[maven-release-plugin] prepare release ebean-8.4.2

Feature/postconstruct

README.md

@@ -6,12 +6,12 @@ Goto [https://ebean-orm.github.io/](http://ebean-orm.github.io/ "Ebean ORM's Web
 
 
 ## Maven cental links:
-[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")
+[Maven central - ebean](http://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22org.avaje.ebean%22%20AND%20a%3A%22ebean%22 "maven central ebean")
 
-[Maven central - all related projects](http://search.maven.org/#search%7Cga%7C1%7Cavaje-ebeanorm "maven central ebeanorm")
+[Maven central - all related projects](http://search.maven.org/#search%7Cga%7C1%7Cebean "maven central all related projects")
 
 ## Current versions
-* [![Maven Central : avaje-ebeanorm](https://maven-badges.herokuapp.com/maven-central/org.avaje.ebeanorm/avaje-ebeanorm/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.avaje.ebeanorm/avaje-ebeanorm) - avaje-ebeanorm 
-* [![Maven Central : avaje-ebeanorm-agent](https://maven-badges.herokuapp.com/maven-central/org.avaje.ebeanorm/avaje-ebeanorm-agent/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.avaje.ebeanorm/avaje-ebeanorm-agent) - avaje-ebeanorm-agent
-* [![Maven Central : avaje-ebeanorm-agent](https://maven-badges.herokuapp.com/maven-central/org.avaje.ebeanorm/avaje-ebeanorm-mavenenhancer/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.avaje.ebeanorm/avaje-ebeanorm-mavenenhancer) - avaje-ebeanorm-mavenenhancer
+* [![Maven Central : ebean](https://maven-badges.herokuapp.com/maven-central/org.avaje.ebean/ebean/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.avaje.ebean/ebean) - ebean
+* [![Maven Central : ebean-agent](https://maven-badges.herokuapp.com/maven-central/org.avaje.ebean/ebean-agent/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.avaje.ebean/ebean-agent) - ebean-agent
+* [![Maven Central : ebean-maven-plugin](https://maven-badges.herokuapp.com/maven-central/org.avaje.ebean/ebean-maven-plugin/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.avaje.ebean/ebean-maven-plugin) - ebean-maven-plugin
 

pom.xml

@@ -7,12 +7,12 @@
     <version>1.1</version>
   </parent>
 
-  <groupId>org.avaje.ebeanorm</groupId>
-  <artifactId>avaje-ebeanorm</artifactId>
-  <version>7.16.2</version>
+  <groupId>org.avaje.ebean</groupId>
+  <artifactId>ebean</artifactId>
+  <version>8.4.2</version>
   <packaging>jar</packaging>
 
-  <name>avaje-ebeanorm</name>
+  <name>ebean</name>
   <url>http://ebean-orm.github.io/</url>
 
   <properties>
@@ -36,8 +36,8 @@
   </developers>
 
   <scm>
-    <developerConnection>scm:git:https://github.com/ebean-orm/avaje-ebeanorm.git</developerConnection>
-    <tag>avaje-ebeanorm-7.16.2</tag>
+    <developerConnection>scm:git:https://github.com/ebean-orm/ebean.git</developerConnection>
+    <tag>ebean-8.4.2</tag>
   </scm>
 
   <dependencies>
@@ -69,19 +69,19 @@
     <dependency>
       <groupId>org.avaje</groupId>
       <artifactId>avaje-classpath-scanner-api</artifactId>
-      <version>2.1</version>
+      <version>2.2</version>
     </dependency>
 
     <dependency>
       <groupId>org.avaje</groupId>
       <artifactId>avaje-classpath-scanner</artifactId>
-      <version>2.1.1</version>
+      <version>2.2.1</version>
     </dependency>
 
     <dependency>
       <groupId>org.avaje</groupId>
       <artifactId>avaje-dbmigration</artifactId>
-      <version>1.1.1</version>
+      <version>1.2.1</version>
     </dependency>
 
     <dependency>
@@ -90,6 +90,12 @@
       <version>[1.7.1,1.7.99)</version>
     </dependency>
 
+    <dependency>
+      <groupId>org.antlr</groupId>
+      <artifactId>antlr4-runtime</artifactId>
+      <version>4.5.3</version>
+    </dependency>
+
     <!-- Jackson core used internally by Ebean -->
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
@@ -166,9 +172,9 @@
     </dependency>
 
     <dependency>
-      <groupId>org.avaje.ebeanorm</groupId>
-      <artifactId>avaje-ebeanorm-agent</artifactId>
-      <version>4.11.1</version>
+      <groupId>org.avaje.ebean</groupId>
+      <artifactId>ebean-agent</artifactId>
+      <version>8.1.1</version>
       <scope>test</scope>
     </dependency>
 
@@ -177,7 +183,7 @@
     <dependency>
       <groupId>com.h2database</groupId>
       <artifactId>h2</artifactId>
-      <version>1.4.189</version>
+      <version>1.4.192</version>
       <scope>provided</scope>
     </dependency>
     
@@ -241,16 +247,15 @@
       </plugin>
 
       <plugin>
-        <groupId>org.avaje.ebeanorm</groupId>
-        <artifactId>avaje-ebeanorm-mavenenhancer</artifactId>
-        <version>4.11.1</version>
+        <groupId>org.avaje.ebean</groupId>
+        <artifactId>ebean-maven-plugin</artifactId>
+        <version>8.1.1</version>
         <executions>
           <execution>
             <id>test</id>
             <phase>process-test-classes</phase>
             <configuration>
               <classSource>target/test-classes</classSource>
-              <!--<packages>com.avaje.tests.**</packages>-->
               <transformArgs>debug=1</transformArgs>
             </configuration>
             <goals>
@@ -298,7 +303,7 @@
         <artifactId>maven-javadoc-plugin</artifactId>
         <version>2.9.1</version>
         <configuration>
-          <doctitle>Ebean 7</doctitle>
+          <doctitle>Ebean 8</doctitle>
           <overview>src/main/java/com/avaje/ebean/overview.html</overview>
           <source>1.8</source>
           <doclet>org.avaje.doclet.PygmentsDoclet</doclet>

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

@@ -38,6 +38,11 @@ public interface BeanState {
    */
   void setDisableLazyLoad(boolean disableLazyLoading);
 
+  /**
+   * Return true if the bean has lazy loading disabled.
+   */
+  boolean isDisableLazyLoad();
+
   /**
    * Set the loaded state of the property given it's name.
    *
@@ -115,4 +120,9 @@ public interface BeanState {
    * for a fully loaded entity bean.
    */
   void setLoaded();
+
+  /**
+   * Reset the bean putting it into NEW state such that a save() results in an insert.
+   */
+  void resetForInsert();
 }

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

@@ -499,6 +499,13 @@ public final class Ebean {
     serverMgr.getDefaultServer().endTransaction();
   }
 
+  /**
+   * Mark the current transaction as rollback only.
+   */
+  public static void setRollbackOnly() {
+    serverMgr.getDefaultServer().currentTransaction().setRollbackOnly();
+  }
+
   /**
    * Return a map of the differences between two objects of the same type.
    * <p>
@@ -945,6 +952,21 @@ public final class Ebean {
     return serverMgr.getDefaultServer().createCsvReader(beanType);
   }
 
+  /**
+   * Create a named query.
+   * <p>
+   * For RawSql the named query is expected to be in ebean.xml.
+   * </p>
+   *
+   * @param beanType   The type of entity bean
+   * @param namedQuery The name of the query
+   * @param <T>        The type of entity bean
+   * @return The query
+   */
+  public static <T> Query<T> createNamedQuery(Class<T> beanType, String namedQuery) {
+    return serverMgr.getDefaultServer().createNamedQuery(beanType, namedQuery);
+  }
+
   /**
    * Create a query for a type of entity bean.
    * <p>
@@ -960,39 +982,7 @@ public final class Ebean {
    * {@link Query#findSet()} etc will execute against the same EbeanServer from
    * which is was created.
    * </p>
-   * 
-   * <pre>{@code
-   *   // Find order 2 additionally fetching the customer, details and details.product
-   *   // name.
-   * 
-   *   Order order = Ebean.find(Order.class)
-   *     .fetch("customer")
-   *     .fetch("details")
-   *     .fetch("detail.product", "name")
-   *     .setId(2)
-   *     .findUnique();
-   * 
-   *   // Find order 2 additionally fetching the customer, details and details.product
-   *   // name.
-   *   // Note: same query as above but using the query language
-   *   // Note: using a named query would be preferred practice
-   * 
-   *   String oql = "find order fetch customer fetch details fetch details.product (name) where id = :orderId ";
-   * 
-   *   Query<Order> query = Ebean.find(Order.class);
-   *   query.setQuery(oql);
-   *   query.setParameter("orderId", 2);
-   * 
-   *   Order order = query.findUnique();
-   * 
-   *   // Using a named query
-   *   Query<Order> query = Ebean.find(Order.class, "with.details");
-   *   query.setParameter("orderId", 2);
-   * 
-   *   Order order = query.findUnique();
-   * 
-   * }</pre>
-   * 
+   *
    * @param beanType
    *          the class of entity to be fetched
    * @return A ORM Query object for this beanType
@@ -1002,6 +992,47 @@ public final class Ebean {
     return serverMgr.getDefaultServer().createQuery(beanType);
   }
 
+  /**
+   * Parse the Ebean query language statement returning the query which can then
+   * be modified (add expressions, change order by clause, change maxRows, change
+   * fetch and select paths etc).
+   *
+   * <h3>Example</h3>
+   *
+   * <pre>{@code
+   *
+   *
+   *   // Find order additionally fetching the customer, details and details.product name.
+   *
+   *   String eql = "fetch customer fetch details fetch details.product (name) where id = :orderId ";
+   *
+   *   Query<Order> query = Ebean.createQuery(Order.class, eql);
+   *   query.setParameter("orderId", 2);
+   *
+   *   Order order = query.findUnique();
+   *
+   *   // This is the same as:
+   *
+   *   Order order = Ebean.find(Order.class)
+   *     .fetch("customer")
+   *     .fetch("details")
+   *     .fetch("detail.product", "name")
+   *     .setId(2)
+   *     .findUnique();
+   *
+   * }</pre>
+   *
+   * @param beanType The type of bean to fetch
+   * @param eql The Ebean query
+   * @param <T> The type of the entity bean
+   *
+   * @return The query with expressions defined as per the parsed query statement
+   */
+  public static <T> Query<T> createQuery(Class<T> beanType, String eql) {
+
+    return serverMgr.getDefaultServer().createQuery(beanType, eql);
+  }
+
   /**
    * Create a query for a type of entity bean.
    * <p>

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

@@ -167,8 +167,9 @@ public interface EbeanServer {
   /**
    * Create a new instance of T that is an EntityBean.
    * <p>
-   * Generally not expected to be useful (now dynamic subclassing support was removed in
-   * favour of always using enhancement).
+   * Useful if you use BeanPostConstructListeners or &#64;PostConstruct Annotations.
+   * In this case you should not use "new Bean...()". Making all bean construtors protected
+   * could be a good idea here. 
    * </p>
    */
   <T> T createEntityBean(Class<T> type);
@@ -199,6 +200,19 @@ public interface EbeanServer {
    */
   <T> UpdateQuery<T> update(Class<T> beanType);
 
+  /**
+   * Create a named query.
+   * <p>
+   * For RawSql the named query is expected to be in ebean.xml.
+   * </p>
+   *
+   * @param beanType   The type of entity bean
+   * @param namedQuery The name of the query
+   * @param <T>        The type of entity bean
+   * @return The query
+   */
+  <T> Query<T> createNamedQuery(Class<T> beanType, String namedQuery);
+
   /**
    * Create a query for an entity bean and synonym for {@link #find(Class)}.
    *
@@ -206,6 +220,43 @@ public interface EbeanServer {
    */
   <T> Query<T> createQuery(Class<T> beanType);
 
+  /**
+   * Parse the Ebean query language statement returning the query which can then
+   * be modified (add expressions, change order by clause, change maxRows, change
+   * fetch and select paths etc).
+   *
+   * <h3>Example</h3>
+   *
+   * <pre>{@code
+   *
+   *   // Find order additionally fetching the customer, details and details.product name.
+   *
+   *   String eql = "fetch customer fetch details fetch details.product (name) where id = :orderId ";
+   *
+   *   Query<Order> query = Ebean.createQuery(Order.class, eql);
+   *   query.setParameter("orderId", 2);
+   *
+   *   Order order = query.findUnique();
+   *
+   *   // This is the same as:
+   *
+   *   Order order = Ebean.find(Order.class)
+   *     .fetch("customer")
+   *     .fetch("details")
+   *     .fetch("detail.product", "name")
+   *     .setId(2)
+   *     .findUnique();
+   *
+   * }</pre>
+   *
+   * @param beanType The type of bean to fetch
+   * @param eql The Ebean query
+   * @param <T> The type of the entity bean
+   *
+   * @return The query with expressions defined as per the parsed query statement
+   */
+  <T> Query<T> createQuery(Class<T> beanType, String eql);
+
   /**
    * Create a query for a type of entity bean.
    * <p>
@@ -689,20 +740,38 @@ public interface EbeanServer {
   <T> T getReference(Class<T> beanType, Object id);
 
   /**
-   * Return the number of 'top level' or 'root' entities this query should
-   * return.
+   * Return the number of 'top level' or 'root' entities this query should return.
    *
-   * @see Query#findRowCount()
-   * @see com.avaje.ebean.Query#findFutureRowCount()
+   * @see Query#findCount()
+   * @see Query#findFutureCount()
    */
-  <T> int findRowCount(Query<T> query, Transaction transaction);
+  <T> int findCount(Query<T> query, Transaction transaction);
 
   /**
    * Return the Id values of the query as a List.
    *
-   * @see com.avaje.ebean.Query#findIds()
+   * @see Query#findIds()
    */
-  <T> List<Object> findIds(Query<T> query, Transaction transaction);
+  <A> List<A> findIds(Query<?> query, Transaction transaction);
+
+  /**
+   * Return a QueryIterator for the query.
+   * <p>
+   * Generally using {@link #findEach(Query, QueryEachConsumer, Transaction)} or
+   * {@link #findEachWhile(Query, QueryEachWhileConsumer, Transaction)} is preferred
+   * to findIterate(). The reason is that those methods automatically take care of
+   * closing the queryIterator (and the underlying jdbc statement and resultSet).
+   * </p>
+   * <p>
+   * This is similar to findEach in that not all the result beans need to be held
+   * in memory at the same time and as such is good for processing large queries.
+   * </p>
+   *
+   * @see Query#findIterate()
+   * @see Query#findEach(QueryEachConsumer)
+   * @see Query#findEachWhile(QueryEachWhileConsumer)
+   */
+  <T> QueryIterator<T> findIterate(Query<T> query, Transaction transaction);
 
   /**
    * Execute the query visiting the each bean one at a time.
@@ -816,9 +885,9 @@ public interface EbeanServer {
    * @param query       the query to execute the row count on
    * @param transaction the transaction (can be null).
    * @return a Future object for the row count query
-   * @see com.avaje.ebean.Query#findFutureRowCount()
+   * @see com.avaje.ebean.Query#findFutureCount()
    */
-  <T> FutureRowCount<T> findFutureRowCount(Query<T> query, Transaction transaction);
+  <T> FutureRowCount<T> findFutureCount(Query<T> query, Transaction transaction);
 
   /**
    * Execute find Id's query in a background thread.
@@ -921,7 +990,41 @@ public interface EbeanServer {
    * @return the map of fetched beans.
    * @see Query#findMap()
    */
-  <T> Map<?, T> findMap(Query<T> query, Transaction transaction);
+  <K, T> Map<K, T> findMap(Query<T> query, Transaction transaction);
+
+  /**
+   * Execute the query returning a list of values for a single property.
+   *
+   * <h3>Example 1:</h3>
+   * <pre>{@code
+   *
+   *  List<String> names =
+   *    Ebean.find(Customer.class)
+   *      .select("name")
+   *      .orderBy().asc("name")
+   *      .findSingleAttributeList();
+   *
+   * }</pre>
+   *
+   * <h3>Example 2:</h3>
+   * <pre>{@code
+   *
+   *  List<String> names =
+   *    Ebean.find(Customer.class)
+   *      .setDistinct(true)
+   *      .select("name")
+   *      .where().eq("status", Customer.Status.NEW)
+   *      .orderBy().asc("name")
+   *      .setMaxRows(100)
+   *      .findSingleAttributeList();
+   *
+   * }</pre>
+   *
+   * @return the list of values for the selected property
+   *
+   * @see Query#findSingleAttributeList()
+   */
+  <A> List<A> findSingleAttributeList(Query<?> query, Transaction transaction);
 
   /**
    * Execute the query returning at most one entity bean or null (if no matching

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

@@ -135,6 +135,11 @@ public interface ExpressionFactory {
    */
   Expression ieq(String propertyName, String value);
 
+  /**
+   * Case Insensitive Equal To that allows for named parameter use.
+   */
+  Expression ieqObject(String propertyName, Object value);
+
   /**
    * Between - property between the two given values.
    */
@@ -192,6 +197,11 @@ public interface ExpressionFactory {
    */
   ExampleExpression exampleLike(Object example, boolean caseInsensitive, LikeType likeType);
 
+  /**
+   * Like with support for named parameters.
+   */
+  Expression like(String propertyName, Object value, boolean caseInsensitive, LikeType likeType);
+
   /**
    * Like - property like value where the value contains the SQL wild card
    * characters % (percentage) and _ (underscore).

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

@@ -31,7 +31,7 @@ import java.util.Set;
  * more methods than you would initially expect (the ones duplicated from
  * Query).
  * </p>
- * 
+ *
  * @see Query#where()
  */
 public interface ExpressionList<T> {
@@ -83,14 +83,14 @@ public interface ExpressionList<T> {
 
   /**
    * Add an orderBy clause to the query.
-   * 
+   *
    * @see Query#orderBy(String)
    */
   Query<T> orderBy(String orderBy);
 
   /**
    * Add an orderBy clause to the query.
-   * 
+   *
    * @see Query#orderBy(String)
    */
   Query<T> setOrderBy(String orderBy);
@@ -116,12 +116,6 @@ public interface ExpressionList<T> {
    */
   Query<T> asDraft();
 
-  /**
-   * Deprecated in favour of setIncludeSoftDeletes().
-   */
-  @Deprecated
-  Query<T> includeSoftDeletes();
-
   /**
    * Execute the query including soft deleted rows.
    */
@@ -147,6 +141,13 @@ public interface ExpressionList<T> {
    */
   int update();
 
+  /**
+   * Execute the query iterating over the results.
+   *
+   * @see Query#findIterate()
+   */
+  QueryIterator<T> findIterate();
+
   /**
    * Execute the query process the beans one at a time.
    *
@@ -164,17 +165,17 @@ public interface ExpressionList<T> {
 
   /**
    * Execute the query returning a list.
-   * 
+   *
    * @see Query#findList()
    */
   List<T> findList();
 
   /**
    * Execute the query returning the list of Id's.
-   * 
+   *
    * @see Query#findIds()
    */
-  List<Object> findIds();
+  <A> List<A> findIds();
 
   /**
    * Return the count of entities this query should return.
@@ -182,26 +183,53 @@ public interface ExpressionList<T> {
    * This is the number of 'top level' or 'root level' entities.
    * </p>
    */
-  int findRowCount();
+  int findCount();
 
   /**
    * Execute the query returning a set.
-   * 
+   *
    * @see Query#findSet()
    */
   Set<T> findSet();
 
   /**
    * Execute the query returning a map.
-   * 
+   *
    * @see Query#findMap()
    */
-  Map<?, T> findMap();
+  <K> Map<K, T> findMap();
 
   /**
-   * Return a typed map specifying the key property and type.
+   * Execute the query returning a list of values for a single property.
+   *
+   * <h3>Example 1:</h3>
+   * <pre>{@code
+   *
+   *  List<String> names =
+   *    Ebean.find(Customer.class)
+   *      .select("name")
+   *      .orderBy().asc("name")
+   *      .findSingleAttributeList();
+   *
+   * }</pre>
+   *
+   * <h3>Example 2:</h3>
+   * <pre>{@code
+   *
+   *  List<String> names =
+   *    Ebean.find(Customer.class)
+   *      .setDistinct(true)
+   *      .select("name")
+   *      .where().eq("status", Customer.Status.NEW)
+   *      .orderBy().asc("name")
+   *      .setMaxRows(100)
+   *      .findSingleAttributeList();
+   *
+   * }</pre>
+   *
+   * @return the list of values for the selected property
    */
-  <K> Map<K, T> findMap(String keyProperty, Class<K> keyType);
+  <A> List<A> findSingleAttributeList();
 
   /**
    * Execute the query returning a single bean or null (if no matching
@@ -225,10 +253,10 @@ public interface ExpressionList<T> {
    * execution status (isDone etc) and get the value (with or without a
    * timeout).
    * </p>
-   * 
+   *
    * @return a Future object for the row count query
    */
-  FutureRowCount<T> findFutureRowCount();
+  FutureRowCount<T> findFutureCount();
 
   /**
    * Execute find Id's query in a background thread.
@@ -237,7 +265,7 @@ public interface ExpressionList<T> {
    * execution status (isDone etc) and get the value (with or without a
    * timeout).
    * </p>
-   * 
+   *
    * @return a Future object for the list of Id's
    */
   FutureIds<T> findFutureIds();
@@ -249,7 +277,7 @@ public interface ExpressionList<T> {
    * execution status (isDone etc) and get the value (with or without a
    * timeout).
    * </p>
-   * 
+   *
    * @return a Future object for the list result of the query
    */
   FutureList<T> findFutureList();
@@ -312,7 +340,7 @@ public interface ExpressionList<T> {
   /**
    * Specify specific properties to fetch on the main/root bean (aka partial
    * object).
-   * 
+   *
    * @see Query#select(String)
    */
   Query<T> select(String properties);
@@ -337,28 +365,28 @@ public interface ExpressionList<T> {
 
   /**
    * Set the first row to fetch.
-   * 
+   *
    * @see Query#setFirstRow(int)
    */
   Query<T> setFirstRow(int firstRow);
 
   /**
    * Set the maximum number of rows to fetch.
-   * 
+   *
    * @see Query#setMaxRows(int)
    */
   Query<T> setMaxRows(int maxRows);
 
   /**
    * Set the name of the property which values become the key of a map.
-   * 
+   *
    * @see Query#setMapKey(String)
    */
   Query<T> setMapKey(String mapKey);
 
   /**
    * Set to true to use the query for executing this query.
-   * 
+   *
    * @see Query#setUseCache(boolean)
    */
   Query<T> setUseCache(boolean useCache);
@@ -619,7 +647,7 @@ public interface ExpressionList<T> {
    * To get control over the options you can create an ExampleExpression and set
    * those options such as case insensitive etc.
    * </p>
-   * 
+   *
    * <pre>{@code
    *
    * // create an example bean and set the properties
@@ -627,26 +655,26 @@ public interface ExpressionList<T> {
    * Customer example = new Customer();
    * 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("id", 2).findList();
-   * 
+   *
    * }</pre>
-   * 
+   *
    * Similarly you can create an ExampleExpression
-   * 
+   *
    * <pre>{@code
    *
    * Customer example = new Customer();
    * example.setName("Rob%");
    * example.setNotes("%something%");
-   * 
+   *
    * // create a ExampleExpression with more control
    * ExampleExpression qbe = new ExampleExpression(example, true, LikeType.EQUAL_TO).includeZeros();
-   * 
+   *
    * List<Customer> list = Ebean.find(Customer.class).where().add(qbe).findList();
    *
    * }</pre>
@@ -748,7 +776,7 @@ public interface ExpressionList<T> {
    * Exists expression
    */
   ExpressionList<T> exists(Query<?> subQuery);
-  
+
   /**
    * Not exists expression
    */
@@ -775,7 +803,7 @@ public interface ExpressionList<T> {
    * Expression where all the property names in the map are equal to the
    * corresponding value.
    * </p>
-   * 
+   *
    * @param propertyMap
    *          a map keyed by property names.
    */

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

@@ -29,8 +29,7 @@ import java.io.Serializable;
  * // Find Orders join details using a single SQL query
  * }</pre>
  * <p>
- * Example: Using a "query join" instead of a "fetch join" we instead use 2 SQL
- * queries
+ * Example: Using a "query join" instead of a "fetch join" we instead use 2 SQL queries
  * </p>
  * 
  * <pre>{@code
@@ -117,7 +116,7 @@ import java.io.Serializable;
  * <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.contacts","contactName, phone, email")
  *   .fetch("customer.shippingAddress")
  *   .where().eq("status",Order.Status.NEW)
  *   .findList();
@@ -125,12 +124,7 @@ import java.io.Serializable;
  * // query 1) find order where status = Order.Status.NEW
  * //  
  * // .. if lazy loading of customers is invoked 
- * // .. use a batch size of 5 to load the customers 
- *  
- *       find  customer (name) 
- *       fetch customer.contacts (contactName, phone, email) 
- *       fetch customer.shippingAddress (*) 
- *       where id in (?,?,?,?,?)
+ * // .. use a batch size of 5 to load the customers
  * 
  * }</pre>
  * 

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

@@ -9,8 +9,6 @@ import java.util.concurrent.Future;
  * It extends the java.util.concurrent.Future with the ability to get the Id's
  * while the query is still executing in the background.
  * </p>
- * 
- * @author rbygrave
  */
 public interface FutureIds<T> extends Future<List<Object>> {
 
@@ -19,16 +17,4 @@ public interface FutureIds<T> extends Future<List<Object>> {
    */
   Query<T> getQuery();
 
-  /**
-   * Return the list of Id's which could be partially populated.
-   * <p>
-   * That is the query getting the id's could still be running and adding id's
-   * to this list.
-   * </p>
-   * <p>
-   * To get the list of Id's ensuring the query has finished use the
-   * {@link Future#get()} method instead of this one.
-   * </p>
-   */
-  List<Object> getPartialIds();
 }

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

@@ -59,11 +59,11 @@ package com.avaje.ebean;
  *          .and()
  *            .startsWith("name", "r")
  *            .eq("anniversary", onAfter)
- *            .endJunction()
+ *            .endAnd()
  *          .and()
  *            .eq("status", Customer.Status.ACTIVE)
  *            .gt("id", 0)
- *            .endJunction()
+ *            .endAnd()
  *      .order().asc("name");
  *
  * q.findList();
@@ -84,39 +84,41 @@ public interface Junction<T> extends Expression, ExpressionList<T> {
     /**
      * AND group.
      */
-    AND(" and ", ""),
+    AND(" and ", "", false),
 
     /**
      * OR group.
      */
-    OR(" or ", ""),
+    OR(" or ", "", false),
 
     /**
      * NOT group.
      */
-    NOT(" and ", "not "),
+    NOT(" and ", "not ", false),
 
     /**
      * Text search AND group.
      */
-    MUST("must", ""),
+    MUST("must", "", true),
 
     /**
      * Text search NOT group.
      */
-    MUST_NOT("must_not", ""),
+    MUST_NOT("must_not", "", true),
 
     /**
      * Text search OR group.
      */
-    SHOULD("should", "");
+    SHOULD("should", "", true);
 
-    String prefix;
-    String literal;
+    private String prefix;
+    private String literal;
+    private boolean text;
 
-    Type(String literal, String prefix) {
+    Type(String literal, String prefix, boolean text) {
       this.literal = literal;
       this.prefix = prefix;
+      this.text = text;
     }
 
     /**
@@ -132,6 +134,14 @@ public interface Junction<T> extends Expression, ExpressionList<T> {
     public String prefix() {
       return prefix;
     }
+
+    /**
+     * Return true if this is a text type.
+     */
+    public boolean isText() {
+      return text;
+    }
+
   }
 
 }

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

@@ -495,7 +495,7 @@ public abstract class Model {
     /**
      * Return typically a different EbeanServer to the default.
      * <p>
-     * This is equivilent to {@link Ebean#getServer(String)}
+     * This is equivalent to {@link Ebean#getServer(String)}
      * 
      * @param server
      *          The name of the EbeanServer. If this is null then the default EbeanServer is
@@ -598,7 +598,7 @@ public abstract class Model {
      * <p>
      * Equivalent to {@link Query#findIds()}
      */
-    public List<Object> findIds() {
+    public <A> List<A> findIds() {
       return query().findIds();
     }
 
@@ -660,36 +660,43 @@ public abstract class Model {
      * <p>
      * Equivalent to {@link Query#findMap()}
      */
-    public Map<?, T> findMap() {
+    public <K> Map<K, T> findMap() {
       return query().findMap();
     }
 
-    /**
-     * Executes the query and returns the results as a map of the objects specifying the map key
-     * property.
-     * <p>
-     * Equivalent to {@link Query#findMap(String, Class)}
-     */
-    public <K> Map<K, T> findMap(String keyProperty, Class<K> keyType) {
-      return query().findMap(keyProperty, keyType);
-    }
-
     /**
      * Executes a find row count query in a background thread.
      * <p>
-     * Equivalent to {@link Query#findFutureRowCount()}
+     * Equivalent to {@link Query#findFutureCount()}
+     */
+    public FutureRowCount<T> findFutureCount() {
+      return query().findFutureCount();
+    }
+
+    /**
+     * Deprecated in favor of findFutureCount().
+     * <p>
+     * Equivalent to {@link Query#findFutureCount()}
      */
     public FutureRowCount<T> findFutureRowCount() {
-      return query().findFutureRowCount();
+      return query().findFutureCount();
     }
 
