registerWithName(String name, EbeanServer server, boolean isPrimaryServer) {
+    private void registerWithName(String name, EbeanServer server, boolean isDefaultServer) {
       synchronized (monitor) {
         concMap.put(name, server);
         syncMap.put(name, server);
-        if (isPrimaryServer) {
-          primaryServer = server;
+        if (isDefaultServer) {
+          defaultServer = server;
         }
       }
     }
@@ -254,12 +254,22 @@ public final class Ebean {
    * }</pre>
    * 
    * @param name
-   *          the name of the server, use null for the 'default server'
+   *          the name of the server, can use null for the 'default server'
    */
   public static EbeanServer getServer(String name) {
     return serverMgr.get(name);
   }
 
+  /**
+   * Returns the default EbeanServer.
+   * <p>
+   * This is equivalent to <code>Ebean.getServer(null);</code>
+   * </p>
+   */
+  public static EbeanServer getDefaultServer() {
+    return serverMgr.getDefaultServer();
+  }
+
   /**
    * Return the ExpressionFactory from the default server.
    * <p>
@@ -278,23 +288,23 @@ public final class Ebean {
    * </p>
    */
   public static ExpressionFactory getExpressionFactory() {
-    return serverMgr.getPrimaryServer().getExpressionFactory();
+    return serverMgr.getDefaultServer().getExpressionFactory();
   }
 
   /**
    * Register the server with this Ebean singleton. Specify if the registered
    * server is the primary/default server.
    */
-  public static void register(EbeanServer server, boolean isPrimaryServer) {
-    serverMgr.register(server, isPrimaryServer);
+  public static void register(EbeanServer server, boolean defaultServer) {
+    serverMgr.register(server, defaultServer);
   }
 
   /**
    * Backdoor for registering a mock implementation of EbeanServer as the default  server.
    */
-  protected static EbeanServer mock(String name, EbeanServer server, boolean isPrimaryServer) {
-    EbeanServer originalPrimaryServer = serverMgr.primaryServer;
-    serverMgr.registerWithName(name, server, isPrimaryServer);
+  protected static EbeanServer mock(String name, EbeanServer server, boolean defaultServer) {
+    EbeanServer originalPrimaryServer = serverMgr.defaultServer;
+    serverMgr.registerWithName(name, server, defaultServer);
     return originalPrimaryServer;
   }
   
@@ -311,7 +321,7 @@ public final class Ebean {
    * </p>
    */
   public static Object nextId(Class<?> beanType) {
-    return serverMgr.getPrimaryServer().nextId(beanType);
+    return serverMgr.getDefaultServer().nextId(beanType);
   }
 
   /**
@@ -359,7 +369,7 @@ public final class Ebean {
    * </p>
    */
   public static Transaction beginTransaction() {
-    return serverMgr.getPrimaryServer().beginTransaction();
+    return serverMgr.getDefaultServer().beginTransaction();
   }
 
   /**
@@ -370,7 +380,7 @@ public final class Ebean {
    * 
    */
   public static Transaction beginTransaction(TxIsolation isolation) {
-    return serverMgr.getPrimaryServer().beginTransaction(isolation);
+    return serverMgr.getDefaultServer().beginTransaction(isolation);
   }
 
   /**
@@ -425,7 +435,7 @@ public final class Ebean {
    * }</pre>
    */
   public static Transaction beginTransaction(TxScope scope){
-    return serverMgr.getPrimaryServer().beginTransaction(scope);
+    return serverMgr.getDefaultServer().beginTransaction(scope);
   }
 
   /**
@@ -433,7 +443,7 @@ public final class Ebean {
    * in scope.
    */
   public static Transaction currentTransaction() {
-    return serverMgr.getPrimaryServer().currentTransaction();
+    return serverMgr.getDefaultServer().currentTransaction();
   }
 
   /**
@@ -446,21 +456,21 @@ public final class Ebean {
    * @throws PersistenceException if there is no currently active transaction
    */
   public static void register(TransactionCallback transactionCallback) throws PersistenceException {
-    serverMgr.getPrimaryServer().register(transactionCallback);
+    serverMgr.getDefaultServer().register(transactionCallback);
   }
 
   /**
    * Commit the current transaction.
    */
   public static void commitTransaction() {
-    serverMgr.getPrimaryServer().commitTransaction();
+    serverMgr.getDefaultServer().commitTransaction();
   }
 
   /**
    * Rollback the current transaction.
    */
   public static void rollbackTransaction() {
-    serverMgr.getPrimaryServer().rollbackTransaction();
+    serverMgr.getDefaultServer().rollbackTransaction();
   }
 
   /**
@@ -489,7 +499,7 @@ public final class Ebean {
    * }</pre>
    */
   public static void endTransaction() {
-    serverMgr.getPrimaryServer().endTransaction();
+    serverMgr.getDefaultServer().endTransaction();
   }
 
   /**
@@ -500,7 +510,7 @@ public final class Ebean {
    * </p>
    */
   public static Map<String, ValuePair> diff(Object a, Object b) {
-    return serverMgr.getPrimaryServer().diff(a, b);
+    return serverMgr.getDefaultServer().diff(a, b);
   }
 
   /**
@@ -523,7 +533,6 @@ public final class Ebean {
    *   public class Order { ...
    * 	
    * 	   @OneToMany(cascade=CascadeType.ALL, mappedBy="order")
-   * 	   @JoinColumn(name="order_id")
    * 	   List<OrderDetail> details;
    * 	   ...
    *   }
@@ -537,7 +546,7 @@ public final class Ebean {
    * </p>
    */
   public static void save(Object bean) throws OptimisticLockException {
-    serverMgr.getPrimaryServer().save(bean);
+    serverMgr.getDefaultServer().save(bean);
   }
 
   /**
@@ -545,14 +554,14 @@ public final class Ebean {
    * want to explicitly insert it.
    */
   public static void insert(Object bean) {
-    serverMgr.getPrimaryServer().insert(bean);
+    serverMgr.getDefaultServer().insert(bean);
   }
-  
+
   /**
    * Insert a collection of beans.
    */
-  public static void insert(Collection<?> beans) {
-    serverMgr.getPrimaryServer().insert(beans);
+  public static void insertAll(Collection<?> beans) {
+    serverMgr.getDefaultServer().insertAll(beans);
   }
 
   /**
@@ -576,7 +585,7 @@ public final class Ebean {
    * }</pre>
    */
   public static void markAsDirty(Object bean) throws OptimisticLockException {
-    serverMgr.getPrimaryServer().markAsDirty(bean);
+    serverMgr.getDefaultServer().markAsDirty(bean);
   }
 
   /**
@@ -616,28 +625,21 @@ public final class Ebean {
    * @see ServerConfig#setUpdateChangesOnly(boolean)
    */
   public static void update(Object bean) throws OptimisticLockException {
-    serverMgr.getPrimaryServer().update(bean);
+    serverMgr.getDefaultServer().update(bean);
   }
 
   /**
    * Update the beans in the collection.
    */
-  public static void update(Collection<?> beans) throws OptimisticLockException {
-    serverMgr.getPrimaryServer().update(beans);
-  }
-
-  /**
-   * Save all the beans from an Iterator.
-   */
-  public static int save(Iterator<?> iterator) throws OptimisticLockException {
-    return serverMgr.getPrimaryServer().save(iterator);
+  public static void updateAll(Collection<?> beans) throws OptimisticLockException {
+    serverMgr.getDefaultServer().updateAll(beans);
   }
 
   /**
    * Save all the beans from a Collection.
    */
-  public static int save(Collection<?> beans) throws OptimisticLockException {
-    return serverMgr.getPrimaryServer().save(beans);
+  public static int saveAll(Collection<?> beans) throws OptimisticLockException {
+    return serverMgr.getDefaultServer().saveAll(beans);
   }
 
   /**
@@ -651,7 +653,7 @@ public final class Ebean {
    * @return the number of associations deleted (from the intersection table).
    */
   public static int deleteManyToManyAssociations(Object ownerBean, String propertyName) {
-    return serverMgr.getPrimaryServer().deleteManyToManyAssociations(ownerBean, propertyName);
+    return serverMgr.getDefaultServer().deleteManyToManyAssociations(ownerBean, propertyName);
   }
 
   /**
@@ -669,7 +671,7 @@ public final class Ebean {
    * </p>
    */
   public static void saveManyToManyAssociations(Object ownerBean, String propertyName) {
-    serverMgr.getPrimaryServer().saveManyToManyAssociations(ownerBean, propertyName);
+    serverMgr.getDefaultServer().saveManyToManyAssociations(ownerBean, propertyName);
   }
 
   /**
@@ -689,46 +691,65 @@ public final class Ebean {
    *          the property we want to save
    */
   public static void saveAssociation(Object ownerBean, String propertyName) {
-    serverMgr.getPrimaryServer().saveAssociation(ownerBean, propertyName);
+    serverMgr.getDefaultServer().saveAssociation(ownerBean, propertyName);
   }
 
   /**
    * Delete the bean.
    * <p>
+   * This will return true if the bean was deleted successfully or JDBC batch is being used.
+   * </p>
+   * <p>
    * If there is no current transaction one will be created and committed for
    * you automatically.
    * </p>
+   * <p>
+   * If the bean is configured with <code>@SoftDelete</code> then this will perform a soft
+   * delete rather than a hard/permanent delete.
+   * </p>
+   * <p>
+   * If the Bean does not have a version property (or loaded version property) and
+   * the bean does not exist then this returns false indicating that nothing was
+   * deleted. Note that, if JDBC batch mode is used then this always returns true.
+   * </p>
    */
-  public static void delete(Object bean) throws OptimisticLockException {
-    serverMgr.getPrimaryServer().delete(bean);
+  public static boolean delete(Object bean) throws OptimisticLockException {
+    return serverMgr.getDefaultServer().delete(bean);
+  }
+
+  /**
+   * Delete the bean in permanent fashion (will not use soft delete).
+   */
+  public static boolean deletePermanent(Object bean) throws OptimisticLockException {
+    return serverMgr.getDefaultServer().deletePermanent(bean);
   }
 
   /**
    * Delete the bean given its type and id.
    */
   public static int delete(Class<?> beanType, Object id) {
-    return serverMgr.getPrimaryServer().delete(beanType, id);
+    return serverMgr.getDefaultServer().delete(beanType, id);
   }
 
   /**
    * Delete several beans given their type and id values.
    */
-  public static void delete(Class<?> beanType, Collection<?> ids) {
-    serverMgr.getPrimaryServer().delete(beanType, ids);
+  public static void deleteAll(Class<?> beanType, Collection<?> ids) {
+    serverMgr.getDefaultServer().deleteAll(beanType, ids);
   }
 
   /**
-   * Delete all the beans from an Iterator.
+   * Delete all the beans in the Collection.
    */
-  public static int delete(Iterator<?> it) throws OptimisticLockException {
-    return serverMgr.getPrimaryServer().delete(it);
+  public static int deleteAll(Collection<?> beans) throws OptimisticLockException {
+    return serverMgr.getDefaultServer().deleteAll(beans);
   }
 
   /**
-   * Delete all the beans from a Collection.
+   * Delete permanent all the beans in the Collection (will not use soft delete).
    */
-  public static int delete(Collection<?> c) throws OptimisticLockException {
-    return delete(c.iterator());
+  public static int deleteAllPermanent(Collection<?> beans) throws OptimisticLockException {
+    return serverMgr.getDefaultServer().deleteAllPermanent(beans);
   }
 
   /**
@@ -739,7 +760,7 @@ public final class Ebean {
    * </p>
    */
   public static void refresh(Object bean) {
-    serverMgr.getPrimaryServer().refresh(bean);
+    serverMgr.getDefaultServer().refresh(bean);
   }
 
   /**
@@ -760,7 +781,7 @@ public final class Ebean {
    *          the property name of the List Set or Map to refresh.
    */
   public static void refreshMany(Object bean, String manyPropertyName) {
-    serverMgr.getPrimaryServer().refreshMany(bean, manyPropertyName);
+    serverMgr.getDefaultServer().refreshMany(bean, manyPropertyName);
   }
 
   /**
@@ -788,7 +809,7 @@ public final class Ebean {
    *          the id value
    */
   public static <T> T getReference(Class<T> beanType, Object id) {
-    return serverMgr.getPrimaryServer().getReference(beanType, id);
+    return serverMgr.getDefaultServer().getReference(beanType, id);
   }
 
   /**
@@ -834,7 +855,7 @@ public final class Ebean {
    *          the properties to sort the list by
    */
   public static <T> void sort(List<T> list, String sortByClause) {
-    serverMgr.getPrimaryServer().sort(list, sortByClause);
+    serverMgr.getDefaultServer().sort(list, sortByClause);
   }
 
   /**
@@ -883,8 +904,9 @@ public final class Ebean {
    * @param id
    *          the id value
    */
+  @Nullable
   public static <T> T find(Class<T> beanType, Object id) {
-    return serverMgr.getPrimaryServer().find(beanType, id);
+    return serverMgr.getDefaultServer().find(beanType, id);
   }
 
   /**
@@ -896,7 +918,7 @@ public final class Ebean {
    * </p>
    */
   public static SqlQuery createSqlQuery(String sql) {
-    return serverMgr.getPrimaryServer().createSqlQuery(sql);
+    return serverMgr.getDefaultServer().createSqlQuery(sql);
   }
 
   /**
@@ -909,7 +931,7 @@ public final class Ebean {
    *          the name of the query
    */
   public static SqlQuery createNamedSqlQuery(String namedQuery) {
-    return serverMgr.getPrimaryServer().createNamedSqlQuery(namedQuery);
+    return serverMgr.getDefaultServer().createNamedSqlQuery(namedQuery);
   }
 
   /**
@@ -927,7 +949,7 @@ public final class Ebean {
    * </p>
    */
   public static SqlUpdate createSqlUpdate(String sql) {
-    return serverMgr.getPrimaryServer().createSqlUpdate(sql);
+    return serverMgr.getDefaultServer().createSqlUpdate(sql);
   }
 
   /**
@@ -936,7 +958,7 @@ public final class Ebean {
    * @see CallableSql
    */
   public static CallableSql createCallableSql(String sql) {
-    return serverMgr.getPrimaryServer().createCallableSql(sql);
+    return serverMgr.getDefaultServer().createCallableSql(sql);
   }
 
   /**
@@ -959,7 +981,7 @@ public final class Ebean {
    * }</pre>
    */
   public static SqlUpdate createNamedSqlUpdate(String namedQuery) {
-    return serverMgr.getPrimaryServer().createNamedSqlUpdate(namedQuery);
+    return serverMgr.getDefaultServer().createNamedSqlUpdate(namedQuery);
   }
 
   /**
@@ -987,7 +1009,7 @@ public final class Ebean {
    */
   public static <T> Query<T> createNamedQuery(Class<T> beanType, String namedQuery) {
 
-    return serverMgr.getPrimaryServer().createNamedQuery(beanType, namedQuery);
+    return serverMgr.getDefaultServer().createNamedQuery(beanType, namedQuery);
   }
 
   /**
@@ -1015,7 +1037,7 @@ public final class Ebean {
    *          the object query
    */
   public static <T> Query<T> createQuery(Class<T> beanType, String query) {
-    return serverMgr.getPrimaryServer().createQuery(beanType, query);
+    return serverMgr.getDefaultServer().createQuery(beanType, query);
   }
 
   /**
@@ -1074,7 +1096,7 @@ public final class Ebean {
    */
   public static <T> Update<T> createNamedUpdate(Class<T> beanType, String namedUpdate) {
 
-    return serverMgr.getPrimaryServer().createNamedUpdate(beanType, namedUpdate);
+    return serverMgr.getDefaultServer().createNamedUpdate(beanType, namedUpdate);
   }
 
   /**
@@ -1108,7 +1130,7 @@ public final class Ebean {
    */
   public static <T> Update<T> createUpdate(Class<T> beanType, String ormUpdate) {
 
-    return serverMgr.getPrimaryServer().createUpdate(beanType, ormUpdate);
+    return serverMgr.getDefaultServer().createUpdate(beanType, ormUpdate);
   }
 
   /**
@@ -1116,7 +1138,7 @@ public final class Ebean {
    */
   public static <T> CsvReader<T> createCsvReader(Class<T> beanType) {
 
-    return serverMgr.getPrimaryServer().createCsvReader(beanType);
+    return serverMgr.getDefaultServer().createCsvReader(beanType);
   }
 
   /**
@@ -1173,7 +1195,7 @@ public final class Ebean {
    */
   public static <T> Query<T> createQuery(Class<T> beanType) {
 
-    return serverMgr.getPrimaryServer().createQuery(beanType);
+    return serverMgr.getDefaultServer().createQuery(beanType);
   }
 
   /**
@@ -1190,7 +1212,7 @@ public final class Ebean {
    */
   public static <T> Query<T> find(Class<T> beanType) {
 
-    return serverMgr.getPrimaryServer().find(beanType);
+    return serverMgr.getDefaultServer().find(beanType);
   }
 
   /**
@@ -1204,7 +1226,7 @@ public final class Ebean {
    * </p>
    */
   public static <T> Filter<T> filter(Class<T> beanType) {
-    return serverMgr.getPrimaryServer().filter(beanType);
+    return serverMgr.getDefaultServer().filter(beanType);
   }
 
   /**
@@ -1251,7 +1273,7 @@ public final class Ebean {
    * @see Ebean#execute(CallableSql)
    */
   public static int execute(SqlUpdate sqlUpdate) {
-    return serverMgr.getPrimaryServer().execute(sqlUpdate);
+    return serverMgr.getDefaultServer().execute(sqlUpdate);
   }
 
   /**
@@ -1280,7 +1302,7 @@ public final class Ebean {
    * @see Ebean#execute(SqlUpdate)
    */
   public static int execute(CallableSql callableSql) {
-    return serverMgr.getPrimaryServer().execute(callableSql);
+    return serverMgr.getDefaultServer().execute(callableSql);
   }
 
   /**
@@ -1305,7 +1327,7 @@ public final class Ebean {
    * }</pre>
    */
   public static void execute(TxScope scope, TxRunnable r) {
-    serverMgr.getPrimaryServer().execute(scope, r);
+    serverMgr.getDefaultServer().execute(scope, r);
   }
 
   /**
@@ -1333,7 +1355,7 @@ public final class Ebean {
    * }</pre>
    */
   public static void execute(TxRunnable r) {
-    serverMgr.getPrimaryServer().execute(r);
+    serverMgr.getDefaultServer().execute(r);
   }
 
   /**
@@ -1360,7 +1382,7 @@ public final class Ebean {
    * 
    */
   public static <T> T execute(TxScope scope, TxCallable<T> c) {
-    return serverMgr.getPrimaryServer().execute(scope, c);
+    return serverMgr.getDefaultServer().execute(scope, c);
   }
 
   /**
@@ -1394,7 +1416,7 @@ public final class Ebean {
    * }</pre>
    */
   public static <T> T execute(TxCallable<T> c) {
-    return serverMgr.getPrimaryServer().execute(c);
+    return serverMgr.getDefaultServer().execute(c);
   }
 
   /**
@@ -1431,10 +1453,9 @@ public final class Ebean {
    * @param deletes
    *          true if rows on the table where deleted
    */
-  public static void externalModification(String tableName, boolean inserts, boolean updates,
-      boolean deletes) {
+  public static void externalModification(String tableName, boolean inserts, boolean updates, boolean deletes) {
 
-    serverMgr.getPrimaryServer().externalModification(tableName, inserts, updates, deletes);
+    serverMgr.getDefaultServer().externalModification(tableName, inserts, updates, deletes);
   }
 
   /**
@@ -1444,7 +1465,7 @@ public final class Ebean {
    * </p>
    */
   public static BeanState getBeanState(Object bean) {
-    return serverMgr.getPrimaryServer().getBeanState(bean);
+    return serverMgr.getDefaultServer().getBeanState(bean);
   }
 
   /**
@@ -1452,7 +1473,7 @@ public final class Ebean {
    * 
    */
   public static ServerCacheManager getServerCacheManager() {
-    return serverMgr.getPrimaryServer().getServerCacheManager();
+    return serverMgr.getDefaultServer().getServerCacheManager();
   }
 
   /**
@@ -1460,7 +1481,7 @@ public final class Ebean {
    * queries.
    */
   public static BackgroundExecutor getBackgroundExecutor() {
-    return serverMgr.getPrimaryServer().getBackgroundExecutor();
+    return serverMgr.getDefaultServer().getBackgroundExecutor();
   }
 
   /**
@@ -1471,7 +1492,7 @@ public final class Ebean {
    * </p>
    */
   public static void runCacheWarming() {
-    serverMgr.getPrimaryServer().runCacheWarming();
+    serverMgr.getDefaultServer().runCacheWarming();
   }
 
   /**
@@ -1483,22 +1504,14 @@ public final class Ebean {
    */
   public static void runCacheWarming(Class<?> beanType) {
 
-    serverMgr.getPrimaryServer().runCacheWarming(beanType);
+    serverMgr.getDefaultServer().runCacheWarming(beanType);
   }
 
   /**
    * Return the JsonContext for reading/writing JSON.
    */
   public static JsonContext json() {
-    return serverMgr.getPrimaryServer().json();
-  }
-  
-  /**
-   * Return the JsonContext for reading/writing JSON.
-   * @deprecated Please use #json instead.
-   */
-  public static JsonContext createJsonContext() {
-    return json();
+    return serverMgr.getDefaultServer().json();
   }
 
 }

src/main/java/com/avaje/ebean/EbeanServer.java

@@ -1,20 +1,21 @@
 package com.avaje.ebean;
 
-import java.util.Collection;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-
-import javax.persistence.OptimisticLockException;
-import javax.persistence.PersistenceException;
-
 import com.avaje.ebean.annotation.CacheStrategy;
 import com.avaje.ebean.cache.ServerCacheManager;
 import com.avaje.ebean.config.ServerConfig;
 import com.avaje.ebean.meta.MetaInfoManager;
+import com.avaje.ebean.plugin.SpiServer;
 import com.avaje.ebean.text.csv.CsvReader;
 import com.avaje.ebean.text.json.JsonContext;
+import org.jetbrains.annotations.Nullable;
+
+import javax.persistence.NonUniqueResultException;
+import javax.persistence.OptimisticLockException;
+import javax.persistence.PersistenceException;
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 
 /**
  * Provides the API for fetching and saving beans to a particular DataSource.
@@ -106,10 +107,9 @@ public interface EbeanServer {
   void shutdown(boolean shutdownDataSource, boolean deregisterDriver);
   
   /**
-   * Return the AdminAutofetch which is used to control and configure the
-   * Autofetch service at runtime.
+   * Return AutoTune which is used to control the AutoTune service at runtime.
    */
-  AdminAutofetch getAdminAutofetch();
+  AutoTune getAutoTune();
 
   /**
    * Return the name. This is used with {@link Ebean#getServer(String)} to get a
@@ -128,6 +128,11 @@ public interface EbeanServer {
    */
   MetaInfoManager getMetaInfoManager();
 
+  /**
+   * Return the extended API intended for use by plugins.
+   */
+  SpiServer getPluginApi();
+
   /**
    * Return the BeanState for a given entity bean.
    * <p>
@@ -148,7 +153,7 @@ public interface EbeanServer {
    * difference comparison.
    * </p>
    */
-  Map<String, ValuePair> diff(Object a, Object b);
+  Map<String, ValuePair> diff(Object newBean, Object oldBean);
 
   /**
    * Create a new instance of T that is an EntityBean.
@@ -905,17 +910,13 @@ public interface EbeanServer {
   <T> void findEachWhile(Query<T> query, QueryEachWhileConsumer<T> consumer, Transaction transaction);
 
   /**
-   * Deprecated in favor of #findEachWhile which is functionally exactly the same
-   * but has a much better name.
+   * Return versions of a @History entity bean.
    * <p>
-   * Execute the query visiting the results. This is similar to findIterate in
-   * that not all the result beans need to be held in memory at the same time
-   * and as such is go for processing large queries.
+   *   Generally this query is expected to be a find by id or unique predicates query.
+   *   It will execute the query against the history returning the versions of the bean.
    * </p>
-   *
-   * @deprecated
    */
-  <T> void findVisit(Query<T> query, QueryResultVisitor<T> visitor, Transaction transaction);
+  <T> List<Version<T>> findVersions(Query<T> query, Transaction transaction);
 
   /**
    * Execute a query returning a list of beans.
@@ -1019,7 +1020,7 @@ public interface EbeanServer {
   SqlFutureList findFutureList(SqlQuery query, Transaction transaction);
 
   /**
-   * Return a PagedList for this query.
+   * Return a PagedList for this query using pageIndex and pageSize.
    * <p>
    * The benefit of using this over just using the normal {@link Query#setFirstRow(int)} and
    * {@link Query#setMaxRows(int)} is that it additionally wraps an optional call to
@@ -1041,6 +1042,38 @@ public interface EbeanServer {
    */
   <T> PagedList<T> findPagedList(Query<T> query, Transaction transaction, int pageIndex, int pageSize);
 
+  /**
+   * Return a PagedList for this query using firstRow and maxRows.
+   * <p>
+   * The benefit of using this over findList() is that it provides functionality to get the
+   * total row count etc.
+   * </p>
+   * <p>
+   * If maxRows is not set on the query prior to calling findPagedList() then a
+   * PersistenceException is thrown.
+   * </p>
+   *
+   * <pre>{@code
+   *
+   *  PagedList<Order> pagedList = Ebean.find(Order.class)
+   *       .setFirstRow(50)
+   *       .setMaxRows(20)
+   *       .findPagedList();
+   *
+   *       // fetch the total row count in the background
+   *       pagedList.loadRowCount();
+   *
+   *       List<Order> orders = pagedList.getList();
+   *       int totalRowCount = pagedList.getTotalRowCount();
+   *
+   * }</pre>
+   *
+   * @return The PagedList
+   *
+   * @see Query#findPagedList()
+   */
+  <T> PagedList<T> findPagedList(Query<T> query, Transaction transaction);
+
   /**
    * Execute the query returning a set of entity beans.
    * <p>
@@ -1091,14 +1124,17 @@ public interface EbeanServer {
   <T> Map<?, T> findMap(Query<T> query, Transaction transaction);
 
   /**
-   * Execute the query returning at most one entity bean. This will throw a
-   * PersistenceException if the query finds more than one result.
+   * Execute the query returning at most one entity bean or null (if no matching
+   * bean is found).
+   * <p>
+   * This will throw a NonUniqueResultException if the query finds more than one result.
+   * </p>
    * <p>
    * Generally you are able to use {@link Query#findUnique()} rather than
    * explicitly calling this method. You could use this method if you wish to
    * explicitly control the transaction used for the query.
    * </p>
-   * 
+   *
    * @param <T>
    *          the type of entity bean to fetch.
    * @param query
@@ -1106,11 +1142,28 @@ public interface EbeanServer {
    * @param transaction
    *          the transaction to use (can be null).
    * @return the list of fetched beans.
+   * @throws NonUniqueResultException if more than one result was found
    *
    * @see Query#findUnique()
    */
+  @Nullable
   <T> T findUnique(Query<T> query, Transaction transaction);
 
+  /**
+   * Execute as a delete query deleting the 'root level' beans that match the predicates
+   * in the query.
+   * <p>
+   * Note that if the query includes joins then the generated delete statement may not be
+   * optimal depending on the database platform.
+   * </p>
+   *
+   * @param query       the query used for the delete
+   * @param transaction the transaction to use (can be null)
+   * @param <T>         the type of entity bean to fetch.
+   * @return the number of beans/rows that were deleted
+   */
+  <T> int delete(Query<T> query, Transaction transaction);
+
   /**
    * Execute the sql query returning a list of MapBean.
    * <p>
@@ -1185,6 +1238,7 @@ public interface EbeanServer {
    *
    * @see SqlQuery#findUnique()
    */
+  @Nullable
   SqlRow findUnique(SqlQuery query, Transaction transaction);
 
   /**
@@ -1207,7 +1261,6 @@ public interface EbeanServer {
    *   public class Order { ...
    *
    * 	   @OneToMany(cascade=CascadeType.ALL, mappedBy="order")
-   * 	   @JoinColumn(name="order_id")
    * 	   List<OrderDetail> details;
    * 	   ...
    *   }
@@ -1222,34 +1275,60 @@ public interface EbeanServer {
    */
   void save(Object bean) throws OptimisticLockException;
 
-  /**
-   * Save all the beans in the iterator.
-   */
-  int save(Iterator<?> it) throws OptimisticLockException;
-
   /**
    * Save all the beans in the collection.
    */
-  int save(Collection<?> beans) throws OptimisticLockException;
+  int saveAll(Collection<?> beans) throws OptimisticLockException;
 
   /**
    * Delete the bean.
    * <p>
+   * This will return true if the bean was deleted successfully or JDBC batch is being used.
+   * </p>
+   * <p>
    * If there is no current transaction one will be created and committed for
    * you automatically.
    * </p>
+   * <p>
+   * If the Bean does not have a version property (or loaded version property) and
+   * the bean does not exist then this returns false indicating that nothing was
+   * deleted. Note that, if JDBC batch mode is used then this always returns true.
+   * </p>
    */
-  void delete(Object bean) throws OptimisticLockException;
+  boolean delete(Object bean) throws OptimisticLockException;
 
   /**
-   * Delete all the beans from an Iterator.
+   * Delete the bean with an explicit transaction.
+   * <p>
+   * This will return true if the bean was deleted successfully or JDBC batch is being used.
+   * </p>
+   * <p>
+   * If the Bean does not have a version property (or loaded version property) and
+   * the bean does not exist then this returns false indicating that nothing was
+   * deleted. However, if JDBC batch mode is used then this always returns true.
+   * </p>
    */
-  int delete(Iterator<?> it) throws OptimisticLockException;
+  boolean delete(Object bean, Transaction transaction) throws OptimisticLockException;
 
   /**
-   * Delete all the beans in the collection.
+   * Delete a bean permanently without soft delete.
    */
-  int delete(Collection<?> c) throws OptimisticLockException;
+  boolean deletePermanent(Object bean) throws OptimisticLockException;
+
+  /**
+   * Delete a bean permanently without soft delete using an explicit transaction.
+   */
+  boolean deletePermanent(Object bean, Transaction transaction) throws OptimisticLockException;
+
+  /**
+   * Delete all the beans in the collection permanently without soft delete.
+   */
+  int deleteAllPermanent(Collection<?> beans) throws OptimisticLockException;
+
+  /**
+   * Delete all the beans in the collection permanently without soft delete using an explicit transaction.
+   */
+  int deleteAllPermanent(Collection<?> beans, Transaction transaction) throws OptimisticLockException;
 
   /**
    * Delete the bean given its type and id.
@@ -1261,16 +1340,26 @@ public interface EbeanServer {
    */
   int delete(Class<?> beanType, Object id, Transaction transaction);
 
+  /**
+   * Delete all the beans in the collection.
+   */
+  int deleteAll(Collection<?> beans) throws OptimisticLockException;
+
+  /**
+   * Delete all the beans in the collection using an explicit transaction.
+   */
+  int deleteAll(Collection<?> beans, Transaction transaction) throws OptimisticLockException;
+
   /**
    * Delete several beans given their type and id values.
    */
-  void delete(Class<?> beanType, Collection<?> ids);
+  void deleteAll(Class<?> beanType, Collection<?> ids);
 
   /**
    * Delete several beans given their type and id values with an explicit
    * transaction.
    */
-  void delete(Class<?> beanType, Collection<?> ids, Transaction transaction);
+  void deleteAll(Class<?> beanType, Collection<?> ids, Transaction transaction);
 
   /**
    * Execute a Sql Update Delete or Insert statement. This returns the number of
@@ -1328,7 +1417,7 @@ public interface EbeanServer {
    * Execute a ORM insert update or delete statement with an explicit
    * transaction.
    */
-  int execute(Update<?> update, Transaction t);
+  int execute(Update<?> update, Transaction transaction);
 
   /**
    * For making calls to stored procedures.
@@ -1400,27 +1489,22 @@ public interface EbeanServer {
    *          the type of entity bean to find
    * @param beanType
    *          the type of entity bean to find
-   * @param uid
+   * @param id
    *          the bean id value
    * @param transaction
    *          the transaction to use (can be null)
    */
-  <T> T find(Class<T> beanType, Object uid, Transaction transaction);
+  <T> T find(Class<T> beanType, Object id, Transaction transaction);
 
   /**
    * Insert or update a bean with an explicit transaction.
    */
   void save(Object bean, Transaction transaction) throws OptimisticLockException;
 
-  /**
-   * Save all the beans in the iterator with an explicit transaction.
-   */
-  int save(Iterator<?> it, Transaction transaction) throws OptimisticLockException;
-
   /**
    * Save all the beans in the collection with an explicit transaction.
    */
-  int save(Collection<?> beans, Transaction transaction) throws OptimisticLockException;
+  int saveAll(Collection<?> beans, Transaction transaction) throws OptimisticLockException;
 
   /**
    * Marks the entity bean as dirty.
@@ -1445,7 +1529,7 @@ public interface EbeanServer {
   void markAsDirty(Object bean);
   
   /**
-   * Saves the bean using an update. If you know you are updating a bean then it is preferrable to
+   * Saves the bean using an update. If you know you are updating a bean then it is preferable to
    * use this update() method rather than save().
    * <p>
    * <b>Stateless updates:</b> Note that the bean does not have to be previously fetched to call
@@ -1485,7 +1569,7 @@ public interface EbeanServer {
   /**
    * Update a bean additionally specifying a transaction.
    */
-  void update(Object bean, Transaction t) throws OptimisticLockException;
+  void update(Object bean, Transaction transaction) throws OptimisticLockException;
 
   /**
    * Update a bean additionally specifying a transaction and the deleteMissingChildren setting.
@@ -1497,7 +1581,6 @@ public interface EbeanServer {
    * @param deleteMissingChildren
    *          specify false if you do not want 'missing children' of a OneToMany
    *          or ManyToMany to be automatically deleted.
-
    */
   void update(Object bean, Transaction transaction, boolean deleteMissingChildren) throws OptimisticLockException;
 
@@ -1505,13 +1588,13 @@ public interface EbeanServer {
    * Update a collection of beans. If there is no current transaction one is created and used to
    * update all the beans in the collection.
    */
-  void update(Collection<?> beans) throws OptimisticLockException;
+  void updateAll(Collection<?> beans) throws OptimisticLockException;
 
   /**
    * Update a collection of beans with an explicit transaction.
    */
-  void update(Collection<?> beans, Transaction transaction) throws OptimisticLockException;
-  
+  void updateAll(Collection<?> beans, Transaction transaction) throws OptimisticLockException;
+
   /**
    * Insert the bean.
    * <p>
@@ -1525,18 +1608,18 @@ public interface EbeanServer {
   /**
    * Insert the bean with a transaction.
    */
-  void insert(Object bean, Transaction t);
+  void insert(Object bean, Transaction transaction);
 
   /**
    * Insert a collection of beans. If there is no current transaction one is created and used to
    * insert all the beans in the collection.
    */
-  void insert(Collection<?> beans);
+  void insertAll(Collection<?> beans);
 
   /**
    * Insert a collection of beans with an explicit transaction.
    */
-  void insert(Collection<?> beans, Transaction t);
+  void insertAll(Collection<?> beans, Transaction transaction);
 
   /**
    * Delete the associations (from the intersection table) of a ManyToMany given
@@ -1545,7 +1628,7 @@ public interface EbeanServer {
    * Typically these deletions occur automatically when persisting a ManyToMany
    * collection and this provides a way to invoke those deletions directly.
    * </p>
-   * 
+   *
    * @return the number of associations deleted (from the intersection table).
    */
   int deleteManyToManyAssociations(Object ownerBean, String propertyName);
@@ -1560,10 +1643,10 @@ public interface EbeanServer {
    * Typically these deletions occur automatically when persisting a ManyToMany
    * collection and this provides a way to invoke those deletions directly.
    * </p>
-   * 
+   *
    * @return the number of associations deleted (from the intersection table).
    */
-  int deleteManyToManyAssociations(Object ownerBean, String propertyName, Transaction t);
+  int deleteManyToManyAssociations(Object ownerBean, String propertyName, Transaction transaction);
 
   /**
    * Save the associations of a ManyToMany given the owner bean and the
@@ -1585,7 +1668,7 @@ public interface EbeanServer {
    * way to invoke those insertions directly.
    * </p>
    */
-  void saveManyToManyAssociations(Object ownerBean, String propertyName, Transaction t);
+  void saveManyToManyAssociations(Object ownerBean, String propertyName, Transaction transaction);
 
   /**
    * Save the associated collection or bean given the property name.
@@ -1622,27 +1705,18 @@ public interface EbeanServer {
    * @param propertyName
    *          the property we want to save
    */
-  void saveAssociation(Object ownerBean, String propertyName, Transaction t);
+  void saveAssociation(Object ownerBean, String propertyName, Transaction transaction);
 
-  /**
-   * Delete the bean with an explicit transaction.
-   */
-  void delete(Object bean, Transaction t) throws OptimisticLockException;
-
-  /**
-   * Delete all the beans from an iterator.
-   */
-  int delete(Iterator<?> it, Transaction t) throws OptimisticLockException;
 
   /**
    * Execute explicitly passing a transaction.
    */
-  int execute(SqlUpdate updSql, Transaction t);
+  int execute(SqlUpdate updSql, Transaction transaction);
 
   /**
    * Execute explicitly passing a transaction.
    */
-  int execute(CallableSql callableSql, Transaction t);
+  int execute(CallableSql callableSql, Transaction transaction);
 
   /**
    * Execute a TxRunnable in a Transaction with an explicit scope.
@@ -1665,7 +1739,7 @@ public interface EbeanServer {
    *
    * }</pre>
    */
-  void execute(TxScope scope, TxRunnable r);
+  void execute(TxScope scope, TxRunnable runnable);
 
   /**
    * Execute a TxRunnable in a Transaction with the default scope.
@@ -1691,7 +1765,7 @@ public interface EbeanServer {
    *
    * }</pre>
    */
-  void execute(TxRunnable r);
+  void execute(TxRunnable runnable);
 
   /**
    * Execute a TxCallable in a Transaction with an explicit scope.
@@ -1715,7 +1789,7 @@ public interface EbeanServer {
    *
    * }</pre>
    */
-  <T> T execute(TxScope scope, TxCallable<T> c);
+  <T> T execute(TxScope scope, TxCallable<T> callable);
 
   /**
    * Execute a TxCallable in a Transaction with the default scope.
@@ -1747,7 +1821,7 @@ public interface EbeanServer {
    *
    * }</pre>
    */
-  <T> T execute(TxCallable<T> c);
+  <T> T execute(TxCallable<T> callable);
 
   /**
    * Return the manager of the server cache ("L2" cache).
@@ -1777,12 +1851,6 @@ public interface EbeanServer {
    */
   void runCacheWarming(Class<?> beanType);
 
-  /**
-   * Return the JsonContext for reading/writing JSON.
-   * @deprecated Please use #json instead.
-   */
-  JsonContext createJsonContext();
-
   /**
    * Return the JsonContext for reading/writing JSON.
    * <p>
@@ -1823,4 +1891,114 @@ public interface EbeanServer {
    */
   JsonContext json();
 
+  /**
+   * Publish a single bean given its type and id returning the resulting live bean.
+   * <p>
+   * The values are published from the draft to the live bean.
+   * </p>
+   *
+   * @param <T>         the type of the entity bean
+   * @param beanType    the type of the entity bean
+   * @param id          the id of the entity bean
+   * @param transaction the transaction the publish process should use (can be null)
+   */
+  <T> T publish(Class<T> beanType, Object id, Transaction transaction);
+
+  /**
+   * Publish a single bean given its type and id returning the resulting live bean.
+   * This will use the current transaction or create one if required.
+   * <p>
+   * The values are published from the draft to the live bean.
+   * </p>
+   *
+   * @param <T>         the type of the entity bean
+   * @param beanType    the type of the entity bean
+   * @param id          the id of the entity bean
+   */
+  <T> T publish(Class<T> beanType, Object id);
+
+  /**
+   * Publish the beans that match the query returning the resulting published beans.
+   * <p>
+   * The values are published from the draft beans to the live beans.
+   * </p>
+   *
+   * @param <T>         the type of the entity bean
+   * @param query       the query used to select the draft beans to publish
+   * @param transaction the transaction the publish process should use (can be null)
+   */
+  <T> List<T> publish(Query<T> query, Transaction transaction);
+
+  /**
+   * Publish the beans that match the query returning the resulting published beans.
+   * This will use the current transaction or create one if required.
+   * <p>
+   * The values are published from the draft beans to the live beans.
+   * </p>
+   *
+   * @param <T>         the type of the entity bean
+   * @param query       the query used to select the draft beans to publish
+   */
+  <T> List<T> publish(Query<T> query);
+
+  /**
+   * Restore the draft bean back to the live state.
+   * <p>
+   * The values from the live beans are set back to the draft bean and the
+   * <code>@DraftDirty</code> and <code>@DraftReset</code> properties are reset.
+   * </p>
+   *
+   * @param <T>         the type of the entity bean
+   * @param beanType    the type of the entity bean
+   * @param id          the id of the entity bean to restore
+   * @param transaction the transaction the restore process should use (can be null)
+   */
+  <T> T draftRestore(Class<T> beanType, Object id, Transaction transaction);
+
+  /**
+   * Restore the draft bean back to the live state.
+   * <p>
+   * The values from the live beans are set back to the draft bean and the
+   * <code>@DraftDirty</code> and <code>@DraftReset</code> properties are reset.
+   * </p>
+   *
+   * @param <T>         the type of the entity bean
+   * @param beanType    the type of the entity bean
+   * @param id          the id of the entity bean to restore
+   */
+  <T> T draftRestore(Class<T> beanType, Object id);
+
+  /**
+   * Restore the draft beans matching the query back to the live state.
+   * <p>
+   * The values from the live beans are set back to the draft bean and the
+   * <code>@DraftDirty</code> and <code>@DraftReset</code> properties are reset.
+   * </p>
+   *
+   * @param <T>         the type of the entity bean
+   * @param query       the query used to select the draft beans to restore
+   * @param transaction the transaction the restore process should use (can be null)
+   */
+  <T> List<T> draftRestore(Query<T> query, Transaction transaction);
+
+  /**
+   * Restore the draft beans matching the query back to the live state.
+   * <p>
+   * The values from the live beans are set back to the draft bean and the
+   * <code>@DraftDirty</code> and <code>@DraftReset</code> properties are reset.
+   * </p>
+   *
+   * @param <T>         the type of the entity bean
+   * @param query       the query used to select the draft beans to restore
+   */
+  <T> List<T> draftRestore(Query<T> query);
+
+  /**
+   * Returns the set of properties/paths that are unknown (do not map to known properties or paths).
+   * <p>
+   * Validate the query checking the where and orderBy expression paths to confirm if
+   * they represent valid properties/path for the given bean type.
+   * </p>
+   */
+  <T> Set<String> validateQuery(Query<T> query);
 }

src/main/java/com/avaje/ebean/ExpressionFactory.java

@@ -36,6 +36,51 @@ import java.util.Map;
  */
 public interface ExpressionFactory {
 
+  /**
+   * Path exists - for the given path in a JSON document.
+   */
+  Expression jsonExists(String propertyName, String path);
+
+  /**
+   * Path does not exist - for the given path in a JSON document.
+   */
+  Expression jsonNotExists(String propertyName, String path);
+
+  /**
+   * Equal to - for the given path in a JSON document.
+   */
+  Expression jsonEqualTo(String propertyName, String path, Object val);
+
+  /**
+   * Not Equal to - for the given path in a JSON document.
+   */
+  Expression jsonNotEqualTo(String propertyName, String path, Object val);
+
+  /**
+   * Greater than - for the given path in a JSON document.
+   */
+  Expression jsonGreaterThan(String propertyName, String path, Object val);
+
+  /**
+   * Greater than or equal to - for the given path in a JSON document.
+   */
+  Expression jsonGreaterOrEqual(String propertyName, String path, Object val);
+
+  /**
+   * Less than - for the given path in a JSON document.
+   */
+  Expression jsonLessThan(String propertyName, String path, Object val);
+
+  /**
+   * Less than or equal to - for the given path in a JSON document.
+   */
+  Expression jsonLessOrEqualTo(String propertyName, String path, Object val);
+
+  /**
+   * Between - for the given path in a JSON document.
+   */
+  Expression jsonBetween(String propertyName, String path, Object lowerValue, Object upperValue);
+
   /**
    * Equal To - property equal to the given value.
    */
@@ -169,7 +214,22 @@ public interface ExpressionFactory {
    * In - property has a value in the collection of values.
    */
   Expression in(String propertyName, Collection<?> values);
-  
+
+  /**
+   * Not In - property has a value in the array of values.
+   */
+  Expression notIn(String propertyName, Object[] values);
+
+  /**
+   * Not In - property has a value in the collection of values.
+   */
+  Expression notIn(String propertyName, Collection<?> values);
+
+  /**
+   * Not In - using a subQuery.
+   */
+  Expression notIn(String propertyName, Query<?> subQuery);
+
   /**
    * Exists expression
    */

src/main/java/com/avaje/ebean/ExpressionList.java

@@ -1,8 +1,11 @@
 package com.avaje.ebean;
 
 import com.avaje.ebean.text.PathProperties;
+import org.jetbrains.annotations.Nullable;
 
+import javax.persistence.NonUniqueResultException;
 import java.io.Serializable;
+import java.sql.Timestamp;
 import java.util.Collection;
 import java.util.List;
 import java.util.Map;
@@ -94,6 +97,39 @@ public interface ExpressionList<T> extends Serializable {
    */
   Query<T> apply(PathProperties pathProperties);
 
+  /**
+   * Perform an 'As of' query using history tables to return the object graph
+   * as of a time in the past.
+   * <p>
+   *   To perform this query the DB must have underlying history tables.
+   * </p>
+   *
+   * @param asOf the date time in the past at which you want to view the data
+   */
+  Query<T> asOf(Timestamp asOf);
+
+  /**
+   * Execute the query against the draft set of tables.
+   */
+  Query<T> asDraft();
+
+  /**
+   * Execute the query including soft deleted rows.
+   */
+  Query<T> includeSoftDeletes();
+
+  /**
+   * Execute as a delete query deleting the 'root level' beans that match the predicates
+   * in the query.
+   * <p>
+   * Note that if the query includes joins then the generated delete statement may not be
+   * optimal depending on the database platform.
+   * </p>
+   *
+   * @return the number of beans/rows that were deleted.
+   */
+  int delete();
+
   /**
    * Execute the query iterating over the results.
    * 
@@ -116,14 +152,6 @@ public interface ExpressionList<T> extends Serializable {
    */
   void findEachWhile(QueryEachWhileConsumer<T> consumer);
 
-  /**
-   * Deprecated in favor of #findEachWhile which is functionally exactly the same
-   * but has a much better name.
-   *
-   * @deprecated
-   */
-  void findVisit(QueryResultVisitor<T> visitor);
-
   /**
    * Execute the query returning a list.
    * 
@@ -166,10 +194,18 @@ public interface ExpressionList<T> extends Serializable {
   <K> Map<K, T> findMap(String keyProperty, Class<K> keyType);
 
   /**
-   * Execute the query returning a single bean.
-   * 
+   * Execute the query returning a single bean or null (if no matching
+   * bean is found).
+   * <p>
+   * If more than 1 row is found for this query then a NonUniqueResultException is
+   * thrown.
+   * </p>
+   *
+   * @throws NonUniqueResultException if more than one result was found
+   *
    * @see Query#findUnique()
    */
+  @Nullable
   T findUnique();
 
   /**
@@ -209,7 +245,7 @@ public interface ExpressionList<T> extends Serializable {
   FutureList<T> findFutureList();
 
   /**
-   * Return a PagedList for this query.
+   * Return a PagedList for this query using pageIndex and pageSize.
    * <p>
    * The benefit of using this over just using the normal {@link Query#setFirstRow(int)} and
    * {@link Query#setMaxRows(int)} is that it additionally wraps an optional call to
@@ -229,6 +265,56 @@ public interface ExpressionList<T> extends Serializable {
    */
   PagedList<T> findPagedList(int pageIndex, int pageSize);
 
+  /**
+   * Return a PagedList for this query using firstRow and maxRows.
+   * <p>
+   * The benefit of using this over findList() is that it provides functionality to get the
+   * total row count etc.
+   * </p>
+   * <p>
+   * If maxRows is not set on the query prior to calling findPagedList() then a
+   * PersistenceException is thrown.
+   * </p>
+   *
+   * <pre>{@code
+   *
+   *  PagedList<Order> pagedList = Ebean.find(Order.class)
+   *       .setFirstRow(50)
+   *       .setMaxRows(20)
+   *       .findPagedList();
+   *
+   *       // fetch the total row count in the background
+   *       pagedList.loadRowCount();
+   *
+   *       List<Order> orders = pagedList.getList();
+   *       int totalRowCount = pagedList.getTotalRowCount();
+   *
+   * }</pre>
+   *
+   * @return The PagedList
+   *
+   * @see Query#findPagedList()
+   */
+  PagedList<T> findPagedList();
+
+  /**
+   * Return versions of a @History entity bean.
+   * <p>
+   *   Generally this query is expected to be a find by id or unique predicates query.
+   *   It will execute the query against the history returning the versions of the bean.
+   * </p>
+   */
+  List<Version<T>> findVersions();
+
+  /**
+   * Return versions of a @History entity bean between the 2 timestamps.
+   * <p>
+   *   Generally this query is expected to be a find by id or unique predicates query.
+   *   It will execute the query against the history returning the versions of the bean.
+   * </p>
+   */
+  List<Version<T>> findVersionsBetween(Timestamp start, Timestamp end);
+
   /**
    * Add some filter predicate expressions to the many property.
    */
@@ -242,6 +328,24 @@ public interface ExpressionList<T> extends Serializable {
    */
   Query<T> select(String properties);
 
+  /**
+   * Set whether this query uses DISTINCT.
+   * <p>
+   * The select() clause MUST be specified when setDistinct(true) is set. The reason for this is that
+   * generally ORM queries include the "id" property and this doesn't make sense for distinct queries.
+   * </p>
+   * <pre>{@code
+   *
+   *   List<Customer> customers =
+   *       Ebean.find(Customer.class)
+   *          .setDistinct(true)
+   *          .select("name")     // only select the customer name
+   *          .findList();
+   *
+   * }</pre>
+   */
+  Query<T> setDistinct(boolean distinct);
+
   /**
    * Set the first row to fetch.
    * 
@@ -270,6 +374,13 @@ public interface ExpressionList<T> extends Serializable {
    */
   Query<T> setUseCache(boolean useCache);
 
+  /**
+   * Set to true to use the query for executing this query.
+   *
+   * @see Query#setUseQueryCache(boolean)
+   */
+  Query<T> setUseQueryCache(boolean useCache);
+
   /**
    * Add expressions to the having clause.
    * <p>
@@ -284,20 +395,136 @@ public interface ExpressionList<T> extends Serializable {
    */
   ExpressionList<T> where();
 
+  /**
+   * Path exists - for the given path in a JSON document.
+   *
+   * <pre>{@code
+   *
+   *   where().jsonExists("content", "path.other")
+   *
+   * }</pre>
+   *
+   * @param propertyName the property that holds a JSON document
+   * @param path the nested path in the JSON document in dot notation
+   */
+  ExpressionList<T> jsonExists(String propertyName, String path);
+
+  /**
+   * Path does not exist - for the given path in a JSON document.
+   *
+   * <pre>{@code
+   *
+   *   where().jsonNotExists("content", "path.other")
+   *
+   * }</pre>
+   *
+   * @param propertyName the property that holds a JSON document
+   * @param path the nested path in the JSON document in dot notation
+   */
+  ExpressionList<T> jsonNotExists(String propertyName, String path);
+
+  /**
+   * Equal to expression for the value at the given path in the JSON document.
+   *
+   * <pre>{@code
+   *
+   *   where().jsonEqualTo("content", "path.other", 34)
+   *
+   * }</pre>
+   *
+   * @param propertyName the property that holds a JSON document
+   * @param path the nested path in the JSON document in dot notation
+   * @param value the value used to test against the document path's value
+   */
+  ExpressionList<T> jsonEqualTo(String propertyName, String path, Object value);
+
+  /**
+   * Not Equal to - for the given path in a JSON document.
+   *
+   * <pre>{@code
+   *
+   *   where().jsonNotEqualTo("content", "path.other", 34)
+   *
+   * }</pre>
+   *
+   * @param propertyName the property that holds a JSON document
+   * @param path the nested path in the JSON document in dot notation
+   * @param value the value used to test against the document path's value
+   */
+  ExpressionList<T> jsonNotEqualTo(String propertyName, String path, Object value);
+
+  /**
+   * Greater than - for the given path in a JSON document.
+   *
+   * <pre>{@code
+   *
+   *   where().jsonGreaterThan("content", "path.other", 34)
+   *
+   * }</pre>
+   */
+  ExpressionList<T> jsonGreaterThan(String propertyName, String path, Object value);
+
+  /**
+   * Greater than or equal to - for the given path in a JSON document.
+   *
+   * <pre>{@code
+   *
+   *   where().jsonGreaterOrEqual("content", "path.other", 34)
+   *
+   * }</pre>
+   */
+  ExpressionList<T> jsonGreaterOrEqual(String propertyName, String path, Object value);
+
+  /**
+   * Less than - for the given path in a JSON document.
+   *
+   * <pre>{@code
+   *
+   *   where().jsonLessThan("content", "path.other", 34)
+   *
+   * }</pre>
+   */
+  ExpressionList<T> jsonLessThan(String propertyName, String path, Object value);
+
+  /**
+   * Less than or equal to - for the given path in a JSON document.
+   *
+   * <pre>{@code
+   *
+   *   where().jsonLessOrEqualTo("content", "path.other", 34)
+   *
+   * }</pre>
+   */
+  ExpressionList<T> jsonLessOrEqualTo(String propertyName, String path, Object value);
+
+  /**
+   * Between - for the given path in a JSON document.
+   *
+   * <pre>{@code
+   *
+   *   where().jsonBetween("content", "orderDate", lowerDateTime, upperDateTime)
+   *
+   * }</pre>
+   */
+  ExpressionList<T> jsonBetween(String propertyName, String path, Object lowerValue, Object upperValue);
+
   /**
    * Add an Expression to the list.
    * <p>
    * This returns the list so that add() can be chained.
    * </p>
-   * 
-   * <pre class="code">
-   * Query&lt;Customer&gt; query = Ebean.createQuery(Customer.class);
+   *
+   * <pre>{@code
+   *
+   * Query<Customer> query = Ebean.find(Customer.class);
    * query.where()
-   *     .like(&quot;name&quot;,&quot;Rob%&quot;)
-   *     .eq(&quot;status&quot;, Customer.ACTIVE);
-   * List&lt;Customer&gt; list = query.findList();
+   *     .like("name","Rob%")
+   *     .eq("status", Customer.ACTIVE);
+   *
+   * List<Customer> list = query.findList();
    * ...
-   * </pre>
+   *
+   * }</pre>
    */
   ExpressionList<T> add(Expression expr);
 
@@ -378,33 +605,36 @@ public interface ExpressionList<T> extends Serializable {
    * those options such as case insensitive etc.
    * </p>
    * 
-   * <pre class="code">
+   * <pre>{@code
+   *
    * // create an example bean and set the properties
    * // with the query parameters you want
    * Customer example = new Customer();
-   * example.setName(&quot;Rob%&quot;);
-   * example.setNotes(&quot;%something%&quot;);
+   * example.setName("Rob%");
+   * example.setNotes("%something%");
    * 
    * List&lt;Customer&gt; list = Ebean.find(Customer.class).where()
    *     // pass the bean into the where() clause
    *     .exampleLike(example)
    *     // you can add other expressions to the same query
-   *     .gt(&quot;id&quot;, 2).findList();
+   *     .gt("id", 2).findList();
    * 
-   * </pre>
+   * }</pre>
    * 
    * Similarly you can create an ExampleExpression
    * 
-   * <pre>
+   * <pre>{@code
+   *
    * Customer example = new Customer();
-   * example.setName(&quot;Rob%&quot;);
-   * example.setNotes(&quot;%something%&quot;);
+   * example.setName("Rob%");
+   * example.setNotes("%something%");
    * 
    * // create a ExampleExpression with more control
    * ExampleExpression qbe = new ExampleExpression(example, true, LikeType.EQUAL_TO).includeZeros();
    * 
-   * List&lt;Customer&gt; list = Ebean.find(Customer.class).where().add(qbe).findList();
-   * </pre>
+   * List<Customer> list = Ebean.find(Customer.class).where().add(qbe).findList();
+   *
+   * }</pre>
    */
   ExpressionList<T> exampleLike(Object example);
 
@@ -473,7 +703,22 @@ public interface ExpressionList<T> extends Serializable {
    * In - property has a value in the collection of values.
    */
   ExpressionList<T> in(String propertyName, Collection<?> values);
-  
+
+  /**
+   * Not In - property has a value in the array of values.
+   */
+  ExpressionList<T> notIn(String propertyName, Object... values);
+
+  /**
+   * Not In - property has a value in the collection of values.
+   */
+  ExpressionList<T> notIn(String propertyName, Collection<?> values);
+
+  /**
+   * Not In - using a subQuery.
+   */
+  ExpressionList<T> notIn(String propertyName, Query<?> subQuery);
+
   /**
    * Exists expression
    */
@@ -517,6 +762,14 @@ public interface ExpressionList<T> extends Serializable {
    * then they are not translated. logical property name names (not fully
    * qualified) will still be translated to their physical name.
    * </p>
+   *
+   * <h4>Example:</h4>
+   * <pre>{@code
+   *
+   *   // use a database function
+   *   raw("add_days(orderDate, 10) < ?", someDate)
+   *
+   * }</pre>
    */
   ExpressionList<T> raw(String raw, Object value);
 
@@ -532,7 +785,7 @@ public interface ExpressionList<T> extends Serializable {
    * qualified) will still be translated to their physical name.
    * </p>
    */
-  ExpressionList<T> raw(String raw, Object[] values);
+  ExpressionList<T> raw(String raw, Object... values);
 