     /**
      * Returns the total number of entities for this type. *
      * <p>
-     * Equivalent to {@link Query#findRowCount()}
+     * Equivalent to {@link Query#findCount()}
+     */
+    public int findCount() {
+      return query().findCount();
+    }
+
+    /**
+     * Deprecated in favor of findCount().
+     * @deprecated
      */
     public int findRowCount() {
-      return query().findRowCount();
+      return query().findCount();
     }
 
     /**

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

@@ -148,6 +148,13 @@ public final class OrderBy<T> implements Serializable {
     return copy;
   }
 
+  /**
+   * Add to the order by by parsing a raw expression.
+   */
+  public void add(String rawExpression) {
+    parse(rawExpression);
+  }
+
   /**
    * Add a property to the order by.
    */
@@ -206,8 +213,9 @@ public final class OrderBy<T> implements Serializable {
    * order by clause and replace.
    * </p>
    */
-  public void clear() {
+  public OrderBy<T> clear() {
     list.clear();
+    return this;
   }
 
   /**

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

@@ -44,30 +44,6 @@ import java.util.concurrent.Future;
  *
  * }</pre>
  *
- * <h4>Example: typical use including total row count</h4>
- * <pre>{@code
- *
- *     // We want to find the first 100 new orders
- *     //  ... 0 means first page
- *     //  ... page size is 100
- *
- *     PagedList<Order> pagedList
- *       = ebeanServer.find(Order.class)
- *       .where().eq("status", Order.Status.NEW)
- *       .order().asc("id")
- *       .findPagedList(0, 100);
- *
- *     // 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: No total row count required</h4>
  * <pre>{@code
@@ -110,7 +86,7 @@ public interface PagedList<T> {
    * wrapped in the unchecked PersistenceException (which might be preferrable).
    * </p>
    */
-  void loadRowCount();
+  void loadCount();
 
   /**
    * Return the Future row count. You might get this if you wish to cancel the total row count query
@@ -138,7 +114,7 @@ public interface PagedList<T> {
    *
    * }</pre>
    */
-  Future<Integer> getFutureRowCount();
+  Future<Integer> getFutureCount();
 
   /**
    * Return the list of entities for this page.
@@ -170,7 +146,7 @@ public interface PagedList<T> {
    *
    * }</pre>
    */
-  int getTotalRowCount();
+  int getTotalCount();
 
   /**
    * Return the total number of pages based on the page size and total row count.
@@ -186,6 +162,14 @@ public interface PagedList<T> {
    */
   int getPageSize();
 
+  /**
+   * Return the index position of this page (Zero based).
+   * <p>
+   * This is a calculated value based on firstRow/maxRows.
+   * </p>
+   */
+  int getPageIndex();
+
   /**
    * Return true if there is a next page.
    * <p>

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

@@ -13,10 +13,10 @@ import java.util.Set;
  * <p>
  * Example: Create the query using the API.
  * </p>
- * 
+ * <p>
  * <pre>{@code
  *
- * List<Order> orderList = 
+ * List<Order> orderList =
  *   ebeanServer.find(Order.class)
  *     .fetch("customer")
  *     .fetch("details")
@@ -26,46 +26,40 @@ import java.util.Set;
  *     .orderBy("customer.id, id desc")
  *     .setMaxRows(50)
  *     .findList();
- *   
+ *
  * ...
  * }</pre>
- * 
  * <p>
  * Example: The same query using the query language
  * </p>
- * 
  * <pre>{@code
  *
- * String oql = 
- *   	"  find  order "
+ * String oql =
  *   	+" fetch customer "
  *   	+" fetch details "
  *   	+" where customer.name like :custName and orderDate > :minOrderDate "
  *   	+" order by customer.id, id desc "
  *   	+" limit 50 ";
- *   
+ *
  * Query<Order> query = ebeanServer.createQuery(Order.class, oql);
  * query.setParameter("custName", "Rob%");
  * query.setParameter("minOrderDate", lastWeek);
- *   
+ *
  * List<Order> orderList = query.findList();
  * ...
  * }</pre>
- * 
  * <p>
  * Example: Using a named query called "with.cust.and.details"
  * </p>
- * 
  * <pre>{@code
  *
  * Query<Order> query = ebeanServer.createNamedQuery(Order.class,"with.cust.and.details");
  * query.setParameter("custName", "Rob%");
  * query.setParameter("minOrderDate", lastWeek);
- *   
+ *
  * List<Order> orderList = query.findList();
  * ...
  * }</pre>
- * 
  * <h3>AutoTune</h3>
  * <p>
  * Ebean has built in support for "AutoTune". This is a mechanism where a query
@@ -82,7 +76,6 @@ import java.util.Set;
  * to a remote client or where there is some requirement for "Read Consistency"
  * guarantees.
  * </p>
- * 
  * <h3>Query Language</h3>
  * <p>
  * <b>Partial Objects</b>
@@ -101,36 +94,25 @@ import java.util.Set;
  * concurrency checking will occur but only include the fetched properties.
  * Refer to "ALL Properties/Columns" mode of Optimistic Concurrency checking.
  * </p>
- * 
  * <pre>{@code
- * [ find  {bean type} [ ( * | {fetch properties} ) ] ]
- * [ fetch {associated bean} [ ( * | {fetch properties} ) ] ]
+ * [ select [ ( * | {fetch properties} ) ] ]
+ * [ fetch {path} [ ( * | {fetch properties} ) ] ]
  * [ where {predicates} ]
  * [ order by {order by properties} ]
  * [ limit {max rows} [ offset {first row} ] ]
  * }</pre>
- * 
  * <p>
- * <b>FIND</b> <b>{bean type}</b> [ ( <i>*</i> | <i>{fetch properties}</i> ) ]
+ * <b>SELECT</b> [ ( <i>*</i> | <i>{fetch properties}</i> ) ]
  * </p>
  * <p>
- * With the find you specify the type of beans to fetch. You can optionally
- * specify a list of properties to fetch. If you do not specify a list of
- * properties ALL the properties for those beans are fetched.
+ * With the select you can specify a list of properties to fetch.
  * </p>
  * <p>
- * In object graph terms the <em>find</em> clause specifies the type of bean at
- * the root level and the <em>fetch</em> clauses specify the paths of the object
- * graph to populate.
- * </p>
- * <p>
- * <b>FETCH</b> <b>{associated property}</b> [ ( <i>*</i> | <i>{fetch
- * properties}</i> ) ]
+ * <b>FETCH</b> <b>{path}</b> [ ( <i>*</i> | <i>{fetch properties}</i> ) ]
  * </p>
  * <p>
  * With the fetch you specify the associated property to fetch and populate. The
- * associated property is a OneToOnem, ManyToOne, OneToMany or ManyToMany
- * property. When the query is executed Ebean will fetch the associated data.
+ * path is a OneToOne, ManyToOne, OneToMany or ManyToMany property.
  * </p>
  * <p>
  * For fetch of a path we can optionally specify a list of properties to fetch.
@@ -161,52 +143,34 @@ import java.util.Set;
  * </p>
  * <h4>Examples of Ebean's Query Language</h4>
  * <p>
- * Find orders fetching all its properties
- * </p>
- * 
- * <pre>{@code
- * find order
- * }</pre>
- * 
- * <p>
- * Find orders fetching all its properties
- * </p>
- * 
- * <pre>{@code
- * find order (*)
- * }</pre>
- * 
- * <p>
  * Find orders fetching its id, shipDate and status properties. Note that the id
  * property is always fetched even if it is not included in the list of fetch
  * properties.
  * </p>
- * 
  * <pre>{@code
- * find order (shipDate, status)
+ *
+ * select (shipDate, status)
+ *
  * }</pre>
- * 
  * <p>
  * Find orders with a named bind variable (that will need to be bound via
  * {@link Query#setParameter(String, Object)}).
  * </p>
- * 
  * <pre>{@code
- * find order
+ *
  * where customer.name like :custLike
+ *
  * }</pre>
- * 
  * <p>
  * Find orders and also fetch the customer with a named bind parameter. This
  * will fetch and populate both the order and customer objects.
  * </p>
- * 
  * <pre>{@code
- * find  order
+ *
  * fetch customer
  * where customer.id = :custId
+ *
  * }</pre>
- * 
  * <p>
  * Find orders and also fetch the customer, customer shippingAddress, order
  * details and related product. Note that customer and product objects will be
@@ -215,63 +179,16 @@ import java.util.Set;
  * objects (associated with each order detail) will have their id, sku and name
  * populated.
  * </p>
- * 
  * <pre>{@code
- * find  order
+ *
  * fetch customer (name)
  * fetch customer.shippingAddress
  * fetch details
  * fetch details.product (sku, name)
+ *
  * }</pre>
- * 
- * <h3>Early parsing of the Query</h3>
- * <p>
- * When you get a Query object from a named query, the query statement has
- * already been parsed. You can then add to that query (add fetch paths, add to
- * the where clause) or override some of its settings (override the order by
- * clause, first rows, max rows).
- * </p>
- * <p>
- * The thought is that you can use named queries as a 'starting point' and then
- * modify the query to suit specific needs.
- * </p>
- * <h3>Building the Where clause</h3>
- * <p>
- * You can add to the where clause using Expression objects or a simple String.
- * Note that the ExpressionList has methods to add most of the common
- * expressions that you will need.
- * <ul>
- * <li>where(String addToWhereClause)</li>
- * <li>where().add(Expression expression)</li>
- * <li>where().eq(propertyName, value).like(propertyName , value)...</li>
- * </ul>
- * </p>
- * <p>
- * The full WHERE clause is constructed by appending together
- * <li>original query where clause (Named query or query.setQuery(String oql))</li>
- * <li>clauses added via query.where(String addToWhereClause)</li>
- * <li>clauses added by Expression objects</li>
- * </p>
- * <p>
- * The above is the order that these are clauses are appended to give the full
- * WHERE clause.
- * </p>
- * <h3>Design Goal</h3>
- * <p>
- * This query language is NOT designed to be a replacement for SQL. It is
- * designed to be a simple way to describe the "Object Graph" you want Ebean to
- * build for you. Each find/fetch represents a node in that "Object Graph" which
- * makes it easy to define for each node which properties you want to fetch.
- * </p>
- * <p>
- * Once you hit the limits of this language such as wanting aggregate functions
- * (sum, average, min etc) or recursive queries etc you use SQL. Ebean's goal is
- * to make it as easy as possible to use your own SQL to populate entity beans.
- * Refer to {@link RawSql} .
- * </p>
- * 
- * @param <T>
- *          the type of Entity bean this query will fetch.
+ *
+ * @param <T> the type of Entity bean this query will fetch.
  */
 public interface Query<T> {
 
@@ -289,7 +206,7 @@ public interface Query<T> {
    * 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.
+   * 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
@@ -325,7 +242,7 @@ public interface Query<T> {
    * Specify the PersistenceContextScope to use for this query.
    * <p/>
    * When this is not set the 'default' configured on {@link com.avaje.ebean.config.ServerConfig#setPersistenceContextScope(PersistenceContextScope)}
-   * is used - this value defaults to {@link com.avaje.ebean.PersistenceContextScope#TRANSACTION}.
+   * is used - this value defaults to {@link PersistenceContextScope#TRANSACTION}.
    * <p/>
    * Note that the same persistence Context is used for subsequent lazy loading and query join queries.
    * <p/>
@@ -392,14 +309,15 @@ public interface Query<T> {
   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
-   * properties.
+   * Specify the properties to fetch on the root level entity bean in comma delimited format.
    * <p>
-   * You use {@link #fetch(String, String)} to specify specific properties to fetch
+   * The Id property is automatically included in the properties to fetch unless setDistinct(true)
+   * is set on the query.
+   * </p>
+   * <p>
+   * Use {@link #fetch(String, String)} to specify specific properties to fetch
    * on other non-root level paths of the object graph.
    * </p>
-   *
    * <pre>{@code
    *
    * List<Customer> customers =
@@ -412,42 +330,33 @@ public interface Query<T> {
    *
    * }</pre>
    *
-   * @param fetchProperties
-   *          the properties to fetch for this bean (* = all properties).
+   * @param fetchProperties the properties to fetch for this bean (* = all properties).
    */
   Query<T> select(String fetchProperties);
 
   /**
-   * Specify a path to <em>fetch</em> with its specific properties to include
-   * (aka partial object).
+   * Specify a path to fetch eagerly including specific properties.
    * <p>
-   * When you specify a join this means that property (associated bean(s)) will
-   * be fetched and populated. If you specify "*" then all the properties of the
-   * associated bean will be fetched and populated. You can specify a comma
-   * delimited list of the properties of that associated bean which means that
-   * only those properties are fetched and populated resulting in a
-   * "Partial Object" - a bean that only has some of its properties populated.
+   * Ebean will endeavour to fetch this path using a SQL join. If Ebean determines that it can
+   * not use a SQL join (due to maxRows or because it would result in a cartesian product) Ebean
+   * will automatically convert this fetch query into a "query join" - i.e. use fetchQuery().
    * </p>
-   * 
    * <pre>{@code
    *
    * // query orders...
    * List<Order> orders =
-   *     ebeanserver.find(Order.class)
+   *     ebeanServer.find(Order.class)
    *       // fetch the customer...
    *       // ... getting the customers name and phone number
    *       .fetch("customer", "name, phoneNumber")
-   * 
+   *
    *       // ... also fetch the customers billing address (* = all properties)
    *       .fetch("customer.billingAddress", "*")
    *       .findList();
    * }</pre>
-   * 
    * <p>
-   * If columns is null or "*" then all columns/properties for that path are
-   * fetched.
+   * If columns is null or "*" then all columns/properties for that path are fetched.
    * </p>
-   * 
    * <pre>{@code
    *
    * // fetch customers (their id, name and status)
@@ -458,19 +367,66 @@ public interface Query<T> {
    *     .findList();
    *
    * }</pre>
-   * 
-   * @param path
-   *          the path of an associated (1-1,1-M,M-1,M-M) bean.
-   * @param fetchProperties
-   *          properties of the associated bean that you want to include in the
-   *          fetch (* means all properties, null also means all properties).
+   *
+   * @param path            the property path we wish to fetch eagerly.
+   * @param fetchProperties properties of the associated bean that you want to include in the
+   *                        fetch (* means all properties, null also means all properties).
    */
   Query<T> fetch(String path, String fetchProperties);
 
+  /**
+   * Fetch the path and properties using a "query join" (separate SQL query).
+   * <p>
+   * This is the same as:
+   * </p>
+   * <pre>{@code
+   *
+   *  fetch(path, fetchProperties, new FetchConfig().query())
+   *
+   * }</pre>
+   * <p>
+   * This would be used instead of a fetch() when we use a separate SQL query to fetch this
+   * part of the object graph rather than a SQL join.
+   * </p>
+   * <p>
+   * We might typically get a performance benefit when the path to fetch is a OneToMany
+   * or ManyToMany, the 'width' of the 'root bean' is wide and the cardinality of the many
+   * is high.
+   * </p>
+   *
+   * @param path            the property path we wish to fetch eagerly.
+   * @param fetchProperties properties of the associated bean that you want to include in the
+   *                        fetch (* means all properties, null also means all properties).
+   */
+  Query<T> fetchQuery(String path, String fetchProperties);
+
+  /**
+   * Fetch the path and properties lazily (via batch lazy loading).
+   * <p>
+   * This is the same as:
+   * </p>
+   * <pre>{@code
+   *
+   *  fetch(path, fetchProperties, new FetchConfig().lazy())
+   *
+   * }</pre>
+   * <p>
+   * The reason for using fetchLazy() is to either:
+   * </p>
+   * <ul>
+   * <li>Control/tune what is fetched as part of lazy loading</li>
+   * <li>Make use of the L2 cache, build this part of the graph from L2 cache</li>
+   * </ul>
+   *
+   * @param path            the property path we wish to fetch lazily.
+   * @param fetchProperties properties of the associated bean that you want to include in the
+   *                        fetch (* means all properties, null also means all properties).
+   */
+  Query<T> fetchLazy(String path, String fetchProperties);
+
   /**
    * Additionally specify a FetchConfig to use a separate query or lazy loading
    * to load this path.
-   *
    * <pre>{@code
    *
    * // fetch customers (their id, name and status)
@@ -481,13 +437,17 @@ public interface Query<T> {
    *     .findList();
    *
    * }</pre>
+   *
+   * @param path the property path we wish to fetch eagerly.
    */
-  Query<T> fetch(String assocProperty, String fetchProperties, FetchConfig fetchConfig);
+  Query<T> fetch(String path, String fetchProperties, FetchConfig fetchConfig);
 
   /**
-   * Specify a path to load including all its properties.
+   * Specify a path to fetch eagerly including all its properties.
    * <p>
-   * The same as {@link #fetch(String, String)} with the fetchProperties as "*".
+   * Ebean will endeavour to fetch this path using a SQL join. If Ebean determines that it can
+   * not use a SQL join (due to maxRows or because it would result in a cartesian product) Ebean
+   * will automatically convert this fetch query into a "query join" - i.e. use fetchQuery().
    * </p>
    * <pre>{@code
    *
@@ -500,16 +460,59 @@ public interface Query<T> {
    *
    * }</pre>
    *
-   * @param path
-   *          the property of an associated (1-1,1-M,M-1,M-M) bean.
+   * @param path the property path we wish to fetch eagerly.
    */
   Query<T> fetch(String path);
 
+  /**
+   * Fetch the path eagerly using a "query join" (separate SQL query).
+   * <p>
+   * This is the same as:
+   * </p>
+   * <pre>{@code
+   *
+   *  fetch(path, new FetchConfig().query())
+   *
+   * }</pre>
+   * <p>
+   * This would be used instead of a fetch() when we use a separate SQL query to fetch this
+   * part of the object graph rather than a SQL join.
+   * </p>
+   * <p>
+   * We might typically get a performance benefit when the path to fetch is a OneToMany
+   * or ManyToMany, the 'width' of the 'root bean' is wide and the cardinality of the many
+   * is high.
+   * </p>
+   *
+   * @param path the property path we wish to fetch eagerly
+   */
+  Query<T> fetchQuery(String path);
+
+  /**
+   * Fetch the path lazily (via batch lazy loading).
+   * <p>
+   * This is the same as:
+   * </p>
+   * <pre>{@code
+   *
+   *  fetch(path, new FetchConfig().lazy())
+   *
+   * }</pre>
+   * <p>
+   * The reason for using fetchLazy() is to either:
+   * </p>
+   * <ul>
+   * <li>Control/tune what is fetched as part of lazy loading</li>
+   * <li>Make use of the L2 cache, build this part of the graph from L2 cache</li>
+   * </ul>
+   *
+   * @param path the property path we wish to fetch lazily.
+   */
+  Query<T> fetchLazy(String path);
+
   /**
    * Additionally specify a JoinConfig to specify a "query join" and or define
    * the lazy loading query.
-   *
-   *
    * <pre>{@code
    *
    * // fetch customers (their id, name and status)
@@ -536,10 +539,50 @@ public interface Query<T> {
    * <p>
    * This query will execute against the EbeanServer that was used to create it.
    * </p>
-   * 
+   *
    * @see EbeanServer#findIds(Query, Transaction)
    */
-  List<Object> findIds();
+  <A> List<A> findIds();
+
+  /**
+   * Execute the query iterating over the results.
+   * <p>
+   * Note that findIterate (and findEach and findEachWhile) uses a "per graph"
+   * persistence context scope and adjusts jdbc fetch buffer size for large
+   * queries. As such it is better to use findList for small queries.
+   * </p>
+   * <p>
+   * Remember that with {@link QueryIterator} you must call {@link QueryIterator#close()}
+   * when you have finished iterating the results (typically in a finally block).
+   * </p>
+   * <p>
+   * findEach() and findEachWhile() are preferred to findIterate() as they ensure
+   * the jdbc statement and resultSet are closed at the end of the iteration.
+   * </p>
+   * <p>
+   * This query will execute against the EbeanServer that was used to create it.
+   * </p>
+   * <pre>{@code
+   *
+   *  Query<Customer> query =
+   *    ebeanServer.find(Customer.class)
+   *     .where().eq("status", Status.NEW)
+   *     .order().asc("id");
+   *
+   *  QueryIterator<Customer> it = query.findIterate();
+   *  try {
+   *    while (it.hasNext()) {
+   *      Customer customer = it.next();
+   *      // do something with customer ...
+   *    }
+   *  } finally {
+   *    // close the underlying resources
+   *    it.close();
+   *  }
+   *
+   * }</pre>
+   */
+  QueryIterator<T> findIterate();
 
   /**
    * Execute the query processing the beans one at a time.
@@ -549,6 +592,11 @@ public interface Query<T> {
    * (unlike #findList #findSet etc)
    * </p>
    * <p>
+   * Note that findEach (and findEachWhile and findIterate) uses a "per graph"
+   * persistence context scope and adjusts jdbc fetch buffer size for large
+   * queries. As such it is better to use findList for small queries.
+   * </p>
+   * <p>
    * Note that internally Ebean can inform the JDBC driver that it is expecting larger
    * resultSet and specifically for MySQL this hint is required to stop it's JDBC driver
    * from buffering the entire resultSet. As such, for smaller resultSets findList() is
@@ -564,7 +612,6 @@ public interface Query<T> {
    * iterator uses the QueryEachConsumer (SAM) interface which is better suited to use
    * with Java8 closures.
    * </p>
-   *
    * <pre>{@code
    *
    *  ebeanServer.find(Customer.class)
@@ -578,8 +625,7 @@ public interface Query<T> {
    *
    * }</pre>
    *
-   * @param consumer
-   *          the consumer used to process the queried beans.
+   * @param consumer the consumer used to process the queried beans.
    */
   void findEach(QueryEachConsumer<T> consumer);
 
@@ -587,12 +633,15 @@ public interface Query<T> {
    * Execute the query using callbacks to a visitor to process the resulting
    * beans one at a time.
    * <p>
+   * Note that findEachWhile (and findEach and findIterate) uses a "per graph"
+   * persistence context scope and adjusts jdbc fetch buffer size for large
+   * queries. As such it is better to use findList for small queries.
+   * </p>
+   * <p>
    * This method is functionally equivalent to findIterate() but instead of using an
    * iterator uses the QueryEachWhileConsumer (SAM) interface which is better suited to use
    * with Java8 closures.
    * </p>
-
-   *
    * <pre>{@code
    *
    *  ebeanServer.find(Customer.class)
@@ -611,8 +660,7 @@ public interface Query<T> {
    *
    * }</pre>
    *
-   * @param consumer
-   *          the consumer used to process the queried beans.
+   * @param consumer the consumer used to process the queried beans.
    */
   void findEachWhile(QueryEachWhileConsumer<T> consumer);
 
@@ -621,7 +669,6 @@ public interface Query<T> {
    * <p>
    * This query will execute against the EbeanServer that was used to create it.
    * </p>
-   *
    * <pre>{@code
    *
    * List<Customer> customers =
@@ -640,7 +687,6 @@ public interface Query<T> {
    * <p>
    * This query will execute against the EbeanServer that was used to create it.
    * </p>
-   *
    * <pre>{@code
    *
    * Set<Customer> customers =
@@ -663,24 +709,50 @@ public interface Query<T> {
    * You can use setMapKey() so specify the property values to be used as keys
    * on the map. If one is not specified then the id property is used.
    * </p>
-   * 
    * <pre>{@code
    *
-   * Map<?, Product> map =
+   * Map<String, Product> map =
    *   ebeanServer.find(Product.class)
    *     .setMapKey("sku")
    *     .findMap();
    *
    * }</pre>
-   * 
+   *
    * @see EbeanServer#findMap(Query, Transaction)
    */
-  Map<?, T> findMap();
+  <K> Map<K, T> findMap();
 
   /**
-   * Return a typed map specifying the key property and type.
+   * Execute the query returning a list of values for a single property.
+   *
+   * <h3>Example 1:</h3>
+   * <pre>{@code
+   *
+   *  List<String> names =
+   *    Ebean.find(Customer.class)
+   *      .select("name")
+   *      .orderBy().asc("name")
+   *      .findSingleAttributeList();
+   *
+   * }</pre>
+   *
+   * <h3>Example 2:</h3>
+   * <pre>{@code
+   *
+   *  List<String> names =
+   *    Ebean.find(Customer.class)
+   *      .setDistinct(true)
+   *      .select("name")
+   *      .where().eq("status", Customer.Status.NEW)
+   *      .orderBy().asc("name")
+   *      .setMaxRows(100)
+   *      .findSingleAttributeList();
+   *
+   * }</pre>
+   *
+   * @return the list of values for the selected property
    */
-  <K> Map<K, T> findMap(String keyProperty, Class<K> keyType);
+  <A> List<A> findSingleAttributeList();
 
   /**
    * Execute the query returning either a single bean or null (if no matching
@@ -693,7 +765,6 @@ public interface Query<T> {
    * This is useful when your predicates dictate that your query should only
    * return 0 or 1 results.
    * </p>
-   * 
    * <pre>{@code
    *
    * // assuming the sku of products is unique...
@@ -703,16 +774,14 @@ public interface Query<T> {
    *         .findUnique();
    * ...
    * }</pre>
-   * 
    * <p>
    * It is also useful with finding objects by their id when you want to specify
    * further join information.
    * </p>
-   * 
    * <pre>{@code
    *
    * // Fetch order 1 and additionally fetch join its order details...
-   * Order order = 
+   * Order order =
    *     ebeanServer.find(Order.class)
    *       .setId(1)
    *       .fetch("details")
@@ -731,13 +800,13 @@ public interface Query<T> {
   /**
    * 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.
+   * 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.
+   * 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();
@@ -745,8 +814,8 @@ public interface Query<T> {
   /**
    * 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.
+   * 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);
@@ -774,7 +843,7 @@ public interface Query<T> {
    * This is the number of 'top level' or 'root level' entities.
    * </p>
    */
-  int findRowCount();
+  int findCount();
 
   /**
    * Execute find row count query in a background thread.
@@ -783,10 +852,10 @@ public interface Query<T> {
    * execution status (isDone etc) and get the value (with or without a
    * timeout).
    * </p>
-   * 
+   *
    * @return a Future object for the row count query
    */
-  FutureRowCount<T> findFutureRowCount();
+  FutureRowCount<T> findFutureCount();
 
   /**
    * Execute find Id's query in a background thread.
@@ -795,7 +864,7 @@ public interface Query<T> {
    * execution status (isDone etc) and get the value (with or without a
    * timeout).
    * </p>
-   * 
+   *
    * @return a Future object for the list of Id's
    */
   FutureIds<T> findFutureIds();
@@ -821,7 +890,6 @@ public interface Query<T> {
    * 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)
@@ -843,24 +911,21 @@ public interface Query<T> {
 
   /**
    * Set a named bind parameter. Named parameters have a colon to prefix the name.
-   * 
    * <pre>{@code
    *
    * // a query with a named parameter
    * String oql = "find order where status = :orderStatus";
-   * 
+   *
    * Query<Order> query = ebeanServer.find(Order.class, oql);
-   * 
+   *
    * // bind the named parameter
    * query.bind("orderStatus", OrderStatus.NEW);
    * List<Order> list = query.findList();
    *
    * }</pre>
-   * 
-   * @param name
-   *          the parameter name
-   * @param value
-   *          the parameter value
+   *
+   * @param name  the parameter name
+   * @param value the parameter value
    */
   Query<T> setParameter(String name, Object value);
 
@@ -868,25 +933,22 @@ public interface Query<T> {
    * Set an ordered bind parameter according to its position. Note that the
    * position starts at 1 to be consistent with JDBC PreparedStatement. You need
    * to set a parameter value for each ? you have in the query.
-   * 
    * <pre>{@code
    *
    * // a query with a positioned parameter
    * String oql = "where status = ? order by id desc";
-   * 
+   *
    * Query<Order> query = ebeanServer.createQuery(Order.class, oql);
-   * 
+   *
    * // bind the parameter
    * query.setParameter(1, OrderStatus.NEW);
-   * 
+   *
    * List<Order> list = query.findList();
    *
    * }</pre>
-   * 
-   * @param position
-   *          the parameter bind position starting from 1 (not 0)
-   * @param value
-   *          the parameter bind value.
+   *
+   * @param position the parameter bind position starting from 1 (not 0)
+   * @param value    the parameter bind value.
    */
   Query<T> setParameter(int position, Object value);
 
@@ -896,7 +958,6 @@ public interface Query<T> {
    * You can use this to have further control over the query. For example adding
    * fetch joins.
    * </p>
-   * 
    * <pre>{@code
    *
    * Order order =
@@ -919,10 +980,9 @@ public interface Query<T> {
 
   /**
    * Add a single Expression to the where clause returning the query.
-   * 
    * <pre>{@code
    *
-   * List<Order> newOrders = 
+   * List<Order> newOrders =
    *     ebeanServer.find(Order.class)
    * 		.where().eq("status", Order.NEW)
    * 		.findList();
@@ -936,7 +996,6 @@ public interface Query<T> {
    * Add Expressions to the where clause with the ability to chain on the
    * ExpressionList. You can use this for adding multiple expressions to the
    * where clause.
-   * 
    * <pre>{@code
    *
    * List<Order> orders =
@@ -947,9 +1006,9 @@ public interface Query<T> {
    *     .findList();
    *
    * }</pre>
-   * 
-   * @see Expr
+   *
    * @return The ExpressionList for adding expressions to.
+   * @see Expr
    */
   ExpressionList<T> where();
 