   /**
    * Add raw expression with no parameters.
@@ -541,6 +794,12 @@ public interface ExpressionList<T> extends Serializable {
    * then they are not translated. logical property name names (not fully
    * qualified) will still be translated to their physical name.
    * </p>
+   *
+   * <pre>{@code
+   *
+   *   raw("orderQty < shipQty")
+   *
+   * }</pre>
    */
   ExpressionList<T> raw(String raw);
 

src/main/java/com/avaje/ebean/FetchConfig.java

@@ -22,57 +22,57 @@ import java.io.Serializable;
  * efficient loaded as 2 SQL queries.
  * </p>
  * 
- * <pre class="code">
+ * <pre>{@code
  * // Normal fetch join results in a single SQL query
- * List&lt;Order&gt; list = Ebean.find(Order.class).fetch(&quot;details&quot;).findList();
+ * List<Order> list = Ebean.find(Order.class).fetch("details").findList();
  * 
  * // Find Orders join details using a single SQL query
- * </pre>
+ * }</pre>
  * <p>
  * Example: Using a "query join" instead of a "fetch join" we instead use 2 SQL
  * queries
  * </p>
  * 
- * <pre class="code">
+ * <pre>{@code
  * // This will use 2 SQL queries to build this object graph
- * List&lt;Order&gt; list =
+ * List<Order> list =
  *     Ebean.find(Order.class)
- *         .fetch(&quot;details&quot;, new FetchConfig().query())
+ *         .fetch("details", new FetchConfig().query())
  *         .findList();
  * 
  * // query 1) find order
  * // query 2) find orderDetails where order.id in (?,?...) // first 100 order id's
- * </pre>
+ * }</pre>
  * <p>
  * Example: Using 2 "query joins"
  * </p>
  * 
- * <pre class="code">
+ * <pre>{@code
  * // This will use 3 SQL queries to build this object graph
- * List&lt;Order&gt; list =
+ * List<Order> list =
  *     Ebean.find(Order.class)
- *         .fetch(&quot;details&quot;, new FetchConfig().query())
- *         .fetch(&quot;customer&quot;, new FetchConfig().queryFirst(5))
+ *         .fetch("details", new FetchConfig().query())
+ *         .fetch("customer", new FetchConfig().queryFirst(5))
  *         .findList();
  * 
  * // query 1) find order
  * // query 2) find orderDetails where order.id in (?,?...) // first 100 order id's
  * // query 3) find customer where id in (?,?,?,?,?) // first 5 customers
- * </pre>
+ * }</pre>
  * <p>
  * Example: Using "query joins" and partial objects
  * </p>
  * 
- * <pre class="code">
+ * <pre>{@code
  * // This will use 3 SQL queries to build this object graph
- * List&lt;Order&gt; list =
+ * List<Order> list =
  *     Ebean.find(Order.class)
- *         .select(&quot;status, shipDate&quot;)
- *         .fetch(&quot;details&quot;, &quot;quantity, price&quot;, new FetchConfig().query())
- *         .fetch(&quot;details.product&quot;, &quot;sku, name&quot;)
- *         .fetch(&quot;customer&quot;, &quot;name&quot;, new FetchConfig().queryFirst(5))
- *         .fetch(&quot;customer.contacts&quot;)
- *         .fetch(&quot;customer.shippingAddress&quot;)
+ *         .select("status, shipDate")
+ *         .fetch("details", "quantity, price", new FetchConfig().query())
+ *         .fetch("details.product", "sku, name")
+ *         .fetch("customer", "name", new FetchConfig().queryFirst(5))
+ *         .fetch("customer.contacts")
+ *         .fetch("customer.shippingAddress")
  *         .findList();
  * 
  * // query 1) find order (status, shipDate)
@@ -81,22 +81,22 @@ import java.io.Serializable;
  * // query 3) find customer (name) fetch contacts (*) fetch shippingAddress (*)
  * // where id in (?,?,?,?,?)
  * 
- * // Note: the fetch of &quot;details.product&quot; is automatically included into the
- * // fetch of &quot;details&quot;
+ * // Note: the fetch of "details.product" is automatically included into the
+ * // fetch of "details"
  * //
- * // Note: the fetch of &quot;customer.contacts&quot; and &quot;customer.shippingAddress&quot;
- * // are automatically included in the fetch of &quot;customer&quot;
- * </pre>
+ * // Note: the fetch of "customer.contacts" and "customer.shippingAddress"
+ * // are automatically included in the fetch of "customer"
+ * }</pre>
  * <p>
  * You can use query() and lazy together on a single join. The query is executed
  * immediately and the lazy defines the batch size to use for further lazy
  * loading (if lazy loading is invoked).
  * </p>
  * 
- * <pre class="code">
- * List&lt;Order&gt; list =
+ * <pre>{@code
+ * List<Order> list =
  *     Ebean.find(Order.class)
- *         .fetch(&quot;customer&quot;, new FetchConfig().query(10).lazy(5))
+ *         .fetch("customer", new FetchConfig().query(10).lazy(5))
  *         .findList();
  * 
  * // query 1) find order
@@ -104,7 +104,7 @@ import java.io.Serializable;
  * // .. then if lazy loading of customers is invoked
  * // .. use a batch size of 5 to load the customers
  * 
- * </pre>
+ * }</pre>
  * 
  * <p>
  * Example of controlling the lazy loading query:
@@ -114,12 +114,12 @@ import java.io.Serializable;
  * case.
  * </p>
  * 
- * <pre class="code">
- * List&lt;Order&gt; list = Ebean.find(Order.class)
- *   .fetch(&quot;customer&quot;,&quot;name&quot;, new FetchConfig().lazy(5))
- *   .fetch(&quot;customer.contacts&quot;,&quotcontactName, phone, email&quot)
- *   .fetch(&quot;customer.shippingAddress&quot;)
- *   .where().eq(&quot;status&quot;,Order.Status.NEW)
+ * <pre>{@code
+ * List<Order> list = Ebean.find(Order.class)
+ *   .fetch("customer","name", new FetchConfig().lazy(5))
+ *   .fetch("customer.contacts",&quotcontactName, phone, email&quot)
+ *   .fetch("customer.shippingAddress")
+ *   .where().eq("status",Order.Status.NEW)
  *   .findList();
  * 
  * // query 1) find order where status = Order.Status.NEW
@@ -132,7 +132,7 @@ import java.io.Serializable;
  *       fetch customer.shippingAddress (*) 
  *       where id in (?,?,?,?,?)
  * 
- * </pre>
+ * }</pre>
  * 
  * @author mario
  * @author rbygrave

src/main/java/com/avaje/ebean/Filter.java

@@ -36,7 +36,7 @@ import java.util.Set;
  *         .sort("avgTimeMicros desc")
  *         .gt("executionCount", 0)
  *         .gt("lastQueryTime", nowMinus24Hrs)
- *         .eq("autofetchTuned", true)
+ *         .eq("autoTuned", true)
  *         .maxRows(10)
  *         .filter(list);
  * 

src/main/java/com/avaje/ebean/Finder.java

@@ -0,0 +1,167 @@
+package com.avaje.ebean;
+
+import org.jetbrains.annotations.Nullable;
+
+import java.util.List;
+
+/**
+ * Intended to be used as a base class for 'Finder' implementations that can then
+ * be injected or used as public static fields on the associated entity bean.
+ * <p>
+ * These 'finders' are a place to organise all the finder methods for that bean type
+ * and specific finder methods are expected to be added (find by unique properties etc).
+ * </p>
+ *
+ * <h3>Testing</h3>
+ * <p>
+ *   For testing the mocki-ebean project has the ability to replace the finder implementation
+ *
+ * </p>
+ * <pre>{@code
+ *
+ * public class CustomerFinder extends Finder<Customer> {
+ *
+ *   public CustomerFinder() {
+ *     super(Customer.class);
+ *   }
+ *
+ *   // Add your customer finder methods ...
+ *
+ *   public Customer byName(String name) {
+ *     return query().eq("name", name).findUnique();
+ *   }
+ *
+ *   public List<Customer> findNew() {
+ *     return query()
+ *       .eq("status", Customer.Status.NEW)
+ *       .orderBy("name")
+ *       .findList()
+ *   }
+ * }
+ *
+ * @Entity
+ * public class Customer extends BaseModel {
+ *
+ *   public static final CustomerFinder find = new CustomerFinder();
+ *   ...
+ *
+ * }</pre>
+ */
+public class Finder<I, T> {
+
+  /**
+   * The entity bean type.
+   */
+  private final Class<T> type;
+
+  /**
+   * The name of the EbeanServer, null for the default server.
+   */
+  private final String serverName;
+
+  /**
+   * Create with the type of the entity bean.
+   *
+   * <pre>{@code
+   *
+   * public class CustomerFinder extends Finder<Customer> {
+   *
+   *   public CustomerFinder() {
+   *     super(Customer.class);
+   *   }
+   *
+   *   // ... add extra customer specific finder methods
+   * }
+   *
+   * @Entity
+   * public class Customer extends BaseModel {
+   *
+   *   public static final CustomerFinder find = new CustomerFinder();
+   *   ...
+   *
+   * }</pre>
+   */
+  public Finder(Class<T> type) {
+    this.type = type;
+    this.serverName = null;
+  }
+
+  /**
+   * Create with the type of the entity bean and specific server name.
+   */
+  public Finder(Class<T> type, String serverName) {
+    this.type = type;
+    this.serverName = serverName;
+  }
+
+  /**
+   * Return the underlying 'default' EbeanServer.
+   *
+   * <p>
+   * This provides full access to the API such as explicit transaction demarcation etc.
+   *
+   */
+  public EbeanServer db() {
+    return Ebean.getServer(serverName);
+  }
+
+  /**
+   * Return typically a different EbeanServer to the default.
+   * <p>
+   * This is equivalent to {@link Ebean#getServer(String)}
+   *
+   * @param server
+   *          The name of the EbeanServer. If this is null then the default EbeanServer is
+   *          returned.
+   */
+  public EbeanServer db(String server) {
+    return Ebean.getServer(server);
+  }
+
+  /**
+   * Creates an entity reference for this ID.
+   *
+   * <p>
+   * Equivalent to {@link EbeanServer#getReference(Class, Object)}
+   */
+  public T ref(I id) {
+    return db().getReference(type, id);
+  }
+
+  /**
+   * Retrieves an entity by ID.
+   *
+   * <p>
+   * Equivalent to {@link EbeanServer#find(Class, Object)}
+   */
+  @Nullable
+  public T byId(I id) {
+    return db().find(type, id);
+  }
+
+  /**
+   * Delete a bean by Id.
+   * <p>
+   * Equivalent to {@link EbeanServer#delete(Class, Object)}
+   */
+  public void deleteById(I id) {
+    db().delete(type, id);
+  }
+
+  /**
+   * Retrieves all entities of the given type.
+   */
+  public List<T> all() {
+    return query().findList();
+  }
+
+  /**
+   * Creates a query.
+   * <p>
+   * Equivalent to {@link EbeanServer#find(Class)}
+   */
+  public Query<T> query() {
+    return db().find(type);
+  }
+
+}

src/main/java/com/avaje/ebean/FutureList.java

@@ -2,7 +2,6 @@ package com.avaje.ebean;
 
 import javax.persistence.PersistenceException;
 import java.util.List;
-import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;

src/main/java/com/avaje/ebean/Model.java

@@ -1,15 +1,15 @@
 package com.avaje.ebean;
 
+import com.avaje.ebean.bean.EntityBean;
 import com.avaje.ebean.text.PathProperties;
 import com.avaje.ebean.util.ClassUtil;
-
-import java.lang.reflect.Array;
-import java.lang.reflect.GenericArrayType;
-import java.lang.reflect.ParameterizedType;
-import java.lang.reflect.Type;
-import java.util.*;
+import org.jetbrains.annotations.Nullable;
 
 import javax.persistence.MappedSuperclass;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
 
 /**
  * A MappedSuperclass base class that provides convenience methods for inserting, updating and
@@ -152,7 +152,7 @@ public abstract class Model {
    * }</pre>
    */
   public static EbeanServer db() {
-    return Ebean.getServer(null);
+    return Ebean.getDefaultServer();
   }
 
   /**
@@ -194,7 +194,31 @@ public abstract class Model {
   public void markAsDirty() {
     db().markAsDirty(this);
   }
-  
+
+  /**
+   * Mark the property as unset or 'not loaded'.
+   * <p>
+   *   This would be used to specify a property that we did not wish to include in a stateless update.
+   * </p>
+   * <pre>{@code
+   *
+   *   // populate an entity bean from JSON or whatever
+   *   User user = ...;
+   *
+   *   // mark the email property as 'unset' so that it is not
+   *   // included in a 'stateless update'
+   *   user.markPropertyUnset("email");
+   *
+   *   user.update();
+   *
+   * }</pre>
+   *
+   * @param propertyName the name of the property on the bean to be marked as 'unset'
+   */
+  public void markPropertyUnset(String propertyName) {
+    ((EntityBean)this)._ebean_getIntercept().setPropertyLoaded(propertyName, false);
+  }
+
   /**
    * Insert or update this entity depending on its state.
    * 
@@ -227,12 +251,24 @@ public abstract class Model {
   }
 
   /**
-   * Delete this entity.
+   * Delete this bean.
+   * <p>
+   * This will return true if the bean was deleted successfully or JDBC batch is being used.
+   * </p>
+   * <p>
+   * If there is no current transaction one will be created and committed for
+   * you automatically.
+   * </p>
+   * <p>
+   * If the Bean does not have a version property (or loaded version property) and
+   * the bean does not exist then this returns false indicating that nothing was
+   * deleted. Note that, if JDBC batch mode is used then this always returns true.
+   * </p>
    *
    * @see EbeanServer#delete(Object)
    */
-  public void delete() {
-    db().delete(this);
+  public boolean delete() {
+    return db().delete(this);
   }
 
   /**
@@ -252,8 +288,8 @@ public abstract class Model {
   /**
    * Perform a delete using this entity against the specified server.
    */
-  public void delete(String server) {
-    db(server).delete(this);
+  public boolean delete(String server) {
+    return db(server).delete(this);
   }
 
   /**
@@ -442,6 +478,7 @@ public abstract class Model {
      *
      * }</pre>
      */
+    @SuppressWarnings("unchecked")
     public Find() {
       this.serverName = null;
       this.type = (Class<T>)ClassUtil.getSecondArgumentType(getClass());
@@ -451,8 +488,8 @@ public abstract class Model {
      * Construct passing the class literal type of the entity type.
      */
     protected Find(String serverName, Class<T> type) {
-      this.type = type;
       this.serverName = serverName;
+      this.type = type;
     }
 
     /**
@@ -514,6 +551,7 @@ public abstract class Model {
      * <p>
      * Equivalent to {@link EbeanServer#find(Class, Object)}
      */
+    @Nullable
     public T byId(I id) {
       return db().find(type, id);
     }
@@ -835,10 +873,10 @@ public abstract class Model {
     }
 
     /**
-     * Create a query with explicit 'Autofetch' use.
+     * Create a query with explicit 'AutoTune' use.
      */
-    public Query<T> setAutofetch(boolean autofetch) {
-      return query().setAutofetch(autofetch);
+    public Query<T> setAutoTune(boolean autoTune) {
+      return query().setAutoTune(autoTune);
     }
 
     /**

src/main/java/com/avaje/ebean/OrderBy.java

@@ -28,7 +28,7 @@ public final class OrderBy<T> implements Serializable {
    * Create an empty OrderBy with no associated query.
    */
   public OrderBy() {
-    this.list = new ArrayList<Property>(2);
+    this.list = new ArrayList<Property>(3);
   }
   
   private OrderBy(List<Property> list) {
@@ -52,7 +52,7 @@ public final class OrderBy<T> implements Serializable {
    */
   public OrderBy(Query<T> query, String orderByClause) {
     this.query = query;
-    this.list = new ArrayList<Property>(2);
+    this.list = new ArrayList<Property>(3);
     parse(orderByClause);
   }
 
@@ -83,6 +83,19 @@ public final class OrderBy<T> implements Serializable {
     return query;
   }
 
+  /**
+   * Return true if the property is known to be contained in the order by clause.
+   */
+  public boolean containsProperty(String propertyName) {
+
+    for (int i = 0; i < list.size(); i++) {
+      if (propertyName.equals(list.get(i).getProperty())) {
+        return true;
+      }
+    }
+    return false;
+  }
+
   /**
    * Return a copy of this OrderBy with the path trimmed.
    */
@@ -185,6 +198,18 @@ public final class OrderBy<T> implements Serializable {
     return list.hashCode();
   }
 
+  /**
+   * Clear the orderBy removing any current order by properties.
+   * <p>
+   * This is intended to be used when some code creates a query with a
+   * 'default' order by clause and some other code may clear the 'default'
+   * order by clause and replace.
+   * </p>
+   */
+  public void clear() {
+    list.clear();
+  }
+
   /**
    * A property and its ascending descending order.
    */

src/main/java/com/avaje/ebean/PagedList.java

@@ -17,6 +17,33 @@ import java.util.concurrent.Future;
  * limit the result set.
  * </p>
  *
+ *
+ * <h4>Example: typical use including total row count</h4>
+ * <pre>{@code
+ *
+ *     // We want to find the first 50 new orders
+ *     //  ... so we don't really need setFirstRow(0)
+ *
+ *     PagedList<Order> pagedList
+ *       = ebeanServer.find(Order.class)
+ *       .where().eq("status", Order.Status.NEW)
+ *       .order().asc("id")
+ *       .setFirstRow(0)
+ *       .setMaxRows(50)
+ *       .findPagedList();
+ *
+ *     // Optional: initiate the loading of the total
+ *     // row count in a background thread
+ *     pagedList.loadRowCount();
+ *
+ *     // fetch and return the list in the foreground thread
+ *     List<Order> orders = pagedList.getList();
+ *
+ *     // get the total row count (from the future)
+ *     int totalRowCount = pagedList.getTotalRowCount();
+ *
+ * }</pre>
+ *
  * <h4>Example: typical use including total row count</h4>
  * <pre>{@code
  *
@@ -156,9 +183,18 @@ public interface PagedList<T> {
 
   /**
    * Return the index position of this page. Zero based.
+   * <p>
+   * Note that if firstRows/maxRows is used rather than pageIndex/pageSize then
+   * this always returns 0.
+   * </p>
    */
   int getPageIndex();
 
+  /**
+   * Return the page size used for this query. This is the same value as maxRows used by the query.
+   */
+  int getPageSize();
+
   /**
    * Return true if there is a next page.
    * <p>

src/main/java/com/avaje/ebean/PrimaryServer.java

@@ -34,7 +34,7 @@ class PrimaryServer {
   /**
    * Return the default server name.
    */
-  static synchronized String getPrimaryServerName() {
+  static synchronized String getDefaultServerName() {
     getProperties();
     return defaultServerName;
   }

src/main/java/com/avaje/ebean/Query.java

@@ -1,8 +1,11 @@
 package com.avaje.ebean;
 
 import com.avaje.ebean.text.PathProperties;
+import org.jetbrains.annotations.Nullable;
 
+import javax.persistence.NonUniqueResultException;
 import java.io.Serializable;
+import java.sql.Timestamp;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -65,9 +68,9 @@ import java.util.Set;
  * ...
  * }</pre>
  * 
- * <h3>Autofetch</h3>
+ * <h3>AutoTune</h3>
  * <p>
- * Ebean has built in support for "Autofetch". This is a mechanism where a query
+ * Ebean has built in support for "AutoTune". This is a mechanism where a query
  * can be automatically tuned based on profiling information that is collected.
  * </p>
  * <p>
@@ -76,7 +79,7 @@ import java.util.Set;
  * more.
  * </p>
  * <p>
- * It is expected that Autofetch will be the default approach for many queries
+ * It is expected that AutoTune will be the default approach for many queries
  * in a system. It is possibly not as useful where the result of a query is sent
  * to a remote client or where there is some requirement for "Read Consistency"
  * guarantees.
@@ -284,6 +287,27 @@ public interface Query<T> extends Serializable {
    */
   Query<T> setRawSql(RawSql rawSql);
 
+  /**
+   * Perform an 'As of' query using history tables to return the object graph
+   * as of a time in the past.
+   * <p>
+   *   To perform this query the DB must have underlying history tables.
+   * </p>
+   *
+   * @param asOf the date time in the past at which you want to view the data
+   */
+  Query<T> asOf(Timestamp asOf);
+
+  /**
+   * Execute the query against the draft set of tables.
+   */
+  Query<T> asDraft();
+
+  /**
+   * Execute the query including soft deleted rows.
+   */
+  Query<T> includeSoftDeletes();
+
   /**
    * Cancel the query execution if supported by the underlying database and
    * driver.
@@ -325,23 +349,23 @@ public interface Query<T> extends Serializable {
   ExpressionFactory getExpressionFactory();
 
   /**
-   * Returns true if this query was tuned by autoFetch.
+   * Returns true if this query was tuned by autoTune.
    */
-  boolean isAutofetchTuned();
+  boolean isAutoTuned();
 
   /**
-   * Explicitly specify whether to use Autofetch for this query.
+   * Explicitly specify whether to use AutoTune for this query.
    * <p>
-   * If you do not call this method on a query the "Implicit Autofetch mode" is
-   * used to determine if Autofetch should be used for a given query.
+   * If you do not call this method on a query the "Implicit AutoTune mode" is
+   * used to determine if AutoTune should be used for a given query.
    * </p>
    * <p>
-   * Autofetch can add additional fetch paths to the query and specify which
+   * AutoTune can add additional fetch paths to the query and specify which
    * properties are included for each path. If you have explicitly defined some
-   * fetch paths Autofetch will not remove.
+   * fetch paths AutoTune will not remove them.
    * </p>
    */
-  Query<T> setAutofetch(boolean autofetch);
+  Query<T> setAutoTune(boolean autoTune);
 
   /**
    * Set the default lazy loading batch size to use.
@@ -353,6 +377,16 @@ public interface Query<T> extends Serializable {
    */
   Query<T> setLazyLoadBatchSize(int lazyLoadBatchSize);
 
+  /**
+   * Disable read auditing for this query.
+   * <p>
+   * This is intended to be used when the query is not a user initiated query and instead
+   * part of the internal processing in an application to load a cache or document store etc.
+   * In these cases we don't want the query to be part of read auditing.
+   * </p>
+   */
+  Query<T> setDisableReadAuditing();
+
   /**
    * Explicitly set a comma delimited list of the properties to fetch on the
    * 'main' root level entity bean (aka partial object). Note that '*' means all
@@ -483,7 +517,7 @@ public interface Query<T> extends Serializable {
    *
    * }</pre>
    */
-  Query<T> fetch(String path, FetchConfig joinConfig);
+  Query<T> fetch(String path, FetchConfig fetchConfig);
 
   /**
    * Apply the path properties replacing the select and fetch clauses.
@@ -520,19 +554,7 @@ public interface Query<T> extends Serializable {
    */
   QueryIterator<T> findIterate();
 
-  /**
-   * This is deprecated in favor of #findEachWhile.
-   * <p>
-   * This is functionally exactly the same as #findEachWhile.  It is
-   * replaced by findEachWhile because the method name is much better.
-   * </p>
-   *
-   * @param visitor
-   *          the visitor used to process the queried beans.
-   *
-   * @deprecated
-   */
-  void findVisit(QueryResultVisitor<T> visitor);
+
 
   /**
    * Execute the query processing the beans one at a time.
@@ -679,7 +701,7 @@ public interface Query<T> extends Serializable {
    * Execute the query returning either a single bean or null (if no matching
    * bean is found).
    * <p>
-   * If more than 1 row is found for this query then a PersistenceException is
+   * If more than 1 row is found for this query then a NonUniqueResultException is
    * thrown.
    * </p>
    * <p>
@@ -715,9 +737,47 @@ public interface Query<T> extends Serializable {
    * List<OrderDetail> details = order.getDetails();
    * ...
    * }</pre>
+   *
+   * @throws NonUniqueResultException if more than one result was found
    */
+  @Nullable
   T findUnique();
 
+  /**
+   * Return versions of a @History entity bean.
+   * <p>
+   *   Note that this query will work against view based history implementations
+   *   but not sql2011 standards based implementations that require a start and
+   *   end timestamp to be specified.
+   * </p>
+   * <p>
+   *   Generally this query is expected to be a find by id or unique predicates query.
+   *   It will execute the query against the history returning the versions of the bean.
+   * </p>
+   */
+  List<Version<T>> findVersions();
+
+  /**
+   * Return versions of a @History entity bean between the 2 timestamps.
+   * <p>
+   *   Generally this query is expected to be a find by id or unique predicates query.
+   *   It will execute the query against the history returning the versions of the bean.
+   * </p>
+   */
+  List<Version<T>> findVersionsBetween(Timestamp start, Timestamp end);
+
+  /**
+   * Execute as a delete query deleting the 'root level' beans that match the predicates
+   * in the query.
+   * <p>
+   * Note that if the query includes joins then the generated delete statement may not be
+   * optimal depending on the database platform.
+   * </p>
+   *
+   * @return the number of beans/rows that were deleted.
+   */
+  int delete();
+
   /**
    * Return the count of entities this query should return.
    * <p>
@@ -762,7 +822,7 @@ public interface Query<T> extends Serializable {
   FutureList<T> findFutureList();
 
   /**
-   * Return a PagedList for this query.
+   * Return a PagedList for this query using pageIndex and pageSize.
    * <p>
    * The benefit of using this over just using the normal {@link Query#setFirstRow(int)} and
    * {@link Query#setMaxRows(int)} is that it additionally wraps an optional call to
@@ -807,6 +867,36 @@ public interface Query<T> extends Serializable {
    */
   PagedList<T> findPagedList(int pageIndex, int pageSize);
 
+  /**
+   * Return a PagedList for this query using firstRow and maxRows.
+   * <p>
+   * The benefit of using this over findList() is that it provides functionality to get the
+   * total row count etc.
+   * </p>
+   * <p>
+   * If maxRows is not set on the query prior to calling findPagedList() then a
+   * PersistenceException is thrown.
+   * </p>
+   *
+   * <pre>{@code
+   *
+   *  PagedList<Order> pagedList = Ebean.find(Order.class)
+   *       .setFirstRow(50)
+   *       .setMaxRows(20)
+   *       .findPagedList();
+   *
+   *       // fetch the total row count in the background
+   *       pagedList.loadRowCount();
+   *
+   *       List<Order> orders = pagedList.getList();
+   *       int totalRowCount = pagedList.getTotalRowCount();
+   *
+   * }</pre>
+   *
+   * @return The PagedList
+   */
+  PagedList<T> findPagedList();
+
   /**
    * Set a named bind parameter. Named parameters have a colon to prefix the name.
    * 
@@ -878,6 +968,11 @@ public interface Query<T> extends Serializable {
    */
   Query<T> setId(Object id);
 
+  /**
+   * Return the Id value.
+   */
+  Object getId();
+
   /**
    * Add additional clause(s) to the where clause.
    * <p>
@@ -1113,6 +1208,19 @@ public interface Query<T> extends Serializable {
 
   /**
    * Set whether this query uses DISTINCT.
+   * <p>
+   * The select() clause MUST be specified when setDistinct(true) is set. The reason for this is that
+   * generally ORM queries include the "id" property and this doesn't make sense for distinct queries.
+   * </p>
+   * <pre>{@code
+   *
+   *   List<Customer> customers =
+   *       Ebean.find(Customer.class)
+   *          .setDistinct(true)
+   *          .select("name")
+   *          .findList();
+   *
+   * }</pre>
    */
   Query<T> setDistinct(boolean isDistinct);
 
@@ -1123,8 +1231,8 @@ public interface Query<T> extends Serializable {
 
   /**
    * Set the first row to return for this query.
-   * 
-   * @param firstRow
+   *
+   * @param firstRow the first row to include in the query result.
    */
   Query<T> setFirstRow(int firstRow);
 
@@ -1235,4 +1343,26 @@ public interface Query<T> extends Serializable {
    * Set root table alias.
    */
   Query<T> alias(String alias);
+
+  /**
+   * Return the type of beans being queried.
+   */
+  Class<T> getBeanType();
+
+  /**
+   * Set true if you want to disable lazy loading.
+   * <p>
+   *   That is, once the object graph is returned further lazy loading is disabled.
+   * </p>
+   */
+  Query<T> setDisableLazyLoading(boolean disableLazyLoading);
+
+  /**
+   * Returns the set of properties or paths that are unknown (do not map to known properties or paths).
+   * <p>
+   * Validate the query checking the where and orderBy expression paths to confirm if
+   * they represent valid properties or paths for the given bean type.
+   * </p>
+   */
+  Set<String> validate();
 }

src/main/java/com/avaje/ebean/QueryResultVisitor.java

@@ -1,49 +0,0 @@
-package com.avaje.ebean;
-
-/**
- * Used to process a query result one bean at a time via a callback to this
- * visitor.
- * <p>
- * If you wish to stop further processing return false from the accept method.
- * </p>
- * <p>
- * Unlike findList() and findSet() using a QueryResultVisitor does not require
- * all the beans in the query result to be held in memory at once. This makes
- * QueryResultVisitor useful for processing large queries.
- * </p>
- * 
- * <pre class="code">
- * 
- * Query&lt;Customer&gt; query = server.find(Customer.class)
- *     .fetch(&quot;contacts&quot;, new FetchConfig().query(2))
- *     .where().gt(&quot;id&quot;, 0)
- *     .orderBy(&quot;id&quot;)
- *     .setMaxRows(2);
- * 
- * query.findVisit(new QueryResultVisitor&lt;Customer&gt;() {
- * 
- *   public boolean accept(Customer customer) {
- *     // do something with customer
- *     System.out.println(&quot;-- visit &quot; + customer);
- *     return true;
- *   }
- * });
- * </pre>
- * 
- * @author rbygrave
- * 
- * @param <T>
- *          the type of entity bean being queried.
- */
-public interface QueryResultVisitor<T> {
-
-  /**
-   * Process the bean and return true if you want to continue processing more
-   * beans. Return false if you want to stop processing further.
-   * 
-   * @param bean
-   *          the entity bean to process
-   * @return true to continue processing or false to stop.
-   */
-  boolean accept(T bean);
-}

src/main/java/com/avaje/ebean/SqlRow.java

@@ -153,7 +153,7 @@ public interface SqlRow extends Serializable, Map<String, Object> {
   /**
    * Put all the values from t into this map.
    */
-  void putAll(Map<? extends String, ? extends Object> t);
+  void putAll(Map<? extends String, ?> t);
 
   /**
    * Return the size of the map.

src/main/java/com/avaje/ebean/Transaction.java

@@ -2,7 +2,6 @@ package com.avaje.ebean;
 
 import com.avaje.ebean.config.PersistBatch;
 
-import javax.persistence.OptimisticLockException;
 import javax.persistence.PersistenceException;
 import javax.persistence.RollbackException;
 import java.io.Closeable;
@@ -97,6 +96,17 @@ public interface Transaction extends Closeable {
    */
   void setPersistCascade(boolean persistCascade);
 
+  /**
+   * Set to true when you want all loaded properties to be included in the update
+   * (rather than just the changed properties).
+   * <p>
+   *   You might set this when using JDBC batch in order to get multiple updates
+   *   with slightly different sets of changed properties into the same statement
+   *   and hence better JDBC batch performance.
+   * </p>
+   */
+  void setUpdateAllLoadedProperties(boolean updateAllLoadedProperties);
+
   /**
    * Turn on or off statement batching. Statement batching can be transparent
    * for drivers and databases that support getGeneratedKeys. Otherwise you may
@@ -279,7 +289,7 @@ public interface Transaction extends Closeable {
    * <li>Transaction commit occurs</li>
    * </ul>
    */
-  void flushBatch() throws PersistenceException, OptimisticLockException;
+  void flushBatch() throws PersistenceException;
 
   /**
    * Return the underlying Connection object.

src/main/java/com/avaje/ebean/TxType.java

@@ -46,5 +46,5 @@ public enum TxType {
    * If there is an existing transaction throws an Exception. Method runs
    * without a transaction.
    */
-  NEVER;
+  NEVER
 }

src/main/java/com/avaje/ebean/ValuePair.java

@@ -5,10 +5,19 @@ package com.avaje.ebean;
  */
 public class ValuePair {
 
-  private final Object newValue;
+  protected Object newValue;
 
-  private final Object oldValue;
+  protected Object oldValue;
 
+  /**
+   * Default constructor for JSON tools.
+   */
+  public ValuePair() {
+  }
+
+  /**
+   * Construct with the pair of new and old values.
+   */
   public ValuePair(Object newValue, Object oldValue) {
     this.newValue = newValue;
     this.oldValue = oldValue;
@@ -27,21 +36,19 @@ public class ValuePair {
   public Object getOldValue() {
     return oldValue;
   }
-  
+
   /**
-   * Return the new value.
+   * Set the new value.
    */
-  @Deprecated
-  public Object getValue1() {
-    return newValue;
+  public void setNewValue(Object newValue) {
+    this.newValue = newValue;
   }
 
   /**
-   * Return the old value.
+   * Set the old value.
    */
-  @Deprecated
-  public Object getValue2() {
-    return oldValue;
+  public void setOldValue(Object oldValue) {
+    this.oldValue = oldValue;
   }
 
   public String toString() {

src/main/java/com/avaje/ebean/Version.java

@@ -0,0 +1,101 @@
+package com.avaje.ebean;
+
+import java.sql.Timestamp;
+import java.util.Map;
+
+/**
+ * Wraps a version of a @History bean.
+ */
+public class Version<T> {
+
+  /**
+   * The version of the bean.
+   */
+  protected T bean;
+
+  /**
+   * The effective start date time of this version.
+   */
+  protected Timestamp start;
+
+  /**
+   * The effective end date time of this version.
+   */
+  protected Timestamp end;
+
+  /**
+   * The map of changed properties.
+   */
+  protected Map<String, ValuePair> diff;
+
+  /**
+   * Construct with bean and an effective date time range.
+   */
+  public Version(T bean, Timestamp start, Timestamp end) {
+    this.bean = bean;
+    this.start = start;
+    this.end = end;
+  }
+
+  /**
+   * Default constructor - useful for JSON tools such as Jackson.
+   */
+  public Version() {
+  }
+
+  /**
+   * Return the bean instance for this version.
+   */
+  public T getBean() {
+    return bean;
+  }
+
+  /**
+   * Set the bean instance for this version.
+   */
+  public void setBean(T bean) {
+    this.bean = bean;
+  }
+
+  /**
+   * Return the effective start date time of this version.
+   */
+  public Timestamp getStart() {
+    return start;
+  }
+
+  /**
+   * Set the effective start date time of this version.
+   */
+  public void setStart(Timestamp start) {
+    this.start = start;
+  }
+
+  /**
+   * Return the effective end date time of this version.
+   */
+  public Timestamp getEnd() {
+    return end;
+  }
+
+  /**
+   * Set the effective end date time of this version.
+   */
+  public void setEnd(Timestamp end) {
+    this.end = end;
+  }
+
+  /**
+   * Set the map of differences from this bean to the prior version.
+   */
+  public void setDiff(Map<String, ValuePair> diff) {
+    this.diff = diff;
+  }
+
+  /**
+   * Return the map of differences from this bean to the prior version.
+   */
+  public Map<String, ValuePair> getDiff() {
+    return diff;
+  }
+}

src/main/java/com/avaje/ebean/annotation/ChangeLog.java

@@ -0,0 +1,34 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Marks an entity bean as being included in the change logging.
+ */
+@Target({ElementType.TYPE})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ChangeLog {
+
+  /**
+   * Specify if inserts should be explicitly Included or Excluded.
+   * <p>
+   * If not defined explicitly then the server default behaviour defined
+   * on ServerConfig is used.
+   * </p>
+   */
+  ChangeLogInsertMode inserts() default ChangeLogInsertMode.DEFAULT;
+
+  /**
+   * When specified only include update requests that have at least one
+   * of the given properties as a dirty property.
+   * <p>
+   * This provides a way to filter requests to include in the change log such that
+   * only updates that include at least one of the given properties is included
+   * in the change log.
+   * </p>
+   */
+  String[] updatesThatInclude() default {};
+}

src/main/java/com/avaje/ebean/annotation/ChangeLogInsertMode.java

@@ -0,0 +1,22 @@
+package com.avaje.ebean.annotation;
+
+/**
+ * The mode used to determine if inserts should be included or not for a given bean type.
+ */
+public enum ChangeLogInsertMode {
+
+  /**
+   * Use the default behaviour as defined on ServerConfig.
+   */
+  DEFAULT,
+
+  /**
+   * Include inserts in the change log.
+   */
+  INCLUDE,
+
+  /**
+   * Exclude inserts in the change log.
+   */
+  EXCLUDE
+}

src/main/java/com/avaje/ebean/annotation/CreatedTimestamp.java

@@ -9,6 +9,10 @@ import java.lang.annotation.Target;
  * For a timestamp property that is set to the datetime when the entity is
  * created/inserted.
  * <p>
+ * This is effectively an alias for @WhenCreated which was added as it hints
+ * towards a better naming convention (WhenCreated, WhenModified).
+ * </p>
+ * <p>
  * An alternative to using this annotation would be to use insertable=false,
  * updateable=false with @Column and have the DB insert the current time
  * (default value on the DB column is SYSTIME etc).

src/main/java/com/avaje/ebean/annotation/DbComment.java

@@ -0,0 +1,19 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * A database table or column comment.
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD, ElementType.METHOD, ElementType.TYPE})
+public @interface DbComment {
+
+  /**
+   * The database table or column comment.
+   */
+  String value();
+}

src/main/java/com/avaje/ebean/annotation/DbEnumType.java

@@ -0,0 +1,17 @@
+package com.avaje.ebean.annotation;
+
+/**
+ * Specify the DB storage type used to with <code>@DbEnumValue</code>.
+ */
+public enum DbEnumType {
+
+  /**
+   * Store values as database INTEGER.
+   */
+  INTEGER,
+
+  /**
+   * Store values as database VARCHAR.
+   */
+  VARCHAR
+}

src/main/java/com/avaje/ebean/annotation/DbEnumValue.java

@@ -0,0 +1,44 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Specify a method on an Enum that returns the value that should be stored in the DB.
+ * <p>
+ * This is the preferred option for mapping Enum's to DB values (preferred over the JPA
+ * standard @Enumerated and Ebean's @EnumValue annotations).
+ * </p>
+ * <h3>Example:</h3>
+ * <pre>{@code
+ *
+ *   public enum Status {
+ *     NEW("N"),
+ *     ACTIVE("A"),
+ *     INACTIVE("I");
+ *
+ *     String dbValue;
+ *     Status(String dbValue) {
+ *       this.dbValue = dbValue;
+ *     }
+ *
+ *     @DbEnumValue
+ *     public String getValue() {
+ *       return dbValue;
+ *     }
+ *   }
+ *
+ * }</pre>
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.METHOD)
+public @interface DbEnumValue {
+
+  /**
+   * Specify the database type used to store the values (VARCHAR or INTEGER).
+   */
+  DbEnumType storage() default DbEnumType.VARCHAR;
+
+}

src/main/java/com/avaje/ebean/annotation/Draft.java

@@ -0,0 +1,19 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Marks a boolean property on a @Draftable bean that indicates if the bean instance is a 'draft' or 'live' bean.
+ * The property is transient and has no underlying DB column.
+ * <p>
+ * For beans returned from an <code>asDraft()</code> query this property will be set to true.
+ * </p>
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface Draft {
+
+}

src/main/java/com/avaje/ebean/annotation/DraftDirty.java

@@ -0,0 +1,20 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Marks a boolean property on a @Draftable bean that only exists on the 'draft' table
+ * and is used to detect when a draft has unpublished changes.
+ * <p>
+ * This property will automatically have it's value set to true when a draft is saved and
+ * automatically have it's value set to false when the bean is published.
+ * </p>
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface DraftDirty {
+
+}

src/main/java/com/avaje/ebean/annotation/DraftOnly.java

@@ -0,0 +1,19 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Marks a property on a @Draftable bean that only exists on the 'draft' and not the 'live' table.
+ * <p>
+ * Typically this would be used on a property that is used as part of application 'workflow' such as
+ * a publish workflow status or when publish timestamp.
+ * </p>
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface DraftOnly {
+
+}

src/main/java/com/avaje/ebean/annotation/DraftReset.java

@@ -0,0 +1,19 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Marks a property on a @Draftable bean that is set to null on the 'draft bean' on publish.
+ * <p>
+ * This is expected to be put on properties that get 'reset' or 'cleared' after a publish.
+ * These properties might represent a publish comment or publish timestamp.
+ * </p>
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface DraftReset {
+
+}

src/main/java/com/avaje/ebean/annotation/Draftable.java

@@ -0,0 +1,29 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Used to indicate an entity bean that has 'draftable' support.
+ * <p>
+ * This means that a second set of tables is created to hold draft versions of
+ * the rows and that these can then be published which effectively copies/transfers
+ * the values from the 'draft' table to the 'live' table.
+ * </p>
+ * <p>
+ * Ebean Query supports 'find as draft' which builds the resulting object graph using
+ * the draft tables. This object graph is typically edited, approved in some application
+ * specific manor and then published.
+ * </p>
+ * <p>
+ * EbeanServer has a publish method which transfers/copies the draft object graph to
+ * the 'live' tables.
+ * </p>
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.TYPE)
+public @interface Draftable {
+
+}

src/main/java/com/avaje/ebean/annotation/DraftableElement.java

@@ -0,0 +1,20 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Used to indicate an entity bean that has 'draftable' support but it not a 'top level'
+ * (or root level) bean but instead child related to another @Draftable entity bean.
+ * <p>
+ * Relationships to @DraftableElements (@OneToMany, @ManyToMany etc) are automatically
+ * deemed to have Cascade.ALL for save and delete (as well as orphan removal mode).
+ * </p>
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.TYPE)
+public @interface DraftableElement {
+
+}

src/main/java/com/avaje/ebean/annotation/EnumValue.java

@@ -25,7 +25,7 @@ import java.lang.annotation.Target;
  * }</pre>
  * <p>
  * This is an alternative to using the JPA standard approach or Ebean's
- * {@link EnumMapping} annotation.
+ * {@link DbEnumValue} annotation.
  * </p>
  * <p>
  * Note that if all the EnumValue values are parsable as Integers then Ebean

src/main/java/com/avaje/ebean/annotation/History.java

@@ -0,0 +1,19 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Marks an entity bean as having history support.
+ * <p>
+ * In Postgres for example this means there is an associated history table which is
+ * typically automatically populated via database triggers.
+ * </p>
+ */
+@Target({ ElementType.TYPE })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface History {
+
+}

src/main/java/com/avaje/ebean/annotation/HistoryExclude.java

@@ -0,0 +1,25 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Marks a property as being excluded from history.
+ * <p>
+ * This means the property values are not maintained in the history table. Typically this
+ * would be placed on relatively large properties (Clobs, Blobs, large varchar columns etc)
+ * that are considered not interesting enough to maintain history on excluding them reduces
+ * underlying database costs.
+ * </p>
+ * <p>
+ * When placed on a ManyToMany this means that the intersection table does not have history
+ * support.
+ * </p>
+ */
+@Target({ ElementType.FIELD })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface HistoryExclude {
+
+}

src/main/java/com/avaje/ebean/annotation/Index.java

@@ -10,15 +10,24 @@ import java.lang.annotation.Target;
  *
  * @author rvbiljouw
  */
-@Target({ElementType.FIELD})
+@Target({ElementType.TYPE, ElementType.FIELD})
 @Retention(RetentionPolicy.RUNTIME)
 public @interface Index {
 
   /**
-   * Name of the index
-   *
-   * @return index name
+   * Name of the index. If left blank a name is derived using the built in naming convention.
    */
-  String value() default "";
+  String name() default "";
+
+  /**
+   * If set true indicates this is a unique index.
+   */
+  boolean unique() default false;
+
+  /**
+   * When placed on the class (rather than field) you can specify the columns
+   * to include in the index in order.
+   */
+  String[] columnNames() default {};
 
 }

src/main/java/com/avaje/ebean/annotation/JsonIgnore.java

@@ -0,0 +1,32 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Similar to Jackson JsonIgnore but provides the option to just ignore serialize or deserialize.
+ * <p>
+ *   This provides the same features as Expose but from the opposite perspective which is probably
+ *   more common and more familiar to Jackson users.
+ * </p>
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface JsonIgnore {
+
+  /**
+   * If {@code true}, the field marked with this annotation is written out in the JSON while
+   * serializing. If {@code false}, the field marked with this annotation is skipped from the
+   * serialized output. Defaults to {@code false}.
+   */
+  boolean serialize() default false;
+
+  /**
+   * If {@code true}, the field marked with this annotation is deserialized from the JSON.
+   * If {@code false}, the field marked with this annotation is skipped during deserialization.
+   * Defaults to {@code false}.
+   */
+  boolean deserialize() default false;
+}

src/main/java/com/avaje/ebean/annotation/ReadAudit.java

@@ -6,12 +6,10 @@ import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 /**
- * Deprecated - please use @DbHstore instead.
- * @see DbHstore
+ * Marks an entity bean as being included in read auditing.
  */
-@Deprecated
+@Target({ElementType.TYPE})
 @Retention(RetentionPolicy.RUNTIME)
-@Target(ElementType.FIELD)
-public @interface ColumnHstore {
+public @interface ReadAudit {
 
-}
+}

src/main/java/com/avaje/ebean/annotation/SoftDelete.java

@@ -0,0 +1,25 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Used to indicate a property on an entity bean used to control 'soft delete'
+ * (also known as 'logical delete').
+ * <p>
+ * The property should be of type boolean.
+ * </p>
+ * <pre>{@code
+ *
+ * @SoftDelete
+ * boolean deleted;
+ *
+ * }</pre>
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+public @interface SoftDelete {
+
+}

src/main/java/com/avaje/ebean/annotation/UpdatedTimestamp.java

@@ -8,6 +8,10 @@ import java.lang.annotation.Target;
 /**
  * For a timestamp property that is set to the datetime when the entity was last
  * updated.
+ * <p>
+ * This is effectively an alias for @WhenModified which was added as it hints
+ * towards a better naming convention (WhenCreated, WhenModified).
+ * </p>
  */
 @Target({ ElementType.FIELD, ElementType.METHOD })
 @Retention(RetentionPolicy.RUNTIME)

src/main/java/com/avaje/ebean/annotation/WhenCreated.java

@@ -0,0 +1,38 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * For a timestamp property that is set to the datetime when the entity is
+ * created/inserted.
+ * <p>
+ * This is effectively an alias for @CreatedTimestamp and added to hint
+ * towards a better naming convention (WhenCreated, WhenModified).
+ * </p>
+ * <p>
+ * An alternative to using this annotation would be to use insertable=false,
+ * updateable=false with @Column and have the DB insert the current time
+ * (default value on the DB column is SYSTIME etc).
+ * </p>
+ * <p>
+ * The downside to this approach is that the inserted entity does not have the
+ * timestamp value after the insert has occurred. You need to fetch the entity
+ * back to get the inserted timestamp if you want to used it.
+ * </p>
+ *
+ * <h3>Example:</h3>
+ * <pre>{@code
+ *
+ *   @WhenCreated
+ *   Timestamp whenCreated;
+ *
+ * }</pre>
+ */
+@Target({ ElementType.FIELD, ElementType.METHOD })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface WhenCreated {
+
+}

src/main/java/com/avaje/ebean/annotation/WhenModified.java

@@ -0,0 +1,19 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * For a timestamp property that is set to the datetime when the entity was last modified.
+ * <p>
+ * This is effectively an alias for @UpdatedTimestamp and added to hint
+ * towards a better naming convention (WhenCreated, WhenModified).
+ * </p>
+ */
+@Target({ ElementType.FIELD, ElementType.METHOD })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface WhenModified {
+
+}

src/main/java/com/avaje/ebean/annotation/WhoCreated.java

@@ -0,0 +1,29 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Mapped onto a entity bean property that represents the user id of
+ * who created the entity>
+ * <p>
+ * To use this annotation you need to implement CurrentUserProvider.
+ * The type of the bean property should match the type returned by
+ * CurrentUserProvider.
+ *</p>
+
+ * <h3>Example:</h3>
+ * <pre>{@code
+ *
+ *   @WhoCreated
+ *   String whoCreated;
+ *
+ * }</pre>
+ */
+@Target({ ElementType.FIELD, ElementType.METHOD })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface WhoCreated {
+
+}

src/main/java/com/avaje/ebean/annotation/WhoModified.java

@@ -0,0 +1,29 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Mapped onto a entity bean property that represents the user id of
+ * who last modified the entity>
+ * <p>
+ * To use this annotation you need to implement CurrentUserProvider.
+ * The type of the bean property should match the type returned by
+ * CurrentUserProvider.
+ * </p>
+ *
+ * <h3>Example:</h3>
+ * <pre>{@code
+ *
+ *   @WhoModified
+ *   String whoModified;
+ *
+ * }</pre>
+ */
+@Target({ElementType.FIELD, ElementType.METHOD})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface WhoModified {
+
+}

src/main/java/com/avaje/ebean/bean/BeanCollection.java

@@ -31,6 +31,16 @@ public interface BeanCollection<E> extends Serializable {
     ALL
   }
 
+  /**
+   * Add a bean to the list/set with modifyListen notification.
+   */
+  void addBean(E bean);
+
+  /**
+   * Remove a bean to the list/set with modifyListen notification.
+   */
+  void removeBean(E bean);
+
   /**
    * Reset the collection back to an empty state ready for reloading.
    * <p>

src/main/java/com/avaje/ebean/bean/BeanCollectionAdd.java

@@ -12,5 +12,5 @@ public interface BeanCollectionAdd {
   /**
    * Add a loaded bean to the collection.
    */
-  void addBean(EntityBean bean);
+  void addEntityBean(EntityBean bean);
 }

src/main/java/com/avaje/ebean/bean/CallStack.java

@@ -6,7 +6,7 @@ import java.util.Arrays;
 /**
  * Represent the call stack (stack trace elements).
  * <p>
- * Used with a query to identify a CallStackQuery for AutoFetch automatic query
+ * Used with a query to identify a CallStackQuery for AutoTune automatic query
  * tuning.
  * </p>
  * <p>
@@ -26,16 +26,12 @@ public final class CallStack implements Serializable {
 
   private final StackTraceElement[] callStack;
 
-  public CallStack(StackTraceElement[] callStack) {
+  public CallStack(StackTraceElement[] callStack, int zeroHash, int pathHash) {
     this.callStack = callStack;
-    this.zeroHash = enc(callStack[0].hashCode());
-    int hc = 0;
-    for (int i = 1; i < callStack.length; i++) {
-      hc = 31 * hc + callStack[i].hashCode();
-    }
-    this.pathHash = enc(hc);
+    this.zeroHash = enc(zeroHash);
+    this.pathHash = enc(pathHash);
   }
-  
+
   public int hashCode() {
     int hc = 0;
     for (int i = 0; i < callStack.length; i++) {
@@ -87,8 +83,19 @@ public final class CallStack implements Serializable {
     return zeroHash + ":" + pathHash + ":" + callStack[0];
   }
 
+  /**
+   * Return the call stack lines appended with the given newLine string.
+   */
+  public String description(String newLine) {
+    StringBuilder sb = new StringBuilder(400);
+    for (int i = 0; i < callStack.length; i++) {
+      sb.append(callStack[i].toString()).append(newLine);
+    }
+    return sb.toString();
+  }
+
   public String getOriginKey(int queryHash) {
-    return zeroHash + "." + enc(queryHash) + "." + pathHash;
+    return enc(queryHash)+ "." + zeroHash + "." + pathHash;
   }
 
   private static final int radix = 1 << 6;

src/main/java/com/avaje/ebean/bean/EntityBean.java

@@ -73,16 +73,6 @@ public interface EntityBean extends Serializable {
    */
   EntityBeanIntercept _ebean_intercept();
 
-  /**
-   * Create a copy of this entity bean.
-   * <p>
-   * This occurs when a bean is changed. The copy represents the bean as it was
-   * initially (oldValues) before any changes where made. This is used for
-   * optimistic concurrency control.
-   * </p>
-   */
-  Object _ebean_createCopy();
-
   /**
    * Set the value of a field of an entity bean of this type.
    * <p>

src/main/java/com/avaje/ebean/bean/EntityBeanIntercept.java

@@ -45,7 +45,7 @@ public final class EntityBeanIntercept implements Serializable {
   /**
    * The actual entity bean that 'owns' this intercept.
    */
-  private EntityBean owner;
+  private final EntityBean owner;
 
   private EntityBean embeddedOwner;
   private int embeddedOwnerIndex;
@@ -72,7 +72,7 @@ public final class EntityBeanIntercept implements Serializable {
   /**
    * Used when a bean is partially filled.
    */
-  private boolean[] loadedProps;
+  private final boolean[] loadedProps;
   
   private boolean fullyLoadedBean;
 
@@ -449,7 +449,18 @@ public final class EntityBeanIntercept implements Serializable {
   public int getPropertyLength() {
     return owner._ebean_getPropertyNames().length;
   }
-  
+
+  /**
+   * Set the loaded state of the property given it's name.
+   */
+  public void setPropertyLoaded(String propertyName, boolean loaded) {
+    int position = findProperty(propertyName);
+    if (position == -1) {
+      throw new IllegalArgumentException("Property "+propertyName+" not found");
+    }
+    loadedProps[position] = loaded;
+  }
+
   /**
    * Set the property to be treated as unloaded. Used for properties initialised in default
    * constructor.
@@ -496,7 +507,7 @@ public final class EntityBeanIntercept implements Serializable {
     setDirty(true);
   }
   
-  private void setChangedProperty(int propertyIndex) {
+  public void setChangedProperty(int propertyIndex) {
     if (changedProps == null) {
       changedProps = new boolean[owner._ebean_getPropertyNames().length];
     }
@@ -581,7 +592,29 @@ public final class EntityBeanIntercept implements Serializable {
       }
     }
   }
-  
+
+  /**
+   * Return true if any of the given property names are dirty.
+   */
+  public boolean hasDirtyProperty(Set<String> propertyNames) {
+
+    String[] names = owner._ebean_getPropertyNames();
+    int len = getPropertyLength();
+    for (int i = 0; i < len; i++) {
+      if (changedProps != null && changedProps[i]) {
+        // the property has been changed on this bean
+        if (propertyNames.contains(names[i])) {
+          return true;
+        }
+      } else if (embeddedDirty != null && embeddedDirty[i]) {
+        if (propertyNames.contains(names[i])) {
+          return true;
+        }
+      }
+    }
+    return false;
+  }
+
   /**
    * Return a map of dirty properties with their new and old values.
    */
@@ -608,7 +641,7 @@ public final class EntityBeanIntercept implements Serializable {
       } else if (embeddedDirty != null && embeddedDirty[i]) {
         // an embedded property has been changed - recurse
         EntityBean embeddedBean = (EntityBean)owner._ebean_getField(i);
-        embeddedBean._ebean_getIntercept().addDirtyPropertyValues(dirtyValues, getProperty(i)+".");
+        embeddedBean._ebean_getIntercept().addDirtyPropertyValues(dirtyValues, getProperty(i) + ".");
       }
     }
   }
@@ -638,6 +671,20 @@ public final class EntityBeanIntercept implements Serializable {
     return hash;
   }
 
+  /**
+   * Return a loaded property hash.
+   */
+  public int getLoadedPropertyHash() {
+    int hash = 37;
+    int len = getPropertyLength();
+    for (int i = 0; i < len; i++) {
+      if (isLoadedProperty(i)) {
+        hash = hash * 31 + (i+1);
+      }
+    }
+    return hash;
+  }
+
   /**
    * Return the set of property names for changed properties.
    */
@@ -877,7 +924,7 @@ public final class EntityBeanIntercept implements Serializable {
     } else {
       return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), Boolean.valueOf(oldValue), Boolean.valueOf(newValue));
+    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
@@ -892,7 +939,7 @@ public final class EntityBeanIntercept implements Serializable {
     } else {
       return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), Integer.valueOf(oldValue), Integer.valueOf(newValue));
+    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
@@ -908,7 +955,7 @@ public final class EntityBeanIntercept implements Serializable {
       return null;
     }
     
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), Long.valueOf(oldValue), Long.valueOf(newValue));
+    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
@@ -923,7 +970,7 @@ public final class EntityBeanIntercept implements Serializable {
     } else {
       return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), Double.valueOf(oldValue), Double.valueOf(newValue));
+    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
@@ -938,7 +985,7 @@ public final class EntityBeanIntercept implements Serializable {
     } else {
       return null;
     }
-    return (pcs == null) ? null :  new PropertyChangeEvent(owner, getProperty(propertyIndex), Float.valueOf(oldValue), Float.valueOf(newValue));
+    return (pcs == null) ? null :  new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
@@ -953,7 +1000,7 @@ public final class EntityBeanIntercept implements Serializable {
     } else {
       return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), Short.valueOf(oldValue), Short.valueOf(newValue));
+    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
@@ -968,7 +1015,7 @@ public final class EntityBeanIntercept implements Serializable {
     } else {
       return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), Character.valueOf(oldValue), Character.valueOf(newValue));
+    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**
@@ -983,7 +1030,7 @@ public final class EntityBeanIntercept implements Serializable {
     } else {
       return null;
     }
-    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), Byte.valueOf(oldValue), Byte.valueOf(newValue));
+    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
   }
 
   /**

src/main/java/com/avaje/ebean/bean/NodeUsageCollector.java

@@ -1,13 +1,13 @@
 package com.avaje.ebean.bean;
 
 import java.lang.ref.WeakReference;
-import java.util.HashSet;
+import java.util.LinkedHashSet;
+import java.util.Set;
 
 /**
- * Collects profile information for a bean (or reference/proxy bean) at a given
- * AutoFetchNode.
+ * Collects profile information for a bean (or reference/proxy bean) at a given node.
  * <p>
- * The AutoFetchNode identifies the location of the bean in the object graph.
+ * The node identifies the location of the bean in the object graph.
  * </p>
  * <p>
  * It has to use a weak reference so as to ensure that it does not stop the
@@ -29,7 +29,7 @@ public final class NodeUsageCollector {
   /**
    * The properties used at this profile point.
    */
-  private final HashSet<String> used = new HashSet<String>();
+  private final Set<String> used = new LinkedHashSet<String>();
 
   /**
    * set to true if the bean is modified (setter called)
@@ -105,7 +105,7 @@ public final class NodeUsageCollector {
   /**
    * Return the set of used properties.
    */
-  public HashSet<String> getUsed() {
+  public Set<String> getUsed() {
     return used;
   }
 

src/main/java/com/avaje/ebean/bean/NodeUsageListener.java

@@ -9,7 +9,7 @@ public interface NodeUsageListener {
    * Collect node usage "profiling" information.
    * <p>
    * This is the properties that are used for a given bean in the object graph.
-   * This information is used by autoFetch to tune queries.
+   * This information is used by autoTune to tune queries.
    * </p>
    */
   void collectNodeUsage(NodeUsageCollector collector);

src/main/java/com/avaje/ebean/bean/ObjectGraphNode.java

@@ -82,6 +82,7 @@ public final class ObjectGraphNode implements Serializable {
     }
     
     ObjectGraphNode e = (ObjectGraphNode) obj;
+    //noinspection StringEquality
     return  ((e.path == path) || (e.path != null && e.path.equals(path)))
         && e.originQueryPoint.equals(originQueryPoint);
   }

src/main/java/com/avaje/ebean/bean/ObjectGraphOrigin.java

@@ -9,7 +9,7 @@ import java.io.Serializable;
  * The call stack is included so that the query can have different tuned fetches
  * for each unique call stack. For example, a query to fetch a customer could be
  * called by three different methods and each can be treated as a separate
- * origin point (and autoFetch can tune each one separately).
+ * origin point (and autoTune can tune each one separately).
  * </p>
  */
 public final class ObjectGraphOrigin implements Serializable {

src/main/java/com/avaje/ebean/bean/PersistenceContext.java

@@ -74,12 +74,12 @@ public interface PersistenceContext {
      * The bean was previously deleted from this persistence context (can't hit
      * L2 cache).
      */
-    public static WithOption DELETED = new WithOption(true);
+    public static final WithOption DELETED = new WithOption();
 
     private final boolean deleted;
     private final Object bean;
 
-    private WithOption(boolean deleted) {
+    private WithOption() {
       this.deleted = true;
       this.bean = null;
     }

src/main/java/com/avaje/ebean/cache/ServerCacheStatistics.java

@@ -40,7 +40,8 @@ public class ServerCacheStatistics {
   protected long evictByLRU;
 
   public String toString() {
-    StringBuilder sb = new StringBuilder();
+    //noinspection StringBufferReplaceableByString
+    StringBuilder sb = new StringBuilder(80);
     sb.append(cacheName);
     sb.append(" maxSize:").append(maxSize);
     sb.append(" size:").append(size);

src/main/java/com/avaje/ebean/common/BeanList.java

@@ -60,7 +60,7 @@ public final class BeanList<E> extends AbstractBeanCollection<E> implements List
   }
 
   @SuppressWarnings("unchecked")
-  public void addBean(EntityBean bean) {
+  public void addEntityBean(EntityBean bean) {
     list.add((E) bean);
   }
 
@@ -206,6 +206,11 @@ public final class BeanList<E> extends AbstractBeanCollection<E> implements List
     list.add(index, element);
   }
 
+  @Override
+  public void addBean(E bean) {
+    add(bean);
+  }
+
   public boolean add(E o) {
     checkReadOnly();
     init();
@@ -319,6 +324,13 @@ public final class BeanList<E> extends AbstractBeanCollection<E> implements List
     return list.listIterator(index);
   }
 
+  @Override
+  public void removeBean(E bean) {
+    if (list.remove(bean)) {
+      getModifyHolder().modifyRemoval(bean);
+    }
+  }
+
   public E remove(int index) {
     checkReadOnly();
     init();
@@ -343,41 +355,41 @@ public final class BeanList<E> extends AbstractBeanCollection<E> implements List
     return list.remove(o);
   }
 
-  public boolean removeAll(Collection<?> c) {
+  public boolean removeAll(Collection<?> beans) {
     checkReadOnly();
     init();
     if (modifyRemoveListening) {
       boolean changed = false;
-      Iterator<?> it = c.iterator();
-      while (it.hasNext()) {
-        Object o = it.next();
-        if (list.remove(o)) {
-          modifyRemoval(o);
+      for (Object bean : beans) {
+        if (list.remove(bean)) {
+          // register this bean as having been removed
+          modifyRemoval(bean);
           changed = true;
         }
       }
       return changed;
     }
-    return list.removeAll(c);
+    return list.removeAll(beans);
   }
 
-  public boolean retainAll(Collection<?> c) {
+  public boolean retainAll(Collection<?> retainBeans) {
     checkReadOnly();
     init();
     if (modifyRemoveListening) {
       boolean changed = false;
       Iterator<E> it = list.iterator();
       while (it.hasNext()) {
-        Object o = it.next();
-        if (!c.contains(o)) {
+        Object bean = it.next();
+        if (!retainBeans.contains(bean)) {
+          // removing this bean
           it.remove();
-          modifyRemoval(o);
+          modifyRemoval(bean);
           changed = true;
         }
       }
       return changed;
     }
-    return list.retainAll(c);
+    return list.retainAll(retainBeans);
   }
 
   public E set(int index, E element) {
@@ -415,6 +427,7 @@ public final class BeanList<E> extends AbstractBeanCollection<E> implements List
 
   public <T> T[] toArray(T[] a) {
     init();
+    //noinspection SuspiciousToArrayCall
     return list.toArray(a);
   }
 

src/main/java/com/avaje/ebean/common/BeanMap.java

@@ -1,15 +1,14 @@
 package com.avaje.ebean.common;
 
-import java.util.Collection;
-import java.util.Collections;
-import java.util.Iterator;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import java.util.Set;
-
 import com.avaje.ebean.bean.BeanCollectionLoader;
 import com.avaje.ebean.bean.EntityBean;
 
+import java.util.Collection;
+import java.util.Collections;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Set;
+
 /**
  * Map capable of lazy loading.
  */
@@ -148,8 +147,7 @@ public final class BeanMap<K, E> extends AbstractBeanCollection<E> implements Ma
   public Collection<E> getActualDetails() {
     return map.values();
   }
-  
-  
+
   /**
    * Returns the map entrySet.
    * <p>
@@ -159,7 +157,6 @@ public final class BeanMap<K, E> extends AbstractBeanCollection<E> implements Ma
    */
   public Collection<?> getActualEntries() {
     return map.entrySet();
-
   }
 
   public String toString() {
@@ -195,9 +192,9 @@ public final class BeanMap<K, E> extends AbstractBeanCollection<E> implements Ma
     checkReadOnly();
     initClear();
     if (modifyRemoveListening) {
-      for (K key : map.keySet()) {
-        E o = map.remove(key);
-        modifyRemoval(o);
+      // add all beans to the removal list
+      for (E bean : map.values()) {
+        modifyRemoval(bean);
       }
     }
     map.clear();
@@ -249,27 +246,40 @@ public final class BeanMap<K, E> extends AbstractBeanCollection<E> implements Ma
     checkReadOnly();
     init();
     if (modifyListening) {
-      Object o = map.put(key, value);
-      modifyAddition(value);
-      modifyRemoval(o);
+      Object oldBean = map.put(key, value);
+      if (value != oldBean) {
+        // register the add of the new and the removal of the old
+        modifyAddition(value);
+        modifyRemoval(oldBean);
+      }
     }
     return map.put(key, value);
   }
 
   @SuppressWarnings({ "unchecked", "rawtypes" })
-  public void putAll(Map<? extends K, ? extends E> t) {
+  public void putAll(Map<? extends K, ? extends E> puts) {
     checkReadOnly();
     init();
     if (modifyListening) {
-      Iterator it = t.entrySet().iterator();
-      while (it.hasNext()) {
-        Map.Entry entry = (Map.Entry) it.next();
-        Object o = map.put((K) entry.getKey(), (E) entry.getValue());
-        modifyAddition((E) entry.getValue());
-        modifyRemoval(o);
+      for (Entry<? extends K, ? extends E> entry : puts.entrySet()) {
+        Object oldBean = map.put(entry.getKey(), entry.getValue());
+        if (entry.getValue() != oldBean) {
+          modifyAddition(entry.getValue());
+          modifyRemoval(oldBean);
+        }
       }
     }
-    map.putAll(t);
+    map.putAll(puts);
+  }
+
+  @Override
+  public void addBean(E bean) {
+    throw new IllegalStateException("Method not allowed on Map. Please use List instead.");
+  }
+
+  @Override
+  public void removeBean(E bean) {
+    throw new IllegalStateException("Method not allowed on Map. Please use List instead.");
   }
 
   public E remove(Object key) {

src/main/java/com/avaje/ebean/common/BeanSet.java

@@ -53,7 +53,7 @@ public final class BeanSet<E> extends AbstractBeanCollection<E> implements Set<E
   }
 