@@ -984,9 +1043,8 @@ public interface Query<T> {
    * each customer you only want to get the new orders they placed since last
    * week. In this case you can use filterMany() to filter the orders.
    * </p>
-   * 
    * <pre>{@code
-   * 
+   *
    * List<Customer> list =
    *     ebeanServer.find(Customer.class)
    *     // .fetch("orders", new FetchConfig().lazy())
@@ -995,20 +1053,17 @@ public interface Query<T> {
    *     .where().ilike("name", "rob%")
    *     .filterMany("orders").eq("status", Order.Status.NEW).gt("orderDate", lastWeek)
    *     .findList();
-   * 
+   *
    * }</pre>
-   * 
    * <p>
    * Please note you have to be careful that you add expressions to the correct
    * expression list - as there is one for the 'root level' and one for each
    * filterMany that you have.
    * </p>
-   * 
-   * @param propertyName
-   *          the name of the many property that you want to have a filter on.
-   * 
+   *
+   * @param propertyName the name of the many property that you want to have a filter on.
    * @return the expression list that you add filter expressions for the many
-   *         to.
+   * to.
    */
   ExpressionList<T> filterMany(String propertyName);
 
@@ -1021,9 +1076,9 @@ public interface Query<T> {
    * Note that this returns the ExpressionList (so you can add multiple
    * expressions to the query in a fluent API way).
    * </p>
-   * 
-   * @see Expr
+   *
    * @return The ExpressionList for adding more expressions to.
+   * @see Expr
    */
   ExpressionList<T> having();
 
@@ -1037,9 +1092,8 @@ public interface Query<T> {
    * than the ExpressionList. This is useful when you want to further specify
    * something on the query.
    * </p>
-   * 
-   * @param addExpressionToHaving
-   *          the expression to add to the having clause.
+   *
+   * @param addExpressionToHaving the expression to add to the having clause.
    * @return the Query object
    */
   Query<T> having(Expression addExpressionToHaving);
@@ -1151,9 +1205,8 @@ public interface Query<T> {
 
   /**
    * Set the maximum number of rows to return in the query.
-   * 
-   * @param maxRows
-   *          the maximum number of rows to return in the query.
+   *
+   * @param maxRows the maximum number of rows to return in the query.
    */
   Query<T> setMaxRows(int maxRows);
 
@@ -1162,11 +1215,10 @@ public interface Query<T> {
    * <p>
    * If no property is set then the id property is used.
    * </p>
-   * 
    * <pre>{@code
    *
    * // Assuming sku is unique for products...
-   *    
+   *
    * Map<?,Product> productMap =
    *     ebeanServer.find(Product.class)
    *     // use sku for keys...
@@ -1174,9 +1226,8 @@ public interface Query<T> {
    *     .findMap();
    *
    * }</pre>
-   * 
-   * @param mapKey
-   *          the property to use as keys for a map.
+   *
+   * @param mapKey the property to use as keys for a map.
    */
   Query<T> setMapKey(String mapKey);
 
@@ -1203,7 +1254,7 @@ public interface Query<T> {
   /**
    * Set to true if this query should execute against the doc store.
    * <p>
-   *   When setting this you may also consider disabling lazy loading.
+   * When setting this you may also consider disabling lazy loading.
    * </p>
    */
   Query<T> setUseDocStore(boolean useDocStore);
@@ -1226,9 +1277,8 @@ public interface Query<T> {
    * preparedStatement. If the timeout occurs an exception will be thrown - this
    * will be a SQLException wrapped up in a PersistenceException.
    * </p>
-   * 
-   * @param secs
-   *          the query timeout limit in seconds. Zero means there is no limit.
+   *
+   * @param secs the query timeout limit in seconds. Zero means there is no limit.
    */
   Query<T> setTimeout(int secs);
 
@@ -1238,6 +1288,16 @@ public interface Query<T> {
    * Gives the JDBC driver a hint as to the number of rows that should be
    * fetched from the database when more rows are needed for ResultSet.
    * </p>
+   * <p>
+   * Note that internally findEach and findEachWhile will set the fetch size
+   * if it has not already as these queries expect to process a lot of rows.
+   * If we didn't then Postgres and MySql for example would eagerly pull back
+   * all the row data and potentially consume a lot of memory in the process.
+   * </p>
+   * <p>
+   * As findEach and findEachWhile automatically set the fetch size we don't have
+   * to do so generally but we might still wish to for tuning a specific use case.
+   * </p>
    */
   Query<T> setBufferFetchSizeHint(int fetchSize);
 
@@ -1260,7 +1320,7 @@ public interface Query<T> {
    * Return true if this query has forUpdate set.
    */
   boolean isForUpdate();
-  
+
   /**
    * Set root table alias.
    */
@@ -1274,7 +1334,7 @@ public interface Query<T> {
   /**
    * Set true if you want to disable lazy loading.
    * <p>
-   *   That is, once the object graph is returned further lazy loading is disabled.
+   * That is, once the object graph is returned further lazy loading is disabled.
    * </p>
    */
   Query<T> setDisableLazyLoading(boolean disableLazyLoading);

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

@@ -0,0 +1,67 @@
+package com.avaje.ebean;
+
+import java.util.Iterator;
+
+/**
+ * Used to provide iteration over query results.
+ * <p>
+ * This can be used when you want to process a very large number of results and
+ * means that you don't have to hold all the results in memory at once (unlike
+ * findList(), findSet() etc where all the beans are held in the List or Set
+ * etc).
+ * </p>
+ * <p>
+ * Note that findIterate (and findEach and findEachWhile) uses a "per graph"
+ * persistence context scope and adjusts jdbc fetch buffer size for large
+ * queries. As such it is better to use findList for small queries.
+ * </p>
+ * <p>
+ * Remember that with {@link QueryIterator} you must call {@link QueryIterator#close()}
+ * when you have finished iterating the results (typically in a finally block).
+ * </p>
+ *
+ * <pre>{@code
+ * 
+ *  Query<Customer> query = server.find(Customer.class)
+ *     .where().gt("id", 0)
+ *     .orderBy("id")
+ *     .setMaxRows(2);
+ *
+ *  QueryIterator<Customer> it = query.findIterate();
+ *  try {
+ *    while (it.hasNext()) {
+ *      Customer customer = it.next();
+ *      // do something with customer ...
+ *    }
+ *  } finally {
+ *    // close the underlying resources
+ *    it.close();
+ *  }
+ *
+ * }</pre>
+ * 
+ * @param <T>
+ *          the type of entity bean in the iteration
+ */
+public interface QueryIterator<T> extends Iterator<T>, java.io.Closeable {
+
+  /**
+   * Returns <tt>true</tt> if the iteration has more elements.
+   */
+  boolean hasNext();
+
+  /**
+   * Returns the next element in the iteration.
+   */
+  T next();
+
+  /**
+   * Remove is not allowed.
+   */
+  void remove();
+
+  /**
+   * Close the underlying resources held by this iterator.
+   */
+  void close();
+}

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

@@ -606,9 +606,9 @@ public final class RawSql implements Serializable {
         }
       }
 
-      private static String derivePropertyName(String dbAlias, String dbColumn) {
+      protected static String derivePropertyName(String dbAlias, String dbColumn) {
         if (dbAlias != null) {
-          return dbAlias;
+          return CamelCaseHelper.toCamelFromUnderscore(dbAlias);
         }
         int dotPos = dbColumn.indexOf('.');
         if (dotPos > -1) {

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

@@ -2,8 +2,6 @@ package com.avaje.ebean;
 
 import java.io.Serializable;
 import java.util.List;
-import java.util.Map;
-import java.util.Set;
 
 /**
  * Query object for performing native SQL queries that return SqlRow's.

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

@@ -26,7 +26,7 @@ package com.avaje.ebean;
  * 
  * int modifiedCount = Ebean.execute(update);
  * 
- * String msg = "There where " + modifiedCount + "rows updated"
+ * String msg = "There were " + modifiedCount + " rows updated"
  * </pre>
  * 
  * @see Update
@@ -117,8 +117,7 @@ public interface SqlUpdate {
   SqlUpdate setParameter(int position, Object value);
 
   /**
-   * Set a null parameter via its index position. Exactly the same as
-   * {@link #setNull(int, int)}.
+   * Set a null parameter via its index position.
    */
   SqlUpdate setNull(int position, int jdbcType);
 
@@ -143,4 +142,4 @@ public interface SqlUpdate {
    */
   SqlUpdate setNullParameter(String name, int jdbcType);
 
-}
+}

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

@@ -54,13 +54,52 @@ public interface Transaction extends Closeable {
    */
   void setReadOnly(boolean readOnly);
 
+  /**
+   * Commits the transaction at this point with the expectation that another
+   * commit (or rollback or end) will occur later to complete the transaction.
+   * <p>
+   * This is similar to commit() but leaves the transaction "Active".
+   * </p>
+   * <h3>Functions/h3>
+   * <ul>
+   *   <li>Flush the JDBC batch buffer</li>
+   *   <li>Call commit on the underlying JDBC connection</li>
+   *   <li>Trigger any registered TransactionCallbacks</li>
+   *   <li>Perform post-commit processing updating L2 cache, ElasticSearch etc</li>
+   * </ul>
+   */
+  void commitAndContinue() throws RollbackException;
+
   /**
    * Commit the transaction.
+   * <p>
+   * This performs commit and completes the transaction closing underlying resources and
+   * marking the transaction as "In active".
+   * </p>
+   * <h3>Functions/h3>
+   * <ul>
+   *   <li>Flush the JDBC batch buffer</li>
+   *   <li>Call commit on the underlying JDBC connection</li>
+   *   <li>Trigger any registered TransactionCallbacks</li>
+   *   <li>Perform post-commit processing updating L2 cache, ElasticSearch etc</li>
+   *   <li>Close any underlying resources, closing the underlying JDBC connection</li>
+   *   <li>Mark the transaction as "Inactive"</li>
+   * </ul>
    */
   void commit() throws RollbackException;
 
   /**
    * Rollback the transaction.
+   * <p>
+   * This performs rollback, closes underlying resources and marks the transaction as "In active".
+   * </p>
+   * <h3>Functions/h3>
+   * <ul>
+   *   <li>Call rollback on the underlying JDBC connection</li>
+   *   <li>Trigger any registered TransactionCallbacks</li>
+   *   <li>Close any underlying resources, closing the underlying JDBC connection</li>
+   *   <li>Mark the transaction as "Inactive"</li>
+   * </ul>
    */
   void rollback() throws PersistenceException;
 
@@ -74,6 +113,16 @@ public interface Transaction extends Closeable {
    */
   void rollback(Throwable e) throws PersistenceException;
 
+  /**
+   * Mark the transaction for rollback only.
+   */
+  void setRollbackOnly();
+
+  /**
+   * Return true if the transaction is marked as rollback only.
+   */
+  boolean isRollbackOnly();
+
   /**
    * If the transaction is active then perform rollback. Otherwise do nothing.
    */
@@ -417,9 +466,8 @@ public interface Transaction extends Closeable {
 
   /**
    * Add an arbitrary user object to the transaction. The objects added have no
-   * impact on any internals of ebena and are solely meant as a convenient
-   * method push user information to e.g. the
-   * {@link com.avaje.ebean.event.TransactionEventListener}.
+   * impact on any internals of ebean and are solely meant as a convenient
+   * method push user information (although somewhat replaced by TransactionCallback).
    */
   void putUserObject(String name, Object value);
 

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

@@ -16,7 +16,7 @@ import java.util.ArrayList;
  * This object is used internally with the enhancement of a method with
  * Transactional annotation.
  * </p>
- * 
+ *
  * @see TxCallable
  * @see TxRunnable
  * @see Ebean#execute(TxScope, TxCallable)
@@ -44,27 +44,6 @@ public final class TxScope {
 
   ArrayList<Class<? extends Throwable>> noRollbackFor;
 
-  /**
-   * Return true if PersistBatch has been set.
-   */
-  public boolean isBatchSet() {
-    return batch != null && batch != PersistBatch.INHERIT;
-  }
-
-  /**
-   * Return true if batch on cascade has been set.
-   */
-  public boolean isBatchOnCascadeSet() {
-    return batchOnCascade != null && batchOnCascade != PersistBatch.INHERIT;
-  }
-
-  /**
-   * Return true if batch size has been set.
-   */
-  public boolean isBatchSizeSet() {
-    return batchSize > 0;
-  }
-
   /**
    * Helper method to create a TxScope with REQUIRES.
    */
@@ -130,6 +109,44 @@ public final class TxScope {
         + "] rollbackFor[" + rollbackFor + "] noRollbackFor[" + noRollbackFor + "]";
   }
 
+  /**
+   * Return true if PersistBatch has been set.
+   */
+  public boolean isBatchSet() {
+    return batch != null && batch != PersistBatch.INHERIT;
+  }
+
+  /**
+   * Return true if batch on cascade has been set.
+   */
+  public boolean isBatchOnCascadeSet() {
+    return batchOnCascade != null && batchOnCascade != PersistBatch.INHERIT;
+  }
+
+  /**
+   * Return true if batch size has been set.
+   */
+  public boolean isBatchSizeSet() {
+    return batchSize > 0;
+  }
+
+  /**
+   * Check for batchSize being set without batch mode and use this to imply PersistBatch.ALL.
+   */
+  public void checkBatchMode() {
+    if (batchSize > 0 && notSet(batch) && notSet(batchOnCascade)) {
+      // Use setting the batchSize as implying PersistBatch.ALL for @Transactional
+      batch = PersistBatch.ALL;
+    }
+  }
+
+  /**
+   * Return true if the mode is considered not set.
+   */
+  private boolean notSet(PersistBatch batchMode) {
+    return batchMode == null || batchMode == PersistBatch.INHERIT;
+  }
+
   /**
    * Return the transaction type.
    */

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

@@ -1,17 +1,19 @@
 package com.avaje.ebean.annotation;
 
 import java.lang.annotation.ElementType;
+import java.lang.annotation.Repeatable;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 /**
- * An annotation for declaring an index on a single column.
+ * An annotation for declaring an index.
  *
  * @author rvbiljouw
  */
 @Target({ElementType.TYPE, ElementType.FIELD})
 @Retention(RetentionPolicy.RUNTIME)
+@Repeatable(Indices.class)
 public @interface Index {
 
   /**
@@ -27,6 +29,9 @@ public @interface Index {
   /**
    * When placed on the class (rather than field) you can specify the columns
    * to include in the index in order.
+   * 
+   * Wnen placed on a field, and columnNames are specified, the field-column has to be included.
+   * You can use "${fa}" for alias
    */
   String[] columnNames() default {};
 

src/main/java/com/avaje/ebean/annotation/Indices.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;
+/**
+ * An annotation for declaring multiple indices at class or field level.
+ * 
+ * @author Roland Praml, FOCONIS AG
+ */
+@Target({ElementType.TYPE, ElementType.FIELD})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Indices {
+
+  /**
+   * Array with {@link Index} definitions.
+   */
+  Index[] value() default {};
+}

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

@@ -31,6 +31,11 @@ public interface BeanCollection<E> extends Serializable {
     ALL
   }
 
+  /**
+   * Set the disableLazyLoad state.
+   */
+  void setDisableLazyLoad(boolean disableLazyLoad);
+
   /**
    * Load bean from another collection.
    */

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

@@ -39,6 +39,8 @@ public final class EntityBeanIntercept implements Serializable {
 
   private transient BeanLoader beanLoader;
 
+  private transient PreGetterCallback preGetterCallback;
+
   private String ebeanServerName;
 
   /**
@@ -186,6 +188,21 @@ public final class EntityBeanIntercept implements Serializable {
     return embeddedOwnerIndex;
   }
 
+  /**
+   * Clear the getter callback.
+   */
+  public void clearGetterCallback() {
+    this.preGetterCallback = null;
+  }
+
+  /**
+   * Register the callback to be triggered when getter is called.
+   * This is used primarily to automatically flush the JDBC batch.
+   */
+  public void registerGetterCallback(PreGetterCallback getterCallback) {
+    this.preGetterCallback = getterCallback;
+  }
+
   /**
    * Set the embedded beans owning bean.
    */
@@ -325,6 +342,13 @@ public final class EntityBeanIntercept implements Serializable {
     return state == STATE_LOADED;
   }
 
+  /**
+   * Set the bean into NEW state.
+   */
+  public void setNew() {
+    this.state = STATE_NEW;
+  }
+
   /**
    * Set the loaded state to true.
    * <p>
@@ -832,19 +856,31 @@ public final class EntityBeanIntercept implements Serializable {
   public void initialisedMany(int propertyIndex) {
     loadedProps[propertyIndex] = true;
   }
-  
+
+  private final void preGetterCallback() {
+    if (preGetterCallback != null) {
+      preGetterCallback.preGetterTrigger();
+    }
+  }
+
+  /**
+   * Called prior to Id property getter.
+   */
+  public void preGetId() {
+    preGetterCallback();
+  }
+
   /**
    * Method that is called prior to a getter method on the actual entity.
    */
   public void preGetter(int propertyIndex) {
+    preGetterCallback();
     if (state == STATE_NEW || disableLazyLoad) {
       return;
     }
-    
     if (!isLoadedProperty(propertyIndex)) {
       loadBean(propertyIndex);
     }
-
     if (nodeUsageCollector != null) {
       nodeUsageCollector.addUsed(getProperty(propertyIndex));
     }

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

@@ -0,0 +1,13 @@
+package com.avaje.ebean.bean;
+
+/**
+ * A callback that can be registered to fire on getter method calls.
+ * It's primary purpose is to automatically flush JDBC batch buffer.
+ */
+public interface PreGetterCallback {
+
+  /**
+   * Trigger the callback.
+   */
+  void preGetterTrigger();
+}

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

@@ -20,6 +20,8 @@ public abstract class AbstractBeanCollection<E> implements BeanCollection<E> {
 
   protected boolean readOnly;
 
+  protected boolean disableLazyLoad;
+
   /**
    * The EbeanServer this is associated with. (used for lazy fetch).
    */
@@ -84,6 +86,11 @@ public abstract class AbstractBeanCollection<E> implements BeanCollection<E> {
     this.filterMany = filterMany;
   }
 
+  @Override
+  public void setDisableLazyLoad(boolean disableLazyLoad) {
+    this.disableLazyLoad = disableLazyLoad;
+  }
+
   protected void lazyLoadCollection(boolean onlyIds) {
     if (loader == null) {
       loader = (BeanCollectionLoader) Ebean.getServer(ebeanServerName);

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

@@ -102,7 +102,7 @@ public final class BeanList<E> extends AbstractBeanCollection<E> implements List
   private void initClear() {
     synchronized (this) {
       if (list == null) {
-        if (modifyListening) {
+        if (!disableLazyLoad && modifyListening) {
           lazyLoadCollection(true);
         } else {
           list = new ArrayList<E>();
@@ -114,7 +114,11 @@ public final class BeanList<E> extends AbstractBeanCollection<E> implements List
   private void init() {
     synchronized (this) {
       if (list == null) {
-        lazyLoadCollection(false);
+        if (disableLazyLoad) {
+          list = new ArrayList<E>();
+        } else {
+          lazyLoadCollection(false);
+        }
       }
     }
   }

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

@@ -0,0 +1,54 @@
+package com.avaje.ebean.config;
+
+import com.avaje.ebean.config.dbplatform.DbType;
+
+/**
+ * Custom mappings for DB types that override the default.
+ *
+ * @see ServerConfig#addCustomMapping(DbType, String)
+ */
+public class CustomDbTypeMapping {
+
+  protected final DbType type;
+
+  protected final String columnDefinition;
+
+  protected final Platform platform;
+
+  /**
+   * Create a mapping.
+   */
+  public CustomDbTypeMapping(DbType type, String columnDefinition, Platform platform) {
+    this.type = type;
+    this.columnDefinition = columnDefinition;
+    this.platform = platform;
+  }
+
+  /**
+   * Create a mapping that should apply to all the database platforms.
+   */
+  public CustomDbTypeMapping(DbType type, String columnDefinition) {
+    this(type, columnDefinition, null);
+  }
+
+  /**
+   * Return the DB type the mapping applies to.
+   */
+  public DbType getType() {
+    return type;
+  }
+
+  /**
+   * Return the DB column definition to use.
+   */
+  public String getColumnDefinition() {
+    return columnDefinition;
+  }
+
+  /**
+   * Return the platform this mapping should apply to. Null means it applied to all platforms.
+   */
+  public Platform getPlatform() {
+    return platform;
+  }
+}

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

@@ -1,7 +1,6 @@
 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.avaje.dbmigration.MigrationConfig;
 import org.avaje.dbmigration.MigrationRunner;
@@ -20,7 +19,7 @@ public class DbMigrationConfig {
   /**
    * The database platform to generate migration DDL for.
    */
-  protected DbPlatformName platform;
+  protected Platform platform;
 
   /**
    * Set to true if the DB migration should be generated on server start.
@@ -112,14 +111,14 @@ public class DbMigrationConfig {
    * We typically need to explicitly specify this as migration can often be generated
    * when running against H2.
    */
-  public DbPlatformName getPlatform() {
+  public Platform getPlatform() {
     return platform;
   }
 
   /**
    * Set the DB platform to generate migration DDL for.
    */
-  public void setPlatform(DbPlatformName platform) {
+  public void setPlatform(Platform platform) {
     this.platform = platform;
   }
 
@@ -366,7 +365,7 @@ public class DbMigrationConfig {
     includeGeneratedFileComment = properties.getBoolean("migration.includeGeneratedFileComment", includeGeneratedFileComment);
     generatePendingDrop = properties.get("migration.generatePendingDrop", generatePendingDrop);
 
-    platform = properties.getEnum(DbPlatformName.class, "migration.platform", platform);
+    platform = properties.getEnum(Platform.class, "migration.platform", platform);
 
     generate = properties.getBoolean("migration.generate", generate);
     version = properties.get("migration.version", version);

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

@@ -1,9 +1,9 @@
-package com.avaje.ebean.config.dbplatform;
+package com.avaje.ebean.config;
 
 /**
  * Built in supported platforms.
  */
-public enum DbPlatformName {
+public enum Platform {
 
   /**
    * Generic base platform configured via properties or code.

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

@@ -7,14 +7,15 @@ import com.avaje.ebean.cache.ServerCacheManager;
 import com.avaje.ebean.cache.ServerCachePlugin;
 import com.avaje.ebean.config.dbplatform.DatabasePlatform;
 import com.avaje.ebean.config.dbplatform.DbEncrypt;
+import com.avaje.ebean.config.dbplatform.DbType;
 import com.avaje.ebean.event.BeanFindController;
 import com.avaje.ebean.event.BeanPersistController;
 import com.avaje.ebean.event.BeanPersistListener;
+import com.avaje.ebean.event.BeanPostConstructListener;
 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;
@@ -84,6 +85,8 @@ public class ServerConfig {
 
   private ContainerConfig containerConfig;
 
+  private List<CustomDbTypeMapping> customDbTypeMappings = new ArrayList<CustomDbTypeMapping>();
+
   /**
    * The underlying properties that were used during configuration.
    */
@@ -163,6 +166,17 @@ public class ServerConfig {
    */
   private int databaseSequenceBatchSize = 20;
 
+  /**
+   * JDBC fetchSize hint when using findList.  Defaults to 0 leaving it up to the JDBC driver.
+   */
+  private int jdbcFetchSizeFindList;
+
+  /**
+   * JDBC fetchSize hint when using findEach/findEachWhile.  Defaults to 100. Note that this does
+   * not apply to MySql as that gets special treatment (forward only etc).
+   */
+  private int jdbcFetchSizeFindEach = 100;
+
   /**
    * 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.
@@ -187,9 +201,11 @@ public class ServerConfig {
   private PersistBatch persistBatch = PersistBatch.NONE;
 
   /**
-   * Use for per request batch mode.
+   * Use for cascade persist JDBC batch mode. INHERIT means use the platform default
+   * which is ALL except for SQL Server where it is NONE (as getGeneratedKeys isn't
+   * supported on SQL Server with JDBC batch).
    */
-  private PersistBatch persistBatchOnCascade = PersistBatch.NONE;
+  private PersistBatch persistBatchOnCascade = PersistBatch.INHERIT;
 
   private int persistBatchSize = 20;
 
@@ -307,18 +323,18 @@ public class ServerConfig {
   /**
    * Setting to indicate if UUID should be stored as binary(16) or varchar(40) or native DB type (for H2 and Postgres).
    */
-  private DbUuid dbUuid = DbUuid.AUTO;
+  private DbUuid dbUuid = DbUuid.AUTO_VARCHAR;
 
 
   private List<IdGenerator> idGenerators = new ArrayList<IdGenerator>();
   private List<BeanFindController> findControllers = new ArrayList<BeanFindController>();
   private List<BeanPersistController> persistControllers = new ArrayList<BeanPersistController>();
   private List<BeanPostLoad> postLoaders = new ArrayList<BeanPostLoad>();
+  private List<BeanPostConstructListener> postConstructListeners = new ArrayList<BeanPostConstructListener>();
   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.
@@ -366,19 +382,13 @@ public class ServerConfig {
 
   private boolean transactionRollbackOnChecked = true;
 
-  private boolean registerJmxMBeans = true;
-
   // configuration for the background executor service (thread pool)
 
   private int backgroundExecutorSchedulePoolSize = 1;
-  private int backgroundExecutorCorePoolSize = 1;
-  private int backgroundExecutorMaxPoolSize = 8;
-  private int backgroundExecutorIdleSecs = 60;
   private int backgroundExecutorShutdownSecs = 30;
 
   // defaults for the L2 bean caching
 
-  private int cacheWarmingDelay = 30;
   private int cacheMaxSize = 10000;
   private int cacheMaxIdleTime = 600;
   private int cacheMaxTimeToLive = 60 * 60 * 6;
@@ -396,7 +406,7 @@ public class ServerConfig {
   private boolean expressionEqualsWithNullAsNoop;
 
   /**
-   * Set to true to use native ILIKE expression (if support by datasbase platform / like Postgres).
+   * Set to true to use native ILIKE expression (if support by database platform / like Postgres).
    */
   private boolean expressionNativeIlike;
 
@@ -719,6 +729,34 @@ public class ServerConfig {
     this.databaseSequenceBatchSize = databaseSequenceBatchSize;
   }
 
+  /**
+   * Return the default JDBC fetchSize hint for findList queries.
+   */
+  public int getJdbcFetchSizeFindList() {
+    return jdbcFetchSizeFindList;
+  }
+
+  /**
+   * Set the default JDBC fetchSize hint for findList queries.
+   */
+  public void setJdbcFetchSizeFindList(int jdbcFetchSizeFindList) {
+    this.jdbcFetchSizeFindList = jdbcFetchSizeFindList;
+  }
+
+  /**
+   * Return the default JDBC fetchSize hint for findEach/findEachWhile queries.
+   */
+  public int getJdbcFetchSizeFindEach() {
+    return jdbcFetchSizeFindEach;
+  }
+
+  /**
+   * Set the default JDBC fetchSize hint for findEach/findEachWhile queries.
+   */
+  public void setJdbcFetchSizeFindEach(int jdbcFetchSizeFindEach) {
+    this.jdbcFetchSizeFindEach = jdbcFetchSizeFindEach;
+  }
+
   /**
    * Return the ChangeLogPrepare.
    * <p>
@@ -1001,20 +1039,6 @@ public class ServerConfig {
     this.transactionRollbackOnChecked = transactionRollbackOnChecked;
   }
 
-  /**
-   * Return true if the server should register JMX MBeans.
-   */
-  public boolean isRegisterJmxMBeans() {
-    return registerJmxMBeans;
-  }
-
-  /**
-   * Set if the server should register JMX MBeans.
-   */
-  public void setRegisterJmxMBeans(boolean registerJmxMBeans) {
-    this.registerJmxMBeans = registerJmxMBeans;
-  }
-
   /**
    * Return the Background executor schedule pool size. Defaults to 1.
    */
@@ -1029,48 +1053,6 @@ public class ServerConfig {
     this.backgroundExecutorSchedulePoolSize = backgroundExecutorSchedulePoolSize;
   }
 
-  /**
-   * Return the Background executor core pool size.
-   */
-  public int getBackgroundExecutorCorePoolSize() {
-    return backgroundExecutorCorePoolSize;
-  }
-
-  /**
-   * Set the Background executor core pool size.
-   */
-  public void setBackgroundExecutorCorePoolSize(int backgroundExecutorCorePoolSize) {
-    this.backgroundExecutorCorePoolSize = backgroundExecutorCorePoolSize;
-  }
-
-  /**
-   * Return the Background executor max pool size.
-   */
-  public int getBackgroundExecutorMaxPoolSize() {
-    return backgroundExecutorMaxPoolSize;
-  }
-
-  /**
-   * Set the Background executor max pool size.
-   */
-  public void setBackgroundExecutorMaxPoolSize(int backgroundExecutorMaxPoolSize) {
-    this.backgroundExecutorMaxPoolSize = backgroundExecutorMaxPoolSize;
-  }
-
-  /**
-   * Return the Background executor idle seconds.
-   */
-  public int getBackgroundExecutorIdleSecs() {
-    return backgroundExecutorIdleSecs;
-  }
-
-  /**
-   * Set the Background executor idle seconds.
-   */
-  public void setBackgroundExecutorIdleSecs(int backgroundExecutorIdleSecs) {
-    this.backgroundExecutorIdleSecs = backgroundExecutorIdleSecs;
-  }
-
   /**
    * Return the Background executor shutdown seconds. This is the time allowed for the pool to shutdown nicely
    * before it is forced shutdown.
@@ -1087,20 +1069,6 @@ public class ServerConfig {
     this.backgroundExecutorShutdownSecs = backgroundExecutorShutdownSecs;
   }
 