   @SuppressWarnings("unchecked")
-  public void addBean(EntityBean bean) {
+  public void addEntityBean(EntityBean bean) {
     set.add((E) bean);
   }
 
@@ -174,6 +174,18 @@ public final class BeanSet<E> extends AbstractBeanCollection<E> implements Set<E
     return set.hashCode();
   }
 
+  @Override
+  public void addBean(E bean) {
+    add(bean);
+  }
+
+  @Override
+  public void removeBean(E bean) {
+    if (set.remove(bean)) {
+      getModifyHolder().modifyRemoval(bean);
+    }
+  }
+
   // -----------------------------------------------------//
   // proxy method for map
   // -----------------------------------------------------//
@@ -192,32 +204,29 @@ public final class BeanSet<E> extends AbstractBeanCollection<E> implements Set<E
     return set.add(o);
   }
 
-  public boolean addAll(Collection<? extends E> c) {
+  public boolean addAll(Collection<? extends E> addCollection) {
     checkReadOnly();
     init();
     if (modifyAddListening) {
       boolean changed = false;
-      Iterator<? extends E> it = c.iterator();
-      while (it.hasNext()) {
-        E o = it.next();
-        if (set.add(o)) {
-          modifyAddition(o);
+      for (E bean : addCollection) {
+        if (set.add(bean)) {
+          // register the addition of the bean
+          modifyAddition(bean);
           changed = true;
         }
       }
       return changed;
     }
-    return set.addAll(c);
+    return set.addAll(addCollection);
   }
 
   public void clear() {
     checkReadOnly();
     initClear();
     if (modifyRemoveListening) {
-      Iterator<E> it = set.iterator();
-      while (it.hasNext()) {
-        E e = it.next();
-        modifyRemoval(e);
+      for (E bean : set) {
+        modifyRemoval(bean);
       }
     }
     set.clear();
@@ -262,41 +271,40 @@ public final class BeanSet<E> extends AbstractBeanCollection<E> implements Set<E
     return set.remove(o);
   }
 
-  public boolean removeAll(Collection<?> c) {
+  public boolean removeAll(Collection<?> beans) {
     checkReadOnly();
     init();
     if (modifyRemoveListening) {
       boolean changed = false;
-      Iterator<?> it = c.iterator();
-      while (it.hasNext()) {
-        Object o = it.next();
-        if (set.remove(o)) {
-          modifyRemoval(o);
+      for (Object bean : beans) {
+        if (set.remove(bean)) {
+          modifyRemoval(bean);
           changed = true;
         }
       }
       return changed;
     }
-    return set.removeAll(c);
+    return set.removeAll(beans);
   }
 
-  public boolean retainAll(Collection<?> c) {
+  public boolean retainAll(Collection<?> beans) {
     checkReadOnly();
     init();
     if (modifyRemoveListening) {
       boolean changed = false;
       Iterator<?> it = set.iterator();
       while (it.hasNext()) {
-        Object o = it.next();
-        if (!c.contains(o)) {
+        Object bean = it.next();
+        if (!beans.contains(bean)) {
+          // not retaining this bean so add it to the removal list
           it.remove();
-          modifyRemoval(o);
+          modifyRemoval(bean);
           changed = true;
         }
       }
       return changed;
     }
-    return set.retainAll(c);
+    return set.retainAll(beans);
   }
 
   public int size() {
@@ -311,6 +319,7 @@ public final class BeanSet<E> extends AbstractBeanCollection<E> implements Set<E
 
   public <T> T[] toArray(T[] a) {
     init();
+    //noinspection SuspiciousToArrayCall
     return set.toArray(a);
   }
 

src/main/java/com/avaje/ebean/common/ModifyCollection.java

@@ -40,9 +40,7 @@ class ModifyCollection<E> implements Collection<E> {
 
   public boolean addAll(Collection<? extends E> collection) {
     boolean changed = false;
-    Iterator<? extends E> it = collection.iterator();
-    while (it.hasNext()) {
-      E o = it.next();
+    for (E o : collection) {
       if (c.add(o)) {
         owner.modifyAddition(o);
         changed = true;
@@ -51,27 +49,33 @@ class ModifyCollection<E> implements Collection<E> {
     return changed;
   }
 
+  @Override
   public void clear() {
     c.clear();
   }
 
+  @Override
   public boolean contains(Object o) {
     return c.contains(o);
   }
 
+  @Override
   public boolean containsAll(Collection<?> collection) {
     return c.containsAll(collection);
   }
 
+  @Override
   public boolean isEmpty() {
     return c.isEmpty();
   }
 
+  @Override
   public Iterator<E> iterator() {
     Iterator<E> it = c.iterator();
     return new ModifyIterator<E>(owner, it);
   }
 
+  @Override
   public boolean remove(Object o) {
     if (c.remove(o)) {
       owner.modifyRemoval(o);
@@ -80,42 +84,47 @@ class ModifyCollection<E> implements Collection<E> {
     return false;
   }
 
+  @Override
   public boolean removeAll(Collection<?> collection) {
     boolean changed = false;
-    Iterator<?> it = collection.iterator();
-    while (it.hasNext()) {
-      Object o = (Object) it.next();
-      if (c.remove(o)) {
-        owner.modifyRemoval(o);
+    for (Object bean : collection) {
+      if (c.remove(bean)) {
+        owner.modifyRemoval(bean);
         changed = true;
       }
     }
     return changed;
   }
 
+  @Override
   public boolean retainAll(Collection<?> collection) {
     boolean changed = false;
     Iterator<?> it = c.iterator();
     while (it.hasNext()) {
-      Object o = (Object) it.next();
-      if (!collection.contains(o)) {
+      Object bean = it.next();
+      if (!collection.contains(bean)) {
+        // not retaining this bean so add to removals
         it.remove();
-        owner.modifyRemoval(o);
+        owner.modifyRemoval(bean);
         changed = true;
       }
     }
     return changed;
   }
 
+  @Override
   public int size() {
     return c.size();
   }
 
+  @Override
   public Object[] toArray() {
     return c.toArray();
   }
 
+  @Override
   public <T> T[] toArray(T[] a) {
+    //noinspection SuspiciousToArrayCall
     return c.toArray(a);
   }
 

src/main/java/com/avaje/ebean/common/ModifyHolder.java

@@ -58,7 +58,7 @@ class ModifyHolder<E> implements Serializable {
   void modifyRemoval(Object bean) {
     if (bean != null) {
       // If it is to be added then just remove the addition
-      if (!modifyAdditions.remove((E) bean)) {
+      if (!modifyAdditions.remove(bean)) {
         modifyDeletions.add((E) bean);
       }
     }

src/main/java/com/avaje/ebean/common/ModifyList.java

@@ -1,7 +1,6 @@
 package com.avaje.ebean.common;
 
 import java.util.Collection;
-import java.util.Iterator;
 import java.util.List;
 import java.util.ListIterator;
 
@@ -39,12 +38,10 @@ class ModifyList<E> extends ModifyCollection<E> implements List<E> {
     owner.modifyAddition(element);
   }
 
-  public boolean addAll(int index, Collection<? extends E> co) {
-    if (list.addAll(index, co)) {
-      Iterator<? extends E> it = co.iterator();
-      while (it.hasNext()) {
-        E o = it.next();
-        owner.modifyAddition(o);
+  public boolean addAll(int index, Collection<? extends E> addCollection) {
+    if (list.addAll(index, addCollection)) {
+      for (E bean : addCollection) {
+        owner.modifyAddition(bean);
       }
       return true;
     }

src/main/java/com/avaje/ebean/common/ModifyListIterator.java

@@ -67,9 +67,7 @@ class ModifyListIterator<E> implements ListIterator<E> {
   }
 
   public void set(E o) {
-    if (last == null) {
-      // in theory this is not allowed
-    } else {
+    if (last != null) {
       owner.modifyRemoval(last);
       owner.modifyAddition(o);
     }

src/main/java/com/avaje/ebean/config/AbstractNamingConvention.java

@@ -1,12 +1,10 @@
 package com.avaje.ebean.config;
 
+import com.avaje.ebean.config.dbplatform.DatabasePlatform;
+
 import javax.persistence.Inheritance;
 import javax.persistence.Table;
 
-import com.avaje.ebean.config.dbplatform.DatabasePlatform;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 /**
  * Provides some base implementation for NamingConventions.
  *
@@ -14,31 +12,39 @@ import org.slf4j.LoggerFactory;
  */
 public abstract class AbstractNamingConvention implements NamingConvention {
 
-  /** The Constant logger. */
-  private static final Logger logger = LoggerFactory.getLogger(AbstractNamingConvention.class);
-
-  /** The Constant DEFAULT_SEQ_FORMAT. */
+  /**
+   * The Constant DEFAULT_SEQ_FORMAT.
+   */
   public static final String DEFAULT_SEQ_FORMAT = "{table}_seq";
 
-  /** Sequence Format that includes the Primary Key column */
+  /**
+   * Sequence Format that includes the Primary Key column
+   */
   public static final String TABLE_PKCOLUMN_SEQ_FORMAT = "{table}_{column}_seq";
 
-  /** The catalog. */
+  /**
+   * The catalog.
+   */
   private String catalog;
 
-  /** The schema. */
+  /**
+   * The schema.
+   */
   private String schema;
 
-  /** The sequence format. */
+  /**
+   * The sequence format.
+   */
   private String sequenceFormat;
 
-  /** The database platform. */
+  /**
+   * The database platform.
+   */
   protected DatabasePlatform databasePlatform;
 
-  /** The max length of constraint names. */
-  protected int maxConstraintNameLength;
-
-  /** Used to trim off extra prefix for M2M. */
+  /**
+   * Used to trim off extra prefix for M2M.
+   */
   protected int rhsPrefixLength = 3;
 
   protected boolean useForeignKeyPrefix;
@@ -62,8 +68,7 @@ public abstract class AbstractNamingConvention implements NamingConvention {
   }
 
   /**
-   * Construct with the default sequence format ("{table}_seq") and
-   * useForeignKeyPrefix as true.
+   * Construct with the default sequence format ("{table}_seq") and useForeignKeyPrefix as true.
    */
   public AbstractNamingConvention() {
     this(DEFAULT_SEQ_FORMAT);
@@ -71,9 +76,6 @@ public abstract class AbstractNamingConvention implements NamingConvention {
 
   public void setDatabasePlatform(DatabasePlatform databasePlatform) {
     this.databasePlatform = databasePlatform;
-    this.maxConstraintNameLength = databasePlatform.getDbDdlSyntax().getMaxConstraintNameLength();
-
-    logger.trace("Using maxConstraintNameLength of " + maxConstraintNameLength);
   }
 
   public String getSequenceName(String tableName, String pkColumn) {
@@ -218,11 +220,11 @@ public abstract class AbstractNamingConvention implements NamingConvention {
     }
     buffer.append(rhsTableName);
 
-    int maxConstraintNameLength = databasePlatform.getDbDdlSyntax().getMaxConstraintNameLength();
+    int maxTableNameLength = databasePlatform.getMaxTableNameLength();
 
     // maxConstraintNameLength is used as the max table name length.
-    if (buffer.length() > maxConstraintNameLength) {
-      buffer.setLength(maxConstraintNameLength);
+    if (buffer.length() > maxTableNameLength) {
+      buffer.setLength(maxTableNameLength);
     }
 
     return new TableName(lhsTable.getCatalog(), lhsTable.getSchema(), buffer.toString());
@@ -239,7 +241,7 @@ public abstract class AbstractNamingConvention implements NamingConvention {
     if (t != null && !isEmpty(t.name())) {
       // Note: empty catalog and schema are converted to null
       // Only need to convert quoted identifiers from annotations
-      return new TableName(quoteIdentifiers(t.catalog()), quoteIdentifiers(t.schema()),  quoteIdentifiers(t.name()));
+      return new TableName(quoteIdentifiers(t.catalog()), quoteIdentifiers(t.schema()), quoteIdentifiers(t.name()));
     }
 
     // No annotation
@@ -272,10 +274,7 @@ public abstract class AbstractNamingConvention implements NamingConvention {
    * Checks string is null or empty .
    */
   protected boolean isEmpty(String s) {
-    if (s == null || s.trim().length() == 0) {
-      return true;
-    }
-    return false;
+    return s == null || s.trim().length() == 0;
   }
 
   /**

src/main/java/com/avaje/ebean/config/AutoTuneConfig.java

@@ -0,0 +1,235 @@
+package com.avaje.ebean.config;
+
+/**
+ * Defines the AutoTune behaviour for a EbeanServer.
+ */
+public class AutoTuneConfig {
+
+  private AutoTuneMode mode = AutoTuneMode.DEFAULT_ON;
+
+  private String queryTuningFile = "ebean-autotune.xml";
+
+  private boolean queryTuning;
+
+  private boolean queryTuningAddVersion;
+
+  private boolean profiling;
+
+  private String profilingFile = "ebean-profiling";
+
+  private int profilingBase = 5;
+
+  private double profilingRate = 0.01;
+
+  private int profilingUpdateFrequency;
+
+  private int garbageCollectionWait = 100;
+  
+  private boolean skipCollectionOnShutdown;
+
+  public AutoTuneConfig() {
+  }
+
+  /**
+   * Return the name of the file that holds the query tuning information.
+   */
+  public String getQueryTuningFile() {
+    return queryTuningFile;
+  }
+
+  /**
+   * Set the name of the file that holds the query tuning information.
+   */
+  public void setQueryTuningFile(String queryTuningFile) {
+    this.queryTuningFile = queryTuningFile;
+  }
+
+  /**
+   * Return the name of the file that profiling information is written to.
+   */
+  public String getProfilingFile() {
+    return profilingFile;
+  }
+
+  /**
+   * Set the name of the file that profiling information is written to.
+   */
+  public void setProfilingFile(String profilingFile) {
+    this.profilingFile = profilingFile;
+  }
+
+  /**
+   * Return the frequency in seconds the profiling should be collected and automatically applied to the tuning.
+   */
+  public int getProfilingUpdateFrequency() {
+    return profilingUpdateFrequency;
+  }
+
+  /**
+   * Set the frequency in seconds the profiling should be collected and automatically applied to the tuning.
+   */
+  public void setProfilingUpdateFrequency(int profilingUpdateFrequency) {
+    this.profilingUpdateFrequency = profilingUpdateFrequency;
+  }
+
+  /**
+   * Return the mode used when autoTune has not been explicit defined on a
+   * query.
+   */
+  public AutoTuneMode getMode() {
+    return mode;
+  }
+
+  /**
+   * Set the mode used when autoTune has not been explicit defined on a query.
+   */
+  public void setMode(AutoTuneMode mode) {
+    this.mode = mode;
+  }
+
+  /**
+   * Return true if the queries are being tuned.
+   */
+  public boolean isQueryTuning() {
+    return queryTuning;
+  }
+
+  /**
+   * Set to true if the queries should be tuned by autoTune.
+   */
+  public void setQueryTuning(boolean queryTuning) {
+    this.queryTuning = queryTuning;
+  }
+
+  /**
+   * Return true if the version property should be added when the query is
+   * tuned.
+   * <p>
+   * If this is false then the version property will be added when profiling
+   * detects that the bean is possibly going to be modified.
+   * </p>
+   */
+  public boolean isQueryTuningAddVersion() {
+    return queryTuningAddVersion;
+  }
+
+  /**
+   * Set to true to force the version property to be always added by the query
+   * tuning.
+   * <p>
+   * If this is false then the version property will be added when profiling
+   * detects that the bean is possibly going to be modified.
+   * </p>
+   * <p>
+   * Generally this is not expected to be turned on.
+   * </p>
+   */
+  public void setQueryTuningAddVersion(boolean queryTuningAddVersion) {
+    this.queryTuningAddVersion = queryTuningAddVersion;
+  }
+
+  /**
+   * Return true if profiling information should be collected.
+   */
+  public boolean isProfiling() {
+    return profiling;
+  }
+
+  /**
+   * Set to true if profiling information should be collected.
+   * <p>
+   * The profiling information is collected and then used to generate the tuned
+   * queries for autoTune.
+   * </p>
+   */
+  public void setProfiling(boolean profiling) {
+    this.profiling = profiling;
+  }
+
+  /**
+   * Return the base number of queries to profile before changing to profile
+   * only a percentage of following queries (profileRate).
+   */
+  public int getProfilingBase() {
+    return profilingBase;
+  }
+
+  /**
+   * Set the based number of queries to profile.
+   */
+  public void setProfilingBase(int profilingBase) {
+    this.profilingBase = profilingBase;
+  }
+
+  /**
+   * Return the rate (%) of queries to be profiled after the 'base' amount of
+   * profiling.
+   */
+  public double getProfilingRate() {
+    return profilingRate;
+  }
+
+  /**
+   * Set the rate (%) of queries to be profiled after the 'base' amount of
+   * profiling.
+   */
+  public void setProfilingRate(double profilingRate) {
+    this.profilingRate = profilingRate;
+  }
+
+  /**
+   * Return the time in millis to wait after a system gc to collect profiling
+   * information.
+   * <p>
+   * The profiling information is collected on object finalise. As such we
+   * generally don't want to trigger GC (let the JVM do its thing) but on
+   * shutdown the autoTune manager will trigger System.gc() and then wait
+   * (default 100 millis) to hopefully collect profiling information -
+   * especially for short run unit tests.
+   * </p>
+   */
+  public int getGarbageCollectionWait() {
+    return garbageCollectionWait;
+  }
+
+  /**
+   * Set the time in millis to wait after a System.gc() to collect profiling information.
+   */
+  public void setGarbageCollectionWait(int garbageCollectionWait) {
+    this.garbageCollectionWait = garbageCollectionWait;
+  }
+
+  /**
+   * Return true if profiling collection should be skipped on shutdown.
+   */
+  public boolean isSkipCollectionOnShutdown() {
+    return skipCollectionOnShutdown;
+  }
+
+  /**
+   * Set to true if profiling collection should be skipped on shutdown.
+   */
+  public void setSkipCollectionOnShutdown(boolean skipCollectionOnShutdown) {
+    this.skipCollectionOnShutdown = skipCollectionOnShutdown;
+  }
+
+  /**
+   * Load the settings from the properties file.
+   */
+  public void loadSettings(PropertiesWrapper p) {
+
+    queryTuning = p.getBoolean("autoTune.queryTuning", queryTuning);
+    queryTuningAddVersion = p.getBoolean("autoTune.queryTuningAddVersion", queryTuningAddVersion);
+    queryTuningFile = p.get("autoTune.queryTuningFile", queryTuningFile);
+
+    skipCollectionOnShutdown = p.getBoolean("autoTune.skipCollectionOnShutdown", skipCollectionOnShutdown);
+    
+    mode = p.getEnum(AutoTuneMode.class, "autoTune.mode", mode);
+
+    profiling = p.getBoolean("autoTune.profiling", profiling);
+    profilingBase = p.getInt("autoTune.profilingBase", profilingBase);
+    profilingRate = p.getDouble("autoTune.profilingRate", profilingRate);
+    profilingFile = p.get("autoTune.profilingFile", profilingFile);
+    profilingUpdateFrequency = p.getInt("autoTune.profilingUpdateFrequency", profilingUpdateFrequency);
+  }
+}

src/main/java/com/avaje/ebean/config/AutoTuneMode.java

@@ -0,0 +1,32 @@
+package com.avaje.ebean.config;
+
+import com.avaje.ebean.Query;
+
+/**
+ * The mode for determining if AutoTune will be used for a given query when
+ * {@link Query#setAutoTune(boolean)} has not been explicitly set on a query.
+ * <p>
+ * The explicit control of {@link Query#setAutoTune(boolean)} will always take
+ * precedence. This mode is used when this has not been explicitly set on a
+ * query.
+ * </p>
+ */
+public enum AutoTuneMode {
+
+  /**
+   * Don't implicitly use AutoTune. Must explicitly turn it on.
+   */
+  DEFAULT_OFF,
+
+  /**
+   * Use AutoTune implicitly. Must explicitly turn it off.
+   */
+  DEFAULT_ON,
+
+  /**
+   * Implicitly use AutoTune if the query has not got either select() or join()
+   * defined.
+   */
+  DEFAULT_ONIFEMPTY
+
+}

src/main/java/com/avaje/ebean/config/AutofetchConfig.java

@@ -1,245 +0,0 @@
-package com.avaje.ebean.config;
-
-/**
- * Defines the Autofetch behaviour for a EbeanServer.
- */
-public class AutofetchConfig {
-
-  private AutofetchMode mode = AutofetchMode.DEFAULT_ONIFEMPTY;
-
-  private boolean queryTuning = false;
-
-  private boolean queryTuningAddVersion = false;
-
-  private boolean profiling = false;
-
-  private int profilingMin = 1;
-
-  private int profilingBase = 10;
-
-  private double profilingRate = 0.05;
-
-  private String logDirectory;
-
-  private int profileUpdateFrequency = 60;
-
-  private int garbageCollectionWait = 100;
-  
-  private boolean garbageCollectionOnShutdown;
-
-  public AutofetchConfig() {
-  }
-
-  /**
-   * Return the mode used when autofetch has not been explicit defined on a
-   * query.
-   */
-  public AutofetchMode getMode() {
-    return mode;
-  }
-
-  /**
-   * Set the mode used when autofetch has not been explicit defined on a query.
-   */
-  public void setMode(AutofetchMode mode) {
-    this.mode = mode;
-  }
-
-  /**
-   * Return true if the queries are being tuned.
-   */
-  public boolean isQueryTuning() {
-    return queryTuning;
-  }
-
-  /**
-   * Set to true if the queries should be tuned by autofetch.
-   */
-  public void setQueryTuning(boolean queryTuning) {
-    this.queryTuning = queryTuning;
-  }
-
-  /**
-   * Return true if the version property should be added when the query is
-   * tuned.
-   * <p>
-   * If this is false then the version property will be added when profiling
-   * detects that the bean is possibly going to be modified.
-   * </p>
-   */
-  public boolean isQueryTuningAddVersion() {
-    return queryTuningAddVersion;
-  }
-
-  /**
-   * Set to true to force the version property to be always added by the query
-   * tuning.
-   * <p>
-   * If this is false then the version property will be added when profiling
-   * detects that the bean is possibly going to be modified.
-   * </p>
-   */
-  public void setQueryTuningAddVersion(boolean queryTuningAddVersion) {
-    this.queryTuningAddVersion = queryTuningAddVersion;
-  }
-
-  /**
-   * Return true if profiling information should be collected.
-   */
-  public boolean isProfiling() {
-    return profiling;
-  }
-
-  /**
-   * Set to true if profiling information should be collected.
-   * <p>
-   * The profiling information is collected and then used to generate the tuned
-   * queries for autofetch.
-   * </p>
-   */
-  public void setProfiling(boolean profiling) {
-    this.profiling = profiling;
-  }
-
-  /**
-   * Return the minimum number of queries to profile before autofetch will start
-   * tuning the queries.
-   */
-  public int getProfilingMin() {
-    return profilingMin;
-  }
-
-  /**
-   * Set the minimum number of queries to profile before autofetch will start
-   * tuning the queries.
-   */
-  public void setProfilingMin(int profilingMin) {
-    this.profilingMin = profilingMin;
-  }
-
-  /**
-   * Return the base number of queries to profile before changing to profile
-   * only a percentage of following queries (profileRate).
-   */
-  public int getProfilingBase() {
-    return profilingBase;
-  }
-
-  /**
-   * Set the based number of queries to profile.
-   */
-  public void setProfilingBase(int profilingBase) {
-    this.profilingBase = profilingBase;
-  }
-
-  /**
-   * Return the rate (%) of queries to be profiled after the 'base' amount of
-   * profiling.
-   */
-  public double getProfilingRate() {
-    return profilingRate;
-  }
-
-  /**
-   * Set the rate (%) of queries to be profiled after the 'base' amount of
-   * profiling.
-   */
-  public void setProfilingRate(double profilingRate) {
-    this.profilingRate = profilingRate;
-  }
-
-  /**
-   * Return the log directory to put the autofetch log.
-   */
-  public String getLogDirectory() {
-    return logDirectory;
-  }
-
-  /**
-   * Set the directory to put the autofetch log in.
-   */
-  public void setLogDirectory(String logDirectory) {
-    this.logDirectory = logDirectory;
-  }
-
-  /**
-   * Return the frequency in seconds to update the autofetch tuned queries from
-   * the profiled information.
-   */
-  public int getProfileUpdateFrequency() {
-    return profileUpdateFrequency;
-  }
-
-  /**
-   * Set the frequency in seconds to update the autofetch tuned queries from the
-   * profiled information.
-   */
-  public void setProfileUpdateFrequency(int profileUpdateFrequency) {
-    this.profileUpdateFrequency = profileUpdateFrequency;
-  }
-
-  /**
-   * Return the time in millis to wait after a system gc to collect profiling
-   * information.
-   * <p>
-   * The profiling information is collected on object finalise. As such we
-   * generally don't want to trigger GC (let the JVM do its thing) but on
-   * shutdown the autofetch manager will trigger System.gc() and then wait
-   * (default 100 millis) to hopefully collect profiling information -
-   * especially for short run unit tests.
-   * </p>
-   */
-  public int getGarbageCollectionWait() {
-    return garbageCollectionWait;
-  }
-
-  /**
-   * Set the time in millis to wait after a System.gc() to collect profiling
-   * information.
-   */
-  public void setGarbageCollectionWait(int garbageCollectionWait) {
-    this.garbageCollectionWait = garbageCollectionWait;
-  }
-
-  
-  /**
-   * Return true if GC should be trigger on shutdown.
-   * <p>
-   * Autofetch profiling information is collected as part of garbage collection. 
-   * </p>
-   */
-  public boolean isGarbageCollectionOnShutdown() {
-    return garbageCollectionOnShutdown;
-  }
-
-  /**
-   * Set to true if you want GC to trigger on shutdown.
-   * <p>
-   *  This would be done if you want to try and collect Autofetch profiling information
-   *  on shutdown.
-   * </p>
-   */
-  public void setGarbageCollectionOnShutdown(boolean garbageCollectionOnShutdown) {
-    this.garbageCollectionOnShutdown = garbageCollectionOnShutdown;
-  }
-
-  /**
-   * Load the settings from the properties file.
-   */
-  public void loadSettings(PropertiesWrapper p) {
-
-    logDirectory = p.get("autofetch.logDirectory", logDirectory);
-    queryTuning = p.getBoolean("autofetch.querytuning", queryTuning);
-    queryTuningAddVersion = p.getBoolean("autofetch.queryTuningAddVersion", queryTuningAddVersion);
-    garbageCollectionOnShutdown = p.getBoolean("autofetch.garbageCollectionOnShutdown", garbageCollectionOnShutdown);
-    
-    profiling = p.getBoolean("autofetch.profiling", profiling);
-    mode = p.getEnum(AutofetchMode.class, "autofetch.implicitmode", mode);
-
-    profilingMin = p.getInt("autofetch.profiling.min", profilingMin);
-    profilingBase = p.getInt("autofetch.profiling.base", profilingBase);
-
-    profilingRate = p.getDouble("autofetch.profiling.rate", profilingRate);
-    profileUpdateFrequency = p.getInt("autofetch.profiling.updatefrequency", profileUpdateFrequency);
-  }
-}

src/main/java/com/avaje/ebean/config/AutofetchMode.java

@@ -1,32 +0,0 @@
-package com.avaje.ebean.config;
-
-import com.avaje.ebean.Query;
-
-/**
- * The mode for determining if Autofetch will be used for a given query when
- * {@link Query#setAutofetch(boolean)} has not been explicitly set on a query.
- * <p>
- * The explicit control of {@link Query#setAutofetch(boolean)} will always take
- * precedence. This mode is used when this has not been explicitly set on a
- * query.
- * </p>
- */
-public enum AutofetchMode {
-
-  /**
-   * Don't implicitly use Autofetch. Must explicitly turn it on.
-   */
-  DEFAULT_OFF,
-
-  /**
-   * Use Autofetch implicitly. Must explicitly turn it off.
-   */
-  DEFAULT_ON,
-
-  /**
-   * Implicitly use Autofetch if the query has not got either select() or join()
-   * defined.
-   */
-  DEFAULT_ONIFEMPTY
-
-}

src/main/java/com/avaje/ebean/config/ClassLoadConfig.java

@@ -0,0 +1,143 @@
+package com.avaje.ebean.config;
+
+
+/**
+ * Helper to find classes taking into account the context class loader.
+ */
+public class ClassLoadConfig {
+
+  protected final ClassLoaderContext context;
+
+  /**
+   * Construct with the default classLoader search with context classLoader first.
+   */
+  public ClassLoadConfig() {
+    this(null);
+  }
+
+  /**
+   * Specify the classLoader to use for class detection and new instance creation.
+   */
+  public ClassLoadConfig(ClassLoader classLoader) {
+    this.context = new ClassLoaderContext(classLoader);
+  }
+
+  /**
+   * Return true if the Java.time types are available and should be supported.
+   */
+  public boolean isJavaTimePresent() {
+    return isPresent("java.time.LocalDate");
+  }
+
+  /**
+   * Return true if the Joda types are available and should be supported.
+   */
+  public boolean isJodaTimePresent() {
+    return isPresent("org.joda.time.LocalDateTime");
+  }
+
+  /**
+   * Return true if javax validation annotations like Size and NotNull are present.
+   */
+  public boolean isJavaxValidationAnnotationsPresent() {
+    return isPresent("javax.validation.constraints.NotNull");
+  }
+
+  /**
+   * Return true if Jackson annotations like JsonIgnore are present.
+   */
+  public boolean isJacksonAnnotationsPresent() {
+    return isPresent("com.fasterxml.jackson.annotation.JsonIgnore");
+  }
+
+  /**
+   * Return true if Jackson ObjectMapper is present.
+   */
+  public boolean isJacksonObjectMapperPresent() {
+    return isPresent("com.fasterxml.jackson.databind.ObjectMapper");
+  }
+
+  /**
+   * Return a new instance of the class using the default constructor.
+   */
+  public Object newInstance(String className) {
+
+    try {
+      Class<?> cls = forName(className);
+      return cls.newInstance();
+    } catch (Exception e) {
+      throw new IllegalArgumentException("Error constructing " + className, e);
+    }
+  }
+
+  /**
+   * Return true if the given class is present.
+   */
+  protected boolean isPresent(String className) {
+    try {
+      forName(className);
+      return true;
+    } catch (Throwable ex) {
+      // Class or one of its dependencies is not present...
+      return false;
+    }
+  }
+
+  /**
+   * Load a class taking into account a context class loader (if present).
+   */
+  protected Class<?> forName(String name) throws ClassNotFoundException {
+    return context.forName(name);
+  }
+
+  /**
+   * Wraps the preferred, caller and context class loaders.
+   */
+  protected class ClassLoaderContext {
+
+    /**
+     * Optional - if set only use this classLoader (no fallback).
+     */
+    protected final ClassLoader preferredLoader;
+
+    protected final ClassLoader contextLoader;
+
+    protected final ClassLoader callerLoader;
+
+    ClassLoaderContext(ClassLoader preferredLoader) {
+      this.preferredLoader = preferredLoader;
+      this.callerLoader = ServerConfig.class.getClassLoader();
+      this.contextLoader = contextLoader();
+    }
+
+    ClassLoader contextLoader() {
+      ClassLoader loader = Thread.currentThread().getContextClassLoader();
+      return (loader != null) ? loader: callerLoader;
+    }
+
+    Class<?> forName(String name) throws ClassNotFoundException {
+
+      if (preferredLoader != null) {
+        // only use the explicitly set classLoader
+        return classForName(name, preferredLoader);
+      }
+      try {
+        // try the context loader first
+        return classForName(name, contextLoader);
+      } catch (ClassNotFoundException e) {
+        if (callerLoader == contextLoader) {
+          throw e;
+        } else {
+          // fallback to the caller classLoader
+          return classForName(name, callerLoader);
+        }
+      }
+    }
+
+    Class<?> classForName(String name, ClassLoader classLoader) throws ClassNotFoundException {
+      return Class.forName(name, true, classLoader);
+    }
+
+  }
+}
+

src/main/java/com/avaje/ebean/config/CurrentUserProvider.java

@@ -0,0 +1,16 @@
+package com.avaje.ebean.config;
+
+/**
+ * Provides the current user in order to support 'Who created', 'Who modified' and other audit features.
+ */
+public interface CurrentUserProvider {
+
+  /**
+   * Return the current user id.
+   * <p>
+   *   The type returned should match the type of the properties annotated
+   *   with @WhoCreated and @WhoModified. These are typically String, Long or UUID.
+   * </p>
+   */
+  Object currentUser();
+}

src/main/java/com/avaje/ebean/config/DataSourceConfig.java

@@ -507,8 +507,7 @@ public class DataSourceConfig {
 
     String customProperties = properties.get("customProperties", null);
     if (customProperties != null && customProperties.length() > 0) {
-      Map<String, String> custProps = StringHelper.delimitedToMap(customProperties, ";", "=");
-      this.customProperties = custProps;
+      this.customProperties = StringHelper.delimitedToMap(customProperties, ";", "=");
     }
 