-  /**
-   * Return the cache warming delay in seconds.
-   */
-  public int getCacheWarmingDelay() {
-    return cacheWarmingDelay;
-  }
-
-  /**
-   * Set the cache warming delay in seconds.
-   */
-  public void setCacheWarmingDelay(int cacheWarmingDelay) {
-    this.cacheWarmingDelay = cacheWarmingDelay;
-  }
-
   /**
    * Return the L2 cache default max size.
    */
@@ -1474,7 +1442,7 @@ public class ServerConfig {
    * <p>
    * You can also set this in ebean.proprerties:
    * </p>
-   *
+   * <p>
    * <pre>{@code
    * # set via ebean.properties
    * ebean.encryptKeyManager=com.avaje.tests.basic.encrypt.BasicEncyptKeyManager
@@ -1807,7 +1775,7 @@ public class ServerConfig {
    * queries that normally hit L2 bean cache automatically will not do so after a write/persist
    * on the transaction.
    * </p>
-   *
+   * <p>
    * <pre>{@code
    *
    *   // assume Customer has L2 bean caching enabled ...
@@ -1969,6 +1937,54 @@ public class ServerConfig {
     this.resourceDirectory = resourceDirectory;
   }
 
+  /**
+   * Add a custom type mapping.
+   * <p>
+   * <pre>{@code
+   *
+   *   // set the default mapping for BigDecimal.class/decimal
+   *   serverConfig.addCustomMapping(DbType.DECIMAL, "decimal(18,6)");
+   *
+   *   // set the default mapping for String.class/varchar but only for Postgres
+   *   serverConfig.addCustomMapping(DbType.VARCHAR, "text", Platform.POSTGRES);
+   *
+   * }</pre>
+   *
+   * @param type             The DB type this mapping should apply to
+   * @param columnDefinition The column definition that should be used
+   * @param platform         Optionally specify the platform this mapping should apply to.
+   */
+  public void addCustomMapping(DbType type, String columnDefinition, Platform platform) {
+    customDbTypeMappings.add(new CustomDbTypeMapping(type, columnDefinition, platform));
+  }
+
+  /**
+   * Add a custom type mapping that applies to all platforms.
+   * <p>
+   * <pre>{@code
+   *
+   *   // set the default mapping for BigDecimal/decimal
+   *   serverConfig.addCustomMapping(DbType.DECIMAL, "decimal(18,6)");
+   *
+   *   // set the default mapping for String/varchar
+   *   serverConfig.addCustomMapping(DbType.VARCHAR, "text");
+   *
+   * }</pre>
+   *
+   * @param type             The DB type this mapping should apply to
+   * @param columnDefinition The column definition that should be used
+   */
+  public void addCustomMapping(DbType type, String columnDefinition) {
+    customDbTypeMappings.add(new CustomDbTypeMapping(type, columnDefinition));
+  }
+
+  /**
+   * Return the list of custom type mappings.
+   */
+  public List<CustomDbTypeMapping> getCustomTypeMappings() {
+    return customDbTypeMappings;
+  }
+
   /**
    * Register a BeanQueryAdapter instance.
    * <p>
@@ -2041,6 +2057,16 @@ public class ServerConfig {
     postLoaders.add(postLoad);
   }
 
+  /**
+   * Register a BeanPostConstructListener instance.
+   * <p>
+   * Note alternatively you can use {@link #setPostConstructListeners(List)} to set
+   * all the BeanPostConstructListener instances.
+   * </p>
+   */
+  public void add(BeanPostConstructListener listener) {
+    postConstructListeners.add(listener);
+  } 
   /**
    * Return the list of BeanFindController instances.
    */
@@ -2069,6 +2095,19 @@ public class ServerConfig {
     this.postLoaders = postLoaders;
   }
 
+  /**
+   * Return the list of BeanPostLoader instances.
+   */
+  public List<BeanPostConstructListener> getPostConstructListeners() {
+    return postConstructListeners;
+  }
+
+  /**
+   * Set the list of BeanPostLoader instances.
+   */
+  public void setPostConstructListeners(List<BeanPostConstructListener> listeners) {
+    this.postConstructListeners = listeners;
+  }
   /**
    * Return the BeanPersistController instances.
    */
@@ -2087,35 +2126,6 @@ public class ServerConfig {
     this.persistControllers = persistControllers;
   }
 
-  /**
-   * Register a TransactionEventListener instance
-   * <p>
-   * Note alternatively you can use {@link #setTransactionEventListeners(List)}
-   * to set all the TransactionEventListener instances.
-   * </p>
-   */
-  public void add(TransactionEventListener listener) {
-    transactionEventListeners.add(listener);
-  }
-
-  /**
-   * Return the TransactionEventListener instances.
-   */
-  public List<TransactionEventListener> getTransactionEventListeners() {
-    return transactionEventListeners;
-  }
-
-  /**
-   * Register all the TransactionEventListener instances.
-   * <p>
-   * Note alternatively you can use {@link #add(TransactionEventListener)} to
-   * add TransactionEventListener instances one at a time.
-   * </p>
-   */
-  public void setTransactionEventListeners(List<TransactionEventListener> transactionEventListeners) {
-    this.transactionEventListeners = transactionEventListeners;
-  }
-
   /**
    * Register a BeanPersistListener instance.
    * <p>
@@ -2358,6 +2368,8 @@ public class ServerConfig {
     autoCommitMode = p.getBoolean("autoCommitMode", autoCommitMode);
     useJtaTransactionManager = p.getBoolean("useJtaTransactionManager", useJtaTransactionManager);
 
+    backgroundExecutorSchedulePoolSize = p.getInt("backgroundExecutorSchedulePoolSize", backgroundExecutorSchedulePoolSize);
+    backgroundExecutorShutdownSecs = p.getInt("backgroundExecutorShutdownSecs", backgroundExecutorShutdownSecs);
     disableClasspathSearch = p.getBoolean("disableClasspathSearch", disableClasspathSearch);
     currentUserProvider = createInstance(p, CurrentUserProvider.class, "currentUserProvider", currentUserProvider);
     databasePlatform = createInstance(p, DatabasePlatform.class, "databasePlatform", databasePlatform);
@@ -2367,7 +2379,6 @@ public class ServerConfig {
     dbEncrypt = createInstance(p, DbEncrypt.class, "dbEncrypt", dbEncrypt);
     serverCachePlugin = createInstance(p, ServerCachePlugin.class, "serverCachePlugin", serverCachePlugin);
     serverCacheManager = createInstance(p, ServerCacheManager.class, "serverCacheManager", serverCacheManager);
-    cacheWarmingDelay = p.getInt("cacheWarmingDelay", cacheWarmingDelay);
 
     if (packages != null) {
       String packagesProp = p.get("search.packages", p.get("packages", null));
@@ -2405,6 +2416,8 @@ public class ServerConfig {
     asOfSysPeriod = p.get("asOfSysPeriod", asOfSysPeriod);
     historyTableSuffix = p.get("historyTableSuffix", historyTableSuffix);
     dataSourceJndiName = p.get("dataSourceJndiName", dataSourceJndiName);
+    jdbcFetchSizeFindEach = p.getInt("jdbcFetchSizeFindEach", jdbcFetchSizeFindEach);
+    jdbcFetchSizeFindList = p.getInt("jdbcFetchSizeFindList", jdbcFetchSizeFindList);
     databaseSequenceBatchSize = p.getInt("databaseSequenceBatchSize", databaseSequenceBatchSize);
     databaseBooleanTrue = p.get("databaseBooleanTrue", databaseBooleanTrue);
     databaseBooleanFalse = p.get("databaseBooleanFalse", databaseBooleanFalse);
@@ -2489,13 +2502,14 @@ public class ServerConfig {
   /**
    * Return the PersistBatch mode to use for 'batchOnCascade' taking into account if the database
    * platform supports getGeneratedKeys in batch mode.
-   * <p>
-   * Used to effectively turn off batchOnCascade for SQL Server - still allows explicit batch mode.
-   * </p>
    */
   public PersistBatch appliedPersistBatchOnCascade() {
 
-    return databasePlatform.isDisallowBatchOnCascade() ? PersistBatch.NONE : persistBatchOnCascade;
+    if (persistBatchOnCascade == PersistBatch.INHERIT) {
+      // use the platform default (ALL except SQL Server which has NONE)
+      return databasePlatform.getPersistBatchOnCascade();
+    }
+    return persistBatchOnCascade;
   }
 
   /**
@@ -2571,18 +2585,45 @@ public class ServerConfig {
   public enum DbUuid {
 
     /**
-     * Store using native UUID in H2 and Postgres.
+     * Store using native UUID in H2 and Postgres and otherwise fallback to VARCHAR(40).
      */
-    AUTO,
+    AUTO_VARCHAR(true, false),
 
     /**
-     * Store using DB VARCHAR.
+     * Store using native UUID in H2 and Postgres and otherwise fallback to BINARY(16).
      */
-    VARCHAR,
+    AUTO_BINARY(true, true),
 
     /**
-     * Store using DB BINARY.
+     * Store using DB VARCHAR(40).
      */
-    BINARY
+    VARCHAR(false, false),
+
+    /**
+     * Store using DB BINARY(16).
+     */
+    BINARY(false, true);
+
+    boolean nativeType;
+    boolean binary;
+
+    DbUuid(boolean nativeType, boolean binary) {
+      this.nativeType = nativeType;
+      this.binary = binary;
+    }
+
+    /**
+     * Return true if native UUID type is preferred.
+     */
+    public boolean useNativeType() {
+      return nativeType;
+    }
+
+    /**
+     * Return true if BINARY(16) storage is preferred over VARCHAR(40).
+     */
+    public boolean useBinary() {
+      return binary;
+    }
   }
 }

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

@@ -24,9 +24,9 @@ public class DB2Platform extends DatabasePlatform {
     this.dbIdentity.setSupportsSequence(true);
 
     booleanDbType = Types.BOOLEAN;
-    dbTypeMap.put(Types.REAL, new DbType("real"));
-    dbTypeMap.put(Types.TINYINT, new DbType("smallint"));
-    dbTypeMap.put(Types.DECIMAL, new DbType("decimal", 15));
+    dbTypeMap.put(DbType.REAL, new DbPlatformType("real"));
+    dbTypeMap.put(DbType.TINYINT, new DbPlatformType("smallint"));
+    dbTypeMap.put(DbType.DECIMAL, new DbPlatformType("decimal", 15));
   }
 
   /**

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

@@ -2,6 +2,9 @@ package com.avaje.ebean.config.dbplatform;
 
 import com.avaje.ebean.BackgroundExecutor;
 import com.avaje.ebean.Query;
+import com.avaje.ebean.config.CustomDbTypeMapping;
+import com.avaje.ebean.config.PersistBatch;
+import com.avaje.ebean.config.Platform;
 import com.avaje.ebean.config.ServerConfig;
 import com.avaje.ebean.dbmigration.ddlgeneration.DdlHandler;
 import com.avaje.ebean.dbmigration.ddlgeneration.platform.PlatformDdl;
@@ -14,7 +17,6 @@ import java.sql.DatabaseMetaData;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Types;
-import java.util.Properties;
 
 /**
  * Database platform specific settings.
@@ -33,12 +35,6 @@ public class DatabasePlatform {
      */
     ROLLBACK,
 
-    /**
-     * Just close the transaction. Valid at READ_COMMITTED isolation and preferred on some Databases
-     * as a performance optimisation.
-     */
-    CLOSE,
-
     /**
      * Commit the transaction
      */
@@ -79,7 +75,7 @@ public class DatabasePlatform {
   /**
    * Mapping of JDBC to Database types.
    */
-  protected DbTypeMap dbTypeMap = new DbTypeMap();
+  protected DbPlatformTypeMapping dbTypeMap = new DbPlatformTypeMapping();
 
   /**
    * Default values for DB columns.
@@ -155,11 +151,9 @@ public class DatabasePlatform {
   protected boolean forwardOnlyHintOnFindIterate;
 
   /**
-   * Flag set for SQL Server due to lack of support of getGeneratedKeys in
-   * batch mode (meaning for batch inserts you should explicitly turn off
-   * getGeneratedKeys - joy).
+   * By default we use JDBC batch when cascading (except for SQL Server).
    */
-  protected boolean disallowBatchOnCascade;
+  protected PersistBatch persistBatchOnCascade = PersistBatch.ALL;
 
   protected PlatformDdl platformDdl;
 
@@ -183,8 +177,24 @@ public class DatabasePlatform {
   public DatabasePlatform() {
   }
 
-  public void configure(Properties properties) {
-    // by default do nothing
+  /**
+   * Configure UUID Storage etc based on ServerConfig settings.
+   */
+  public void configure(ServerConfig serverConfig) {
+    dbTypeMap.config(nativeUuidType, serverConfig.getDbUuid());
+    for (CustomDbTypeMapping mapping : serverConfig.getCustomTypeMappings()) {
+      if (platformMatch(mapping.getPlatform())) {
+        dbTypeMap.put(mapping.getType(), parse(mapping.getColumnDefinition()));
+      }
+    }
+  }
+
+  private DbPlatformType parse(String columnDefinition) {
+    return DbPlatformType.parse(columnDefinition);
+  }
+
+  private boolean platformMatch(Platform platform) {
+    return platform == null || platform.name().equalsIgnoreCase(name);
   }
 
   /**
@@ -314,7 +324,7 @@ public class DatabasePlatform {
    *
    * @return the db type map
    */
-  public DbTypeMap getDbTypeMap() {
+  public DbPlatformTypeMapping getDbTypeMap() {
     return dbTypeMap;
   }
 
@@ -542,14 +552,10 @@ public class DatabasePlatform {
   }
 
   /**
-   * Return true if the persistBatchOnCascade setting should be ignored.
-   * <p>
-   * This is primarily for SQL Server which does not support getGeneratedKeys with jdbc batch mode
-   * so can't really be transparently used.
-   * </p>
+   * Return the platform default JDBC batch mode for persist cascade.
    */
-  public boolean isDisallowBatchOnCascade() {
-    return disallowBatchOnCascade;
+  public PersistBatch getPersistBatchOnCascade() {
+    return persistBatchOnCascade;
   }
 
   /**

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

@@ -0,0 +1,158 @@
+package com.avaje.ebean.config.dbplatform;
+
+/**
+ * Represents a DB type with name, length, precision, and scale.
+ * <p>
+ * The length is for VARCHAR types and precision/scale for DECIMAL types.
+ * </p>
+ */
+public class DbPlatformType implements ExtraDbTypes {
+
+  /**
+   * The data type name (VARCHAR, INTEGER ...)
+   */
+  private final String name;
+
+  /**
+   * The default length or precision.
+   */
+  private final int defaultLength;
+
+  /**
+   * The default scale (decimal).
+   */
+  private final int defaultScale;
+
+  /**
+   * Set to true if the type should never have a length or scale.
+   */
+  private final boolean canHaveLength;
+
+  /**
+   * Parse a type definition into a DbPlatformType.
+   * <p>
+   * e.g. "decimal(18,6)"
+   * e.g. "text"
+   * </p>
+   */
+  public static DbPlatformType parse(String columnDefinition) {
+    return DbPlatformTypeParser.parse(columnDefinition);
+  }
+
+  /**
+   * Construct with no length or scale.
+   */
+  public DbPlatformType(String name) {
+    this(name, 0, 0);
+  }
+
+  /**
+   * Construct with a given length.
+   */
+  public DbPlatformType(String name, int defaultLength) {
+    this(name, defaultLength, 0);
+  }
+
+  /**
+   * Construct for Decimal with precision and scale.
+   */
+  public DbPlatformType(String name, int defaultPrecision, int defaultScale) {
+    this.name = name;
+    this.defaultLength = defaultPrecision;
+    this.defaultScale = defaultScale;
+    this.canHaveLength = true;
+  }
+
+  /**
+   * Use with canHaveLength=false for types that should never have a length.
+   * 
+   * @param name
+   *          the type name
+   * @param canHaveLength
+   *          set this to false for type that should never have a length
+   */
+  public DbPlatformType(String name, boolean canHaveLength) {
+    this.name = name;
+    this.defaultLength = 0;
+    this.defaultScale = 0;
+    this.canHaveLength = canHaveLength;
+  }
+
+  /**
+   * Return the type name.
+   */
+  public String getName() {
+    return name;
+  }
+
+  /**
+   * Return the default length/precision.
+   */
+  public int getDefaultLength() {
+    return defaultLength;
+  }
+
+  /**
+   * Return the default scale.
+   */
+  public int getDefaultScale() {
+    return defaultScale;
+  }
+
+  /**
+   * Return the type for a specific property that incorporates the name, length,
+   * precision and scale.
+   * <p>
+   * The deployLength and deployScale are for the property we are rendering the
+   * DB type for.
+   * </p>
+   * 
+   * @param deployLength
+   *          the length or precision defined by deployment on a specific
+   *          property.
+   * @param deployScale
+   *          the scale defined by deployment on a specific property.
+   */
+  public String renderType(int deployLength, int deployScale) {
+    return renderType(deployLength, deployScale, true);
+  }
+
+  /**
+   * Render the type defining strict mode.
+   * <p>
+   * If strict mode if OFF then this will render with a scale value even if
+   * that is not strictly supported. The reason for supporting this is to enable
+   * use to use types like jsonb(200) as a "logical" type that maps to JSONB for
+   * Postgres and VARCHAR(200) for other databases.
+   * </p>
+   */
+  public String renderType(int deployLength, int deployScale, boolean strict) {
+
+    StringBuilder sb = new StringBuilder();
+    sb.append(name);
+
+    if (canHaveLength || !strict) {
+      // see if there is a precision/scale to add (or not)
+      int len = deployLength != 0 ? deployLength : defaultLength;
+      if (len > 0) {
+        sb.append("(");
+        sb.append(len);
+        int scale = deployScale != 0 ? deployScale : defaultScale;
+        if (scale > 0) {
+          sb.append(",");
+          sb.append(scale);
+        }
+        sb.append(")");
+      }
+    }
+
+    return sb.toString();
+  }
+
+  /**
+   * Create a copy of the type with a new default length.
+   */
+  public DbPlatformType withLength(int defaultLength) {
+    return new DbPlatformType(name, defaultLength);
+  }
+}

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

@@ -0,0 +1,53 @@
+package com.avaje.ebean.config.dbplatform;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Helper to reverse lookup a DbType given the name or JDBC int value.
+ */
+class DbPlatformTypeLookup {
+
+  /**
+   * A map to lookup the type by name.
+   */
+  private Map<String, DbType> nameLookup = new HashMap<String, DbType>();
+
+  /**
+   * A map to lookup the type by JDBC int value.
+   */
+  private Map<Integer, DbType> idLookup = new HashMap<Integer, DbType>();
+
+  DbPlatformTypeLookup() {
+    addAll();
+  }
+
+  /**
+   * Return the DbType for the given name.
+   */
+  DbType byName(String name) {
+    return nameLookup.get(name.trim().toUpperCase());
+  }
+
+  /**
+   * Return the DbType for the given name.
+   */
+  DbType byId(int jdbcId) {
+    return idLookup.get(jdbcId);
+  }
+
+  private void addAll() {
+    // Extra mapping for Float and Varchar2
+    add("FLOAT", DbType.REAL);
+    add("VARCHAR2", DbType.VARCHAR);
+    for (DbType type : DbType.values()) {
+      add(type.name(), type);
+    }
+  }
+
+  private void add(String name, DbType dbType) {
+    nameLookup.put(name, dbType);
+    idLookup.put(dbType.id(), dbType);
+  }
+
+}

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

@@ -0,0 +1,180 @@
+package com.avaje.ebean.config.dbplatform;
+
+import com.avaje.ebean.config.ServerConfig;
+
+import java.sql.Types;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Used to map bean property types to DB specific types for DDL generation.
+ */
+public class DbPlatformTypeMapping {
+
+  private static DbPlatformTypeLookup lookup = new DbPlatformTypeLookup();
+
+  private static final DbPlatformType UUID_NATIVE = new DbPlatformType("uuid", false);
+  private static final DbPlatformType UUID_PLACEHOLDER = new DbPlatformType("uuidPlaceholder");
+  private static final DbPlatformType JSON_CLOB_PLACEHOLDER = new DbPlatformType("jsonClobPlaceholder");
+  private static final DbPlatformType JSON_BLOB_PLACEHOLDER = new DbPlatformType("jsonBlobPlaceholder");
+  private static final DbPlatformType JSON_VARCHAR_PLACEHOLDER = new DbPlatformType("jsonVarcharPlaceholder");
+
+  private final Map<DbType, DbPlatformType> typeMap = new HashMap<DbType, DbPlatformType>();
+
+  /**
+   * Return the DbTypeMap with standard (not platform specific) types.
+   * <p>
+   * This has some extended JSON types (JSON, JSONB, JSONVarchar, JSONClob, JSONBlob).
+   * These types get translated to specific database platform types during DDL generation.
+   */
+  public static DbPlatformTypeMapping logicalTypes() {
+    return new DbPlatformTypeMapping(true);
+  }
+
+  public DbPlatformTypeMapping() {
+    loadDefaults(false);
+  }
+
+  private DbPlatformTypeMapping(boolean logicalTypes) {
+    loadDefaults(logicalTypes);
+  }
+
+  /**
+   * Load the standard types. These can be overridden by DB specific platform.
+   */
+  private void loadDefaults(boolean logicalTypes) {
+
+    put(DbType.BOOLEAN);
+    put(DbType.BIT);
+    put(DbType.INTEGER);
+    put(DbType.BIGINT);
+    put(DbType.DOUBLE);
+    put(DbType.SMALLINT);
+    put(DbType.TINYINT);
+    put(DbType.BLOB);
+    put(DbType.CLOB);
+    put(DbType.ARRAY);
+    put(DbType.DATE);
+    put(DbType.TIME);
+    put(DbType.TIMESTAMP);
+    put(DbType.LONGVARBINARY);
+    put(DbType.LONGVARCHAR);
+    // most commonly real maps to db float
+    put(DbType.REAL, new DbPlatformType("float"));
+
+    if (logicalTypes) {
+      // keep it logical for 2 layer DDL generation
+      put(DbType.VARCHAR, new DbPlatformType("varchar"));
+      put(DbType.DECIMAL, new DbPlatformType("decimal"));
+      put(DbType.VARBINARY, new DbPlatformType("varbinary"));
+      put(DbType.BINARY, new DbPlatformType("binary"));
+      put(DbType.CHAR, new DbPlatformType("char"));
+
+      put(DbType.HSTORE, new DbPlatformType("hstore", false));
+      put(DbType.JSON, new DbPlatformType("json", false));
+      put(DbType.JSONB, new DbPlatformType("jsonb", false));
+      put(DbType.JSONCLOB, new DbPlatformType("jsonclob"));
+      put(DbType.JSONBLOB, new DbPlatformType("jsonblob"));
+      put(DbType.JSONVARCHAR, new DbPlatformType("jsonvarchar", 1000));
+      put(DbType.UUID, UUID_NATIVE);
+
+    } else {
+      put(DbType.VARCHAR, new DbPlatformType("varchar", 255));
+      put(DbType.DECIMAL, new DbPlatformType("decimal", 38));
+      put(DbType.VARBINARY, new DbPlatformType("varbinary", 255));
+      put(DbType.BINARY, new DbPlatformType("binary", 255));
+      put(DbType.CHAR, new DbPlatformType("char", 1));
+
+      put(DbType.JSON, JSON_CLOB_PLACEHOLDER); // Postgres maps this to JSON
+      put(DbType.JSONB, JSON_CLOB_PLACEHOLDER); // Postgres maps this to JSONB
+      put(DbType.JSONCLOB, JSON_CLOB_PLACEHOLDER);
+      put(DbType.JSONBLOB, JSON_BLOB_PLACEHOLDER);
+      put(DbType.JSONVARCHAR, JSON_VARCHAR_PLACEHOLDER);
+      put(DbType.UUID, UUID_PLACEHOLDER);
+    }
+  }
+
+  /**
+   * Lookup the platform specific DbType given the standard sql type name.
+   */
+  public DbPlatformType lookup(String name, boolean withScale) {
+
+    DbType type = lookup.byName(name);
+    if (type == null) {
+      throw new IllegalArgumentException("Unknown type [" + name + "] - not standard sql type");
+    }
+    // handle JSON types mapped to clob, blob and varchar
+    switch (type) {
+      case JSONBLOB:
+        return get(DbType.BLOB);
+      case JSONCLOB:
+        return get(DbType.CLOB);
+      case JSONVARCHAR:
+        return get(DbType.VARCHAR);
+      case JSON:
+        return getJsonType(DbType.JSON, withScale);
+      case JSONB:
+        return getJsonType(DbType.JSONB, withScale);
+      default:
+        return get(type);
+    }
+  }
+
+  private DbPlatformType getJsonType(DbType type, boolean withScale) {
+
+    DbPlatformType dbType = get(type);
+    if (dbType == JSON_CLOB_PLACEHOLDER) {
+      // if we have scale that implies this maps to varchar
+      return withScale ? get(DbType.VARCHAR) : get(DbType.CLOB);
+    }
+    if (dbType == JSON_BLOB_PLACEHOLDER) {
+      return get(DbType.BLOB);
+    }
+    if (dbType == JSON_VARCHAR_PLACEHOLDER) {
+      return get(DbType.VARCHAR);
+    }
+    // Postgres has specific type
+    return get(type);
+  }
+
+  /**
+   * Override the type for a given JDBC type.
+   */
+  private void put(DbType type) {
+    typeMap.put(type, type.createPlatformType());
+  }
+
+  /**
+   * Override the type for a given JDBC type.
+   */
+  public void put(DbType type, DbPlatformType platformType) {
+    typeMap.put(type, platformType);
+  }
+
+  /**
+   * Return the type for a given jdbc type.
+   */
+  public DbPlatformType get(int jdbcType) {
+    return get(lookup.byId(jdbcType));
+  }
+
+  /**
+   * Return the type for a given jdbc type.
+   */
+  public DbPlatformType get(DbType dbType) {
+    return typeMap.get(dbType);
+  }
+
+  /**
+   * Map the UUID appropriately based on native DB support and ServerConfig.DbUuid.
+   */
+  public void config(boolean nativeUuidType, ServerConfig.DbUuid dbUuid) {
+    if (nativeUuidType && dbUuid.useNativeType()) {
+      put(DbType.UUID, UUID_NATIVE);
+    } else if (dbUuid.useBinary()) {
+      put(DbType.UUID, get(DbType.BINARY).withLength(16));
+    } else {
+      put(DbType.UUID, get(DbType.VARCHAR).withLength(40));
+    }
+  }
+}

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

@@ -0,0 +1,40 @@
+package com.avaje.ebean.config.dbplatform;
+
+/**
+ * Parse raw column definitions into DbPlatformType like "decimal(18,6)" and "varchar(20) and "json".
+ */
+class DbPlatformTypeParser {
+
+  /**
+   * Parse the column definition and return the DbPlatformType.
+   */
+  static DbPlatformType parse(String columnDefinition) {
+
+    columnDefinition = columnDefinition.trim();
+
+    int openPos = columnDefinition.indexOf('(');
+    if (openPos == -1) {
+      return new DbPlatformType(columnDefinition, false);
+    }
+    int closePos = columnDefinition.indexOf(')', openPos);
+    if (closePos == -1) {
+      return new DbPlatformType(columnDefinition, false);
+    }
+    try {
+      int commaPos = columnDefinition.indexOf(',', openPos);
+      if (commaPos > -1) {
+        String type = columnDefinition.substring(0, openPos);
+        int scale = Integer.parseInt(columnDefinition.substring(openPos + 1, commaPos));
+        int precision = Integer.parseInt(columnDefinition.substring(commaPos + 1, closePos));
+        return new DbPlatformType(type, scale, precision);
+
+      } else {
+        String type = columnDefinition.substring(0, openPos);
+        int scale = Integer.parseInt(columnDefinition.substring(openPos + 1, closePos));
+        return new DbPlatformType(type, scale);
+      }
+    } catch (RuntimeException e) {
+      return new DbPlatformType(columnDefinition, false);
+    }
+  }
+}

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

@@ -1,155 +1,65 @@
 package com.avaje.ebean.config.dbplatform;
 
+import java.sql.Types;
+
 /**
- * Represents a DB type with name, length, precision, and scale.
+ * The known DB types that are mapped.
  * <p>
- * The length is for VARCHAR types and precision/scale for DECIMAL types.
+ * This includes extra types such as UUID, JSON, JSONB and HSTORE.
  * </p>
  */
-public class DbType {
+public enum DbType {
 
-  /**
-   * DB native UUID type (H2 and Postgres).
-   */
-  public static final int UUID = 5010;
+  BOOLEAN(Types.BOOLEAN),
+  BIT(Types.BIT),
+  INTEGER(Types.INTEGER),
+  BIGINT(Types.BIGINT),
+  SMALLINT(Types.SMALLINT),
+  TINYINT(Types.TINYINT),
+  REAL(Types.REAL),
+  //FLOAT(Types.FLOAT),
+  DOUBLE(Types.DOUBLE),
+  DECIMAL(Types.DECIMAL),
+  VARCHAR(Types.VARCHAR),
+  CHAR(Types.CHAR),
+  BLOB(Types.BLOB),
+  CLOB(Types.CLOB),
+  LONGVARBINARY(Types.LONGVARBINARY),
+  LONGVARCHAR(Types.LONGVARCHAR),
+  VARBINARY(Types.VARBINARY),
+  BINARY(Types.BINARY),
+  DATE(Types.DATE),
+  TIME(Types.TIME),
+  TIMESTAMP(Types.TIMESTAMP),
 
-  /**
-   * Type to map Map content to Postgres HSTORE.
-   */
-  public static final int HSTORE = 5000;
+  ARRAY(Types.ARRAY),
 
-  /**
-   * Type to map JSON content to Clob or Postgres JSON type.
-   */
-  public static final int JSON = 5001;
+  UUID(ExtraDbTypes.UUID),
 
-  /**
-   * Type to map JSON content to Clob or Postgres JSONB type.
-   */
-  public static final int JSONB = 5002;
+  HSTORE(ExtraDbTypes.HSTORE),
+  JSON(ExtraDbTypes.JSON),
+  JSONB(ExtraDbTypes.JSONB),
+  JSONCLOB(ExtraDbTypes.JSONClob),
+  JSONBLOB(ExtraDbTypes.JSONBlob),
+  JSONVARCHAR(ExtraDbTypes.JSONVarchar);
 
-  /**
-   * Type to map JSON content to VARCHAR.
-   */
-  public static final int JSONVarchar = 5003;
+  private final int id;
 
-  /**
-   * Type to map JSON content to Clob.
-   */
-  public static final int JSONClob = 5004;
-
-  /**
-   * Type to map JSON content to Blob.
-   */
-  public static final int JSONBlob = 5005;
-
-  /**
-   * The data type name (VARCHAR, INTEGER ...)
-   */
-  private final String name;
-
-  /**
-   * The default length or precision.
-   */
-  private final int defaultLength;
-
-  /**
-   * The default scale (decimal).
-   */
-  private final int defaultScale;
-
-  /**
-   * Set to true if the type should never have a length or scale.
-   */
-  private final boolean canHaveLength;
-
-  /**
-   * Construct with no length or scale.
-   */
-  public DbType(String name) {
-    this(name, 0, 0);
+  DbType(int id) {
+    this.id = id;
   }
 
   /**
-   * Construct with a given length.
+   * Return the JDBC java.sql.Types value.
    */
-  public DbType(String name, int defaultLength) {
-    this(name, defaultLength, 0);
+  public int id() {
+    return id;
   }
 
   /**
-   * Construct for Decimal with precision and scale.
+   * Create a platform type without scale or precision.
    */
-  public DbType(String name, int defaultPrecision, int defaultScale) {
-    this.name = name;
-    this.defaultLength = defaultPrecision;
-    this.defaultScale = defaultScale;
-    this.canHaveLength = true;
+  public DbPlatformType createPlatformType() {
+    return new DbPlatformType(name().toLowerCase());
   }
-
-  /**
-   * Use with canHaveLength=false for types that should never have a length.
-   * 
-   * @param name
-   *          the type name
-   * @param canHaveLength
-   *          set this to false for type that should never have a length
-   */
-  public DbType(String name, boolean canHaveLength) {
-    this.name = name;
-    this.defaultLength = 0;
-    this.defaultScale = 0;
-    this.canHaveLength = canHaveLength;
-  }
-
-  /**
-   * Return the type for a specific property that incorporates the name, length,
-   * precision and scale.
-   * <p>
-   * The deployLength and deployScale are for the property we are rendering the
-   * DB type for.
-   * </p>
-   * 
-   * @param deployLength
-   *          the length or precision defined by deployment on a specific
-   *          property.
-   * @param deployScale
-   *          the scale defined by deployment on a specific property.
-   */
-  public String renderType(int deployLength, int deployScale) {
-    return renderType(deployLength, deployScale, true);
-  }
-
-  /**
-   * Render the type defining strict mode.
-   * <p>
-   * If strict mode if OFF then this will render with a scale value even if
-   * that is not strictly supported. The reason for supporting this is to enable
-   * use to use types like jsonb(200) as a "logical" type that maps to JSONB for
-   * Postgres and VARCHAR(200) for other databases.
-   * </p>
-   */
-  public String renderType(int deployLength, int deployScale, boolean strict) {
-
-    StringBuilder sb = new StringBuilder();
-    sb.append(name);
-
-    if (canHaveLength || !strict) {
-      // see if there is a precision/scale to add (or not)
-      int len = deployLength != 0 ? deployLength : defaultLength;
-      if (len > 0) {
-        sb.append("(");
-        sb.append(len);
-        int scale = deployScale != 0 ? deployScale : defaultScale;
-        if (scale > 0) {
-          sb.append(",");
-          sb.append(scale);
-        }
-        sb.append(")");
-      }
-    }
-
-    return sb.toString();
-  }
-
 }

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

@@ -1,194 +0,0 @@
-package com.avaje.ebean.config.dbplatform;
-
-import java.sql.Types;
-import java.util.HashMap;
-import java.util.Map;
-
-/**
- * Used to map bean property types to DB specific types for DDL generation.
- */
-public class DbTypeMap {
-
-  private static final DbType JSON_CLOB_PLACEHOLDER = new DbType("jsonClobPlaceholder");
-  private static final DbType JSON_BLOB_PLACEHOLDER = new DbType("jsonBlobPlaceholder");
-  private static final DbType JSON_VARCHAR_PLACEHOLDER = new DbType("jsonVarcharPlaceholder");
-
-  /**
-   * A map to reverse lookup the type by name.
-   * <p>
-   * Used when converting from logical types to platform types which we
-   * want to do with 2 phase DDL generation.
-   */
-  static Map<String, Integer> lookup = new HashMap<String, Integer>();
-
-  static {
-    lookup.put("BOOLEAN", Types.BOOLEAN);
-    lookup.put("BIT", Types.BIT);
-    lookup.put("INTEGER", Types.INTEGER);
-    lookup.put("BIGINT", Types.BIGINT);
-    lookup.put("REAL", Types.REAL);
-    // Float is most common REAL mapping to have that as well
-    lookup.put("FLOAT", Types.REAL);
-
-    lookup.put("DOUBLE", Types.DOUBLE);
-    lookup.put("SMALLINT", Types.SMALLINT);
-    lookup.put("TINYINT", Types.TINYINT);
-    lookup.put("DECIMAL", Types.DECIMAL);
-    lookup.put("VARCHAR", Types.VARCHAR);
-    // VARCHAR2 - extra for Oracle specific column definition
-    lookup.put("VARCHAR2", Types.VARCHAR);
-    lookup.put("CHAR", Types.CHAR);
-    lookup.put("BLOB", Types.BLOB);
-    lookup.put("CLOB", Types.CLOB);
-
-    lookup.put("LONGVARBINARY", Types.LONGVARBINARY);
-    lookup.put("LONGVARCHAR", Types.LONGVARCHAR);
-    lookup.put("VARBINARY", Types.VARBINARY);
-    lookup.put("BINARY", Types.BINARY);
-    lookup.put("DATE", Types.DATE);
-    lookup.put("TIME", Types.TIME);
-    lookup.put("TIMESTAMP", Types.TIMESTAMP);
-
-    lookup.put("ARRAY", Types.ARRAY);
-    lookup.put("UUID", DbType.UUID);
-
-    // Not standard java.sql.Types
-    // logical JSON storage types
-    lookup.put("JSON", DbType.JSON);
-    lookup.put("JSONB", DbType.JSONB);
-    lookup.put("JSONCLOB", DbType.JSONClob);
-    lookup.put("JSONBLOB", DbType.JSONBlob);
-    lookup.put("JSONVARCHAR", DbType.JSONVarchar);
-  }
-
-
-  private final Map<Integer, DbType> typeMap = new HashMap<Integer, DbType>();
-
-  /**
-   * Return the DbTypeMap with standard (not platform specific) types.
-   *
-   * This has some extended JSON types (JSON, JSONB, JSONVarchar, JSONClob, JSONBlob).
-   * These types get translated to specific database platform types during DDL generation.
-   */
-  public static DbTypeMap logicalTypes() {
-    return new DbTypeMap(true);
-  }
-
-  public DbTypeMap() {
-    loadDefaults(false);
-  }
-
-  private DbTypeMap(boolean logicalTypes) {
-    loadDefaults(logicalTypes);
-  }
-
-  /**
-   * Load the standard types. These can be overridden by DB specific platform.
-   */
-  private void loadDefaults(boolean logicalTypes) {
-
-    put(Types.BOOLEAN, new DbType("boolean"));
-    put(Types.BIT, new DbType("bit"));
-
-    put(Types.INTEGER, new DbType("integer"));
-    put(Types.BIGINT, new DbType("bigint"));
-    put(Types.REAL, new DbType("float"));
-    put(Types.DOUBLE, new DbType("double"));
-    put(Types.SMALLINT, new DbType("smallint"));
-    put(Types.TINYINT, new DbType("tinyint"));
-    put(Types.DECIMAL, new DbType("decimal", 38));
-
-    put(Types.VARCHAR, new DbType("varchar", 255));
-    put(Types.CHAR, new DbType("char", 1));
-
-    put(Types.BLOB, new DbType("blob"));
-    put(Types.CLOB, new DbType("clob"));
-
-    // DB native UUID support (H2 and Postgres)
-    put(DbType.UUID, new DbType("uuid"));
-    put(Types.ARRAY, new DbType("array"));
-
-    if (logicalTypes) {
-      // keep it logical for 2 layer DDL generation
-      put(DbType.HSTORE, new DbType("hstore", false));
-      put(DbType.JSON, new DbType("json", false));
-      put(DbType.JSONB, new DbType("jsonb", false));
-      put(DbType.JSONClob, new DbType("jsonclob"));
-      put(DbType.JSONBlob, new DbType("jsonblob"));
-      put(DbType.JSONVarchar, new DbType("jsonvarchar", 1000));
-
-    } else {
-      put(DbType.JSON, JSON_CLOB_PLACEHOLDER); // Postgres maps this to JSON
-      put(DbType.JSONB, JSON_CLOB_PLACEHOLDER); // Postgres maps this to JSONB
-      put(DbType.JSONClob, JSON_CLOB_PLACEHOLDER);
-      put(DbType.JSONBlob, JSON_BLOB_PLACEHOLDER);
-      put(DbType.JSONVarchar, JSON_VARCHAR_PLACEHOLDER);
-    }
-
-    put(Types.LONGVARBINARY, new DbType("longvarbinary"));
-    put(Types.LONGVARCHAR, new DbType("lonvarchar"));
-    put(Types.VARBINARY, new DbType("varbinary", 255));
-    put(Types.BINARY, new DbType("binary", 255));
-
-    put(Types.DATE, new DbType("date"));
-    put(Types.TIME, new DbType("time"));
-    put(Types.TIMESTAMP, new DbType("timestamp"));
-
-  }
-
-  /**
-   * Lookup the platform specific DbType given the standard sql type name.
-   */
-  public DbType lookup(String name, boolean withScale) {
-    name = name.trim().toUpperCase();
-    Integer typeKey = lookup.get(name);
-    if (typeKey == null) {
-      throw new IllegalArgumentException("Unknown type [" + name + "] - not standard sql type");
-    }
-    // handle JSON types mapped to clob, blob and varchar
-    switch (typeKey) {
-      case DbType.JSONBlob:
-        return get(Types.BLOB);
-      case DbType.JSONClob:
-        return get(Types.CLOB);
-      case DbType.JSONVarchar:
-        return get(Types.VARCHAR);
-      case DbType.JSON:
-        return getJsonType(DbType.JSON, withScale);
-      case DbType.JSONB:
-        return getJsonType(DbType.JSONB, withScale);
-      default:
-        return get(typeKey);
-    }
-  }
-
-  private DbType getJsonType(int type, boolean withScale) {
-    DbType dbType = get(type);
-    if (dbType == JSON_CLOB_PLACEHOLDER) {
-      // if we have scale that implies this maps to varchar
-      return withScale ? get(Types.VARCHAR) : get(Types.CLOB);
-    }
-    if (dbType == JSON_BLOB_PLACEHOLDER) {
-      return get(Types.BLOB);
-    }
-    if (dbType == JSON_VARCHAR_PLACEHOLDER) {
-      return get(Types.VARCHAR);
-    }
-    // Postgres has specific type
-    return get(type);
-  }
-
-  /**
-   * Override the type for a given JDBC type.
-   */
-  public void put(int jdbcType, DbType dbType) {
-    typeMap.put(jdbcType, dbType);
-  }
-
-  /**
-   * Return the type for a given jdbc type.
-   */
-  public DbType get(int jdbcType) {
-    return typeMap.get(jdbcType);
-  }
-}

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

@@ -0,0 +1,43 @@
+package com.avaje.ebean.config.dbplatform;
+
+/**
+ * Integer codes for the extra types beyond java.sql.Types.
+ */
+public interface ExtraDbTypes {
+
+  /**
+   * DB native UUID type (H2 and Postgres).
+   */
+  int UUID = 5010;
+
+  /**
+   * Type to map Map content to Postgres HSTORE.
+   */
+  int HSTORE = 5000;
+
+  /**
+   * Type to map JSON content to Clob or Postgres JSON type.
+   */
+  int JSON = 5001;
+
+  /**
+   * Type to map JSON content to Clob or Postgres JSONB type.
+   */
+  int JSONB = 5002;
+
+  /**
+   * Type to map JSON content to VARCHAR.
+   */
+  int JSONVarchar = 5003;
+
+  /**
+   * Type to map JSON content to Clob.
+   */
+  int JSONClob = 5004;
+
+  /**
+   * Type to map JSON content to Blob.
+   */
+  int JSONBlob = 5005;
+
+}

src/main/java/com/avaje/ebean/config/dbplatform/H2HistoryTrigger.java

@@ -9,9 +9,7 @@ import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Timestamp;
-import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.List;
 
 /**
  * H2 database trigger used to populate history tables to support the @History feature.
@@ -54,7 +52,6 @@ public class H2HistoryTrigger implements Trigger {
     insertSql.append("insert into ").append(tableName).append(HISTORY_SUFFIX).append(" (");
 
     int count = 0;
-    List<String> columns = new ArrayList<String>();
     while (rs.next()) {
       if (++count > 1) {
         insertSql.append(",");
@@ -66,7 +63,6 @@ public class H2HistoryTrigger implements Trigger {
         this.effectEndPosition = count - 1;
       }
       insertSql.append(columnName);
-      columns.add(columnName);
     }
     insertSql.append(") values (");
     for (int i = 0; i < count; i++) {

src/main/java/com/avaje/ebean/config/dbplatform/H2Platform.java

@@ -1,9 +1,11 @@
 package com.avaje.ebean.config.dbplatform;
 
 import com.avaje.ebean.BackgroundExecutor;
+import com.avaje.ebean.config.ServerConfig;
 import com.avaje.ebean.dbmigration.ddlgeneration.platform.H2Ddl;
 
 import javax.sql.DataSource;
+import java.util.Properties;
 
 /**
  * H2 specific platform.
@@ -19,9 +21,7 @@ public class H2Platform extends DatabasePlatform {
     this.nativeUuidType = true;
     this.dbDefaultValue.setNow("now()");
 
-    // only support getGeneratedKeys with non-batch JDBC
-    // so generally use SEQUENCE instead of IDENTITY for H2
-    this.dbIdentity.setIdType(IdType.SEQUENCE);
+    this.dbIdentity.setIdType(IdType.IDENTITY);
     this.dbIdentity.setSupportsGetGeneratedKeys(true);
     this.dbIdentity.setSupportsSequence(true);
     this.dbIdentity.setSupportsIdentity(true);
@@ -34,6 +34,18 @@ public class H2Platform extends DatabasePlatform {
     // so no changes to dbTypeMap required
   }
 
+  @Override
+  public void configure(ServerConfig serverConfig) {
+    super.configure(serverConfig);
+    Properties properties = serverConfig.getProperties();
+    if (properties != null) {
+      String idType = properties.getProperty("ebean.h2.idtype");
+      if (idType != null) {
+        this.dbIdentity.setIdType(IdType.valueOf(idType));
+      }
+    }
+  }
+
   /**
    * Return a H2 specific sequence IdGenerator that supports batch fetching
    * sequence values.

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

@@ -4,7 +4,6 @@ import com.avaje.ebean.BackgroundExecutor;
 import com.avaje.ebean.dbmigration.ddlgeneration.platform.HsqldbDdl;
 
 import javax.sql.DataSource;
-import java.sql.Types;
 
 /**
  * H2 specific platform.
@@ -22,7 +21,7 @@ public class HsqldbPlatform extends DatabasePlatform {
     this.dbIdentity.setSupportsSequence(true);
     this.dbIdentity.setSupportsIdentity(true);
 
-    dbTypeMap.put(Types.INTEGER, new DbType("integer", false));
+    dbTypeMap.put(DbType.INTEGER, new DbPlatformType("integer", false));
   }
 
   @Override

src/main/java/com/avaje/ebean/config/dbplatform/MsSqlServer2000Platform.java

@@ -1,6 +1,6 @@
 package com.avaje.ebean.config.dbplatform;
 
-import java.sql.Types;
+import com.avaje.ebean.config.PersistBatch;
 
 /**
  * Microsoft SQL Server 2000 specific platform.
@@ -18,6 +18,7 @@ public class MsSqlServer2000Platform extends DatabasePlatform {
   public MsSqlServer2000Platform() {
     super();
     this.name = "mssqlserver2000";
+    this.persistBatchOnCascade = PersistBatch.NONE;
     this.dbIdentity.setIdType(IdType.IDENTITY);
     this.dbIdentity.setSupportsGetGeneratedKeys(false);
     this.dbIdentity.setSelectLastInsertedIdTemplate("select @@IDENTITY as X");
@@ -26,22 +27,22 @@ public class MsSqlServer2000Platform extends DatabasePlatform {
     this.openQuote = "[";
     this.closeQuote = "]";
 
-    dbTypeMap.put(Types.BOOLEAN, new DbType("bit default 0"));
+    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("bit default 0"));
 
-    dbTypeMap.put(Types.BIGINT, new DbType("numeric", 19));
-    dbTypeMap.put(Types.REAL, new DbType("float(16)"));
-    dbTypeMap.put(Types.DOUBLE, new DbType("float(32)"));
-    dbTypeMap.put(Types.TINYINT, new DbType("smallint"));
-    dbTypeMap.put(Types.DECIMAL, new DbType("numeric", 28));
+    dbTypeMap.put(DbType.BIGINT, new DbPlatformType("numeric", 19));
+    dbTypeMap.put(DbType.REAL, new DbPlatformType("float(16)"));
+    dbTypeMap.put(DbType.DOUBLE, new DbPlatformType("float(32)"));
+    dbTypeMap.put(DbType.TINYINT, new DbPlatformType("smallint"));
+    dbTypeMap.put(DbType.DECIMAL, new DbPlatformType("numeric", 28));
 
-    dbTypeMap.put(Types.BLOB, new DbType("image"));
-    dbTypeMap.put(Types.CLOB, new DbType("text"));
-    dbTypeMap.put(Types.LONGVARBINARY, new DbType("image"));
-    dbTypeMap.put(Types.LONGVARCHAR, new DbType("text"));
+    dbTypeMap.put(DbType.BLOB, new DbPlatformType("image"));
+    dbTypeMap.put(DbType.CLOB, new DbPlatformType("text"));
+    dbTypeMap.put(DbType.LONGVARBINARY, new DbPlatformType("image"));
+    dbTypeMap.put(DbType.LONGVARCHAR, new DbPlatformType("text"));
 
-    dbTypeMap.put(Types.DATE, new DbType("datetime"));
-    dbTypeMap.put(Types.TIME, new DbType("datetime"));
-    dbTypeMap.put(Types.TIMESTAMP, new DbType("datetime"));
+    dbTypeMap.put(DbType.DATE, new DbPlatformType("datetime"));
+    dbTypeMap.put(DbType.TIME, new DbPlatformType("datetime"));
+    dbTypeMap.put(DbType.TIMESTAMP, new DbPlatformType("datetime"));
 
   }
 

src/main/java/com/avaje/ebean/config/dbplatform/MsSqlServer2005Platform.java

@@ -1,9 +1,8 @@
 package com.avaje.ebean.config.dbplatform;
 
+import com.avaje.ebean.config.PersistBatch;
 import com.avaje.ebean.dbmigration.ddlgeneration.platform.MsSqlServerDdl;
 
-import java.sql.Types;
-
 /**
  * Microsoft SQL Server 2005 specific platform.
  * <p>
@@ -21,7 +20,7 @@ public class MsSqlServer2005Platform extends DatabasePlatform {
     this.name = "mssqlserver2005";
     // effectively disable persistBatchOnCascade mode for SQL Server
     // due to lack of support for getGeneratedKeys in batch mode
-    this.disallowBatchOnCascade = true;
+    this.persistBatchOnCascade = PersistBatch.NONE;
     this.idInExpandedForm = true;
     this.selectCountWithAlias = true;
     this.sqlLimiter = new MsSqlServer2005SqlLimiter();
@@ -33,23 +32,23 @@ public class MsSqlServer2005Platform extends DatabasePlatform {
     this.openQuote = "[";
     this.closeQuote = "]";
 
-    dbTypeMap.put(Types.BOOLEAN, new DbType("bit default 0"));
+    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("bit default 0"));
 
-    dbTypeMap.put(Types.INTEGER, new DbType("integer", false));
-    dbTypeMap.put(Types.BIGINT, new DbType("numeric", 19));
-    dbTypeMap.put(Types.REAL, new DbType("float(16)"));
-    dbTypeMap.put(Types.DOUBLE, new DbType("float(32)"));
-    dbTypeMap.put(Types.TINYINT, new DbType("smallint"));
-    dbTypeMap.put(Types.DECIMAL, new DbType("numeric", 28));
+    dbTypeMap.put(DbType.INTEGER, new DbPlatformType("integer", false));
+    dbTypeMap.put(DbType.BIGINT, new DbPlatformType("numeric", 19));
+    dbTypeMap.put(DbType.REAL, new DbPlatformType("float(16)"));
+    dbTypeMap.put(DbType.DOUBLE, new DbPlatformType("float(32)"));
+    dbTypeMap.put(DbType.TINYINT, new DbPlatformType("smallint"));
+    dbTypeMap.put(DbType.DECIMAL, new DbPlatformType("numeric", 28));
 
-    dbTypeMap.put(Types.BLOB, new DbType("image"));
-    dbTypeMap.put(Types.CLOB, new DbType("text"));
-    dbTypeMap.put(Types.LONGVARBINARY, new DbType("image"));
-    dbTypeMap.put(Types.LONGVARCHAR, new DbType("text"));
+    dbTypeMap.put(DbType.BLOB, new DbPlatformType("image"));
+    dbTypeMap.put(DbType.CLOB, new DbPlatformType("text"));
+    dbTypeMap.put(DbType.LONGVARBINARY, new DbPlatformType("image"));
+    dbTypeMap.put(DbType.LONGVARCHAR, new DbPlatformType("text"));
 
-    dbTypeMap.put(Types.DATE, new DbType("date"));
-    dbTypeMap.put(Types.TIME, new DbType("time"));
-    dbTypeMap.put(Types.TIMESTAMP, new DbType("datetime2"));
+    dbTypeMap.put(DbType.DATE, new DbPlatformType("date"));
+    dbTypeMap.put(DbType.TIME, new DbPlatformType("time"));
+    dbTypeMap.put(DbType.TIMESTAMP, new DbPlatformType("datetime2"));
 
   }
 

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

@@ -7,7 +7,7 @@ package com.avaje.ebean.config.dbplatform;
  * If no deployment length is defined longblob is used.
  * </p>
  */
-public class MySqlBlob extends DbType {
+public class MySqlBlob extends DbPlatformType {
 
   private static final int POWER_2_16 = 65536;
   private static final int POWER_2_24 = 16777216;

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

@@ -7,7 +7,7 @@ package com.avaje.ebean.config.dbplatform;
  * If no deployment length is defined longtext is used.
  * </p>
  */
-public class MySqlClob extends DbType {
+public class MySqlClob extends DbPlatformType {
 
   private static final int POWER_2_16 = 65536;
   private static final int POWER_2_24 = 16777216;

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

@@ -39,13 +39,13 @@ public class MySqlPlatform extends DatabasePlatform {
     this.forwardOnlyHintOnFindIterate = true;
     this.booleanDbType = Types.BIT;
 
-    dbTypeMap.put(Types.BIT, new DbType("tinyint(1) default 0"));
-    dbTypeMap.put(Types.BOOLEAN, new DbType("tinyint(1) default 0"));
-    dbTypeMap.put(Types.TIMESTAMP, new DbType("datetime(6)"));
-    dbTypeMap.put(Types.CLOB, new MySqlClob());
-    dbTypeMap.put(Types.BLOB, new MySqlBlob());
-    dbTypeMap.put(Types.BINARY, new DbType("binary", 255));
-    dbTypeMap.put(Types.VARBINARY, new DbType("varbinary", 255));
+    dbTypeMap.put(DbType.BIT, new DbPlatformType("tinyint(1) default 0"));
+    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("tinyint(1) default 0"));
+    dbTypeMap.put(DbType.TIMESTAMP, new DbPlatformType("datetime(6)"));
+    dbTypeMap.put(DbType.CLOB, new MySqlClob());
+    dbTypeMap.put(DbType.BLOB, new MySqlBlob());
+    dbTypeMap.put(DbType.BINARY, new DbPlatformType("binary", 255));
+    dbTypeMap.put(DbType.VARBINARY, new DbPlatformType("varbinary", 255));
   }
 
   /**

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

@@ -34,24 +34,24 @@ public class OraclePlatform extends DatabasePlatform {
     this.closeQuote = "\"";
 
     booleanDbType = Types.INTEGER;
-    dbTypeMap.put(Types.BOOLEAN, new DbType("number(1) default 0"));
+    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("number(1) default 0"));
 
-    dbTypeMap.put(Types.INTEGER, new DbType("number", 10));
-    dbTypeMap.put(Types.BIGINT, new DbType("number", 19));
-    dbTypeMap.put(Types.REAL, new DbType("number", 19, 4));
-    dbTypeMap.put(Types.DOUBLE, new DbType("number", 19, 4));
-    dbTypeMap.put(Types.SMALLINT, new DbType("number", 5));
-    dbTypeMap.put(Types.TINYINT, new DbType("number", 3));
-    dbTypeMap.put(Types.DECIMAL, new DbType("number", 38));
+    dbTypeMap.put(DbType.INTEGER, new DbPlatformType("number", 10));
+    dbTypeMap.put(DbType.BIGINT, new DbPlatformType("number", 19));
+    dbTypeMap.put(DbType.REAL, new DbPlatformType("number", 19, 4));
+    dbTypeMap.put(DbType.DOUBLE, new DbPlatformType("number", 19, 4));
+    dbTypeMap.put(DbType.SMALLINT, new DbPlatformType("number", 5));
+    dbTypeMap.put(DbType.TINYINT, new DbPlatformType("number", 3));
+    dbTypeMap.put(DbType.DECIMAL, new DbPlatformType("number", 38));
 
-    dbTypeMap.put(Types.VARCHAR, new DbType("varchar2", 255));
+    dbTypeMap.put(DbType.VARCHAR, new DbPlatformType("varchar2", 255));
 
-    dbTypeMap.put(Types.LONGVARBINARY, new DbType("blob"));
-    dbTypeMap.put(Types.LONGVARCHAR, new DbType("clob"));
-    dbTypeMap.put(Types.VARBINARY, new DbType("raw", 255));
-    dbTypeMap.put(Types.BINARY, new DbType("raw", 255));
+    dbTypeMap.put(DbType.LONGVARBINARY, new DbPlatformType("blob"));
+    dbTypeMap.put(DbType.LONGVARCHAR, new DbPlatformType("clob"));
+    dbTypeMap.put(DbType.VARBINARY, new DbPlatformType("raw", 255));
+    dbTypeMap.put(DbType.BINARY, new DbPlatformType("raw", 255));
 
-    dbTypeMap.put(Types.TIME, new DbType("timestamp"));
+    dbTypeMap.put(DbType.TIME, new DbPlatformType("timestamp"));
   }
 
   @Override

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

@@ -41,35 +41,38 @@ public class PostgresPlatform extends DatabasePlatform {
     this.openQuote = "\"";
     this.closeQuote = "\"";
 
-    DbType dbTypeText = new DbType("text");
-    DbType dbBytea = new DbType("bytea", false);
+    DbPlatformType dbTypeText = new DbPlatformType("text");
+    DbPlatformType dbBytea = new DbPlatformType("bytea", false);
 
-    dbTypeMap.put(DbType.HSTORE, new DbType("hstore", false));
-    dbTypeMap.put(DbType.JSON, new DbType("json", false));
-    dbTypeMap.put(DbType.JSONB, new DbType("jsonb", false));
+    dbTypeMap.put(DbType.HSTORE, new DbPlatformType("hstore", false));
+    dbTypeMap.put(DbType.JSON, new DbPlatformType("json", false));
+    dbTypeMap.put(DbType.JSONB, new DbPlatformType("jsonb", false));
 
-    dbTypeMap.put(Types.INTEGER, new DbType("integer", false));
-    dbTypeMap.put(Types.DOUBLE, new DbType("float"));
-    dbTypeMap.put(Types.TINYINT, new DbType("smallint"));
-    dbTypeMap.put(Types.DECIMAL, new DbType("decimal", 38));
-    dbTypeMap.put(Types.TIMESTAMP, new DbType("timestamptz"));
+    dbTypeMap.put(DbType.INTEGER, new DbPlatformType("integer", false));
+    dbTypeMap.put(DbType.DOUBLE, new DbPlatformType("float"));
+    dbTypeMap.put(DbType.TINYINT, new DbPlatformType("smallint"));
+    dbTypeMap.put(DbType.DECIMAL, new DbPlatformType("decimal", 38));
+    dbTypeMap.put(DbType.TIMESTAMP, new DbPlatformType("timestamptz"));
 