   }

src/main/java/com/avaje/ebean/config/DbConstraintNaming.java

@@ -0,0 +1,209 @@
+package com.avaje.ebean.config;
+
+/**
+ * Naming convention used for constraint names.
+ * <p>
+ * Note that these constraint names are trimmed in the PlatformDdl which can be overridden
+ * but provides a decent default implementation.
+ * </p>
+ */
+public class DbConstraintNaming {
+
+  /**
+   * Defines how constraint names are shortened if required based on platform limitations.
+   */
+  public interface MaxLength {
+
+    /**
+     * Truncate or shorten the constraint name to support DB platform limitations.
+     * <p>
+     * There is a default implementation of this which is used if an implementation is
+     * not specified.
+     * </p>
+     */
+    String maxLength(String constraintName, int count);
+  }
+
+  protected String pkPrefix = "pk_";
+  protected String pkSuffix = "";
+
+  protected String fkPrefix = "fk_";
+  protected String fkMiddle = "_";
+  protected String fkSuffix = "";
+
+  protected String fkIndexPrefix = "ix_";
+  protected String fkIndexMiddle = "_";
+  protected String fkIndexSuffix = "";
+
+  protected String indexPrefix = "ix_";
+  protected String indexMiddle = "_";
+  protected String indexSuffix = "";
+
+  protected String uqPrefix = "uq_";
+  protected String uqSuffix = "";
+
+  protected String ckPrefix = "ck_";
+  protected String ckSuffix = "";
+
+  protected MaxLength maxLength;
+
+  protected DbConstraintNormalise normalise;
+
+  /**
+   * Construct using default of lower case for both table and column names.
+   */
+  public DbConstraintNaming() {
+    this(true, true);
+  }
+
+  /**
+   * Construct specifying if lower case should be used (for both table and column names).
+   */
+  public DbConstraintNaming(boolean lowerCase) {
+    this(lowerCase, lowerCase);
+  }
+
+  /**
+   * Construct specifying if lower case should be used for both table and column names.
+   */
+  public DbConstraintNaming(boolean lowerCaseTableNames, boolean lowerCaseColumnNames) {
+    this.normalise = new DbConstraintNormalise(lowerCaseTableNames, lowerCaseColumnNames);
+  }
+
+  /**
+   * Return the MaxLength implementation used to truncate/shorten db constraint names as necessary.
+   */
+  public MaxLength getMaxLength() {
+    return maxLength;
+  }
+
+  /**
+   * Set the MaxLength implementation used to truncate/shorten db constraint names as necessary.
+   */
+  public void setMaxLength(MaxLength maxLength) {
+    this.maxLength = maxLength;
+  }
+
+  /**
+   * Return the primary key constraint name.
+   */
+  public String primaryKeyName(String tableName) {
+
+    return pkPrefix + normaliseTable(tableName) + pkSuffix;
+  }
+
+  /**
+   * Return the foreign key constraint name given a single column foreign key.
+   */
+  public String foreignKeyConstraintName(String tableName, String columnName) {
+    return fkPrefix + normaliseTable(tableName) + fkMiddle + normaliseColumn(columnName) + fkSuffix;
+  }
+
+  /**
+   * Return the index name associated with a foreign key constraint given multiple columns.
+   */
+  public String foreignKeyIndexName(String tableName, String[] columns) {
+
+    String colPart = joinColumnNames(columns);
+    return fkIndexPrefix + normaliseTable(tableName) + fkIndexMiddle + colPart + fkIndexSuffix;
+  }
+
+  /**
+   * Return the index name associated with a foreign key constraint given a single column foreign key.
+   */
+  public String foreignKeyIndexName(String tableName, String column) {
+
+    String colPart = normaliseTable(column);
+    return fkIndexPrefix + normaliseTable(tableName) + fkIndexMiddle + colPart + fkIndexSuffix;
+  }
+
+  /**
+   * Return the index name for a general index (not associated with a foreign key).
+   */
+  public String indexName(String tableName, String column) {
+
+    String colPart = normaliseTable(column);
+    return indexPrefix + normaliseTable(tableName) + indexMiddle + colPart + indexSuffix;
+  }
+
+  /**
+   * Return the index name for a general index (not associated with a foreign key).
+   */
+  public String indexName(String tableName, String[] columns) {
+
+    String colPart = joinColumnNames(columns);
+    return indexPrefix + normaliseTable(tableName) + indexMiddle + colPart + indexSuffix;
+  }
+
+  /**
+   * Join the column names together with underscores.
+   */
+  protected String joinColumnNames(String[] columns) {
+
+    if (columns.length == 1) {
+      return normaliseColumn(columns[0]);
+    }
+    StringBuilder sb = new StringBuilder();
+    for (int i = 0; i < columns.length; i++) {
+      if (i > 0) {
+        sb.append("_");
+      }
+      sb.append(normaliseColumn(columns[i]));
+    }
+    return sb.toString();
+  }
+
+  /**
+   * Return the unique constraint name.
+   */
+  public String uniqueConstraintName(String tableName, String columnName) {
+
+    return uqPrefix + normaliseTable(tableName) + "_" + normaliseColumn(columnName) + uqSuffix;
+  }
+
+  /**
+   * Return the unique constraint name.
+   */
+  public String uniqueConstraintName(String tableName, String[] columns) {
+
+    String colPart = joinColumnNames(columns);
+    return uqPrefix + normaliseTable(tableName) + "_" + colPart + uqSuffix;
+  }
+
+  /**
+   * Return the check constraint name.
+   */
+  public String checkConstraintName(String tableName, String columnName) {
+
+    return ckPrefix + normaliseTable(tableName) + "_" + normaliseColumn(columnName) + ckSuffix;
+  }
+
+  /**
+   * Normalise the table name by trimming catalog and schema and removing any
+   * quoted identifier characters (",',[,] etc).
+   */
+  public String normaliseTable(String tableName) {
+    return normalise.normaliseTable(tableName);
+  }
+
+  /**
+   * Normalise the column name by removing any quoted identifier characters (",',[,] etc).
+   */
+  public String normaliseColumn(String tableName) {
+    return normalise.normaliseColumn(tableName);
+  }
+
+  /**
+   * Lower case the table name checking for quoted identifiers.
+   */
+  public String lowerTableName(String tableName) {
+    return normalise.lowerTableName(tableName);
+  }
+
+  /**
+   * Lower case the column name checking for quoted identifiers.
+   */
+  public String lowerColumnName(String name) {
+    return normalise.lowerColumnName(name);
+  }
+}

src/main/java/com/avaje/ebean/config/DbConstraintNormalise.java

@@ -0,0 +1,105 @@
+package com.avaje.ebean.config;
+
+/**
+ * Used to normalise table and column names which means stripping out
+ * quoted identifier characters and any catalog or schema prefix.
+ */
+public class DbConstraintNormalise {
+
+  protected final String[] quotedIdentifiers;
+
+  protected final boolean lowerCaseTables;
+
+  protected final boolean lowerCaseColumns;
+
+  public DbConstraintNormalise() {
+    this(true, true);
+  }
+
+  public DbConstraintNormalise(boolean lowerCaseTables, boolean lowerCaseColumns) {
+    this.lowerCaseTables = lowerCaseTables;
+    this.lowerCaseColumns = lowerCaseColumns;
+    this.quotedIdentifiers = new String[]{"\"", "'", "[", "]", "`"};
+  }
+
+  /**
+   * Normalise the table name by trimming catalog and schema and removing any
+   * quoted identifier characters (",',[,] etc).
+   */
+  public String normaliseTable(String tableName) {
+
+    tableName = trimQuotes(tableName);
+    int lastPeriod = tableName.lastIndexOf('.');
+    if (lastPeriod > -1) {
+      // trim off catalog and schema prefix
+      tableName = tableName.substring(lastPeriod + 1);
+    }
+    if (lowerCaseTables) {
+      tableName = tableName.toLowerCase();
+    }
+    return tableName;
+  }
+
+  /**
+   * Normalise the column name by removing any quoted identifier characters.
+   */
+  public String normaliseColumn(String columnName) {
+
+    columnName = trimQuotes(columnName);
+    if (lowerCaseColumns) {
+      columnName = columnName.toLowerCase();
+    }
+    return columnName;
+  }
+
+  /**
+   * Lower case the table name checking for quoted identifiers.
+   */
+  public String lowerTableName(String tableName) {
+    if (lowerCaseTables && notQuoted(tableName)) {
+      return tableName.toLowerCase();
+    }
+    return tableName;
+  }
+
+  /**
+   * Lower case the column name checking for quoted identifiers.
+   */
+  public String lowerColumnName(String name) {
+    if (lowerCaseColumns && notQuoted(name)) {
+      return name.toLowerCase();
+    }
+    return name;
+  }
+
+  /**
+   * Trim off the platform quoted identifier quotes like [ ' and ".
+   */
+  public boolean notQuoted(String tableName) {
+
+    // remove quoted identifier characters
+    for (int i = 0; i < quotedIdentifiers.length; i++) {
+      if (tableName.contains(quotedIdentifiers[i])) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  /**
+   * Trim off the platform quoted identifier quotes like [ ' and ".
+   */
+  public String trimQuotes(String tableName) {
+
+    if (tableName == null) {
+      return "";
+    }
+    // remove quoted identifier characters
+    for (int i = 0; i < quotedIdentifiers.length; i++) {
+      tableName = tableName.replace(quotedIdentifiers[i], "");
+    }
+    return tableName;
+  }
+
+
+}

src/main/java/com/avaje/ebean/config/DbMigrationConfig.java

@@ -0,0 +1,393 @@
+package com.avaje.ebean.config;
+
+import com.avaje.ebean.EbeanServer;
+import com.avaje.ebean.config.dbplatform.DbPlatformName;
+import com.avaje.ebean.dbmigration.DbMigration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Configuration for the DB migration processing.
+ */
+public class DbMigrationConfig {
+
+  protected static final Logger logger = LoggerFactory.getLogger(DbMigrationConfig.class);
+
+  /**
+   * The database platform to generate migration DDL for.
+   */
+  protected DbPlatformName platform;
+
+  /**
+   * Set to true if the DB migration should be generated on server start.
+   */
+  protected boolean generate;
+
+  /**
+   * Set to true to suppress the output of the rollback script.
+   */
+  protected boolean suppressRollback;
+
+  /**
+   * The migration version name (typically FlywayDb compatible).
+   * <p>
+   * Example: 1.1.1_2
+   * <p>
+   * The version is expected to be the combination of the current pom version plus
+   * a 'feature' id. The combined version must be unique and ordered to work with
+   * FlywayDb so each developer sets a unique version so that the migration script
+   * generated is unique (typically just prior to being submitted as a merge request).
+   */
+  protected String version;
+
+  /**
+   * Description text that can be appended to the version to become the ddl script file name.
+   * <p>
+   * So if the name is "a foo table" then the ddl script file could be:
+   * "1.1.1_2__a-foo-table.sql"
+   * <p>
+   * When the DB migration relates to a git feature (merge request) then this description text
+   * is a short description of the feature.
+   */
+  protected String name;
+
+  /**
+   * Resource path for the migration xml and sql.
+   */
+  protected String migrationPath = "dbmigration";
+
+  /**
+   * Subdirectory the model xml files go into.
+   */
+  protected String modelPath = "model";
+
+  /**
+   * Subdirectory the drop ddl scripts go into.
+   */
+  protected String dropPath = "drop";
+
+  /**
+   * Subdirectory the rollback ddl scripts go into.
+   */
+  protected String rollbackPath = "rollback";
+
+  /**
+   * Apply script suffix.
+   */
+  protected String applySuffix = ".sql";
+
+  /**
+   * Default drop script suffix to ddl so that it isn't picked up by FlywayDb.
+   */
+  protected String dropSuffix = ".drop.ddl";
+
+  /**
+   * Default rollback script suffix to ddl so that it isn't picked up by FlywayDb.
+   */
+  protected String rollbackSuffix = ".rollback.ddl";
+
+  protected String modelSuffix = ".model.xml";
+
+  /**
+   * Return the DB platform to generate migration DDL for.
+   *
+   * We typically need to explicitly specify this as migration can often be generated
+   * when running against H2.
+   */
+  public DbPlatformName getPlatform() {
+    return platform;
+  }
+
+  /**
+   * Set the DB platform to generate migration DDL for.
+   */
+  public void setPlatform(DbPlatformName platform) {
+    this.platform = platform;
+  }
+
+  /**
+   * Return the resource path for db migrations.
+   */
+  public String getMigrationPath() {
+    return migrationPath;
+  }
+
+  /**
+   * Set the resource path for db migrations.
+   * <p>
+   * The default of "dbmigration" is reasonable in most cases. You may look to set this
+   * to be something like "dbmigration/myapp" where myapp gives it a unique resource path
+   * in the case there are multiple EbeanServer applications in the single classpath.
+   * </p>
+   */
+  public void setMigrationPath(String migrationPath) {
+    this.migrationPath = migrationPath;
+  }
+
+  /**
+   * Return the relative path for the model files (defaults to model).
+   */
+  public String getModelPath() {
+    return modelPath;
+  }
+
+  /**
+   * Set the relative path for the model files.
+   */
+  public void setModelPath(String modelPath) {
+    this.modelPath = modelPath;
+  }
+
+  /**
+   * Return the relative path for the drop ddl scripts (defaults to drop).
+   */
+  public String getDropPath() {
+    return dropPath;
+  }
+
+  /**
+   * Set the relative path for the drop ddl scripts (defaults to drop).
+   */
+  public void setDropPath(String dropPath) {
+    this.dropPath = dropPath;
+  }
+
+  /**
+   * Return the relative path for the rollback ddl scripts (defaults to rollback).
+   */
+  public String getRollbackPath() {
+    return rollbackPath;
+  }
+
+  /**
+   * Set the relative path for the rollback ddl scripts (defaults to rollback).
+   */
+  public void setRollbackPath(String rollbackPath) {
+    this.rollbackPath = rollbackPath;
+  }
+
+  /**
+   * Return the model suffix (defaults to model.xml)
+   */
+  public String getModelSuffix() {
+    return modelSuffix;
+  }
+
+  /**
+   * Set the model suffix.
+   */
+  public void setModelSuffix(String modelSuffix) {
+    this.modelSuffix = modelSuffix;
+  }
+
+  /**
+   * Return true if the rollback script should not be output.
+   */
+  public boolean isSuppressRollback() {
+    return suppressRollback;
+  }
+
+  /**
+   * Set to true to suppress the output of the rollback script.
+   */
+  public void setSuppressRollback(boolean suppressRollback) {
+    this.suppressRollback = suppressRollback;
+  }
+
+  /**
+   * Return the apply script suffix (defaults to sql).
+   */
+  public String getApplySuffix() {
+    return applySuffix;
+  }
+
+  /**
+   * Set the apply script suffix (defaults to sql).
+   */
+  public void setApplySuffix(String applySuffix) {
+    this.applySuffix = applySuffix;
+  }
+
+  /**
+   * Return the drop script suffix (defaults to ddl so that it isn't picked up by FlywayDb).
+   */
+  public String getDropSuffix() {
+    return dropSuffix;
+  }
+
+  /**
+   * Set the drop script suffix (defaults to ddl so that it isn't picked up by FlywayDb).
+   */
+  public void setDropSuffix(String dropSuffix) {
+    this.dropSuffix = dropSuffix;
+  }
+
+  /**
+   * Return the rollback script suffix (defaults to ddl so that it isn't picked up by FlywayDb).
+   */
+  public String getRollbackSuffix() {
+    return rollbackSuffix;
+  }
+
+  /**
+   * Set the rollback script suffix (defaults to ddl so that it isn't picked up by FlywayDb).
+   */
+  public void setRollbackSuffix(String rollbackSuffix) {
+    this.rollbackSuffix = rollbackSuffix;
+  }
+
+  /**
+   * Set the migration version.
+   * <p>
+   * Note that version set via System property or environment variable <code>ddl.migration.version</code> takes precedence.
+   */
+  public void setVersion(String version) {
+    this.version = version;
+  }
+
+  /**
+   * Set the migration name.
+   * <p>
+   * Note that name set via System property or environment variable <code>ddl.migration.name</code> takes precedence.
+   */
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  /**
+   * Set the model, rollback and drop paths to be empty such that all the migration files are generated
+   * into a single directory.
+   */
+  public void singleDirectory() {
+    this.dropPath = "";
+    this.rollbackPath = "";
+    this.modelPath = "";
+  }
+
+  /**
+   * Load the settings from the PropertiesWrapper.
+   */
+  public void loadSettings(PropertiesWrapper properties) {
+
+    migrationPath = properties.get("migration.migrationPath", migrationPath);
+    if (properties.getBoolean("migration.singleDirectory", false)) {
+      singleDirectory();
+    } else {
+      modelPath = properties.get("migration.modelPath", modelPath);
+      rollbackPath = properties.get("migration.rollbackPath", rollbackPath);
+      dropPath = properties.get("migration.dropPath", dropPath);
+    }
+    applySuffix = properties.get("migration.applySuffix", applySuffix);
+    dropSuffix = properties.get("migration.dropSuffix", dropSuffix);
+    rollbackSuffix = properties.get("migration.rollbackSuffix", rollbackSuffix);
+    modelSuffix = properties.get("migration.modelSuffix", modelSuffix);
+
+    platform = properties.getEnum(DbPlatformName.class, "migration.platform", platform);
+    suppressRollback = properties.getBoolean("migration.suppressRollback", suppressRollback);
+
+    generate = properties.getBoolean("migration.generate", generate);
+    version = properties.get("migration.version", version);
+    name = properties.get("migration.name", name);
+  }
+
+  /**
+   * Return true if the migration should be generated.
+   * <p>
+   * It is expected that when an environment variable <code>ddl.migration.enabled</code>
+   * is set to <code>true</code> then the DB migration will generate the migration DDL.
+   * </p>
+   */
+  public boolean isGenerateOnStart() {
+
+    // environment properties take precedence
+    String envGenerate = readEnvironment("ddl.migration.generate");
+    if (envGenerate != null) {
+      return "true".equalsIgnoreCase(envGenerate.trim());
+    }
+    return generate;
+  }
+
+
+  /**
+   * Called by EbeanServer on start.
+   *
+   * <p>
+   * If enabled this generates the migration xml and DDL scripts.
+   * </p>
+   */
+  public void generateOnStart(EbeanServer server) {
+
+    if (isGenerateOnStart()) {
+      if (platform == null) {
+        logger.warn("No platform set for migration DDL generation");
+      } else {
+        // generate the migration xml and platform specific DDL
+        DbMigration migration = new DbMigration(server);
+        migration.setPlatform(platform);
+        try {
+          migration.generateMigration();
+        } catch (Exception e) {
+          throw new RuntimeException("Error generating DB migration", e);
+        }
+      }
+    }
+  }
+
+  /**
+   * Return the migration version (typically FlywayDb compatible).
+   * <p>
+   * Example: 1.1.1_2
+   * <p>
+   * The version is expected to be the combination of the current pom version plus
+   * a 'feature' id. The combined version must be unique and ordered to work with
+   * FlywayDb so each developer sets a unique version so that the migration script
+   * generated is unique (typically just prior to being submitted as a merge request).
+   */
+  public String getVersion() {
+    String envVersion = readEnvironment("ddl.migration.version");
+    if (!isEmpty(envVersion)) {
+      return envVersion.trim();
+    }
+    return version;
+  }
+
+  /**
+   * Return the migration name which is short description text that can be appended to
+   * the migration version to become the ddl script file name.
+   * <p>
+   * So if the name is "a foo table" then the ddl script file could be:
+   * "1.1.1_2__a-foo-table.sql"
+   * </p>
+   * <p>
+   * When the DB migration relates to a git feature (merge request) then this description text
+   * is a short description of the feature.
+   * </p>
+   */
+  public String getName() {
+    String envName = readEnvironment("ddl.migration.name");
+    if (!isEmpty(envName)) {
+      return envName.trim();
+    }
+    return name;
+  }
+
+  /**
+   * Return the system or environment property.
+   */
+  protected String readEnvironment(String key) {
+
+    String val = System.getProperty(key);
+    if (val == null) {
+      val = System.getenv(key);
+    }
+    return val;
+  }
+
+  /**
+   * Return true if the string is null or empty.
+   */
+  protected boolean isEmpty(String val) {
+    return val == null || val.trim().isEmpty();
+  }
+
+}

src/main/java/com/avaje/ebean/config/JsonConfig.java

@@ -26,4 +26,22 @@ public abstract class JsonConfig {
     ISO8601
   }
 
+
+  public enum Include {
+
+    /**
+     * Include all values including null and empty collections.
+     */
+    ALL,
+
+    /**
+     * Exclude null values (include empty collections).
+     */
+    NON_NULL,
+
+    /**
+     * Exclude null values and empty collections.
+     */
+    NON_EMPTY
+  }
 }

src/main/java/com/avaje/ebean/config/NamingConvention.java

@@ -82,8 +82,7 @@ public interface NamingConvention {
   String getPropertyFromColumn(Class<?> beanClass, String dbColumnName);
 
   /**
-   * Return the sequence name given the table name (for DB's that use
-   * sequences).
+   * Return the sequence name given the table name (for DB's that use sequences).
    * <p>
    * Typically you might append "_seq" to the table name as an example.
    * </p>
@@ -99,14 +98,14 @@ public interface NamingConvention {
    * Return true if a prefix should be used building a foreign key name.
    * <p>
    * This by default is true and this works well when the primary key column
-   * names are simply "ID". In this case a prefix (such as "ORDER" and
-   * "CUSTOMER" etc) is added to the foreign key column producing "ORDER_ID" and
-   * "CUSTOMER_ID".
+   * names are simply "id". In this case a prefix (such as "order" and
+   * "customer" etc) is added to the foreign key column producing "order_id" and
+   * "customer_id".
    * </p>
    * <p>
    * This should return false when your primary key columns are the same as the
    * foreign key columns. For example, when the primary key columns are
-   * "ORDER_ID", "CUST_ID" etc ... and they are the same as the foreign key
+   * "order_id", "cust_id" etc ... and they are the same as the foreign key
    * column names.
    * </p>
    */

src/main/java/com/avaje/ebean/config/PersistBatch.java

@@ -36,7 +36,7 @@ public enum PersistBatch {
   INHERIT(false);
 
 
-  boolean forInsert;
+  final boolean forInsert;
 
   PersistBatch(boolean forInsert) {
     this.forInsert = forInsert;

src/main/java/com/avaje/ebean/config/PropertiesWrapper.java

@@ -141,8 +141,8 @@ public class PropertiesWrapper {
    * Return a Enum property value.
    */
   public <T extends Enum<T>> T getEnum(Class<T> enumType, String key, T defaultValue) {
-    String level = get(key, defaultValue.name());
-    return Enum.valueOf(enumType, level.toUpperCase());
+    String level = get(key, null);
+    return (level == null) ? defaultValue : Enum.valueOf(enumType, level.toUpperCase());
   }
 
 }

src/main/java/com/avaje/ebean/config/PropertyExpression.java

@@ -27,12 +27,12 @@ final class PropertyExpression {
   /**
    * Used to detect the start of an expression.
    */
-  private static String START = "${";
+  private static final String START = "${";
 
   /**
    * Used to detect the end of an expression.
    */
-  private static String END = "}";
+  private static final String END = "}";
 
   /**
    * Specify the PropertyHolder.
@@ -144,13 +144,7 @@ final class PropertyExpression {
   }
 
   private static boolean isJndiExpression(String exp) {
-    if (exp.startsWith("JNDI:")) {
-      return true;
-    }
-    if (exp.startsWith("jndi:")) {
-      return true;
-    }
-    return false;
+    return exp.startsWith("JNDI:") || exp.startsWith("jndi:");
   }
 
   /**

src/main/java/com/avaje/ebean/config/PropertyMap.java

@@ -16,7 +16,15 @@ public final class PropertyMap implements Serializable {
 
   private static final long serialVersionUID = 1L;
 
-  private LinkedHashMap<String, String> map = new LinkedHashMap<String, String>();
+  private final LinkedHashMap<String, String> map = new LinkedHashMap<String, String>();
+
+  /**
+   * Return properties loaded from test-ebean.properties.
+   */
+  public static Properties testProperties() {
+    PropertyMap propertyMap = PropertyMapLoader.loadTestProperties();
+    return (propertyMap == null) ? new Properties() : propertyMap.asProperties();
+  }
 
   public static Properties defaultProperties() {
     PropertyMap propertyMap = PropertyMapLoader.loadGlobalProperties();

src/main/java/com/avaje/ebean/config/PropertyMapLoader.java

@@ -14,17 +14,34 @@ final class PropertyMapLoader {
 
   private static final Logger logger = LoggerFactory.getLogger(PropertyMapLoader.class);
 
+  /**
+   * Load the <code>test-ebean.properties</code>.
+   */
+  public static PropertyMap loadTestProperties() {
+    return load(null, "test-ebean.properties");
+  }
+
+  /**
+   * Load the ebean.properties (and test-ebean.properties if present).
+   */
   public static PropertyMap loadGlobalProperties() {
 
+    boolean loadTestProperties = false;
     String fileName = System.getenv("EBEAN_PROPS_FILE");
     if (fileName == null) {
       fileName = System.getProperty("ebean.props.file");
       if (fileName == null) {
+        loadTestProperties = true;
         fileName = "ebean.properties";
       }
     }
 
-    return load(null, fileName);
+    PropertyMap map = load(null, fileName);
+    if (loadTestProperties) {
+      // load test properties if present in classpath
+      map = load(map, "test-ebean.properties");
+    }
+    return map;
   }
 
   /**
@@ -39,7 +56,6 @@ final class PropertyMapLoader {
 
     InputStream is = findInputStream(fileName);
     if (is == null) {
-      logger.error(fileName + " not found");
       return p;
     } else {
       return load(p, is);
@@ -47,7 +63,7 @@ final class PropertyMapLoader {
   }
 
   /**
-   * Load the inputstream returning the property map.
+   * Load the InputStream returning the property map.
    * 
    * @param p
    *          an existing property map to load into.

src/main/java/com/avaje/ebean/config/PstmtDelegate.java

@@ -1,24 +0,0 @@
-package com.avaje.ebean.config;
-
-import java.sql.PreparedStatement;
-
-/**
- * Unwrap the PreparedStatement to get the specific underlying implementation.
- * <p>
- * This is used to handle specific JDBC driver issues. Typically this means
- * getting the OraclePreparedStatement to handle Oracle specific issues etc.
- * </p>
- * 
- * @author rbygrave
- */
-public interface PstmtDelegate {
-
-  /**
-   * Unwrap the PreparedStatement to get the specific underlying implementation.
-   * 
-   * @param pstmt
-   *          the PreparedStatement coming out of the connection pool
-   * @return the underlying PreparedStatement
-   */
-  PreparedStatement unwrap(PreparedStatement pstmt);
-}

src/main/java/com/avaje/ebean/config/ServerConfig.java

@@ -7,9 +7,20 @@ import com.avaje.ebean.cache.ServerCacheFactory;
 import com.avaje.ebean.cache.ServerCacheManager;
 import com.avaje.ebean.config.dbplatform.DatabasePlatform;
 import com.avaje.ebean.config.dbplatform.DbEncrypt;
-import com.avaje.ebean.event.*;
+import com.avaje.ebean.event.BeanFindController;
+import com.avaje.ebean.event.BeanPersistController;
+import com.avaje.ebean.event.BeanPersistListener;
+import com.avaje.ebean.event.BeanPostLoad;
+import com.avaje.ebean.event.BeanQueryAdapter;
+import com.avaje.ebean.event.BulkTableEventListener;
+import com.avaje.ebean.event.ServerConfigStartup;
+import com.avaje.ebean.event.TransactionEventListener;
+import com.avaje.ebean.event.changelog.ChangeLogListener;
+import com.avaje.ebean.event.changelog.ChangeLogPrepare;
+import com.avaje.ebean.event.changelog.ChangeLogRegister;
+import com.avaje.ebean.event.readaudit.ReadAuditLogger;
+import com.avaje.ebean.event.readaudit.ReadAuditPrepare;
 import com.avaje.ebean.meta.MetaInfoManager;
-import com.avaje.ebean.util.ClassUtil;
 import com.fasterxml.jackson.core.JsonFactory;
 
 import javax.sql.DataSource;
@@ -70,6 +81,11 @@ public class ServerConfig {
 
   private ContainerConfig containerConfig;
 
+  /**
+   * The underlying properties that were used during configuration.
+   */
+  private Properties properties;
+
   /**
    * The resource directory.
    */
@@ -113,16 +129,28 @@ public class ServerConfig {
    */
   private String classPathReaderClassName;
 
-  /** 
-   * Config controlling the autofetch behaviour.
+  /**
+   * This is used to populate @WhoCreated, @WhoModified and
+   * support other audit features (who executed a query etc).
    */
-  private AutofetchConfig autofetchConfig = new AutofetchConfig();
+  private CurrentUserProvider currentUserProvider;
+
+  /** 
+   * Config controlling the AutoTune behaviour.
+   */
+  private AutoTuneConfig autoTuneConfig = new AutoTuneConfig();
 
   /**
    * The JSON format used for DateTime types. Default to millis.
    */
   private JsonConfig.DateTime jsonDateTime = JsonConfig.DateTime.MILLIS;
 