-    dbTypeMap.put(Types.BINARY, dbBytea);
-    dbTypeMap.put(Types.VARBINARY, dbBytea);
+    dbTypeMap.put(DbType.BINARY, dbBytea);
+    dbTypeMap.put(DbType.VARBINARY, dbBytea);
 
-    dbTypeMap.put(Types.BLOB, dbBytea);
-    dbTypeMap.put(Types.CLOB, dbTypeText);
-    dbTypeMap.put(Types.LONGVARBINARY, dbBytea);
-    dbTypeMap.put(Types.LONGVARCHAR, dbTypeText);
+    dbTypeMap.put(DbType.BLOB, dbBytea);
+    dbTypeMap.put(DbType.CLOB, dbTypeText);
+    dbTypeMap.put(DbType.LONGVARBINARY, dbBytea);
+    dbTypeMap.put(DbType.LONGVARCHAR, dbTypeText);
   }
 
   @Override
-  public void configure(Properties properties) {
-    super.configure(properties);
-    String tsType = properties.getProperty("ebean.postgres.timestamp");
-    if (tsType != null) {
-      // set timestamp type to "timestamp" without time zone
-      dbTypeMap.put(Types.TIMESTAMP, new DbType(tsType));
+  public void configure(ServerConfig serverConfig) {
+    super.configure(serverConfig);
+    Properties properties = serverConfig.getProperties();
+    if (properties != null) {
+      String tsType = properties.getProperty("ebean.postgres.timestamp");
+      if (tsType != null) {
+        // set timestamp type to "timestamp" without time zone
+        dbTypeMap.put(DbType.TIMESTAMP, new DbPlatformType(tsType));
+      }
     }
   }
 

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

@@ -18,10 +18,10 @@ public class SQLitePlatform extends DatabasePlatform {
 
     this.booleanDbType = Types.INTEGER;
 
-    dbTypeMap.put(Types.BIT, new DbType("int default 0"));
-    dbTypeMap.put(Types.BOOLEAN, new DbType("int default 0"));
-    dbTypeMap.put(Types.BIGINT, new DbType("integer"));
-    dbTypeMap.put(Types.SMALLINT, new DbType("integer"));
+    dbTypeMap.put(DbType.BIT, new DbPlatformType("int default 0"));
+    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("int default 0"));
+    dbTypeMap.put(DbType.BIGINT, new DbPlatformType("integer"));
+    dbTypeMap.put(DbType.SMALLINT, new DbPlatformType("integer"));
 
   }
 

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

@@ -1,7 +1,5 @@
 package com.avaje.ebean.config.dbplatform;
 
-import java.sql.Types;
-
 /**
  * Sybase SQL Anywhere specific platform.
  * <p>
@@ -23,17 +21,17 @@ public class SqlAnywherePlatform extends DatabasePlatform {
     this.dbIdentity.setSelectLastInsertedIdTemplate("select @@IDENTITY as X");
     this.dbIdentity.setSupportsIdentity(true);
 
-    dbTypeMap.put(Types.BOOLEAN, new DbType("bit default 0"));
-    dbTypeMap.put(Types.BIGINT, new DbType("numeric", 19));
-    dbTypeMap.put(Types.REAL, new DbType("float(16)"));
-    dbTypeMap.put(Types.DOUBLE, new DbType("float(32)"));
-    dbTypeMap.put(Types.TINYINT, new DbType("smallint"));
-    dbTypeMap.put(Types.DECIMAL, new DbType("numeric", 28));
+    dbTypeMap.put(DbType.BOOLEAN, new DbPlatformType("bit default 0"));
+    dbTypeMap.put(DbType.BIGINT, new DbPlatformType("numeric", 19));
+    dbTypeMap.put(DbType.REAL, new DbPlatformType("float(16)"));
+    dbTypeMap.put(DbType.DOUBLE, new DbPlatformType("float(32)"));
+    dbTypeMap.put(DbType.TINYINT, new DbPlatformType("smallint"));
+    dbTypeMap.put(DbType.DECIMAL, new DbPlatformType("numeric", 28));
 
-    dbTypeMap.put(Types.BLOB, new DbType("binary(4500)"));
-    dbTypeMap.put(Types.CLOB, new DbType("long varchar"));
-    dbTypeMap.put(Types.LONGVARBINARY, new DbType("long binary"));
-    dbTypeMap.put(Types.LONGVARCHAR, new DbType("long varchar"));
+    dbTypeMap.put(DbType.BLOB, new DbPlatformType("binary(4500)"));
+    dbTypeMap.put(DbType.CLOB, new DbPlatformType("long varchar"));
+    dbTypeMap.put(DbType.LONGVARBINARY, new DbPlatformType("long binary"));
+    dbTypeMap.put(DbType.LONGVARCHAR, new DbPlatformType("long varchar"));
 
   }
 

src/main/java/com/avaje/ebean/dbmigration/DbMigration.java

@@ -7,7 +7,7 @@ import com.avaje.ebean.config.DbMigrationConfig;
 import com.avaje.ebean.config.ServerConfig;
 import com.avaje.ebean.config.dbplatform.DB2Platform;
 import com.avaje.ebean.config.dbplatform.DatabasePlatform;
-import com.avaje.ebean.config.dbplatform.DbPlatformName;
+import com.avaje.ebean.config.Platform;
 import com.avaje.ebean.config.dbplatform.H2Platform;
 import com.avaje.ebean.config.dbplatform.MsSqlServer2005Platform;
 import com.avaje.ebean.config.dbplatform.MySqlPlatform;
@@ -139,7 +139,7 @@ public class DbMigration {
    * If not set this defaults to the platform of the default server.
    * </p>
    */
-  public void setPlatform(DbPlatformName platform) {
+  public void setPlatform(Platform platform) {
     setPlatform(getPlatform(platform));
   }
 
@@ -163,10 +163,7 @@ public class DbMigration {
    * from the migration (e.g. generate migration sql for MySql, Postgres and Oracle).
    * </p>
    */
-  public void addPlatform(DbPlatformName platform, String prefix) {
-    if (!prefix.endsWith("-")) {
-      prefix += "-";
-    }
+  public void addPlatform(Platform platform, String prefix) {
     platforms.add(new Pair(getPlatform(platform), prefix));
   }
 
@@ -204,13 +201,20 @@ public class DbMigration {
 
     // use this flag to stop other plugins like full DDL generation
     if (!online) {
-      DbOffline.setRunningMigration();
+      DbOffline.setGenerateMigration();
+      if (databasePlatform == null && !platforms.isEmpty()) {
+        // for multiple platform generation set the general platform
+        // to H2 so that it runs offline without DB connection
+        setPlatform(platforms.get(0).platform);
+      }
     }
     setDefaults();
     try {
       Request request = createRequest();
 
-      generateExtraDdl(request);
+      if (platforms.isEmpty()) {
+        generateExtraDdl(request.migrationDir, databasePlatform);
+      }
 
       String pendingVersion = generatePendingDrop();
       if (pendingVersion != null) {
@@ -234,15 +238,15 @@ public class DbMigration {
    * migration runner.
    * </p>
    */
-  private void generateExtraDdl(Request request) throws IOException {
+  private void generateExtraDdl(File migrationDir, DatabasePlatform dbPlatform) throws IOException {
 
-    if (databasePlatform != null) {
+    if (dbPlatform != null) {
       ExtraDdl extraDdl = ExtraDdlXmlReader.read("/extra-ddl.xml");
       if (extraDdl != null) {
         List<DdlScript> ddlScript = extraDdl.getDdlScript();
         for (DdlScript script : ddlScript) {
-          if (ExtraDdlXmlReader.matchPlatform(databasePlatform.getName(), script.getPlatforms())) {
-            writeExtraDdl(request, script);
+          if (ExtraDdlXmlReader.matchPlatform(dbPlatform.getName(), script.getPlatforms())) {
+            writeExtraDdl(migrationDir, script);
           }
         }
       }
@@ -252,13 +256,13 @@ public class DbMigration {
   /**
    * Write (or override) the "repeatable" migration script.
    */
-  private void writeExtraDdl(Request request, DdlScript script) throws IOException {
+  private void writeExtraDdl(File migrationDir, DdlScript script) throws IOException {
 
     String fullName = repeatableMigrationName(script.getName());
 
     logger.info("writing repeatable script {}", fullName);
 
-    File file = new File(request.migrationDir, fullName);
+    File file = new File(migrationDir, fullName);
     FileWriter writer = new FileWriter(file);
     writer.write(script.getValue());
     writer.flush();
@@ -363,14 +367,16 @@ public class DbMigration {
       logger.warn("migration already exists, not generating DDL");
 
     } else {
-      if (databasePlatform != null) {
+      if (!platforms.isEmpty()) {
+        writeExtraPlatformDdl(fullVersion, request.currentModel, dbMigration, request.migrationDir);
+
+      } else if (databasePlatform != null) {
         // writer needs the current model to provide table/column details for
         // history ddl generation (triggers, history tables etc)
         DdlWrite write = new DdlWrite(new MConfiguration(), request.current);
         PlatformDdlWriter writer = createDdlWriter(databasePlatform, "");
         writer.processMigration(dbMigration, write, request.migrationDir, fullVersion);
       }
-      writeExtraPlatformDdl(fullVersion, request.currentModel, dbMigration, request.migrationDir);
     }
   }
 
@@ -426,7 +432,10 @@ public class DbMigration {
     for (Pair pair : platforms) {
       DdlWrite platformBuffer = new DdlWrite(new MConfiguration(), currentModel.read());
       PlatformDdlWriter platformWriter = createDdlWriter(pair);
-      platformWriter.processMigration(dbMigration, platformBuffer, writePath, fullVersion);
+      File subPath = platformWriter.subPath(writePath, pair.prefix);
+      platformWriter.processMigration(dbMigration, platformBuffer, subPath, fullVersion);
+
+      generateExtraDdl(subPath, pair.platform);
     }
   }
 
@@ -506,7 +515,7 @@ public class DbMigration {
   /**
    * Return the DatabasePlatform given the platform key.
    */
-  protected DatabasePlatform getPlatform(DbPlatformName platform) {
+  protected DatabasePlatform getPlatform(Platform platform) {
     switch (platform) {
       case H2:
         return new H2Platform();

src/main/java/com/avaje/ebean/dbmigration/DbOffline.java

@@ -1,6 +1,6 @@
 package com.avaje.ebean.dbmigration;
 
-import com.avaje.ebean.config.dbplatform.DbPlatformName;
+import com.avaje.ebean.config.Platform;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -14,12 +14,12 @@ public class DbOffline {
 
   private static final String KEY = "ebean.dboffline";
 
-  private static boolean runningMigration;
+  private static boolean generateMigration;
 
   /**
    * Set the platform to use when creating the next EbeanServer instance.
    */
-  public static void setPlatform(DbPlatformName dbPlatform) {
+  public static void setPlatform(Platform dbPlatform) {
     System.setProperty(KEY, dbPlatform.name());
   }
 
@@ -41,7 +41,7 @@ public class DbOffline {
    * Bring up the next EbeanServer instance using the H2 platform.
    */
   public static void asH2() {
-    setPlatform(DbPlatformName.H2);
+    setPlatform(Platform.H2);
   }
 
   /**
@@ -55,23 +55,23 @@ public class DbOffline {
    * Return true if the migration is running. This typically means don't run the
    * plugins like full DDL generation.
    */
-  public static boolean isRunningMigration() {
-    return runningMigration;
+  public static boolean isGenerateMigration() {
+    return generateMigration;
   }
 
   /**
    * Called when the migration is running is order to stop other plugins
    * like the full DDL generation from executing.
    */
-  public static void setRunningMigration() {
-    runningMigration = true;
+  public static void setGenerateMigration() {
+    generateMigration = true;
   }
 
   /**
    * Reset the offline platform and runningMigration flag.
    */
   public static void reset() {
-    runningMigration = false;
+    generateMigration = false;
     System.clearProperty(KEY);
     logger.debug("reset");
   }

src/main/java/com/avaje/ebean/dbmigration/DdlGenerator.java

@@ -96,7 +96,13 @@ public class DdlGenerator {
     Transaction transaction = server.createTransaction();
     Connection connection = transaction.getConnection();
     try {
+      if (expectErrors) {
+        connection.setAutoCommit(true);
+      }
       int count = runner.runAll(content, connection);
+      if (expectErrors) {
+        connection.setAutoCommit(false);
+      }
       transaction.commit();
       return count;
 

src/main/java/com/avaje/ebean/dbmigration/ddlgeneration/platform/BaseTableDdl.java

@@ -583,6 +583,12 @@ public class BaseTableDdl implements TableDdl {
       }
     }
 
+    for (Column column : columns) {
+      if (hasValue(column.getReferences())) {
+        writeForeignKey(writer, tableName, column);
+      }
+    }
+
     // add a bit of whitespace
     writer.apply().end();
   }
@@ -831,9 +837,10 @@ public class BaseTableDdl implements TableDdl {
 
   protected void alterTableAddColumn(DdlBuffer buffer, String tableName, Column column, boolean onHistoryTable) throws IOException {
 
+    String convertedType = platformDdl.convert(column.getType(), false);
     buffer.append("alter table ").append(tableName)
         .append(" add column ").append(column.getName())
-        .append(" ").append(column.getType());
+        .append(" ").append(convertedType);
 
     if (!onHistoryTable) {
       if (isTrue(column.isNotnull())) {

src/main/java/com/avaje/ebean/dbmigration/ddlgeneration/platform/PlatformDdl.java

@@ -26,6 +26,8 @@ import java.util.List;
  */
 public class PlatformDdl {
 
+  protected final DatabasePlatform platform;
+
   protected PlatformHistoryDdl historyDdl = new NoHistorySupportDdl();
 
   /**
@@ -98,6 +100,7 @@ public class PlatformDdl {
   protected final DbDefaultValue dbDefaultValue;
 
   public PlatformDdl(DatabasePlatform platform) {
+    this.platform = platform;
     this.dbIdentity = platform.getDbIdentity();
     this.dbDefaultValue = platform.getDbDefaultValue();
     this.typeConverter = new PlatformTypeConverter(platform.getDbTypeMap());

src/main/java/com/avaje/ebean/dbmigration/ddlgeneration/platform/util/PlatformTypeConverter.java

@@ -1,7 +1,7 @@
 package com.avaje.ebean.dbmigration.ddlgeneration.platform.util;
 
-import com.avaje.ebean.config.dbplatform.DbType;
-import com.avaje.ebean.config.dbplatform.DbTypeMap;
+import com.avaje.ebean.config.dbplatform.DbPlatformType;
+import com.avaje.ebean.config.dbplatform.DbPlatformTypeMapping;
 
 /**
  * Converts a logical column definition into platform specific one.
@@ -10,12 +10,12 @@ import com.avaje.ebean.config.dbplatform.DbTypeMap;
  */
 public class PlatformTypeConverter {
 
-  protected final DbTypeMap platformTypes;
+  protected final DbPlatformTypeMapping platformTypes;
 
   /**
    * Construct with the platform specific types.
    */
-  public PlatformTypeConverter(DbTypeMap platformTypes) {
+  public PlatformTypeConverter(DbPlatformTypeMapping platformTypes) {
     this.platformTypes = platformTypes;
   }
 
@@ -47,7 +47,7 @@ public class PlatformTypeConverter {
     String suffix = close + 1 < columnDefinition.length() ? columnDefinition.substring(close + 1) : "";
     String type = columnDefinition.substring(0, open);
     try {
-      DbType dbType = platformTypes.lookup(type, true);
+      DbPlatformType dbType = platformTypes.lookup(type, true);
       int comma = columnDefinition.indexOf(',', open);
       if (comma > -1) {
         // scale and precision - decimal(10,4)
@@ -73,7 +73,7 @@ public class PlatformTypeConverter {
   protected String convertNoScale(String columnDefinition) {
 
     try {
-      DbType dbType = platformTypes.lookup(columnDefinition, false);
+      DbPlatformType dbType = platformTypes.lookup(columnDefinition, false);
       return dbType.renderType(0, 0);
 
     } catch (IllegalArgumentException e) {

src/main/java/com/avaje/ebean/dbmigration/model/CurrentModel.java

@@ -11,7 +11,6 @@ import com.avaje.ebean.dbmigration.model.visitor.VisitAllUsing;
 import com.avaje.ebeaninternal.api.SpiEbeanServer;
 
 import java.io.IOException;
-import java.util.List;
 
 /**
  * Reads EbeanServer bean descriptors to build the current model.
@@ -24,6 +23,8 @@ public class CurrentModel {
 
   private final DbConstraintNaming.MaxLength maxLength;
 
+  private final boolean platformTypes;
+
   private ModelContainer model;
 
   private ChangeSet changeSet;
@@ -31,32 +32,31 @@ public class CurrentModel {
   private DdlWrite write;
 
   /**
-   * Construct with a given EbeanServer instance.
+   * Construct with a given EbeanServer instance for DDL create all generation, not migration.
    */
   public CurrentModel(SpiEbeanServer server) {
-    this(server, server.getServerConfig().getConstraintNaming());
+    this(server, server.getServerConfig().getConstraintNaming(), true);
   }
 
   /**
    * Construct with a given EbeanServer, platformDdl and constraintNaming convention.
    * <p>
-   *   Note the EbeanServer is just used to read the BeanDescriptors and platformDdl supplies
-   *   the platform specific handling on
+   * Note the EbeanServer is just used to read the BeanDescriptors and platformDdl supplies
+   * the platform specific handling on
    * </p>
    */
   public CurrentModel(SpiEbeanServer server, DbConstraintNaming constraintNaming) {
+    this(server, constraintNaming, false);
+  }
+
+  private CurrentModel(SpiEbeanServer server, DbConstraintNaming constraintNaming, boolean platformTypes) {
     this.server = server;
     this.constraintNaming = constraintNaming;
     this.maxLength = maxLength(server, constraintNaming);
+    this.platformTypes = platformTypes;
   }
 
-  public CurrentModel(SpiEbeanServer server, DbConstraintNaming constraintNaming, int maxConstraintLength) {
-    this.server = server;
-    this.constraintNaming = constraintNaming;
-    this.maxLength = new DefaultConstraintMaxLength(maxConstraintLength);
-  }
-
-  private DbConstraintNaming.MaxLength maxLength(SpiEbeanServer server, DbConstraintNaming naming) {
+  private static DbConstraintNaming.MaxLength maxLength(SpiEbeanServer server, DbConstraintNaming naming) {
 
     if (naming.getMaxLength() != null) {
       return naming.getMaxLength();
@@ -73,7 +73,7 @@ public class CurrentModel {
     if (model == null) {
       model = new ModelContainer();
 
-      ModelBuildContext context = new ModelBuildContext(model, constraintNaming, maxLength);
+      ModelBuildContext context = new ModelBuildContext(model, constraintNaming, maxLength, platformTypes);
       ModelBuildBeanVisitor visitor = new ModelBuildBeanVisitor(context);
       VisitAllUsing visit = new VisitAllUsing(visitor, server);
       visit.visitAllBeans();

src/main/java/com/avaje/ebean/dbmigration/model/MTable.java

@@ -104,7 +104,7 @@ public class MTable {
   /**
    * Compound unique constraints.
    */
-  private List<MCompoundUniqueConstraint> compoundUniqueConstraints = new ArrayList<MCompoundUniqueConstraint>();
+  private List<MCompoundUniqueConstraint> uniqueConstraints = new ArrayList<MCompoundUniqueConstraint>();
 
   /**
    * Compound foreign keys.
@@ -216,7 +216,7 @@ public class MTable {
       createTable.getForeignKey().add(compoundKey.createForeignKey());
     }
 
-    for (MCompoundUniqueConstraint constraint : compoundUniqueConstraints) {
+    for (MCompoundUniqueConstraint constraint : uniqueConstraints) {
       UniqueConstraint uq = new UniqueConstraint();
       uq.setName(constraint.getName());
       String[] columns = constraint.getColumns();
@@ -270,17 +270,15 @@ public class MTable {
     }
 
     // compare existing columns (look for dropped columns)
-    int columnPosition = 0;
     for (MColumn existingColumn : allColumns()) {
       MColumn newColumn = newColumnMap.get(existingColumn.getName());
       if (newColumn == null) {
-        diffDropColumn(modelDiff, existingColumn, columnPosition, newTable);
+        diffDropColumn(modelDiff, existingColumn);
       } else if (newColumn.isDraftOnly() && !draft) {
         // effectively a drop column (draft only column on a non-draft table)
         logger.trace("... drop column {} from table {} as now draftOnly", newColumn.getName(), name);
-        diffDropColumn(modelDiff, existingColumn, columnPosition, newTable);
+        diffDropColumn(modelDiff, existingColumn);
       }
-      columnPosition++;
     }
 
     if (addColumn != null) {
@@ -404,8 +402,8 @@ public class MTable {
     return columns;
   }
 
-  public List<MCompoundUniqueConstraint> getCompoundUniqueConstraints() {
-    return compoundUniqueConstraints;
+  public List<MCompoundUniqueConstraint> getUniqueConstraints() {
+    return uniqueConstraints;
   }
 
   public List<MCompoundForeignKey> getCompoundKeys() {
@@ -476,21 +474,21 @@ public class MTable {
   }
 
   /**
-   * Add a compound unique constraint.
+   * Add a unique constraint.
    */
-  public void addCompoundUniqueConstraint(String[] columns, boolean oneToOne, String constraintName) {
-    compoundUniqueConstraints.add(new MCompoundUniqueConstraint(columns, oneToOne, constraintName));
+  public void addUniqueConstraint(String[] columns, boolean oneToOne, String constraintName) {
+    uniqueConstraints.add(new MCompoundUniqueConstraint(columns, oneToOne, constraintName));
   }
 
   /**
-   * Add a compound unique constraint.
+   * Add a unique constraint.
    */
-  public void addCompoundUniqueConstraint(List<MColumn> columns, boolean oneToOne, String constraintName) {
+  public void addUniqueConstraint(List<MColumn> columns, boolean oneToOne, String constraintName) {
     String[] cols = new String[columns.size()];
     for (int i = 0; i < columns.size(); i++) {
       cols[i] = columns.get(i).getName();
     }
-    addCompoundUniqueConstraint(cols, oneToOne, constraintName);
+    addUniqueConstraint(cols, oneToOne, constraintName);
   }
 
   /**
@@ -540,7 +538,7 @@ public class MTable {
   /**
    * Add a 'drop column' to the diff.
    */
-  private void diffDropColumn(ModelDiff modelDiff, MColumn existingColumn, int columnPosition, MTable newTable) {
+  private void diffDropColumn(ModelDiff modelDiff, MColumn existingColumn) {
 
     DropColumn dropColumn = new DropColumn();
     dropColumn.setTableName(name);

src/main/java/com/avaje/ebean/dbmigration/model/PlatformDdlWriter.java

@@ -9,6 +9,8 @@ import com.avaje.ebean.dbmigration.ddlgeneration.DdlWrite;
 import com.avaje.ebean.dbmigration.migration.ChangeSet;
 import com.avaje.ebean.dbmigration.migration.ChangeSetType;
 import com.avaje.ebean.dbmigration.migration.Migration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.FileWriter;
@@ -21,6 +23,8 @@ import java.util.List;
  */
 public class PlatformDdlWriter {
 
+  private static final Logger logger = LoggerFactory.getLogger(PlatformDdlWriter.class);
+
   private final ServerConfig serverConfig;
 
   private final DatabasePlatform platform;
@@ -67,7 +71,7 @@ public class PlatformDdlWriter {
   protected void writePlatformDdl(DdlWrite write, File resourcePath, String fullVersion) throws IOException {
 
     if (!write.isApplyEmpty()) {
-      FileWriter applyWriter = createWriter(resourcePath, fullVersion, "", config.getApplySuffix());
+      FileWriter applyWriter = createWriter(resourcePath, fullVersion, config.getApplySuffix());
       try {
         writeApplyDdl(applyWriter, write);
         applyWriter.flush();
@@ -77,28 +81,12 @@ public class PlatformDdlWriter {
     }
   }
 
-  protected FileWriter createWriter(File path, String fullVersion, String subPath, String suffix) throws IOException {
+  protected FileWriter createWriter(File path, String fullVersion, String suffix) throws IOException {
 
-    String fileName = fullVersion;
-    if (!platformPrefix.isEmpty()) {
-      fileName += "-"+platformPrefix;
-    }
-    if (subPath != null && !subPath.isEmpty()) {
-      path = subPath(path, subPath);
-    }
-    fileName += suffix;
-    File applyFile = new File(path,  fileName);
+    File applyFile = new File(path,  fullVersion + suffix);
     return new FileWriter(applyFile);
   }
 
-  protected File subPath(File path, String suffix) {
-    File subPath = new File(path, suffix);
-    if (!subPath.exists()) {
-      subPath.mkdirs();
-    }
-    return subPath;
-  }
-
   /**
    * Write the 'Apply' DDL buffers to the writer.
    */
@@ -127,4 +115,17 @@ public class PlatformDdlWriter {
     return platform.createDdlHandler(serverConfig);
   }
 
+  /**
+   * Return a sub directory (for multi-platform ddl generation).
+   */
+  public File subPath(File path, String suffix) {
+    File subPath = new File(path, suffix);
+    if (!subPath.exists()) {
+      if (!subPath.mkdirs()) {
+        logger.error("failed to create directories for " + subPath.getAbsolutePath());
+      }
+    }
+    return subPath;
+  }
+
 }

src/main/java/com/avaje/ebean/dbmigration/model/build/ModelBuildBeanVisitor.java

@@ -1,6 +1,6 @@
 package com.avaje.ebean.dbmigration.model.build;
 
-import com.avaje.ebean.config.dbplatform.DbType;
+import com.avaje.ebean.config.dbplatform.DbPlatformType;
 import com.avaje.ebean.config.dbplatform.IdType;
 import com.avaje.ebean.dbmigration.migration.IdentityType;
 import com.avaje.ebean.dbmigration.model.MColumn;
@@ -52,7 +52,7 @@ public class ModelBuildBeanVisitor implements BeanVisitor {
     if (inheritInfo != null && inheritInfo.isRoot()) {
       // add the discriminator column
       String discColumn = inheritInfo.getDiscriminatorColumn();
-      DbType dbType = ctx.getDbTypeMap().get(inheritInfo.getDiscriminatorType());
+      DbPlatformType dbType = ctx.getDbTypeMap().get(inheritInfo.getDiscriminatorType());
       String discDbType = dbType.renderType(inheritInfo.getDiscriminatorLength(), 0);
 
       table.addColumn(new MColumn(discColumn, discDbType, true));

src/main/java/com/avaje/ebean/dbmigration/model/build/ModelBuildContext.java

@@ -1,8 +1,8 @@
 package com.avaje.ebean.dbmigration.model.build;
 
 import com.avaje.ebean.config.DbConstraintNaming;
-import com.avaje.ebean.config.dbplatform.DbType;
-import com.avaje.ebean.config.dbplatform.DbTypeMap;
+import com.avaje.ebean.config.dbplatform.DbPlatformType;
+import com.avaje.ebean.config.dbplatform.DbPlatformTypeMapping;
 import com.avaje.ebean.dbmigration.model.MColumn;
 import com.avaje.ebean.dbmigration.model.MTable;
 import com.avaje.ebean.dbmigration.model.ModelContainer;
@@ -21,7 +21,7 @@ public class ModelBuildContext {
    * Use platform agnostic logical types. These types are converted to
    * platform specific types in the DDL generation.
    */
-  private final DbTypeMap dbTypeMap = DbTypeMap.logicalTypes();
+  private final DbPlatformTypeMapping dbTypeMap = DbPlatformTypeMapping.logicalTypes();
 
   private final ModelContainer model;
 
@@ -29,10 +29,13 @@ public class ModelBuildContext {
 
   private final DbConstraintNaming.MaxLength maxLength;
 
-  public ModelBuildContext(ModelContainer model, DbConstraintNaming naming, DbConstraintNaming.MaxLength maxLength) {
+  private final boolean platformTypes;
+
+  public ModelBuildContext(ModelContainer model, DbConstraintNaming naming, DbConstraintNaming.MaxLength maxLength, boolean platformTypes) {
     this.model = model;
     this.constraintNaming = naming;
     this.maxLength = maxLength;
+    this.platformTypes = platformTypes;
   }
 
   /**
@@ -103,7 +106,7 @@ public class ModelBuildContext {
    * Return the map used to determine the DB specific type
    * for a given bean property.
    */
-  public DbTypeMap getDbTypeMap() {
+  public DbPlatformTypeMapping getDbTypeMap() {
     return dbTypeMap;
   }
 
@@ -112,14 +115,14 @@ public class ModelBuildContext {
    * Render the DB type for this property given the strict mode.
    */
   public String getColumnDefn(BeanProperty p, boolean strict) {
-    DbType dbType = getDbType(p);
+    DbPlatformType dbType = getDbType(p);
     if (dbType == null) {
       throw new IllegalStateException("Unknown DbType mapping for " + p.getFullBeanName());
     }
     return p.renderDbType(dbType, strict);
   }
 
-  private DbType getDbType(BeanProperty p) {
+  private DbPlatformType getDbType(BeanProperty p) {
 
     if (p.isDbEncrypted()) {
       return dbTypeMap.get(p.getDbEncryptedType());
@@ -132,7 +135,7 @@ public class ModelBuildContext {
     }
 
     // can be the logical JSON types (JSON, JSONB, JSONClob, JSONBlob, JSONVarchar)
-    int dbType = p.getDbType();
+    int dbType = p.getDbType(platformTypes);
     if (dbType == 0) {
       throw new RuntimeException("No scalarType defined for " + p.getFullBeanName());
     }

src/main/java/com/avaje/ebean/dbmigration/model/build/ModelBuildPropertyVisitor.java

@@ -10,7 +10,7 @@ import com.avaje.ebeaninternal.server.deploy.BeanProperty;
 import com.avaje.ebeaninternal.server.deploy.BeanPropertyAssocMany;
 import com.avaje.ebeaninternal.server.deploy.BeanPropertyAssocOne;
 import com.avaje.ebeaninternal.server.deploy.BeanPropertyCompound;
-import com.avaje.ebeaninternal.server.deploy.CompoundUniqueConstraint;
+import com.avaje.ebeaninternal.server.deploy.IndexDefinition;
 import com.avaje.ebeaninternal.server.deploy.InheritInfo;
 import com.avaje.ebeaninternal.server.deploy.TableJoinColumn;
 import com.avaje.ebeaninternal.server.deploy.id.ImportedId;
@@ -45,30 +45,30 @@ public class ModelBuildPropertyVisitor extends BaseTablePropertyVisitor {
     this.ctx = ctx;
     this.table = table;
     this.beanDescriptor = beanDescriptor;
-    addCompoundUniqueConstraint(beanDescriptor.getCompoundUniqueConstraints());
+    addIndexes(beanDescriptor.getIndexDefinitions());
   }
 
   /**
    * Add unique constraints defined via JPA UniqueConstraint annotations.
    */
-  private void addCompoundUniqueConstraint(CompoundUniqueConstraint[] constraints) {
+  private void addIndexes(IndexDefinition[] indexes) {
 
-    if (constraints != null) {
-      for (int i = 0; i < constraints.length; i++) {
-        CompoundUniqueConstraint constraint = constraints[i];
-        String[] columns = constraint.getColumns();
+    if (indexes != null) {
+      for (int i = 0; i < indexes.length; i++) {
+        IndexDefinition index = indexes[i];
+        String[] columns = index.getColumns();
         indexSet.add(columns);
 
-        if (constraint.isUnique()) {
-          String uqName = constraint.getName();
+        if (index.isUnique()) {
+          String uqName = index.getName();
           if (uqName == null || uqName.trim().isEmpty()) {
             uqName = determineUniqueConstraintName(columns);
           }
-          table.addCompoundUniqueConstraint(columns, false, uqName);
+          table.addUniqueConstraint(columns, false, uqName);
 
         } else {
           // 'just' an index (not a unique constraint)
-          String idxName = constraint.getName();
+          String idxName = index.getName();
           if (idxName == null || idxName.trim().isEmpty()) {
             idxName = determineIndexName(columns);
           }
@@ -216,7 +216,7 @@ public class ModelBuildPropertyVisitor extends BaseTablePropertyVisitor {
 
       } else {
         String uqName = determineUniqueConstraintName(p.getName());
-        table.addCompoundUniqueConstraint(modelColumns, true, uqName);
+        table.addUniqueConstraint(modelColumns, true, uqName);
         indexSetAdd(modelColumns);
       }
     }
@@ -260,15 +260,6 @@ public class ModelBuildPropertyVisitor extends BaseTablePropertyVisitor {
       col.setCheckConstraintName(determineCheckConstraintName(col.getName()));
     }
 
-    String indexName = p.getIndexName();
-    if (indexName != null) {
-      // single column non-unique index
-      if (indexName.trim().isEmpty()) {
-        indexName = determineIndexName(col.getName());
-      }
-      ctx.addIndex(indexName, table.getName(), p.getDbColumn());
-    }
-
     lastColumn = col;
     table.addColumn(col);
 	}

src/main/java/com/avaje/ebean/event/BeanPersistAdapter.java

@@ -1,7 +1,5 @@
 package com.avaje.ebean.event;
 
-import java.util.Set;
-
 import com.avaje.ebean.config.ServerConfig;
 
 /**

src/main/java/com/avaje/ebean/event/BeanPersistController.java

@@ -1,7 +1,5 @@
 package com.avaje.ebean.event;
 
-import java.util.Set;
-
 /**
  * Used to enhance or override the default bean persistence mechanism.
  * <p>

src/main/java/com/avaje/ebean/event/BeanPostConstructListener.java

@@ -0,0 +1,41 @@
+package com.avaje.ebean.event;
+
+import com.avaje.ebean.EbeanServer;
+import com.avaje.ebeaninternal.server.deploy.BeanDescriptor;
+
+/**
+ * Fired after a bean is constructed, but not yet loaded from database.
+ * <p>
+ * Note: You MUST NOT set any default values, as in a following step, 
+ * properties will get unload. Use {@link BeanPostLoad} instead.
+ * 
+ * it's intended to do some dependency-injection here.
+ * If you plan to use this feature you should use {@link EbeanServer#createEntityBean(Class)}
+ * to create new beans.
+ * </p>
+ */
+public interface BeanPostConstructListener {
+
+  /**
+   * Return true if this BeanPostConstructListener instance should be registered
+   * for post construct on this entity type.
+   */
+  boolean isRegisterFor(Class<?> cls);
+
+  /**
+   * Called immediately after construction. Perform DI here.
+   */
+  void autowire(Object bean);
+  
+  /**
+   * Called after every &#64;PostConstruct annotated method of the bean is executed
+   */
+  void postConstruct(Object bean);
+  
+  /**
+   * Called after {@link EbeanServer#createEntityBean(Class)}. Only for new beans.
+   * intended to set default values here.
+   */
+  void postCreate(Object bean);
+
+}

src/main/java/com/avaje/ebean/event/TransactionEventListener.java

@@ -1,18 +0,0 @@
-package com.avaje.ebean.event;
-
-import com.avaje.ebean.Transaction;
-
-/**
- * Used to get notified about commit or rollback of a transaction
- */
-public interface TransactionEventListener {
-  /**
-   * Called after the transaction has been committed
-   */
-  void postTransactionCommit(Transaction tx);
-
-  /**
-   * Called after the transaction has been rolled back
-   */
-  void postTransactionRollback(Transaction tx, Throwable cause);
-}

src/main/java/com/avaje/ebean/event/TransactionEventListenerAdapter.java

@@ -1,18 +0,0 @@
-package com.avaje.ebean.event;
-
-import com.avaje.ebean.Transaction;
-
-/**
- * A no operation implementation of TransactionEventListener. Objects extending
- * this need to only override the methods they want to.
- */
-public abstract class TransactionEventListenerAdapter implements TransactionEventListener {
-
-  public void postTransactionCommit(Transaction tx) {
-    // do nothing by default
-  }
-
-  public void postTransactionRollback(Transaction tx, Throwable cause) {
-    // do nothing by default
-  }
-}

src/main/java/com/avaje/ebean/event/changelog/BeanChange.java

@@ -80,7 +80,7 @@ public class BeanChange {
    * Set the bean id (for JSON tools).
    */
   public void setId(Object id) {
-    this.id = this.id;
+    this.id = id;
   }
 
   /**

src/main/java/com/avaje/ebean/util/CamelCaseHelper.java

@@ -12,9 +12,12 @@ public class CamelCaseHelper {
    */
   public static String toCamelFromUnderscore(String underscore) {
 
-    StringBuilder result = new StringBuilder();
     String[] vals = underscore.split("_");
+    if (vals.length == 1) {
+      return underscore;
+    }
 
+    StringBuilder result = new StringBuilder();
     for (int i = 0; i < vals.length; i++) {
       String lower = vals[i].toLowerCase();
       if (i > 0) {

src/main/java/com/avaje/ebean/util/StringHelper.java

@@ -398,7 +398,7 @@ public class StringHelper {
       int additionalSize, int startPos, int endPos) {
 
     if (source == null) {
-      return source;
+      return null;
     }
 
     char match0 = match.charAt(0);

src/main/java/com/avaje/ebeaninternal/api/DerivedRelationshipData.java

@@ -1,27 +0,0 @@
-package com.avaje.ebeaninternal.api;
-
-public final class DerivedRelationshipData {
-
-	private final Object assocBean;
-	private final String logicalName;
-	private final Object bean;
-	
-	public DerivedRelationshipData(Object assocBean, String logicalName, Object bean) {
-	    this.assocBean = assocBean;
-	    this.logicalName = logicalName;
-	    this.bean = bean;
-    }
-	
-	public Object getAssocBean() {
-    	return assocBean;
-    }
-
-	public String getLogicalName() {
-    	return logicalName;
-	}
-
-	public Object getBean() {
-    	return bean;
-    }
-	
-}

src/main/java/com/avaje/ebeaninternal/api/LoadBeanRequest.java

@@ -169,8 +169,13 @@ public class LoadBeanRequest extends LoadRequest {
         EntityBeanIntercept ebi = batch.get(i);
         Object id = desc.getId(ebi.getOwner());
         if (!loadedIds.contains(id)) {
-          logger.info("Lazy loading unsuccessful for type:" + desc.getName() + " id:" + id + " - expecting when bean has been deleted");
-          ebi.setLazyLoadFailure(id);
+          if (desc.isSoftDelete()) {
+            // assume this is logically deleted (hence not found)
+            desc.setSoftDeleteValue(ebi.getOwner());
+          } else {
+            logger.info("Lazy loading unsuccessful for type:" + desc.getName() + " id:" + id + " - expecting when bean has been deleted");
+            ebi.setLazyLoadFailure(id);
+          }
         }
       }
     }

src/main/java/com/avaje/ebeaninternal/api/ManyWhereJoins.java

@@ -132,15 +132,11 @@ public class ManyWhereJoins implements Serializable {
     formulaProperties.append(propertyName);
   }
 
-  public boolean isHasMany() {
-    return formulaWithJoin || !joins.isEmpty();
-  }
-
   /**
-   * Return true if the findRowCount query just needs the id property in the select clause.
+   * Return true if the query select includes a formula with join.
    */
-  public boolean isSelectId() {
-    return !formulaWithJoin;
+  public boolean isFormulaWithJoin() {
+    return formulaWithJoin;
   }
 
   /**

src/main/java/com/avaje/ebeaninternal/api/ScopeTrans.java

@@ -181,6 +181,15 @@ public class ScopeTrans implements Thread.UncaughtExceptionHandler {
     return e;
   }
 
+  /**
+   * Mark the underlying transaction as rollback only.
+   */
+  public void setRollbackOnly() {
+    if (transaction != null) {
+      transaction.setRollbackOnly();
+    }
+  }
+
   /**
    * An Exception was caught and may or may not cause a rollback to occur.
    * Returns the exception and this should be thrown by the calling code.

src/main/java/com/avaje/ebeaninternal/api/ScopedTransaction.java

@@ -8,13 +8,13 @@ import com.avaje.ebean.event.changelog.BeanChange;
 import com.avaje.ebean.event.changelog.ChangeSet;
 import com.avaje.ebeaninternal.server.core.PersistRequest;
 import com.avaje.ebeaninternal.server.core.PersistRequestBean;
+import com.avaje.ebeaninternal.server.core.PersistDeferredRelationship;
 import com.avaje.ebeaninternal.server.persist.BatchControl;
 
 import javax.persistence.PersistenceException;
 import javax.persistence.RollbackException;
 import java.io.IOException;
 import java.sql.Connection;
-import java.util.List;
 
 /**
  * Wrapper of a ScopeTrans request and it's underlying transaction.
@@ -29,9 +29,13 @@ public class ScopedTransaction implements SpiTransaction {
 
   public ScopedTransaction(ScopeTrans scopeTrans) {
     this.scopeTrans = scopeTrans;
-    this.transaction =scopeTrans.getTransaction();
+    this.transaction = scopeTrans.getTransaction();
   }
 
+  @Override
+  public void commitAndContinue() throws RollbackException {
+    transaction.commitAndContinue();
+  }
 
   @Override
   public void commit() throws RollbackException {
@@ -49,6 +53,21 @@ public class ScopedTransaction implements SpiTransaction {
     scopeTrans.rollback(e);
   }
 
+  @Override
+  public void rollbackIfActive() {
+    transaction.rollbackIfActive();
+  }
+
+  @Override
+  public void setRollbackOnly() {
+    scopeTrans.setRollbackOnly();
+  }
+
+  @Override
+  public boolean isRollbackOnly() {
+    return transaction.isRollbackOnly();
+  }
+
   @Override
   public void end() throws PersistenceException {
     try {
@@ -126,13 +145,8 @@ public class ScopedTransaction implements SpiTransaction {
   }
 
   @Override
-  public void registerDerivedRelationship(DerivedRelationshipData assocBean) {
-    transaction.registerDerivedRelationship(assocBean);
-  }
-
-  @Override
-  public List<DerivedRelationshipData> getDerivedRelationship(Object bean) {
-    return transaction.getDerivedRelationship(bean);
+  public void registerDeferred(PersistDeferredRelationship derived) {
+    transaction.registerDeferred(derived);
   }
 
   @Override

src/main/java/com/avaje/ebeaninternal/api/SpiEbeanServer.java

@@ -145,7 +145,7 @@ public interface SpiEbeanServer extends EbeanServer, BeanLoader, BeanCollectionL
    * the query has finished (if executing in a background thread).
    * </p>
    */
-  <T> List<Object> findIdsWithCopy(Query<T> query, Transaction t);
+  <A> List<A> findIdsWithCopy(Query<?> query, Transaction t);
 
   /**
    * Execute the findRowCount query but without copying the query.

src/main/java/com/avaje/ebeaninternal/api/SpiExpression.java

@@ -13,7 +13,12 @@ import java.io.IOException;
  */
 public interface SpiExpression extends Expression {
 
-  /**
+	/**
+	 * Simplify nested expressions if possible.
+	 */
+	void simplify();
+
+	/**
    * Write the expression as an elastic search expression.
    */
   void writeDocQuery(DocQueryContext context) throws IOException;

src/main/java/com/avaje/ebeaninternal/api/SpiNamedParam.java

@@ -0,0 +1,6 @@
+package com.avaje.ebeaninternal.api;
+
+public interface SpiNamedParam {
+
+  Object getValue();
+}

src/main/java/com/avaje/ebeaninternal/api/SpiQuery.java

@@ -78,6 +78,11 @@ public interface SpiQuery<T> extends Query<T> {
      */
     ID_LIST,
 
+    /**
+     * Find single attribute.
+     */
+    ATTRIBUTE,
+
     /**
      * Find rowCount.
      */
@@ -222,6 +227,16 @@ public interface SpiQuery<T> extends Query<T> {
    */
   Timestamp getAsOf();
 
+  /**
+   * Return true if the base table is using history.
+   */
+  boolean isAsOfBaseTable();
+
+  /**
+   * Set when the base table is using history.
+   */
+  void setAsOfBaseTable();
+
   /**
    * Increment the counter of tables used in 'As Of' query.
    */
@@ -236,21 +251,6 @@ public interface SpiQuery<T> extends Query<T> {
 
   List<String> getSoftDeletePredicates();
 
-  /**
-   * Set the list of Id's that is being populated.
-   * <p>
-   * This is a mutating list of id's and we are setting this so that other
-   * threads have access to the id's before the id query has finished.
-   * </p>
-   */
-  void setIdList(List<Object> ids);
-
-  /**
-   * Return the list of Id's that is currently being fetched by a background
-   * thread.
-   */
-  List<Object> getIdList();
-
   /**
    * Return a copy of the query.
    */
@@ -296,6 +296,16 @@ public interface SpiQuery<T> extends Query<T> {
    */
   void setLoadDescription(String loadMode, String loadDescription);
 
+  /**
+   * Check that the named parameters have had their values set.
+   */
+  void checkNamedParameters();
+
+  /**
+   * Create a named parameter placeholder.
+   */
+  SpiNamedParam createNamedParameter(String parameterName);
+
   /**
    * Return the joins required to support predicates on the many properties.
    */
@@ -321,6 +331,24 @@ public interface SpiQuery<T> extends Query<T> {
    */
   void setSelectId();
 
+  /**
+   * Mark the query as selecting a single attribute.
+   */
+  void setSingleAttribute();
+
+  /**
+   * Return true if this is singleAttribute query.
+   */
+  boolean isSingleAttribute();
+
+  /**
+   * Return true if the query should include the Id property.
+   * <p>
+   * distinct and single attribute queries exclude the Id property.
+   * </p>
+   */
+  boolean isWithId();
+
   /**
    * Set a filter to a join path.
    */
@@ -542,12 +570,6 @@ public interface SpiQuery<T> extends Query<T> {
    */
   BindParams getBindParams();
 
-  /**
-   * Get the orm query as a String. Only available if the query was built from
-   * a string.
-   */
-  String getQuery();
-
   /**
    * Replace the query detail. This is used by the AutoTune feature to as a
    * fast way to set the query properties and joins.
@@ -564,6 +586,11 @@ public interface SpiQuery<T> extends Query<T> {
    */
   boolean tuneFetchProperties(OrmQueryDetail detail);
 
+  /**
+   * If this is a RawSql based entity set the default RawSql if not set.
+   */
+  void setDefaultRawSqlIfRequired();
+
   /**
    * Set to true if this query has been tuned by autoTune.
    */
@@ -574,9 +601,15 @@ public interface SpiQuery<T> extends Query<T> {
    */
   OrmQueryDetail getDetail();
 
-  TableJoin getIncludeTableJoin();
+  /**
+   * Return the extra join for a M2M lazy load.
+   */
+  TableJoin getM2mIncludeJoin();
 
-  void setIncludeTableJoin(TableJoin includeTableJoin);
+  /**
+   * Set the extra join for a M2M lazy load.
+   */
+  void setM2MIncludeJoin(TableJoin includeTableJoin);
 
   /**
    * Return the property used to specify keys for a map.
@@ -625,6 +658,11 @@ public interface SpiQuery<T> extends Query<T> {
    */
   void setGeneratedSql(String generatedSql);
 
+  /**
+   * Set the JDBC fetchSize buffer hint if not explicitly set.
+   */
+  void setDefaultFetchBuffer(int fetchSize);
+
   /**
    * Return the hint for Statement.setFetchSize().
    */
@@ -681,4 +719,8 @@ public interface SpiQuery<T> extends Query<T> {
    */
   OrmUpdateProperties getUpdateProperties();
 
+  /**
+   * Simplify nested expression lists where possible.
+   */
+  void simplifyExpressions();
 }

src/main/java/com/avaje/ebeaninternal/api/SpiTransaction.java

@@ -7,10 +7,10 @@ import com.avaje.ebean.event.changelog.BeanChange;
 import com.avaje.ebean.event.changelog.ChangeSet;
 import com.avaje.ebeaninternal.server.core.PersistRequest;
 import com.avaje.ebeaninternal.server.core.PersistRequestBean;
+import com.avaje.ebeaninternal.server.core.PersistDeferredRelationship;
 import com.avaje.ebeaninternal.server.persist.BatchControl;
 
 import java.sql.Connection;
-import java.util.List;
 
 /**
  * Extends Transaction with additional API required on server.
@@ -48,15 +48,9 @@ public interface SpiTransaction extends Transaction {
   void logSummary(String msg);
 
   /**
-   * Register a "Derived Relationship" (that requires an additional update).
+   * Register a "Deferred Relationship" that requires an additional update later.
    */
-  void registerDerivedRelationship(DerivedRelationshipData assocBean);
-
-  /**
-   * Return the list of "Derived Relationships" that must be maintained after
-   * insert.
-   */
-  List<DerivedRelationshipData> getDerivedRelationship(Object bean);
+  void registerDeferred(PersistDeferredRelationship derived);
 
   /**
    * Add a deleting bean to the registered list.
@@ -220,6 +214,12 @@ public interface SpiTransaction extends Transaction {
    */
   Connection getInternalConnection();
 
+  /**
+   * Rollback if the transaction is active. This provides an internal
+   * mechanism for rollback failures occur on commit().
+   */
+  void rollbackIfActive();
+
   /**
    * Return true if the manyToMany intersection should be persisted for this particular relationship direction.
    */

src/main/java/com/avaje/ebeaninternal/server/autotune/service/AutoTuneXmlReader.java

@@ -19,8 +19,7 @@ public class AutoTuneXmlReader {
   /**
    * Read and return a Profiling from an xml file.
    */
-  public Autotune read(File file) {
-
+  public static Autotune read(File file) {
     try {
       return readFile(file);
     } catch (IOException e) {
@@ -28,7 +27,7 @@ public class AutoTuneXmlReader {
     }
   }
 
-  protected Autotune readFile(File file) throws IOException {
+  protected static Autotune readFile(File file) throws IOException {
     if (!file.exists()) {
       return new Autotune();
     }
@@ -43,8 +42,7 @@ public class AutoTuneXmlReader {
   /**
    * Read and return a Profiling from an xml document.
    */
-  public Autotune read(InputStream is) {
-
+  public static Autotune read(InputStream is) {
     try {
       JAXBContext jaxbContext = JAXBContext.newInstance(Autotune.class);
       Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();

src/main/java/com/avaje/ebeaninternal/server/autotune/service/DefaultAutoTuneService.java

@@ -12,6 +12,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.io.File;
+import java.io.InputStream;
 import java.util.concurrent.TimeUnit;
 
 /**
@@ -101,19 +102,26 @@ public class DefaultAutoTuneService implements AutoTuneService {
    */
   private void loadTuningFile() {
     File file = new File(tuningFile);
-    if (!file.exists()) {
-      logger.warn("AutoTune file {} not found - no initial automatic query tuning", file.getAbsolutePath());
-
+    if (file.exists()) {
+      loadAutoTuneProfiling(AutoTuneXmlReader.read(file));
     } else {
-      AutoTuneXmlReader reader = new AutoTuneXmlReader();
-      Autotune profiling = reader.read(file);
-      logger.info("AutoTune loading {} tuning entries", profiling.getOrigin().size());
-      for (Origin origin : profiling.getOrigin()) {
-        queryTuner.put(origin);
+      // look for autotune as a resource
+      InputStream stream = getClass().getResourceAsStream("/" + tuningFile);
+      if (stream != null) {
+        loadAutoTuneProfiling(AutoTuneXmlReader.read(stream));
+      } else {
+        logger.warn("AutoTune file {} not found - no initial automatic query tuning", tuningFile);
       }
     }
   }
 
+  private void loadAutoTuneProfiling(Autotune profiling) {
+    logger.info("AutoTune loading {} tuning entries", profiling.getOrigin().size());
+    for (Origin origin : profiling.getOrigin()) {
+      queryTuner.put(origin);
+    }
+  }
+
   /**
    * Collect profiling, check for new/diff to existing tuning and apply changes.
    */

src/main/java/com/avaje/ebeaninternal/server/autotune/service/ProfileOriginNodeUsage.java

@@ -45,9 +45,8 @@ public class ProfileOriginNodeUsage {
       if (path != null) {
         ElPropertyValue elGetValue = rootDesc.getElGetValue(path);
         if (elGetValue == null) {
-          desc = null;
           logger.warn("AutoTune: Can't find join for path[" + path + "] for " + rootDesc.getName());
-
+          return;
         } else {
           BeanProperty beanProperty = elGetValue.getBeanProperty();
           if (beanProperty instanceof BeanPropertyAssoc<?>) {

src/main/java/com/avaje/ebeaninternal/server/cache/CachedManyIds.java

@@ -4,7 +4,6 @@ import java.io.Externalizable;
 import java.io.IOException;
 import java.io.ObjectInput;
 import java.io.ObjectOutput;
-import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.List;
 

src/main/java/com/avaje/ebeaninternal/server/cache/DefaultServerCache.java

@@ -1,7 +1,6 @@
 package com.avaje.ebeaninternal.server.cache;
 
 import com.avaje.ebean.BackgroundExecutor;
-import com.avaje.ebean.EbeanServer;
 import com.avaje.ebean.cache.ServerCache;
 import com.avaje.ebean.cache.ServerCacheOptions;
 import com.avaje.ebean.cache.ServerCacheStatistics;

src/main/java/com/avaje/ebeaninternal/server/changelog/DefaultChangeLogRegister.java

@@ -5,6 +5,7 @@ import com.avaje.ebean.annotation.ChangeLogInsertMode;
 import com.avaje.ebean.event.BeanPersistRequest;
 import com.avaje.ebean.event.changelog.ChangeLogFilter;
 import com.avaje.ebean.event.changelog.ChangeLogRegister;
+import com.avaje.ebeaninternal.server.deploy.parse.AnnotationBase;
 
 import java.util.HashSet;
 import java.util.Set;
@@ -52,14 +53,7 @@ public class DefaultChangeLogRegister implements ChangeLogRegister {
    * Find and return the ChangeLog annotation in the inheritance hierarchy.
    */
   private ChangeLog getChangeLog(Class<?> beanType) {
-    ChangeLog changeLog = beanType.getAnnotation(ChangeLog.class);
-    if (changeLog != null) {
-      return changeLog;
-    }
-    if (Object.class.equals(beanType.getSuperclass())) {
-      return null;
-    }
-    return getChangeLog(beanType.getSuperclass());
+    return AnnotationBase.findAnnotation(beanType, ChangeLog.class);
   }
 
   /**

src/main/java/com/avaje/ebeaninternal/server/core/BasicTypeConverter.java

@@ -150,6 +150,9 @@ public final class BasicTypeConverter implements Serializable {
     if (value instanceof Boolean) {
       return (Boolean) value;
     }
+    if (value instanceof Number) {
+      return ((Number)value).intValue() == 1;
+    }
     String s = value.toString();
     return s.equalsIgnoreCase(dbTrueValue);
   }

src/main/java/com/avaje/ebeaninternal/server/core/BeanRequest.java

@@ -68,11 +68,11 @@ public abstract class BeanRequest {
   public void rollbackTransIfRequired() {
     if (createdTransaction) {
       try {
-        transaction.rollback();
+        transaction.rollbackIfActive();
       } catch (Exception e) {
         // Just log this and carry on. A previous exception has been
         // thrown and if this rollback throws exception it likely means
-        // that the connection is broken (and the datasource and db will cleanup)
+        // that the connection is broken (and the dataSource and db will cleanup)
         log.error("Error trying to rollback a transaction (after a prior exception thrown)", e);
       }
     }

src/main/java/com/avaje/ebeaninternal/server/core/DefaultBackgroundExecutor.java

@@ -1,35 +1,25 @@
 package com.avaje.ebeaninternal.server.core;
 
-import java.util.concurrent.TimeUnit;
-
 import com.avaje.ebeaninternal.api.SpiBackgroundExecutor;
+import com.avaje.ebeaninternal.server.lib.DaemonExecutorService;
 import com.avaje.ebeaninternal.server.lib.DaemonScheduleThreadPool;
-import com.avaje.ebeaninternal.server.lib.DaemonThreadPool;
+
+import java.util.concurrent.TimeUnit;
 
 /**
  * The default implementation of the BackgroundExecutor.
  */
 public class DefaultBackgroundExecutor implements SpiBackgroundExecutor {
 
-	private final DaemonThreadPool pool;
-	
 	private final DaemonScheduleThreadPool schedulePool;
 
+  private final DaemonExecutorService pool;
+
   /**
    * Construct the default implementation of BackgroundExecutor.
-   *
-   * @param corePoolSize
-   *            the core size of the thread pool.
-   * @param maximumPoolSize
-   *            the maximum pool size before jobs are queued
-   * @param keepAliveSecs
-   *            the time in seconds idle threads are keep alive
-   * @param shutdownWaitSeconds
-   *            the time in seconds allowed for the pool to shutdown nicely.
-   *            After this the pool is forced to shutdown.
    */
-	public DefaultBackgroundExecutor(int schedulePoolSize, int corePoolSize, int maximumPoolSize, long keepAliveSecs,int shutdownWaitSeconds, String namePrefix) {
-		this.pool = new DaemonThreadPool(corePoolSize, maximumPoolSize, keepAliveSecs, shutdownWaitSeconds, namePrefix);
+	public DefaultBackgroundExecutor(int schedulePoolSize, int shutdownWaitSeconds, String namePrefix) {
+		this.pool = new DaemonExecutorService(shutdownWaitSeconds, namePrefix);
 		this.schedulePool = new DaemonScheduleThreadPool(schedulePoolSize, shutdownWaitSeconds, namePrefix+"-periodic-");
 	}
 

src/main/java/com/avaje/ebeaninternal/server/core/DefaultBeanState.java

@@ -14,14 +14,14 @@ import java.util.Set;
  */
 public class DefaultBeanState implements BeanState {
 
-	private final EntityBean entityBean;
-	
-	private final EntityBeanIntercept intercept;
-	
-	public DefaultBeanState(EntityBean  entityBean){
-		this.entityBean = entityBean;
-		this.intercept = entityBean._ebean_getIntercept();
-	}
+  private final EntityBean entityBean;
+
+  private final EntityBeanIntercept intercept;
+
+  public DefaultBeanState(EntityBean entityBean) {
+    this.entityBean = entityBean;
+    this.intercept = entityBean._ebean_getIntercept();
+  }
 
   public void setPropertyLoaded(String propertyName, boolean loaded) {
     intercept.setPropertyLoaded(propertyName, loaded);
@@ -31,52 +31,62 @@ public class DefaultBeanState implements BeanState {
     return intercept.isReference();
   }
 