+  /**
+   * For writing JSON specify if null values or empty collections should be exluded.
+   * By default all values are included.
+   */
+  private JsonConfig.Include jsonInclude = JsonConfig.Include.ALL;
+
   /** 
    * The database platform name. Used to imply a DatabasePlatform to use.  
    */
@@ -138,6 +166,24 @@ public class ServerConfig {
    */
   private int databaseSequenceBatchSize = 20;
 
+  /**
+   * Suffix appended to the base table to derive the view that contains the union
+   * of the base table and the history table in order to support asOf queries.
+   */
+  private String asOfViewSuffix = "_with_history";
+
+  /**
+   * Column used to support history and 'As of' queries. This column is a timestamp range
+   * or equivalent.
+   */
+  private String asOfSysPeriod = "sys_period";
+
+  /**
+   * Suffix appended to the base table to derive the view that contains the union
+   * of the base table and the history table in order to support asOf queries.
+   */
+  private String historyTableSuffix = "_history";
+
   /**
    * Use for transaction scoped batch mode.
    */
@@ -166,6 +212,12 @@ public class ServerConfig {
 
   private boolean ddlRun;
 
+  private boolean ddlCreateOnly;
+
+  private String ddlInitSql;
+
+  private String ddlSeedSql;
+
   private boolean useJtaTransactionManager;
 
   /**
@@ -174,11 +226,6 @@ public class ServerConfig {
   private ExternalTransactionManager externalTransactionManager;
 
   /**
-   * Used to unwrap PreparedStatements to perform JDBC Driver specific functions
-   */
-  private PstmtDelegate pstmtDelegate;
-
-  /** 
    * The data source (if programmatically provided). 
    */
   private DataSource dataSource;
@@ -188,13 +235,28 @@ public class ServerConfig {
    */
   private DataSourceConfig dataSourceConfig = new DataSourceConfig();
 
+  /**
+   * The db migration config (migration resource path etc).
+   */
+  private DbMigrationConfig migrationConfig = new DbMigrationConfig();
+
+  /**
+   * The ClassLoadConfig used to detect Joda, Java8, Jackson etc and create plugin instances given a className.
+   */
+  private ClassLoadConfig classLoadConfig = new ClassLoadConfig();
+
   /**
    * Set to true if the DataSource uses autoCommit.
    * <p>
    * Indicates that Ebean should use autoCommit friendly Transactions and TransactionManager.
    */
   private boolean autoCommitMode;
-  
+
+  /**
+   * Set to true if transaction begin should be started with explicit statement.
+   */
+  private boolean explicitTransactionBeginMode;
+
   /** 
    * The data source JNDI name if using a JNDI DataSource. 
    */
@@ -215,30 +277,56 @@ public class ServerConfig {
    */
   private NamingConvention namingConvention = new UnderscoreNamingConvention();
 
+  /**
+   * Naming convention used in DDL generation for primary keys, foreign keys etc.
+   */
+  private DbConstraintNaming constraintNaming = new DbConstraintNaming();
+
   /** 
    * Behaviour of update to include on the change properties. 
    */
   private boolean updateChangesOnly = true;
-  
+
+  /**
+   * Behaviour of updates in JDBC batch to by default include all properties.
+   */
+  private boolean updateAllPropertiesInBatch = true;
+
   /**
    * Default behaviour for updates when cascade save on a O2M or M2M to delete any missing children.
    */
   private boolean updatesDeleteMissingChildren = true;
   
   /**
-   * Setting to indicate if UUID should be stored as binary(16) or varchar(40).
+   * Setting to indicate if UUID should be stored as binary(16) or varchar(40) or native DB type (for H2 and Postgres).
    */
-  private boolean uuidStoreAsBinary;
+  private DbUuid dbUuid = DbUuid.AUTO;
 
 
   private List<BeanFindController> findControllers = new ArrayList<BeanFindController>();
   private List<BeanPersistController> persistControllers = new ArrayList<BeanPersistController>();
+  private List<BeanPostLoad> postLoaders = new ArrayList<BeanPostLoad>();
   private List<BeanPersistListener> persistListeners = new ArrayList<BeanPersistListener>();
   private List<BeanQueryAdapter> queryAdapters = new ArrayList<BeanQueryAdapter>();
   private List<BulkTableEventListener> bulkTableEventListeners = new ArrayList<BulkTableEventListener>();
   private List<ServerConfigStartup> configStartupListeners = new ArrayList<ServerConfigStartup>();
   private List<TransactionEventListener> transactionEventListeners = new ArrayList<TransactionEventListener>();
 
+  /**
+   * By default inserts are included in the change log.
+   */
+  private boolean changeLogIncludeInserts = true;
+
+  private ChangeLogPrepare changeLogPrepare;
+
+  private ChangeLogListener changeLogListener;
+
+  private ChangeLogRegister changeLogRegister;
+
+  private ReadAuditLogger readAuditLogger;
+
+  private ReadAuditPrepare readAuditPrepare;
+
   private EncryptKeyManager encryptKeyManager;
 
   private EncryptDeployManager encryptDeployManager;
@@ -294,6 +382,11 @@ public class ServerConfig {
   private int queryCacheMaxTimeToLive = 60*60*6;
   private Object objectMapper;
 
+  /**
+   * Set to true if you want eq("someProperty", null) to generate 1=1 rather than "is null" sql expression.
+   */
+  private boolean expressionEqualsWithNullAsNoop;
+
   /**
    * Construct a Server Configuration for programmatically creating an EbeanServer.
    */
@@ -304,7 +397,7 @@ public class ServerConfig {
   /**
    * Return the Jackson JsonFactory to use.
    * <p>
-   * If not set a default implmentation will be used.
+   * If not set a default implementation will be used.
    */
   public JsonFactory getJsonFactory() {
     return jsonFactory;
@@ -313,7 +406,7 @@ public class ServerConfig {
   /**
    * Set the Jackson JsonFactory to use.
    * <p>
-   * If not set a default implmentation will be used.
+   * If not set a default implementation will be used.
    */
   public void setJsonFactory(JsonFactory jsonFactory) {
     this.jsonFactory = jsonFactory;
@@ -333,6 +426,23 @@ public class ServerConfig {
     this.jsonDateTime = jsonDateTime;
   }
 
+  /**
+   * Return the JSON include mode used when writing JSON.
+   */
+  public JsonConfig.Include getJsonInclude() {
+    return jsonInclude;
+  }
+
+  /**
+   * Set the JSON include mode used when writing JSON.
+   * <p>
+   * Set to NON_NULL or NON_EMPTY to suppress nulls or null & empty collections respectively.
+   * </p>
+   */
+  public void setJsonInclude(JsonConfig.Include jsonInclude) {
+    this.jsonInclude = jsonInclude;
+  }
+
   /**
    * Return the name of the EbeanServer.
    */
@@ -411,6 +521,22 @@ public class ServerConfig {
     this.defaultServer = defaultServer;
   }
 
+  /**
+   * Return the CurrentUserProvider. This is used to populate @WhoCreated, @WhoModified and
+   * support other audit features (who executed a query etc).
+   */
+  public CurrentUserProvider getCurrentUserProvider() {
+    return currentUserProvider;
+  }
+
+  /**
+   * Set the CurrentUserProvider. This is used to populate @WhoCreated, @WhoModified and
+   * support other audit features (who executed a query etc).
+   */
+  public void setCurrentUserProvider(CurrentUserProvider currentUserProvider) {
+    this.currentUserProvider = currentUserProvider;
+  }
+
   /**
    * Return the PersistBatch mode to use by default at the transaction level.
    * <p>
@@ -438,7 +564,7 @@ public class ServerConfig {
   /**
    * Return the JDBC batch mode to use per save(), delete(), insert() or update() request.
    * <p>
-   * This makes sense when a save() or delete() etc cascades and executes multiple child statements. The best caase
+   * This makes sense when a save() or delete() cascades and executes multiple child statements. The best case
    * for this is when saving a master/parent bean this cascade inserts many detail/child beans.
    * </p>
    * <p>
@@ -556,6 +682,171 @@ public class ServerConfig {
     this.databaseSequenceBatchSize = databaseSequenceBatchSize;
   }
 
+  /**
+   * Return the ChangeLogPrepare.
+   * <p>
+   *   This is used to set user context information to the ChangeSet in the
+   *   foreground thread prior to the logging occurring in a background thread.
+   * </p>
+   */
+  public ChangeLogPrepare getChangeLogPrepare() {
+    return changeLogPrepare;
+  }
+
+  /**
+   * Set the ChangeLogPrepare.
+   * <p>
+   *   This is used to set user context information to the ChangeSet in the
+   *   foreground thread prior to the logging occurring in a background thread.
+   * </p>
+   */
+  public void setChangeLogPrepare(ChangeLogPrepare changeLogPrepare) {
+    this.changeLogPrepare = changeLogPrepare;
+  }
+
+  /**
+   * Return the ChangeLogListener which actually performs the logging of change sets
+   * in the background.
+   */
+  public ChangeLogListener getChangeLogListener() {
+    return changeLogListener;
+  }
+
+  /**
+   * Set the ChangeLogListener which actually performs the logging of change sets
+   * in the background.
+   */
+  public void setChangeLogListener(ChangeLogListener changeLogListener) {
+    this.changeLogListener = changeLogListener;
+  }
+
+  /**
+   * Return the ChangeLogRegister which controls which ChangeLogFilter is used for each
+   * bean type and in this way provide fine grained control over which persist requests
+   * are included in the change log.
+   */
+  public ChangeLogRegister getChangeLogRegister() {
+    return changeLogRegister;
+  }
+
+  /**
+   * Set the ChangeLogRegister which controls which ChangeLogFilter is used for each
+   * bean type and in this way provide fine grained control over which persist requests
+   * are included in the change log.
+   */
+  public void setChangeLogRegister(ChangeLogRegister changeLogRegister) {
+    this.changeLogRegister = changeLogRegister;
+  }
+
+  /**
+   * Return true if inserts should be included in the change log by default.
+   */
+  public boolean isChangeLogIncludeInserts() {
+    return changeLogIncludeInserts;
+  }
+
+  /**
+   * Set if inserts should be included in the change log by default.
+   */
+  public void setChangeLogIncludeInserts(boolean changeLogIncludeInserts) {
+    this.changeLogIncludeInserts = changeLogIncludeInserts;
+  }
+
+  /**
+   * Return the ReadAuditLogger to use.
+   */
+  public ReadAuditLogger getReadAuditLogger() {
+    return readAuditLogger;
+  }
+
+  /**
+   * Set the ReadAuditLogger to use. If not set the default implementation is used
+   * which logs the read events in JSON format to a standard named SLF4J logger
+   * (which can be configured in say logback to log to a separate log file).
+   */
+  public void setReadAuditLogger(ReadAuditLogger readAuditLogger) {
+    this.readAuditLogger = readAuditLogger;
+  }
+
+  /**
+   * Return the ReadAuditPrepare to use.
+   */
+  public ReadAuditPrepare getReadAuditPrepare() {
+    return readAuditPrepare;
+  }
+
+  /**
+   * Set the ReadAuditPrepare to use.
+   * <p>
+   * It is expected that an implementation is used that read user context information
+   * (user id, user ip address etc) and sets it on the ReadEvent bean before it is sent
+   * to the ReadAuditLogger.
+   * </p>
+   */
+  public void setReadAuditPrepare(ReadAuditPrepare readAuditPrepare) {
+    this.readAuditPrepare = readAuditPrepare;
+  }
+
+  /**
+   * Return the DB migration configuration.
+   */
+  public DbMigrationConfig getMigrationConfig() {
+    return migrationConfig;
+  }
+
+  /**
+   * Set the DB migration configuration.
+   */
+  public void setMigrationConfig(DbMigrationConfig migrationConfig) {
+    this.migrationConfig = migrationConfig;
+  }
+
+  /**
+   * Return the suffix appended to the base table to derive the view that contains the union
+   * of the base table and the history table in order to support asOf queries.
+   */
+  public String getAsOfViewSuffix() {
+    return asOfViewSuffix;
+  }
+
+  /**
+   * Set the suffix appended to the base table to derive the view that contains the union
+   * of the base table and the history table in order to support asOf queries.
+   */
+  public void setAsOfViewSuffix(String asOfViewSuffix) {
+    this.asOfViewSuffix = asOfViewSuffix;
+  }
+
+  /**
+   * Return the database column used to support history and 'As of' queries. This column is a timestamp range
+   * or equivalent.
+   */
+  public String getAsOfSysPeriod() {
+    return asOfSysPeriod;
+  }
+
+  /**
+   * Set the database column used to support history and 'As of' queries. This column is a timestamp range
+   * or equivalent.
+   */
+  public void setAsOfSysPeriod(String asOfSysPeriod) {
+    this.asOfSysPeriod = asOfSysPeriod;
+  }
+
+  /**
+   * Return the history table suffix (defaults to _history).
+   */
+  public String getHistoryTableSuffix() {
+    return historyTableSuffix;
+  }
+
+  /**
+   * Set the history table suffix.
+   */
+  public void setHistoryTableSuffix(String historyTableSuffix) {
+    this.historyTableSuffix = historyTableSuffix;
+  }
+
   /**
    * Return true if we are running in a JTA Transaction manager.
    */
@@ -861,35 +1152,31 @@ public class ServerConfig {
   }
 
   /**
-   * Return the configuration for the Autofetch feature.
+   * Return the constraint naming convention used in DDL generation.
    */
-  public AutofetchConfig getAutofetchConfig() {
-    return autofetchConfig;
+  public DbConstraintNaming getConstraintNaming() {
+    return constraintNaming;
   }
 
   /**
-   * Set the configuration for the Autofetch feature.
+   * Set the constraint naming convention used in DDL generation.
    */
-  public void setAutofetchConfig(AutofetchConfig autofetchConfig) {
-    this.autofetchConfig = autofetchConfig;
+  public void setConstraintNaming(DbConstraintNaming constraintNaming) {
+    this.constraintNaming = constraintNaming;
   }
 
   /**
-   * Return the PreparedStatementDelegate.
+   * Return the configuration for AutoTune.
    */
-  public PstmtDelegate getPstmtDelegate() {
-    return pstmtDelegate;
+  public AutoTuneConfig getAutoTuneConfig() {
+    return autoTuneConfig;
   }
 
   /**
-   * Set the PstmtDelegate which can be used to support JDBC driver specific
-   * features.
-   * <p>
-   * Typically this means Oracle JDBC driver specific workarounds.
-   * </p>
+   * Set the configuration for AutoTune.
    */
-  public void setPstmtDelegate(PstmtDelegate pstmtDelegate) {
-    this.pstmtDelegate = pstmtDelegate;
+  public void setAutoTuneConfig(AutoTuneConfig autoTuneConfig) {
+    this.autoTuneConfig = autoTuneConfig;
   }
 
   /**
@@ -955,6 +1242,28 @@ public class ServerConfig {
     this.autoCommitMode = autoCommitMode;
   }
 
+  /**
+   * Return true if transaction begin should be started with explicit statement.
+   */
+  public boolean isExplicitTransactionBeginMode() {
+    return explicitTransactionBeginMode;
+  }
+
+  /**
+   * Set to true if transaction begin should be started with explicit statement.
+   * <p>
+   * This works for H2 and Postgres but not for Oracle - only use this if you first name
+   * is Daryl or you have explicitly talked to Rob about this feature.
+   * </p>
+   * <p>
+   * This is generally not expected to be turned on but instead allow transactions to start
+   * implicitly which is generally the standard approach.
+   * </p>
+   */
+  public void setExplicitTransactionBeginMode(boolean explicitTransactionBeginMode) {
+    this.explicitTransactionBeginMode = explicitTransactionBeginMode;
+  }
+
   /**
    * Return a value used to represent TRUE in the database.
    * <p>
@@ -1174,19 +1483,18 @@ public class ServerConfig {
     this.dbEncrypt = dbEncrypt;
   }
 
-  
   /**
-   * Return true if UUID should be stored as binary(16) (as opposed to varchar(40)).
+   * Return the DB type used to store UUID.
    */
-  public boolean isUuidStoreAsBinary() {
-    return uuidStoreAsBinary;
+  public DbUuid getDbUuid() {
+    return dbUuid;
   }
 
   /**
-   * Set to true if UUID should be stored as binary(16) (as opposed to varchar(40)).
+   * Set the DB type used to store UUID.
    */
-  public void setUuidStoreAsBinary(boolean uuidStoreAsBinary) {
-    this.uuidStoreAsBinary = uuidStoreAsBinary;
+  public void setDbUuid(DbUuid dbUuid) {
+    this.dbUuid = dbUuid;
   }
 
   /**
@@ -1227,19 +1535,81 @@ public class ServerConfig {
   }
 
   /**
-   * Set to true to run the DDL generation on startup.
+   * Set to true to generate the "create all" DDL on startup.
+   *
+   * Typically we want this on when we are running tests locally (and often using H2)
+   * and we want to create the full DB schema from scratch to run tests.
    */
   public void setDdlGenerate(boolean ddlGenerate) {
     this.ddlGenerate = ddlGenerate;
   }
 
   /**
-   * Set to true to run the generated DDL on startup.
+   * Set to true to run the generated "create all DDL" on startup.
+   *
+   * Typically we want this on when we are running tests locally (and often using H2)
+   * and we want to create the full DB schema from scratch to run tests.
    */
   public void setDdlRun(boolean ddlRun) {
     this.ddlRun = ddlRun;
   }
 
+  /**
+   * Return true if the "drop all ddl" should be skipped.
+   *
+   * Typically we want to do this when using H2 (in memory) as our test database and the drop statements
+   * are not required so skipping the drop table statements etc makes it faster with less noise in the logs.
+   */
+  public boolean isDdlCreateOnly() {
+    return ddlCreateOnly;
+  }
+
+  /**
+   * Set to true if the "drop all ddl" should be skipped.
+   *
+   * Typically we want to do this when using H2 (in memory) as our test database and the drop statements
+   * are not required so skipping the drop table statements etc makes it faster with less noise in the logs.
+   */
+  public void setDdlCreateOnly(boolean ddlCreateOnly) {
+    this.ddlCreateOnly = ddlCreateOnly;
+  }
+
+  /**
+   * Return SQL script to execute after the "create all" DDL has been run.
+   * <p>
+   *   Typically this is a sql script that inserts test seed data when running tests.
+   *   Place a sql script in src/test/resources that inserts test seed data.
+   * </p>
+   */
+  public String getDdlSeedSql() {
+    return ddlSeedSql;
+  }
+
+  /**
+   * Set a SQL script to execute after the "create all" DDL has been run.
+   * <p>
+   *   Typically this is a sql script that inserts test seed data when running tests.
+   *   Place a sql script in src/test/resources that inserts test seed data.
+   * </p>
+   */
+  public void setDdlSeedSql(String ddlSeedSql) {
+    this.ddlSeedSql = ddlSeedSql;
+  }
+
+  /**
+   * Return a SQL script to execute before the "create all" DDL has been run.
+   */
+  public String getDdlInitSql() {
+    return ddlInitSql;
+  }
+
+  /**
+   * Set a SQL script to execute before the "create all" DDL has been run.
+   */
+  public void setDdlInitSql(String ddlInitSql) {
+    this.ddlInitSql = ddlInitSql;
+  }
+
   /**
    * Return true if the DDL should be generated.
    */
@@ -1426,7 +1796,26 @@ public class ServerConfig {
   public void setUpdateChangesOnly(boolean updateChangesOnly) {
     this.updateChangesOnly = updateChangesOnly;
   }
-    
+
+  /**
+   * Returns true if updates in JDBC batch default to include all properties by default.
+   */
+  public boolean isUpdateAllPropertiesInBatch() {
+    return updateAllPropertiesInBatch;
+  }
+
+  /**
+   * Set to false if by default updates in JDBC batch should not include all properties.
+   * <p>
+   *   This mode can be explicitly set per transaction.
+   * </p>
+   *
+   * @see com.avaje.ebean.Transaction#setUpdateAllLoadedProperties(boolean)
+   */
+  public void setUpdateAllPropertiesInBatch(boolean updateAllPropertiesInBatch) {
+    this.updateAllPropertiesInBatch = updateAllPropertiesInBatch;
+  }
+
   /**
    * Return true if updates by default delete missing children when cascading save to a OneToMany or
    * ManyToMany. When not set this defaults to true.
@@ -1541,14 +1930,45 @@ public class ServerConfig {
     persistControllers.add(beanPersistController);
   }
 
+  /**
+   * Register a BeanPostLoad instance.
+   * <p>
+   * Note alternatively you can use {@link #setPostLoaders(List)} to set
+   * all the BeanPostLoad instances.
+   * </p>
+   */
+  public void add(BeanPostLoad postLoad) {
+    postLoaders.add(postLoad);
+  }
+
+  /**
+   * Return the list of BeanFindController instances.
+   */
   public List<BeanFindController> getFindControllers() {
     return findControllers;
   }
 
+  /**
+   * Set the list of BeanFindController instances.
+   */
   public void setFindControllers(List<BeanFindController> findControllers) {
     this.findControllers = findControllers;
   }
 
+  /**
+   * Return the list of BeanPostLoader instances.
+   */
+  public List<BeanPostLoad> getPostLoaders() {
+    return postLoaders;
+  }
+
+  /**
+   * Set the list of BeanPostLoader instances.
+   */
+  public void setPostLoaders(List<BeanPostLoad> postLoaders) {
+    this.postLoaders = postLoaders;
+  }
+
   /**
    * Return the BeanPersistController instances.
    */
@@ -1682,6 +2102,22 @@ public class ServerConfig {
     this.persistenceContextScope = persistenceContextScope;
   }
 
+  /**
+   * Return the ClassLoadConfig which is used to detect Joda, Java8 types etc and also
+   * create new instances of plugins given a className.
+   */
+  public ClassLoadConfig getClassLoadConfig() {
+    return classLoadConfig;
+  }
+
+  /**
+   * Set the ClassLoadConfig which is used to detect Joda, Java8 types etc and also
+   * create new instances of plugins given a className.
+   */
+  public void setClassLoadConfig(ClassLoadConfig classLoadConfig) {
+    this.classLoadConfig = classLoadConfig;
+  }
+
   /**
    * Load settings from ebean.properties.
    */
@@ -1693,16 +2129,59 @@ public class ServerConfig {
    * Load the settings from the given properties
    */
   public void loadFromProperties(Properties properties) {
+    // keep the properties used for configuration so that these are available for plugins
+    this.properties = properties;
     PropertiesWrapper p = new PropertiesWrapper("ebean", name, properties);
     loadSettings(p);
   }
 
+  /**
+   * Load settings from test-ebean.properties and do nothing if the properties is not found.
+   * <p>
+   * This is typically used when test-ebean.properties is put into the test class path and used
+   * to configure Ebean for running tests.
+   * </p>
+   */
+  public void loadTestProperties() {
+    Properties properties = PropertyMap.testProperties();
+    if (!properties.isEmpty()) {
+      PropertiesWrapper p = new PropertiesWrapper("ebean", name, properties);
+      loadSettings(p);
+    }
+  }
 
+  /**
+   * Return the properties that we used for configuration and were set via a call to loadFromProperties().
+   */
+  public Properties getProperties() {
+    return properties;
+  }
+
+  /**
+   * Return the instance to use (can be null) for the given plugin.
+   *
+   * @param properties the properties
+   * @param pluginType the type of plugin
+   * @param key        properties key
+   * @param instance   existing instance
+   */
   @SuppressWarnings("unchecked")
-  private <T> T createInstance(PropertiesWrapper p, Class<T> pluginType, String key) {
+  protected  <T> T createInstance(PropertiesWrapper properties, Class<T> pluginType, String key, T instance) {
 
-    String classname = p.get(key, null);
-    return classname == null ? null : (T) ClassUtil.newInstance(classname);
+    if (instance != null) {
+      return instance;
+    }
+    String classname = properties.get(key, null);
+    return createInstance(pluginType, classname);
+  }
+
+  /**
+   * Return the instance to use (can be null) for the given plugin.
+   * @param pluginType the type of plugin
+   * @param classname the implementation class as per properties
+   */
+  protected <T> T createInstance(Class<T> pluginType, String classname) {
+    return classname == null ? null : (T) classLoadConfig.newInstance(classname);
   }
 
   /**
@@ -1719,8 +2198,8 @@ public class ServerConfig {
   /**
    * This is broken out for the same reason as above - preserve existing behaviour but let it be overridden.
    */
-  protected void loadAutofetchSettings(PropertiesWrapper p) {
-    autofetchConfig.loadSettings(p);
+  protected void loadAutoTuneSettings(PropertiesWrapper p) {
+    autoTuneConfig.loadSettings(p);
   }
 
   /**
@@ -1728,31 +2207,35 @@ public class ServerConfig {
    */
   protected void loadSettings(PropertiesWrapper p) {
 
+    migrationConfig.loadSettings(p);
+
     namingConvention = createNamingConvention(p, namingConvention);
     if (namingConvention != null) {
       namingConvention.loadFromProperties(p);
     }
-    if (autofetchConfig == null) {
-      autofetchConfig = new AutofetchConfig();
+    if (autoTuneConfig == null) {
+      autoTuneConfig = new AutoTuneConfig();
     }
-    loadAutofetchSettings(p);
+    loadAutoTuneSettings(p);
 
     if (dataSourceConfig == null) {
       dataSourceConfig = new DataSourceConfig();
     }
     loadDataSourceSettings(p);
 
+    explicitTransactionBeginMode = p.getBoolean("explicitTransactionBeginMode", explicitTransactionBeginMode);
     autoCommitMode = p.getBoolean("autoCommitMode", autoCommitMode);
     useJtaTransactionManager = p.getBoolean("useJtaTransactionManager", useJtaTransactionManager);
 
     disableClasspathSearch = p.getBoolean("disableClasspathSearch", disableClasspathSearch);
-    databasePlatform = createInstance(p, DatabasePlatform.class, "databasePlatform");
-    encryptKeyManager = createInstance(p, EncryptKeyManager.class, "encryptKeyManager");
-    encryptDeployManager = createInstance(p, EncryptDeployManager.class, "encryptDeployManager");
-    encryptor = createInstance(p, Encryptor.class, "encryptor");
-    dbEncrypt = createInstance(p, DbEncrypt.class, "dbEncrypt");
-    serverCacheFactory = createInstance(p, ServerCacheFactory.class, "serverCacheFactory");
-    serverCacheManager = createInstance(p, ServerCacheManager.class, "serverCacheManager");
+    currentUserProvider = createInstance(p, CurrentUserProvider.class, "currentUserProvider", currentUserProvider);
+    databasePlatform = createInstance(p, DatabasePlatform.class, "databasePlatform", databasePlatform);
+    encryptKeyManager = createInstance(p, EncryptKeyManager.class, "encryptKeyManager", encryptKeyManager);
+    encryptDeployManager = createInstance(p, EncryptDeployManager.class, "encryptDeployManager", encryptDeployManager);
+    encryptor = createInstance(p, Encryptor.class, "encryptor", encryptor);
+    dbEncrypt = createInstance(p, DbEncrypt.class, "dbEncrypt", dbEncrypt);
+    serverCacheFactory = createInstance(p, ServerCacheFactory.class, "serverCacheFactory", serverCacheFactory);
+    serverCacheManager = createInstance(p, ServerCacheManager.class, "serverCacheManager", serverCacheManager);
     cacheWarmingDelay = p.getInt("cacheWarmingDelay", cacheWarmingDelay);
     classPathReaderClassName = p.get("classpathreader");
     
@@ -1769,6 +2252,7 @@ public class ServerConfig {
     collectQueryStatsByNode = p.getBoolean("collectQueryStatsByNode", collectQueryStatsByNode);
     collectQueryOrigins = p.getBoolean("collectQueryOrigins", collectQueryOrigins);
 
+    updateAllPropertiesInBatch = p.getBoolean("updateAllPropertiesInBatch", updateAllPropertiesInBatch);
     updateChangesOnly = p.getBoolean("updateChangesOnly", updateChangesOnly);
     
     boolean defaultDeleteMissingChildren = p.getBoolean("defaultDeleteMissingChildren", updatesDeleteMissingChildren);
@@ -1784,19 +2268,29 @@ public class ServerConfig {
     int batchSize = p.getInt("batch.size", persistBatchSize);
     persistBatchSize = p.getInt("persistBatchSize", batchSize);
 
-    persistenceContextScope = PersistenceContextScope.valueOf(p.get("persistenceContextScope","TRANSACTION"));
+    persistenceContextScope = PersistenceContextScope.valueOf(p.get("persistenceContextScope", "TRANSACTION"));
 
+    changeLogIncludeInserts = p.getBoolean("changeLogIncludeInserts", changeLogIncludeInserts);
+    expressionEqualsWithNullAsNoop = p.getBoolean("expressionEqualsWithNullAsNoop", expressionEqualsWithNullAsNoop);
+
+    asOfViewSuffix = p.get("asOfViewSuffix", asOfViewSuffix);
+    asOfSysPeriod = p.get("asOfSysPeriod", asOfSysPeriod);
+    historyTableSuffix = p.get("historyTableSuffix", historyTableSuffix);
     dataSourceJndiName = p.get("dataSourceJndiName", dataSourceJndiName);
     databaseSequenceBatchSize = p.getInt("databaseSequenceBatchSize", databaseSequenceBatchSize);
     databaseBooleanTrue = p.get("databaseBooleanTrue", databaseBooleanTrue);
     databaseBooleanFalse = p.get("databaseBooleanFalse", databaseBooleanFalse);
     databasePlatformName = p.get("databasePlatformName", databasePlatformName);
-    uuidStoreAsBinary = p.getBoolean("uuidStoreAsBinary", uuidStoreAsBinary);
+    dbUuid = p.getEnum(DbUuid.class, "dbuuid", dbUuid);
+    if (p.getBoolean("uuidStoreAsBinary", false)) {
+      dbUuid = DbUuid.BINARY;
+    }
     localTimeWithNanos = p.getBoolean("localTimeWithNanos", localTimeWithNanos);
 
     lazyLoadBatchSize = p.getInt("lazyLoadBatchSize", lazyLoadBatchSize);
     queryBatchSize = p.getInt("queryBatchSize", queryBatchSize);
 
+    jsonInclude = p.getEnum(JsonConfig.Include.class, "jsonInclude", jsonInclude);
     String jsonDateTimeFormat = p.get("jsonDateTime", null);
     if (jsonDateTimeFormat != null) {
       jsonDateTime = JsonConfig.DateTime.valueOf(jsonDateTimeFormat);
@@ -1806,13 +2300,16 @@ public class ServerConfig {
 
     ddlGenerate = p.getBoolean("ddl.generate", ddlGenerate);
     ddlRun = p.getBoolean("ddl.run", ddlRun);
+    ddlCreateOnly = p.getBoolean("ddl.createOnly", ddlCreateOnly);
+    ddlInitSql = p.get("ddl.initSql", ddlInitSql);
+    ddlSeedSql = p.get("ddl.seedSql", ddlSeedSql);
 
     classes = getClasses(p);
   }
 
   private NamingConvention createNamingConvention(PropertiesWrapper properties, NamingConvention namingConvention) {
 
-    NamingConvention nc = createInstance(properties, NamingConvention.class, "namingconvention");
+    NamingConvention nc = createInstance(properties, NamingConvention.class, "namingconvention", null);
     return (nc != null) ? nc : namingConvention;
   }
 