-	public boolean isNew() {
-		return intercept.isNew();
-	}
-
-	public boolean isNewOrDirty() {
-		return intercept.isNewOrDirty();
-	}
-
-	public boolean isDirty() {
-		return intercept.isDirty();
-	}
-	
-	public Set<String> getLoadedProps() {
-	  return intercept.getLoadedPropertyNames();
-	}
-	
-	public Set<String> getChangedProps() {
-	  return intercept.getDirtyPropertyNames();
+  public boolean isNew() {
+    return intercept.isNew();
   }
-	
-  public Map<String,ValuePair> getDirtyValues() {
+
+  public boolean isNewOrDirty() {
+    return intercept.isNewOrDirty();
+  }
+
+  public boolean isDirty() {
+    return intercept.isDirty();
+  }
+
+  public Set<String> getLoadedProps() {
+    return intercept.getLoadedPropertyNames();
+  }
+
+  public Set<String> getChangedProps() {
+    return intercept.getDirtyPropertyNames();
+  }
+
+  public Map<String, ValuePair> getDirtyValues() {
     return intercept.getDirtyValues();
   }
-	
-	public boolean isReadOnly() {
-		return intercept.isReadOnly();
-	}
-	
-	public void setReadOnly(boolean readOnly){
-		intercept.setReadOnly(readOnly);
-	}
-	
-	public void addPropertyChangeListener(PropertyChangeListener listener) {
-		entityBean.addPropertyChangeListener(listener);
-	}
-	
-	public void removePropertyChangeListener(PropertyChangeListener listener) {
-		entityBean.removePropertyChangeListener(listener);
-	}
 
-	public void setLoaded() {
-	  intercept.setLoaded();
-	}
+  public boolean isReadOnly() {
+    return intercept.isReadOnly();
+  }
+
+  public void setReadOnly(boolean readOnly) {
+    intercept.setReadOnly(readOnly);
+  }
+
+  public void addPropertyChangeListener(PropertyChangeListener listener) {
+    entityBean.addPropertyChangeListener(listener);
+  }
+
+  public void removePropertyChangeListener(PropertyChangeListener listener) {
+    entityBean.removePropertyChangeListener(listener);
+  }
+
+  public void setLoaded() {
+    intercept.setLoaded();
+  }
 
   @Override
   public void setDisableLazyLoad(boolean disableLazyLoading) {
     intercept.setDisableLazyLoad(disableLazyLoading);
   }
+
+  @Override
+  public boolean isDisableLazyLoad() {
+    return intercept.isDisableLazyLoad();
+  }
+
+  @Override
+  public void resetForInsert() {
+    intercept.setNew();
+  }
 }

src/main/java/com/avaje/ebeaninternal/server/core/DefaultContainer.java

@@ -78,14 +78,10 @@ public class DefaultContainer implements SpiContainer {
   private SpiBackgroundExecutor createBackgroundExecutor(ServerConfig serverConfig) {
 
     String namePrefix = "ebean-" + serverConfig.getName();
-
     int schedulePoolSize = serverConfig.getBackgroundExecutorSchedulePoolSize();
-    int corePoolSize = serverConfig.getBackgroundExecutorCorePoolSize();
-    int maxPoolSize = serverConfig.getBackgroundExecutorMaxPoolSize();
-    int idleSecs = serverConfig.getBackgroundExecutorIdleSecs();
     int shutdownSecs = serverConfig.getBackgroundExecutorShutdownSecs();
 
-    return new DefaultBackgroundExecutor(schedulePoolSize, corePoolSize, maxPoolSize, idleSecs, shutdownSecs, namePrefix);
+    return new DefaultBackgroundExecutor(schedulePoolSize, shutdownSecs, namePrefix);
   }
 
   /**
@@ -122,22 +118,20 @@ public class DefaultContainer implements SpiContainer {
 
       // generate and run DDL if required
       // if there are any other tasks requiring action in their plugins, do them as well
-      if (!DbOffline.isRunningMigration()) {
+      if (!DbOffline.isGenerateMigration()) {
         server.executePlugins(online);
-      }
 
-      // initialise prior to registering with clusterManager
-      server.initialise();
-
-      if (online) {
-        if (clusterManager.isClustering()) {
-          // register the server once it has been created
-          clusterManager.registerServer(server);
+        // initialise prior to registering with clusterManager
+        server.initialise();
+        if (online) {
+          if (clusterManager.isClustering()) {
+            // register the server once it has been created
+            clusterManager.registerServer(server);
+          }
         }
+        // start any services after registering with clusterManager
+        server.start();
       }
-
-      // start any services after registering with clusterManager
-      server.start();
       DbOffline.reset();
       return server;
     }
@@ -200,8 +194,8 @@ public class DefaultContainer implements SpiContainer {
     bootup.addIdGenerators(serverConfig.getIdGenerators());
     bootup.addPersistControllers(serverConfig.getPersistControllers());
     bootup.addPostLoaders(serverConfig.getPostLoaders());
+    bootup.addPostConstructListeners(serverConfig.getPostConstructListeners());
     bootup.addFindControllers(serverConfig.getFindControllers());
-    bootup.addTransactionEventListeners(serverConfig.getTransactionEventListeners());
     bootup.addPersistListeners(serverConfig.getPersistListeners());
     bootup.addQueryAdapters(serverConfig.getQueryAdapters());
     bootup.addServerConfigStartup(serverConfig.getServerConfigStartupListeners());
@@ -244,7 +238,7 @@ public class DefaultContainer implements SpiContainer {
     if (dbPlatform == null) {
       DatabasePlatformFactory factory = new DatabasePlatformFactory();
       DatabasePlatform db = factory.create(config);
-      db.configure(config.getProperties());
+      db.configure(config);
       config.setDatabasePlatform(db);
       logger.info("DatabasePlatform name:" + config.getName() + " platform:" + db.getName());
     }

src/main/java/com/avaje/ebeaninternal/server/core/DefaultServer.java

@@ -40,6 +40,7 @@ import com.avaje.ebeaninternal.server.deploy.BeanDescriptorManager;
 import com.avaje.ebeaninternal.server.deploy.BeanProperty;
 import com.avaje.ebeaninternal.server.deploy.InheritInfo;
 import com.avaje.ebeaninternal.server.el.ElFilter;
+import com.avaje.ebeaninternal.server.grammer.EqlParser;
 import com.avaje.ebeaninternal.server.lib.ShutdownManager;
 import com.avaje.ebeaninternal.server.query.CQuery;
 import com.avaje.ebeaninternal.server.query.CQueryEngine;
@@ -70,10 +71,8 @@ import javax.persistence.NonUniqueResultException;
 import javax.persistence.OptimisticLockException;
 import javax.persistence.PersistenceException;
 import javax.sql.DataSource;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
@@ -524,7 +523,7 @@ public final class DefaultServer implements SpiServer, SpiEbeanServer {
   @SuppressWarnings("unchecked")
   public <T> T createEntityBean(Class<T> type) {
     BeanDescriptor<T> desc = getBeanDescriptor(type);
-    return (T) desc.createEntityBean();
+    return (T) desc.createEntityBean(true);
   }
 
   /**
@@ -557,7 +556,7 @@ public final class DefaultServer implements SpiServer, SpiEbeanServer {
 
     InheritInfo inheritInfo = desc.getInheritInfo();
     if (inheritInfo == null) {
-      return (T)desc.contextRef(pc, null, id);
+      return (T)desc.contextRef(pc, null, false, id);
     }
 
     BeanProperty idProp = desc.getIdProperty();
@@ -683,6 +682,9 @@ public final class DefaultServer implements SpiServer, SpiEbeanServer {
     if (txScope == null) {
       // create a TxScope with default settings
       txScope = new TxScope();
+    } else {
+      // check for implied batch mode via setting batchSize
+      txScope.checkBatchMode();
     }
 
     SpiTransaction suspended = null;
@@ -884,6 +886,32 @@ public final class DefaultServer implements SpiServer, SpiEbeanServer {
     return createQuery(beanType);
   }
 
+  @Override
+  public <T> Query<T> createNamedQuery(Class<T> beanType, String namedQuery) {
+    BeanDescriptor<T> desc = getBeanDescriptor(beanType);
+    if (desc == null) {
+      throw new PersistenceException(beanType.getName() + " is NOT an Entity Bean registered with this server?");
+    }
+    String named = desc.getNamedQuery(namedQuery);
+    if (named != null) {
+      return createQuery(beanType, named);
+    }
+    RawSql rawSql = desc.getNamedRawSql(namedQuery);
+    if (rawSql != null) {
+      DefaultOrmQuery<T> query = createQuery(beanType);
+      query.setRawSql(rawSql);
+      return query;
+    }
+    throw new PersistenceException("No named query called " + namedQuery + " for bean:" + beanType.getName());
+  }
+
+  @Override
+  public <T> Query<T> createQuery(Class<T> beanType, String eql) {
+    DefaultOrmQuery<T> query = createQuery(beanType);
+    EqlParser.parse(eql, query);
+    return query;
+  }
+
   public <T> DefaultOrmQuery<T> createQuery(Class<T> beanType) {
     BeanDescriptor<T> desc = getBeanDescriptor(beanType);
     if (desc == null) {
@@ -936,12 +964,14 @@ public final class DefaultServer implements SpiServer, SpiEbeanServer {
 
     SpiQuery<T> spiQuery = (SpiQuery<T>) query;
     spiQuery.setType(type);
+    spiQuery.checkNamedParameters();
 
     return createQueryRequest(spiQuery, t);
   }
 
   private <T> SpiOrmQueryRequest<T> createQueryRequest(SpiQuery<T> query, Transaction t) {
 
+    query.setDefaultRawSqlIfRequired();
     if (query.isAutoTunable() && !autoTuneService.tuneQuery(query)) {
       // use deployment FetchType.LAZY/EAGER annotations
       // to define the 'default' select clause
@@ -1102,30 +1132,52 @@ public final class DefaultServer implements SpiServer, SpiEbeanServer {
   }
 
   @SuppressWarnings({ "unchecked", "rawtypes" })
-  public <T> Map<?, T> findMap(Query<T> query, Transaction t) {
+  public <K, T> Map<K, T> findMap(Query<T> query, Transaction t) {
 
     SpiOrmQueryRequest request = createQueryRequest(Type.MAP, query, t);
 
     Object result = request.getFromQueryCache();
     if (result != null) {
-      return (Map<?, T>) result;
+      return (Map<K, T>) result;
     }
 
     try {
       request.initTransIfRequired();
-      return (Map<?, T>) request.findMap();
+      return (Map<K, T>) request.findMap();
 
     } finally {
       request.endTransIfRequired();
     }
   }
 
-  public <T> int findRowCount(Query<T> query, Transaction t) {
+  @Override
+  @SuppressWarnings("unchecked")
+  public <A> List<A> findSingleAttributeList(Query<?> query, Transaction t) {
+
+    SpiOrmQueryRequest request = createQueryRequest(Type.ATTRIBUTE, query, t);
+    Object result = request.getFromQueryCache();
+    if (result != null) {
+      return (List<A>) result;
+    }
+    try {
+      request.initTransIfRequired();
+      return (List<A>) request.findSingleAttributeList();
+
+    } finally {
+      request.endTransIfRequired();
+    }
+  }
+
+  public <T> int findCount(Query<T> query, Transaction t) {
 
     SpiQuery<T> copy = ((SpiQuery<T>) query).copy();
     return findRowCountWithCopy(copy, t);
   }
 
+  public <T> int findRowCount(Query<T> query, Transaction t) {
+    return findCount(query, t);
+  }
+
   public <T> int findRowCountWithCopy(Query<T> query, Transaction t) {
 
     SpiOrmQueryRequest<T> request = createQueryRequest(Type.ROWCOUNT, query, t);
@@ -1138,16 +1190,14 @@ public final class DefaultServer implements SpiServer, SpiEbeanServer {
     }
   }
 
-  public <T> List<Object> findIds(Query<T> query, Transaction t) {
+  public <A> List<A> findIds(Query<?> query, Transaction t) {
 
-    SpiQuery<T> copy = ((SpiQuery<T>) query).copy();
-
-    return findIdsWithCopy(copy, t);
+    return findIdsWithCopy(((SpiQuery<?>) query).copy(), t);
   }
 
-  public <T> List<Object> findIdsWithCopy(Query<T> query, Transaction t) {
+  public <A> List<A> findIdsWithCopy(Query<?> query, Transaction t) {
 
-    SpiOrmQueryRequest<T> request = createQueryRequest(Type.ID_LIST, query, t);
+    SpiOrmQueryRequest<?> request = createQueryRequest(Type.ID_LIST, query, t);
     try {
       request.initTransIfRequired();
       return request.findIds();
@@ -1181,7 +1231,7 @@ public final class DefaultServer implements SpiServer, SpiEbeanServer {
     }
   }
 
-  public <T> FutureRowCount<T> findFutureRowCount(Query<T> q, Transaction t) {
+  public <T> FutureRowCount<T> findFutureCount(Query<T> q, Transaction t) {
 
     SpiQuery<T> copy = ((SpiQuery<T>) q).copy();
     copy.setFutureFetch(true);
@@ -1196,17 +1246,15 @@ public final class DefaultServer implements SpiServer, SpiEbeanServer {
     return queryFuture;
   }
 
+  public <T> FutureRowCount<T> findFutureRowCount(Query<T> q, Transaction t) {
+    return findFutureCount(q, t);
+  }
+
   public <T> FutureIds<T> findFutureIds(Query<T> query, Transaction t) {
 
     SpiQuery<T> copy = ((SpiQuery<T>) query).copy();
     copy.setFutureFetch(true);
 
-    // this is the list we will put the id's in ... create it now so
-    // it is available for other threads to read while the id query
-    // is still executing (we don't need to wait for it to finish)
-    List<Object> idList = Collections.synchronizedList(new ArrayList<Object>());
-    copy.setIdList(idList);
-
     Transaction newTxn = createTransaction();
 
     CallableQueryIds<T> call = new CallableQueryIds<T>(this, copy, newTxn);
@@ -1254,6 +1302,19 @@ public final class DefaultServer implements SpiServer, SpiEbeanServer {
     return new LimitOffsetPagedList<T>(this, spiQuery);
   }
 
+  public <T> QueryIterator<T> findIterate(Query<T> query, Transaction t) {
+
+    SpiOrmQueryRequest<T> request = createQueryRequest(Type.ITERATE, query, t);
+    try {
+      request.initTransIfRequired();
+      return request.findIterate();
+
+    } catch (RuntimeException ex) {
+      request.endTransIfRequired();
+      throw ex;
+    }
+  }
+
   public <T> void findEach(Query<T> query, QueryEachConsumer<T> consumer, Transaction t) {
 
     SpiOrmQueryRequest<T> request = createQueryRequest(Type.ITERATE, query, t);

src/main/java/com/avaje/ebeaninternal/server/core/InternalConfiguration.java

@@ -137,7 +137,7 @@ public class InternalConfiguration {
 
     this.dataTimeZone = initDataTimeZone();
     this.binder = getBinder(typeManager, databasePlatform, dataTimeZone);
-    this.cQueryEngine = new CQueryEngine(databasePlatform, binder, asOfTableMapping, serverConfig.getAsOfSysPeriod(), draftTableMap);
+    this.cQueryEngine = new CQueryEngine(serverConfig, databasePlatform, binder, asOfTableMapping, draftTableMap);
   }
 
   /**
@@ -340,14 +340,14 @@ public class InternalConfiguration {
 
     boolean localL2 = cacheManager.isLocalL2Caching();
     if (serverConfig.isExplicitTransactionBeginMode()) {
-      return new ExplicitTransactionManager(localL2, serverConfig, clusterManager, backgroundExecutor, indexUpdateProcessor, beanDescriptorManager, this.getBootupClasses());
+      return new ExplicitTransactionManager(localL2, serverConfig, clusterManager, backgroundExecutor, indexUpdateProcessor, beanDescriptorManager);
     }
 
     if (isAutoCommitMode()) {
-      return new AutoCommitTransactionManager(localL2, serverConfig, clusterManager, backgroundExecutor, indexUpdateProcessor, beanDescriptorManager, this.getBootupClasses());
+      return new AutoCommitTransactionManager(localL2, serverConfig, clusterManager, backgroundExecutor, indexUpdateProcessor, beanDescriptorManager);
     }
 
-    return new TransactionManager(localL2, serverConfig, clusterManager, backgroundExecutor, indexUpdateProcessor, beanDescriptorManager, this.getBootupClasses());
+    return new TransactionManager(localL2, serverConfig, clusterManager, backgroundExecutor, indexUpdateProcessor, beanDescriptorManager);
   }
 
   /**

src/main/java/com/avaje/ebeaninternal/server/core/OrmQueryEngine.java

@@ -1,8 +1,8 @@
 package com.avaje.ebeaninternal.server.core;
 
+import com.avaje.ebean.QueryIterator;
 import com.avaje.ebean.Version;
 import com.avaje.ebean.bean.BeanCollection;
-import com.avaje.ebeaninternal.api.BeanIdList;
 
 import java.util.List;
 
@@ -21,6 +21,14 @@ public interface OrmQueryEngine {
    */
   <T> BeanCollection<T> findMany(OrmQueryRequest<T> request);
 
+  /**
+   * Execute the findSingleAttributeList query.
+   */
+  <A> List<A> findSingleAttributeList(OrmQueryRequest<?> request);
+
+  /**
+   * Execute the findVersions query.
+   */
   <T> List<Version<T>> findVersions(OrmQueryRequest<T> request);
 
   /**
@@ -36,7 +44,7 @@ public interface OrmQueryEngine {
   /**
    * Execute the find id's query.
    */
-  <T> BeanIdList findIds(OrmQueryRequest<T> request);
+  <A> List<A> findIds(OrmQueryRequest<?> request);
 
   /**
    * Execute the query as a delete statement.

src/main/java/com/avaje/ebeaninternal/server/core/OrmQueryRequest.java

@@ -3,6 +3,7 @@ package com.avaje.ebeaninternal.server.core;
 import com.avaje.ebean.PersistenceContextScope;
 import com.avaje.ebean.QueryEachConsumer;
 import com.avaje.ebean.QueryEachWhileConsumer;
+import com.avaje.ebean.QueryIterator;
 import com.avaje.ebean.RawSql;
 import com.avaje.ebean.Version;
 import com.avaje.ebean.bean.BeanCollection;
@@ -12,7 +13,6 @@ import com.avaje.ebean.event.BeanFindController;
 import com.avaje.ebean.event.BeanQueryAdapter;
 import com.avaje.ebean.event.BeanQueryRequest;
 import com.avaje.ebean.text.json.JsonReadOptions;
-import com.avaje.ebeaninternal.api.BeanIdList;
 import com.avaje.ebeaninternal.api.CQueryPlanKey;
 import com.avaje.ebeaninternal.api.HashQuery;
 import com.avaje.ebeaninternal.api.LoadContext;
@@ -304,9 +304,8 @@ public final class OrmQueryRequest<T> extends BeanRequest implements BeanQueryRe
     return queryEngine.findRowCount(this);
   }
 
-  public List<Object> findIds() {
-    BeanIdList idList = queryEngine.findIds(this);
-    return idList.getIdList();
+  public <A> List<A> findIds() {
+    return queryEngine.findIds(this);
   }
 
   public void findEach(QueryEachConsumer<T> consumer) {
@@ -373,6 +372,14 @@ public final class OrmQueryRequest<T> extends BeanRequest implements BeanQueryRe
     return (Map<?, ?>) queryEngine.findMany(this);
   }
 
+  /**
+   * Execute the findSingleAttributeList query.
+   */
+  @Override
+  public <A> List<A> findSingleAttributeList() {
+    return queryEngine.findSingleAttributeList(this);
+  }
+
   /**
    * Return a bean specific finder if one has been set.
    */
@@ -520,4 +527,11 @@ public final class OrmQueryRequest<T> extends BeanRequest implements BeanQueryRe
   public String getBaseTableAlias() {
     return query.getAlias() == null ? beanDescriptor.getBaseTableAlias() : query.getAlias();
   }
+
+  /**
+   * Set the JDBC buffer fetchSize hint if not set explicitly.
+   */
+  public void setDefaultFetchBuffer(int fetchSize) {
+    query.setDefaultFetchBuffer(fetchSize);
+  }
 }

src/main/java/com/avaje/ebeaninternal/server/core/PersistDeferredRelationship.java

@@ -0,0 +1,53 @@
+package com.avaje.ebeaninternal.server.core;
+
+import com.avaje.ebean.SqlUpdate;
+import com.avaje.ebean.bean.EntityBean;
+import com.avaje.ebeaninternal.api.SpiEbeanServer;
+import com.avaje.ebeaninternal.api.SpiTransaction;
+import com.avaje.ebeaninternal.server.deploy.BeanDescriptor;
+import com.avaje.ebeaninternal.server.deploy.id.ImportedId;
+
+/**
+ * Deferred update of a relationship where an Id value is not initially available
+ * so instead we execute this later as a SqlUpdate statement.
+ */
+public class PersistDeferredRelationship {
+
+  private final SpiEbeanServer ebeanServer;
+  private final BeanDescriptor<?> beanDescriptor;
+  private final EntityBean assocBean;
+  private final ImportedId importedId;
+  private final EntityBean bean;
+
+  public PersistDeferredRelationship(SpiEbeanServer ebeanServer, BeanDescriptor<?> beanDescriptor, EntityBean assocBean, ImportedId importedId, EntityBean bean) {
+
+    this.ebeanServer = ebeanServer;
+    this.beanDescriptor = beanDescriptor;
+    this.assocBean = assocBean;
+    this.importedId = importedId;
+    this.bean = bean;
+  }
+
+  /**
+   * Build and execute a SqlUpdate to set the importId value (as it will be available now).
+   * <p>
+   * This is executed later (deferred) until after JDBC batch flush or prior to commit.
+   * </p>
+   */
+  public void execute(SpiTransaction transaction) {
+
+    String sql = beanDescriptor.getUpdateImportedIdSql(importedId);
+    SqlUpdate sqlUpdate = ebeanServer.createSqlUpdate(sql);
+
+    // bind the set clause for the importedId
+    int pos = importedId.bind(1, sqlUpdate, assocBean);
+
+    // bind the where clause for the bean
+    Object[] idValues = beanDescriptor.getIdBinder().getIdValues(bean);
+    for (int j = 0; j < idValues.length; j++) {
+      sqlUpdate.setParameter(pos + j, idValues[j]);
+    }
+
+    ebeanServer.execute(sqlUpdate, transaction);
+  }
+}

src/main/java/com/avaje/ebeaninternal/server/core/PersistRequestBean.java

@@ -1,15 +1,15 @@
 package com.avaje.ebeaninternal.server.core;
 
 import com.avaje.ebean.ValuePair;
-import com.avaje.ebeaninternal.api.ConcurrencyMode;
 import com.avaje.ebean.annotation.DocStoreMode;
 import com.avaje.ebean.bean.EntityBean;
 import com.avaje.ebean.bean.EntityBeanIntercept;
+import com.avaje.ebean.bean.PreGetterCallback;
 import com.avaje.ebean.event.BeanPersistController;
 import com.avaje.ebean.event.BeanPersistListener;
 import com.avaje.ebean.event.BeanPersistRequest;
 import com.avaje.ebean.event.changelog.BeanChange;
-import com.avaje.ebeaninternal.api.DerivedRelationshipData;
+import com.avaje.ebeaninternal.api.ConcurrencyMode;
 import com.avaje.ebeaninternal.api.SpiEbeanServer;
 import com.avaje.ebeaninternal.api.SpiTransaction;
 import com.avaje.ebeaninternal.api.TransactionEvent;
@@ -18,12 +18,13 @@ import com.avaje.ebeaninternal.server.deploy.BeanDescriptor;
 import com.avaje.ebeaninternal.server.deploy.BeanManager;
 import com.avaje.ebeaninternal.server.deploy.BeanProperty;
 import com.avaje.ebeaninternal.server.deploy.BeanPropertyAssocMany;
+import com.avaje.ebeaninternal.server.deploy.id.ImportedId;
 import com.avaje.ebeaninternal.server.persist.BatchControl;
 import com.avaje.ebeaninternal.server.persist.PersistExecute;
 import com.avaje.ebeaninternal.server.transaction.BeanPersistIdMap;
+import com.avaje.ebeanservice.docstore.api.DocStoreUpdate;
 import com.avaje.ebeanservice.docstore.api.DocStoreUpdateContext;
 import com.avaje.ebeanservice.docstore.api.DocStoreUpdates;
-import com.avaje.ebeanservice.docstore.api.DocStoreUpdate;
 
 import javax.persistence.OptimisticLockException;
 import javax.persistence.PersistenceException;
@@ -36,7 +37,7 @@ import java.util.Set;
 /**
  * PersistRequest for insert update or delete of a bean.
  */
-public final class PersistRequestBean<T> extends PersistRequest implements BeanPersistRequest<T>, DocStoreUpdate {
+public final class PersistRequestBean<T> extends PersistRequest implements BeanPersistRequest<T>, DocStoreUpdate, PreGetterCallback {
 
   private final BeanManager<T> beanManager;
 
@@ -137,6 +138,11 @@ public final class PersistRequestBean<T> extends PersistRequest implements BeanP
 
   private long version;
 
+  /**
+   * Flag set when request is added to JDBC batch registered as a "getter callback" to automatically flush batch.
+   */
+  private boolean getterCallback;
+
   public PersistRequestBean(SpiEbeanServer server, T bean, Object parentBean, BeanManager<T> mgr, SpiTransaction t,
                             PersistExecute persistExecute, PersistRequest.Type type, boolean saveRecurse, boolean publish) {
 
@@ -174,7 +180,7 @@ public final class PersistRequestBean<T> extends PersistRequest implements BeanP
 
   /**
    * Return the document store event that should be used for this request.
-   *
+   * <p>
    * Used to check if the Transaction has set the mode to IGNORE when doing large batch inserts that we
    * don't want to send to the doc store.
    */
@@ -239,8 +245,17 @@ public final class PersistRequestBean<T> extends PersistRequest implements BeanP
    */
   public void setBatched() {
     batched = true;
+    if (type == Type.INSERT || type == Type.UPDATE) {
+      // used to trigger automatic jdbc batch flush
+      intercept.registerGetterCallback(this);
+      getterCallback = true;
+    }
   }
 
+  @Override
+  public void preGetterTrigger() {
+    transaction.flushBatch();
+  }
 
   public void setSkipBatchForTopLevel() {
     skipBatchForTopLevel = true;
@@ -548,7 +563,7 @@ public final class PersistRequestBean<T> extends PersistRequest implements BeanP
    * Create and return a new reference bean matching this beans Id value.
    */
   public T createReference() {
-    return beanDescriptor.createReference(Boolean.FALSE, getBeanId(), null);
+    return beanDescriptor.createReference(Boolean.FALSE, false, getBeanId(), null);
   }
 
   /**
@@ -621,6 +636,9 @@ public final class PersistRequestBean<T> extends PersistRequest implements BeanP
 
   @Override
   public int executeNow() {
+    if (getterCallback) {
+      intercept.clearGetterCallback();
+    }
     switch (type) {
       case INSERT:
         persistExecute.executeInsertBean(this);
@@ -803,7 +821,7 @@ public final class PersistRequestBean<T> extends PersistRequest implements BeanP
   }
 
   /**
-   * Add the bean to the TransactionEvent. This will be used by TransactionManager to synch Cache,
+   * Add the bean to the TransactionEvent. This will be used by TransactionManager to sync Cache,
    * Cluster and text indexes.
    */
   private void addEvent() {
@@ -856,8 +874,11 @@ public final class PersistRequestBean<T> extends PersistRequest implements BeanP
     }
   }
 
-  public List<DerivedRelationshipData> getDerivedRelationships() {
-    return transaction.getDerivedRelationship(bean);
+  /**
+   * Register the derived relationships to get executed later (on JDBC batch flush or commit).
+   */
+  public void deferredRelationship(EntityBean assocBean, ImportedId importedId, EntityBean bean) {
+    transaction.registerDeferred(new PersistDeferredRelationship(ebeanServer, beanDescriptor, assocBean, importedId, bean));
   }
 
   private void postInsert() {

src/main/java/com/avaje/ebeaninternal/server/core/QueryIterator.java

@@ -1,60 +0,0 @@
-package com.avaje.ebeaninternal.server.core;
-
-import java.util.Iterator;
-
-/**
- * Used to provide iteration over query results.
- * <p>
- * This can be used when you want to process a very large number of results and
- * means that you don't have to hold all the results in memory at once (unlike
- * findList(), findSet() etc where all the beans are held in the List or Set
- * etc).
- * </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);
- * 
- * QueryIterator&lt;Customer&gt; it = query.findIterate();
- * try {
- *   while (it.hasNext()) {
- *     Customer customer = it.next();
- *     // do something with customer...
- *   }
- * } finally {
- *   // close the associated resources
- *   it.close();
- * }
- * </pre>
- * 
- * @author rbygrave
- * 
- * @param <T>
- *          the type of entity bean in the iteration
- */
-public interface QueryIterator<T> extends Iterator<T>, java.io.Closeable {
-
-  /**
-   * Returns <tt>true</tt> if the iteration has more elements.
-   */
-  boolean hasNext();
-
-  /**
-   * Returns the next element in the iteration.
-   */
-  T next();
-
-  /**
-   * Remove is not allowed.
-   */
-  void remove();
-
-  /**
-   * Close the underlying resources held by this iterator.
-   */
-  void close();
-}