@@ -1874,11 +2371,63 @@ public class ServerConfig {
     return databasePlatform.isDisallowBatchOnCascade() ? PersistBatch.NONE : persistBatchOnCascade;
   }
 
+  /**
+   * Return the Jackson ObjectMapper.
+   * <p>
+   * Note that this is not strongly typed as Jackson ObjectMapper is an optional dependency.
+   * </p>
+   */
   public Object getObjectMapper() {
     return objectMapper;
   }
 
+  /**
+   * Set the Jackson ObjectMapper.
+   * <p>
+   * Note that this is not strongly typed as Jackson ObjectMapper is an optional dependency.
+   * </p>
+   */
   public void setObjectMapper(Object objectMapper) {
     this.objectMapper = objectMapper;
   }
+
+  /**
+   * Return true if eq("someProperty", null) should to generate "1=1" rather than "is null" sql expression.
+   */
+  public boolean isExpressionEqualsWithNullAsNoop() {
+    return expressionEqualsWithNullAsNoop;
+  }
+
+  /**
+   * Set to true if you want eq("someProperty", null) to generate "1=1" rather than "is null" sql expression.
+   * <p>
+   *   Setting this to true has the effect that eq(propertyName, value), ieq(propertyName, value) and
+   *   ne(propertyName, value) have no effect when the value is null. The expression factory adds a NoopExpression
+   *   which will add "1=1" into the SQL rather than "is null".
+   * </p>
+   */
+  public void setExpressionEqualsWithNullAsNoop(boolean expressionEqualsWithNullAsNoop) {
+    this.expressionEqualsWithNullAsNoop = expressionEqualsWithNullAsNoop;
+  }
+
+  /**
+   * Specify how UUID is stored.
+   */
+  public enum DbUuid {
+
+    /**
+     * Store using native UUID in H2 and Postgres.
+     */
+    AUTO,
+
+    /**
+     * Store using DB VARCHAR.
+     */
+    VARCHAR,
+
+    /**
+     * Store using DB BINARY.
+     */
+    BINARY
+  }
 }

src/main/java/com/avaje/ebean/config/UnderscoreNamingConvention.java

@@ -3,23 +3,26 @@ package com.avaje.ebean.config;
 /**
  * Converts between Camel Case and Underscore based names for both table and
  * column names (and is the default naming convention in Ebean).
- * 
+ *
  * @author emcgreal
  * @author rbygrave
  */
 public class UnderscoreNamingConvention extends AbstractNamingConvention {
 
-  /** Force toUnderscore to return in upper case. */
+  /**
+   * Force toUnderscore to return in upper case.
+   */
   private boolean forceUpperCase = false;
 
-  /** The digits compressed. */
+  /**
+   * The digits compressed.
+   */
   private boolean digitsCompressed = true;
 
   /**
    * Create with a given sequence format.
-   * 
-   * @param sequenceFormat
-   *          the sequence format
+   *
+   * @param sequenceFormat the sequence format
    */
   public UnderscoreNamingConvention(String sequenceFormat) {
     super(sequenceFormat);
@@ -34,39 +37,30 @@ public class UnderscoreNamingConvention extends AbstractNamingConvention {
 
   /**
    * Returns the last part of the class name.
-   * 
-   * @param beanClass
-   *          the bean class
-   * 
+   *
+   * @param beanClass the bean class
    * @return the table name from class
    */
   public TableName getTableNameByConvention(Class<?> beanClass) {
 
-    return new TableName(getCatalog(),
-        getSchema(),
-        toUnderscoreFromCamel(beanClass.getSimpleName()));
+    return new TableName(getCatalog(), getSchema(), toUnderscoreFromCamel(beanClass.getSimpleName()));
   }
 
   /**
    * Converts Camel case property name to underscore based column name.
-   * 
+   *
    * @return the column from property
    */
-  public String getColumnFromProperty(Class<?> beanClass, String propertyName) {// Field
-                                                                                // field)
-                                                                                // {
+  public String getColumnFromProperty(Class<?> beanClass, String propertyName) {
 
     return toUnderscoreFromCamel(propertyName);
   }
 
   /**
    * Converts underscore based column name to Camel case property name.
-   * 
-   * @param beanClass
-   *          the bean class
-   * @param dbColumnName
-   *          the db column name
-   * 
+   *
+   * @param beanClass    the bean class
+   * @param dbColumnName the db column name
    * @return the property from column
    */
   public String getPropertyFromColumn(Class<?> beanClass, String dbColumnName) {
@@ -110,7 +104,7 @@ public class UnderscoreNamingConvention extends AbstractNamingConvention {
   protected String toUnderscoreFromCamel(String camelCase) {
 
     int lastUpper = -1;
-    StringBuffer sb = new StringBuffer();
+    StringBuilder sb = new StringBuilder(camelCase.length()+4);
     for (int i = 0; i < camelCase.length(); i++) {
       char c = camelCase.charAt(i);
 
@@ -144,16 +138,11 @@ public class UnderscoreNamingConvention extends AbstractNamingConvention {
   }
 
   /**
-   * To camel from underscore.
-   * 
-   * @param underscore
-   *          the underscore
-   * 
-   * @return the string
+   * Convert and return the from string from underscore to camel case.
    */
   protected String toCamelFromUnderscore(String underscore) {
 
-    StringBuffer result = new StringBuffer();
+    StringBuilder result = new StringBuilder(underscore.length());
     String[] vals = underscore.split("_");
 
     for (int i = 0; i < vals.length; i++) {

src/main/java/com/avaje/ebean/config/dbplatform/DB2Platform.java

@@ -5,6 +5,7 @@ import java.sql.Types;
 import javax.sql.DataSource;
 
 import com.avaje.ebean.BackgroundExecutor;
+import com.avaje.ebean.dbmigration.ddlgeneration.platform.DB2Ddl;
 
 /**
  * DB2 specific platform.
@@ -14,10 +15,11 @@ public class DB2Platform extends DatabasePlatform {
   public DB2Platform() {
     super();
     this.name = "db2";
-
-    // only support getGeneratedKeys with non-batch JDBC
-    // so generally use SEQUENCE instead for H2
+    this.maxTableNameLength = 18;
+    this.maxConstraintNameLength = 18;
     this.sqlLimiter = new Db2SqlLimiter();
+    this.platformDdl = new DB2Ddl(dbTypeMap, dbIdentity);
+
     this.dbIdentity.setSupportsGetGeneratedKeys(true);
     this.dbIdentity.setSupportsSequence(true);
 
@@ -25,8 +27,6 @@ public class DB2Platform extends DatabasePlatform {
     dbTypeMap.put(Types.REAL, new DbType("real"));
     dbTypeMap.put(Types.TINYINT, new DbType("smallint"));
     dbTypeMap.put(Types.DECIMAL, new DbType("decimal", 15));
-
-    this.dbDdlSyntax.setIdentity("generated by default as identity");
   }
 
   /**

src/main/java/com/avaje/ebean/config/dbplatform/DB2SequenceIdGenerator.java

@@ -17,7 +17,7 @@ public class DB2SequenceIdGenerator extends SequenceIdGenerator {
    */
   public DB2SequenceIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int batchSize) {
     super(be, ds, seqName, batchSize);
-    this.baseSql = "select nextval for " + seqName;
+    this.baseSql = "values nextval for " + seqName;
     this.unionBaseSql = " union " + baseSql;
   }
 

src/main/java/com/avaje/ebean/config/dbplatform/DatabasePlatform.java

@@ -1,15 +1,16 @@
 package com.avaje.ebean.config.dbplatform;
 
-import java.sql.Types;
-
-import javax.sql.DataSource;
-
 import com.avaje.ebean.BackgroundExecutor;
 import com.avaje.ebean.Query;
-
+import com.avaje.ebean.config.ServerConfig;
+import com.avaje.ebean.dbmigration.ddlgeneration.DdlHandler;
+import com.avaje.ebean.dbmigration.ddlgeneration.platform.PlatformDdl;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import javax.sql.DataSource;
+import java.sql.Types;
+
 /**
  * Database platform specific settings.
  */
@@ -17,6 +18,7 @@ public class DatabasePlatform {
 
   private static final Logger logger = LoggerFactory.getLogger(DatabasePlatform.class);
 
+
   /**
    * Behavior used when ending a query only transaction (at read committed isolation level).
    */
@@ -50,58 +52,63 @@ public class DatabasePlatform {
    */
   protected OnQueryOnly onQueryOnly = OnQueryOnly.ROLLBACK;
 
-  /** 
-   * The open quote used by quoted identifiers. 
+  /**
+   * The open quote used by quoted identifiers.
    */
   protected String openQuote = "\"";
 
   /**
-   *  The close quote used by quoted identifiers. 
+   * The close quote used by quoted identifiers.
    */
   protected String closeQuote = "\"";
 
-  /** 
-   * For limit/offset, row_number etc limiting of SQL queries. 
+  /**
+   * For limit/offset, row_number etc limiting of SQL queries.
    */
   protected SqlLimiter sqlLimiter = new LimitOffsetSqlLimiter();
 
-  /** 
-   * Mapping of JDBC to Database types. 
+  /**
+   * Mapping of JDBC to Database types.
    */
   protected DbTypeMap dbTypeMap = new DbTypeMap();
 
-  /** 
-   * DB specific DDL syntax. 
+  /**
+   * Set to true if the DB has native UUID type support.
    */
-  protected DbDdlSyntax dbDdlSyntax = new DbDdlSyntax();
+  protected boolean nativeUuidType;
 
-  /** 
-   * Defines DB identity/sequence features. 
+  /**
+   * Defines DB identity/sequence features.
    */
   protected DbIdentity dbIdentity = new DbIdentity();
 
-  /** 
-   * The JDBC type to map booleans to (by default). 
+  /**
+   * The history support for this database platform.
+   */
+  protected DbHistorySupport historySupport;
+
+  /**
+   * The JDBC type to map booleans to (by default).
    */
   protected int booleanDbType = Types.BOOLEAN;
 
-  /** 
-   * The JDBC type to map Blob to. 
+  /**
+   * The JDBC type to map Blob to.
    */
   protected int blobDbType = Types.BLOB;
 
-  /** 
-   * The JDBC type to map Clob to. 
+  /**
+   * The JDBC type to map Clob to.
    */
   protected int clobDbType = Types.CLOB;
 
-  /** 
-   * For Oracle treat empty strings as null. 
+  /**
+   * For Oracle treat empty strings as null.
    */
   protected boolean treatEmptyStringsAsNull;
 
-  /** 
-   * The database platform name. 
+  /**
+   * The database platform name.
    */
   protected String name = "generic";
 
@@ -120,7 +127,7 @@ public class DatabasePlatform {
    * The like clause. Can be overridden to disable default escape character.
    */
   protected String likeClause = "like ?";
-  
+
   protected DbEncrypt dbEncrypt;
 
   protected boolean idInExpandedForm;
@@ -140,6 +147,20 @@ public class DatabasePlatform {
    */
   protected boolean disallowBatchOnCascade;
 
+  protected PlatformDdl platformDdl;
+
+  /**
+   * The maximum length of table names - used specifically when derived
+   * default table names for intersection tables.
+   */
+  protected int maxTableNameLength = 60;
+
+  /**
+   * A value of 60 is a reasonable default for all databases except
+   * Oracle (limited to 30) and DB2 (limited to 18).
+   */
+  protected int maxConstraintNameLength = 60;
+
   /**
    * Instantiates a new database platform.
    */
@@ -152,13 +173,42 @@ public class DatabasePlatform {
    * "generic" is returned when no specific database platform has been set or
    * found.
    * </p>
-   * 
-   * @return the name
    */
   public String getName() {
     return name;
   }
 
+  /**
+   * Return the maximum table name length.
+   * <p>
+   * This is used when deriving names of intersection tables.
+   * </p>
+   */
+  public int getMaxTableNameLength() {
+    return maxTableNameLength;
+  }
+
+  /**
+   * Return the maximum constraint name allowed for the platform.
+   */
+  public int getMaxConstraintNameLength() {
+    return maxConstraintNameLength;
+  }
+
+  /**
+   * Return the platform specific DDL.
+   */
+  public PlatformDdl getPlatformDdl() {
+    return platformDdl;
+  }
+
+  /**
+   * Create and return a DDL handler for generating DDL scripts.
+   */
+  public DdlHandler createDdlHandler(ServerConfig serverConfig) {
+    return platformDdl.createDdlHandler(serverConfig);
+  }
+
   /**
    * Return true if the JDBC driver does not allow additional queries to execute
    * when a resultSet is being 'streamed' as is the case with findEach() etc.
@@ -172,16 +222,12 @@ public class DatabasePlatform {
 
   /**
    * Return a DB Sequence based IdGenerator.
-   * 
-   * @param be
-   *          the BackgroundExecutor that can be used to load the sequence if
-   *          desired
-   * @param ds
-   *          the DataSource
-   * @param seqName
-   *          the name of the sequence
-   * @param batchSize
-   *          the number of sequences that should be loaded
+   *
+   * @param be        the BackgroundExecutor that can be used to load the sequence if
+   *                  desired
+   * @param ds        the DataSource
+   * @param seqName   the name of the sequence
+   * @param batchSize the number of sequences that should be loaded
    */
   public IdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int batchSize) {
     return null;
@@ -215,24 +261,36 @@ public class DatabasePlatform {
     this.dbEncrypt = dbEncrypt;
   }
 
+  /**
+   * Return the history support for this database platform.
+   */
+  public DbHistorySupport getHistorySupport() {
+    return historySupport;
+  }
+
+  /**
+   * Set the history support for this database platform.
+   */
+  public void setHistorySupport(DbHistorySupport historySupport) {
+    this.historySupport = historySupport;
+  }
+
+  /**
+   * Return true if the DB supports native UUID.
+   */
+  public boolean isNativeUuidType() {
+    return nativeUuidType;
+  }
+
   /**
    * Return the mapping of JDBC to DB types.
-   * 
+   *
    * @return the db type map
    */
   public DbTypeMap getDbTypeMap() {
     return dbTypeMap;
   }
 
-  /**
-   * Return the DDL syntax for this platform.
-   * 
-   * @return the db ddl syntax
-   */
-  public DbDdlSyntax getDbDdlSyntax() {
-    return dbDdlSyntax;
-  }
-
   /**
    * Return the column alias prefix.
    */
@@ -263,7 +321,7 @@ public class DatabasePlatform {
 
   /**
    * Return the close quote for quoted identifiers.
-   * 
+   *
    * @return the close quote
    */
   public String getCloseQuote() {
@@ -272,7 +330,7 @@ public class DatabasePlatform {
 
   /**
    * Return the open quote for quoted identifiers.
-   * 
+   *
    * @return the open quote
    */
   public String getOpenQuote() {
@@ -281,7 +339,7 @@ public class DatabasePlatform {
 
   /**
    * Return the JDBC type used to store booleans.
-   * 
+   *
    * @return the boolean db type
    */
   public int getBooleanDbType() {
@@ -311,7 +369,7 @@ public class DatabasePlatform {
 
   /**
    * Return true if empty strings should be treated as null.
-   * 
+   *
    * @return true, if checks if is treat empty strings as null
    */
   public boolean isTreatEmptyStringsAsNull() {
@@ -347,7 +405,7 @@ public class DatabasePlatform {
 
   /**
    * Return the DB identity/sequence features for this platform.
-   * 
+   *
    * @return the db identity
    */
   public DbIdentity getDbIdentity() {
@@ -360,7 +418,7 @@ public class DatabasePlatform {
    * <p>
    * Basically add the clauses for limit/offset, rownum, row_number().
    * </p>
-   * 
+   *
    * @return the sql limiter
    */
   public SqlLimiter getSqlLimiter() {
@@ -369,15 +427,12 @@ public class DatabasePlatform {
 
   /**
    * Convert backticks to the platform specific open quote and close quote
-   * 
    * <p>
    * Specific plugins may implement this method to cater for platform specific
    * naming rules.
    * </p>
-   * 
-   * @param dbName
-   *          the db name
-   * 
+   *
+   * @param dbName the db name
    * @return the string
    */
   public String convertQuotedIdentifiers(String dbName) {
@@ -442,22 +497,4 @@ public class DatabasePlatform {
     return disallowBatchOnCascade;
   }
 
-  /**
-   * Generate and return the create sequence DDL.
-   */
-  public String ddlCreateSequence(String sequenceName, int initialValue, int allocationSize) {
-
-    StringBuilder sb = new StringBuilder("create sequence ");
-    sb.append(sequenceName);
-    if (initialValue > 1) {
-      sb.append(" start with ").append(initialValue);
-    }
-    if (allocationSize > 0 && allocationSize != 50) {
-      // at this stage ignoring allocationSize 50 as this is the 'default' and
-      // not consistent with the way Ebean batch fetches sequence values
-      sb.append(" increment by ").append(allocationSize);
-    }
-    sb.append(";");
-    return sb.toString();
-  }
 }

src/main/java/com/avaje/ebean/config/dbplatform/DbDdlSyntax.java

@@ -1,333 +0,0 @@
-package com.avaje.ebean.config.dbplatform;
-
-import com.avaje.ebean.config.TableName;
-
-/**
- * Used to support DB specific syntax for DDL generation.
- */
-public class DbDdlSyntax {
-
-  protected boolean renderIndexForFkey = true;
-
-  protected boolean inlinePrimaryKeyConstraint = false;
-
-  protected boolean addOneToOneUniqueContraint = true;
-
-  protected int maxConstraintNameLength = 32;
-
-  protected int columnNameWidth = 25;
-
-  /**
-   * Flag set when we want to disable constraints on each table (rather than globally).
-   */
-  protected boolean dropKeyConstraints;
-
-  protected String dropTableCascade;
-  protected String dropIfExists;
-
-  protected String newLine = "\n";
-
-  protected String identity = "auto_increment";
-  protected String identitySuffix = "";
-
-  protected String pkPrefix = "pk_";
-
-  protected String disableReferentialIntegrity;
-  protected String enableReferentialIntegrity;
-
-  protected String foreignKeySuffix;
-
-  /**
-   * Return the primary key name for a given bean descriptor.
-   */
-  public String getPrimaryKeyName(String tableName) {
-
-    String pk = pkPrefix + tableName;
-    if (pk.length() > maxConstraintNameLength) {
-      // need to trim the primary key name
-      pk = pk.substring(0, maxConstraintNameLength);
-    }
-    return pk;
-  }
-
-  /**
-   * Return the column definition for an identity column.
-   */
-  public String getIdentityColumnDefn(String columnDefn) {
-    String identity = getIdentity();
-    if (identity != null && identity.length() > 0) {
-      return columnDefn+" "+identity;
-    }
-    return columnDefn;
-  }
-  
-  /**
-   * Return the identity clause for DB's that have identities.
-   */
-  public String getIdentity() {
-    return identity;
-  }
-
-  /**
-   * Set the identity clause.
-   */
-  public void setIdentity(String identity) {
-    this.identity = identity;
-  }
-
-  /**
-   * Typically returns empty string but for SQLite and perhaps others
-   * the Identity/AutoIncrement clause comes after the primary key clause.
-   */
-  public String getIdentitySuffix() {
-    return identitySuffix;
-  }
-
-  /**
-   * Set the identity clause that would appear after the primary key clause.
-   * <p>
-   * Only used for SQLite at this stage.
-   * </p>
-   */
-  public void setIdentitySuffix(String identitySuffix) {
-    this.identitySuffix = identitySuffix;
-  }
-
-  /**
-   * Return the width for padding whitespace after column names.
-   */
-  public int getColumnNameWidth() {
-    return columnNameWidth;
-  }
-
-  /**
-   * Set the amount of padding to write after the column name.
-   */
-  public void setColumnNameWidth(int columnNameWidth) {
-    this.columnNameWidth = columnNameWidth;
-  }
-
-  /**
-   * Return the new line character.
-   */
-  public String getNewLine() {
-    return newLine;
-  }
-
-  /**
-   * Set the new line character.
-   */
-  public void setNewLine(String newLine) {
-    this.newLine = newLine;
-  }
-
-  /**
-   * Return the prefix used in naming primary keys.
-   */
-  public String getPkPrefix() {
-    return pkPrefix;
-  }
-
-  /**
-   * Set the prefix used in naming primary keys.
-   */
-  public void setPkPrefix(String pkPrefix) {
-    this.pkPrefix = pkPrefix;
-  }
-
-  /**
-   * Return the DB specific command to disable referential integrity
-   */
-  public String getDisableReferentialIntegrity() {
-    return disableReferentialIntegrity;
-  }
-
-  /**
-   * Set the DB specific command to disable referential integrity
-   */
-  public void setDisableReferentialIntegrity(String disableReferentialIntegrity) {
-    this.disableReferentialIntegrity = disableReferentialIntegrity;
-  }
-
-  /**
-   * Return the DB specific command to enable referential integrity
-   */
-  public String getEnableReferentialIntegrity() {
-    return enableReferentialIntegrity;
-  }
-
-  /**
-   * Set the DB specific command to enable referential integrity
-   */
-  public void setEnableReferentialIntegrity(String enableReferentialIntegrity) {
-    this.enableReferentialIntegrity = enableReferentialIntegrity;
-  }
-
-  /**
-   * Return true to is constraints are disabled on each table.
-   */
-  public boolean isDropKeyConstraints() {
-    return dropKeyConstraints;
-  }
-
-  /**
-   * Return some DDL to disable constraints on the given table.
-   */
-  public String dropKeyConstraintPrefix(String tableName, String fkName) {
-    return null;
-  }
-
-  /**
-   * Return true if indexes should be created for the foreign keys.
-   */
-  public boolean isRenderIndexForFkey() {
-    return renderIndexForFkey;
-  }
-
-  /**
-   * Set whether indexes should be created for the foreign keys.
-   */
-  public void setRenderIndexForFkey(boolean renderIndexForFkey) {
-    this.renderIndexForFkey = renderIndexForFkey;
-  }
-
-  /**
-   * Typically returns IF EXISTS (if that is supported by the database platform)
-   * or null.
-   */
-  public String getDropIfExists() {
-    return dropIfExists;
-  }
-
-  /**
-   * Set the IF EXISTS clause for dropping tables if that is supported by the
-   * database platform.
-   */
-  public void setDropIfExists(String dropIfExists) {
-    this.dropIfExists = dropIfExists;
-  }
-
-  /**
-   * Return prefix text that goes before drop table.
-   */
-  public String dropTablePrefix(String tableName) {
-    return "";
-  }
-
-  /**
-   * Return the cascade option for the drop table command.
-   */
-  public String getDropTableCascade() {
-    return dropTableCascade;
-  }
-
-  /**
-   * Set the cascade option for the drop table command.
-   */
-  public void setDropTableCascade(String dropTableCascade) {
-    this.dropTableCascade = dropTableCascade;
-  }
-
-  /**
-   * Return the foreign key suffix.
-   */
-  public String getForeignKeySuffix() {
-    return foreignKeySuffix;
-  }
-
-  /**
-   * Set the foreign key suffix.
-   */
-  public void setForeignKeySuffix(String foreignKeySuffix) {
-    this.foreignKeySuffix = foreignKeySuffix;
-  }
-
-  /**
-   * Return the maximum length that constraint names can be for this database.
-   */
-  public int getMaxConstraintNameLength() {
-    return maxConstraintNameLength;
-  }
-
-  /**
-   * Set the maximum length that constraint names can be for this database.
-   */
-  public void setMaxConstraintNameLength(int maxFkeyLength) {
-    this.maxConstraintNameLength = maxFkeyLength;
-  }
-
-  /**
-   * Return true if imported side of OneToOne's should have unique constraints
-   * generated.
-   */
-  public boolean isAddOneToOneUniqueContraint() {
-    return addOneToOneUniqueContraint;
-  }
-
-  /**
-   * Set to false for DB's that don't want both a unique and index on the
-   * imported OneToOne.
-   */
-  public void setAddOneToOneUniqueContraint(boolean addOneToOneUniqueContraint) {
-    this.addOneToOneUniqueContraint = addOneToOneUniqueContraint;
-  }
-
-  /**
-   * Return true if primary key constraints should be inlined when they are a
-   * single column.
-   */
-  public boolean isInlinePrimaryKeyConstraint() {
-    return inlinePrimaryKeyConstraint;
-  }
-
-  /**
-   * Set whether to inline primary key constraints.
-   */
-  public void setInlinePrimaryKeyConstraint(boolean inlinePrimaryKeyConstraint) {
-    this.inlinePrimaryKeyConstraint = inlinePrimaryKeyConstraint;
-  }
-
-  /**
-   * Builds and returns a fully index name.
-   */
-  public String getIndexName(String table, String propName, int ixCount) {
-
-
-    StringBuilder buffer = new StringBuilder(30);
-    buffer.append("ix_").append(TableName.parse(table));
-    buffer.append("_").append(propName);
-
-    addSuffix(buffer, ixCount);
-
-    return buffer.toString();
-  }
-
-  /**
-   * Builds and returns a fully qualified foreign key constraint name.
-   */
-  public String getForeignKeyName(String table, String propName, int fkCount) {
-
-    StringBuilder buffer = new StringBuilder(30);
-    buffer.append("fk_").append(TableName.parse(table));
-    buffer.append("_").append(propName);
-
-    addSuffix(buffer, fkCount);
-
-    return buffer.toString();
-  }
-
-  /**
-   * Adds the suffix.
-   */
-  protected void addSuffix(StringBuilder buffer, int count) {
-    String suffixNr = Integer.toString(count);
-    int suffixLen = suffixNr.length() + 1;
-
-    if (buffer.length() + suffixLen > maxConstraintNameLength) {
-      buffer.setLength(maxConstraintNameLength - suffixLen);
-    }
-    buffer.append("_");
-    buffer.append(suffixNr);
-  }
-
-}

src/main/java/com/avaje/ebean/config/dbplatform/DbHistorySupport.java

@@ -0,0 +1,64 @@
+package com.avaje.ebean.config.dbplatform;
+
+/**
+ * History support for the database platform.
+ */
+public interface DbHistorySupport {
+
+  /**
+   * Return true if the 'As of' predicate is part of the from clause
+   * (more standard sql2011). So true for Oracle total recall and false
+   * for Postgres and MySql (where we use views and history tables).
+   */
+  boolean isBindWithFromClause();
+
+  /**
+   * Return the number of columns bound in a 'As Of' predicate.
+   * <p>
+   * This is 1 for more standard sql2011 style and Postgres which has the
+   * special range type and 2 for view based solutions with 2 columns such as
+   * MySql.
+   * </p>
+   */
+  int getBindCount();
+
+  /**
+   * For sql2011 style this ignores the passed in view suffix and returns something
+   * like the ' as of timestamp ?' clause to be appended after the base table name.
+   *
+   * @param asOfViewSuffix the configured view suffix (typically "_with_history").
+   * @return The suffix appended after the base table name in the from and join clauses.
+   */
+  String getAsOfViewSuffix(String asOfViewSuffix);
+
+  /**
+   * Return the 'versions between timestamp' suffix.
+   */
+  String getVersionsBetweenSuffix(String asOfViewSuffix);
+
+  /**
+   * Return the 'as of' predicate added for the given table alias.
+   *
+   * @param tableAlias The table alias this predicate is added for
+   * @param sysPeriod  The name of the 'sys_period' column used for effective date time range.
+   * @return The predicate containing a single ? bind parameter which will be bound to the 'as at' timestamp value
+   */
+  String getAsOfPredicate(String tableAlias, String sysPeriod);
+
+  /**
+   * Return the column for the system period lower bound that will be included in findVersions() queries.
+   *
+   * @param tableAlias the table alias which will typically be 't0'
+   * @param sysPeriod  the name of the sys_period column
+   */
+  String getSysPeriodLower(String tableAlias, String sysPeriod);
+
+  /**
+   * Return the column for the system period upper bound that will be included in findVersions() queries.
+   *
+   * @param tableAlias the table alias which will typically be 't0'
+   * @param sysPeriod  the name of the sys_period column
+   */
+  String getSysPeriodUpper(String tableAlias, String sysPeriod);
+
+}

src/main/java/com/avaje/ebean/config/dbplatform/DbIdentity.java

@@ -1,5 +1,7 @@
 package com.avaje.ebean.config.dbplatform;
 
+import com.avaje.ebean.dbmigration.migration.IdentityType;
+
 /**
  * Defines the identity/sequence behaviour for the database.
  */
@@ -114,4 +116,28 @@ public class DbIdentity {
     this.idType = idType;
   }
 
+  /**
+   * Determine the id type to use based on requested identityType and
+   * the support for that in the database platform.
+   */
+  public IdType useIdentityType(IdentityType identityType) {
+
+    if (identityType == null) {
+      // use the default
+      return idType;
+    }
+    switch (identityType) {
+      case GENERATOR:
+        return IdType.GENERATOR;
+      case EXTERNAL:
+        return IdType.EXTERNAL;
+      case SEQUENCE:
+        return supportsSequence ? IdType.SEQUENCE : idType;
+      case IDENTITY:
+        return supportsIdentity ? IdType.IDENTITY : idType;
+    }
+
+    // use the default
+    return idType;
+  }
 }

src/main/java/com/avaje/ebean/config/dbplatform/DbPlatformName.java

@@ -0,0 +1,47 @@
+package com.avaje.ebean.config.dbplatform;
+
+/**
+ * Built in supported platforms.
+ */
+public enum DbPlatformName {
+
+  /**
+   * Generic base platform configured via properties or code.
+   */
+  GENERIC,
+
+  /**
+   * H2.
+   */
+  H2,
+
+  /**
+   * Postgres.
+   */
+  POSTGRES,
+
+  /**
+   * MySql.
+   */
+  MYSQL,
+
+  /**
+   * Oracle.
+   */
+  ORACLE,
+
+  /**
+   * Microsoft SQL Server.
+   */
+  SQLSERVER,
+
+  /**
+   * DB2.
+   */
+  DB2,
+
+  /**
+   * SQLite.
+   */
+  SQLITE
+}

src/main/java/com/avaje/ebean/config/dbplatform/DbStandardHistorySupport.java

@@ -0,0 +1,32 @@
+package com.avaje.ebean.config.dbplatform;
+
+/**
+ * SQL2011 based history support using 'as of timestamp' type clause appended as part of the the from or join clause.
+ */
+public abstract class DbStandardHistorySupport implements DbHistorySupport {
+
+  /**
+   * Return true as with sql2011 the 'as of timestamp' clause included in from or join clause.
+   */
+  @Override
+  public boolean isBindWithFromClause() {
+    return true;
+  }
+
+  /**
+   * Return 1 as the bind count (not 2 for effective start and effective end columns).
+   */
+  @Override
+  public int getBindCount() {
+    return 1;
+  }
+
+  /**
+   * Return null - not used for sql2011 based history.
+   */
+  @Override
+  public String getAsOfPredicate(String tableAlias, String sysPeriod) {
+    // not used for sql2011 based history
+    return null;
+  }
+}

src/main/java/com/avaje/ebean/config/dbplatform/DbType.java

@@ -8,6 +8,11 @@ package com.avaje.ebean.config.dbplatform;
  */
 public class DbType {
 
+  /**
+   * DB native UUID type (H2 and Postgres).
+   */
+  public static final int UUID = 5010;
+
   /**
    * Type to map Map content to Postgres HSTORE.
    */