#1966 Remove sequence batching - postgres opps

Also remove h2sqldb in favour of always using H2

.travis.yml

@@ -1,15 +1,14 @@
-dist: trusty
+dist: xenial
 sudo: required
 language: java
 jdk:
-  - oraclejdk8
   - openjdk11
 
 git:
   depth: 3
 
 addons:
-  postgresql: "9.6"
+  postgresql: 10
 #  apt:
 #    packages:
 #    - mysql-server-5.7

README.md

@@ -21,7 +21,7 @@
         </a>
       </td>
       <td align="center" valign="middle">
-        <a href="https://timerbe.de" target="_blank">
+        <a href="https://timerbee.de" target="_blank">
           <img width="222px" src="https://ebean.io/images/logo-timerbee.png">
         </a>
       </td>
@@ -44,4 +44,3 @@ Goto [https://ebean.io/docs/](https://ebean.io/docs/)
 ## Other versions
 * [![Maven Central : ebean-agent](https://maven-badges.herokuapp.com/maven-central/io.ebean/ebean-agent/badge.svg)](https://maven-badges.herokuapp.com/maven-central/io.ebean/ebean-agent) - ebean-agent
 * [![Maven Central : ebean-maven-plugin](https://maven-badges.herokuapp.com/maven-central/io.ebean/ebean-maven-plugin/badge.svg)](https://maven-badges.herokuapp.com/maven-central/io.ebean/ebean-maven-plugin) - ebean-maven-plugin
-

pom.xml

@@ -3,56 +3,29 @@
 
   <parent>
     <groupId>org.avaje</groupId>
-    <artifactId>java8-parent</artifactId>
-    <version>1.3</version>
+    <artifactId>java8-oss</artifactId>
+    <version>2.1</version>
   </parent>
 
   <groupId>io.ebean</groupId>
   <artifactId>ebean</artifactId>
-  <version>11.41.2</version>
+  <version>12.1.14-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <name>ebean</name>
   <url>http://ebean-orm.github.io/</url>
 
   <properties>
-    <jackson-core.version>2.9.8</jackson-core.version>
-    <snakeyaml.version>1.21</snakeyaml.version>
+    <jackson-core.version>2.10.0</jackson-core.version>
+    <jackson-databind.version>2.10.0</jackson-databind.version>
   </properties>
 
   <scm>
     <developerConnection>scm:git:git@github.com:ebean-orm/ebean.git</developerConnection>
-    <tag>ebean-11.41.2</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <profiles>
-    <profile>
-      <!-- Note: to use this profile, you need credentials for the oracle repository in your
-        settings.xml as described here:
-        http://docs.oracle.com/middleware/1213/core/MAVEN/config_maven_repo.htm#MAVEN9010 -->
-      <id>oracle</id>
-      <dependencies>
-        <dependency>
-          <groupId>com.oracle.jdbc</groupId>
-          <artifactId>ojdbc8</artifactId>
-          <version>12.2.0.1</version>
-          <scope>test</scope>
-        </dependency>
-      </dependencies>
-      <repositories>
-        <repository>
-          <id>maven.oracle.com</id>
-          <releases>
-            <enabled>true</enabled>
-          </releases>
-          <snapshots>
-            <enabled>false</enabled>
-          </snapshots>
-          <url>https://maven.oracle.com</url>
-          <layout>default</layout>
-        </repository>
-      </repositories>
-    </profile>
     <profile>
       <!-- Note: to use this profile, you need to download manually the db2jcc4 driver.
         After that, install it into your local maven repository:
@@ -88,13 +61,10 @@
       <scope>provided</scope>
     </dependency>
 
-    <!--
-    Exclude snakeyaml if you desire - it is not strictly required.
-    -->
     <dependency>
-      <groupId>org.yaml</groupId>
-      <artifactId>snakeyaml</artifactId>
-      <version>${snakeyaml.version}</version>
+      <groupId>io.avaje</groupId>
+      <artifactId>config</artifactId>
+      <version>1.0</version>
     </dependency>
 
     <!--
@@ -117,31 +87,25 @@
     <dependency>
       <groupId>io.ebean</groupId>
       <artifactId>ebean-annotation</artifactId>
-      <version>4.11</version>
+      <version>6.9</version>
     </dependency>
 
     <dependency>
       <groupId>io.ebean</groupId>
       <artifactId>ebean-types</artifactId>
-      <version>1.3</version>
+      <version>2.1</version>
     </dependency>
 
     <dependency>
       <groupId>io.ebean</groupId>
       <artifactId>ebean-datasource</artifactId>
-      <version>4.5.2</version>
-    </dependency>
-
-    <dependency>
-      <groupId>org.avaje</groupId>
-      <artifactId>avaje-classpath-scanner</artifactId>
-      <version>3.1.1</version>
+      <version>4.7.3</version>
     </dependency>
 
     <dependency>
       <groupId>io.ebean</groupId>
       <artifactId>ebean-migration</artifactId>
-      <version>11.16.2</version>
+      <version>12.1.4</version>
     </dependency>
 
     <dependency>
@@ -161,7 +125,7 @@
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-databind</artifactId>
-      <version>${jackson-core.version}</version>
+      <version>${jackson-databind.version}</version>
       <scope>provided</scope>
     </dependency>
 
@@ -198,7 +162,7 @@
     <dependency>
       <groupId>org.glassfish.jaxb</groupId>
       <artifactId>jaxb-runtime</artifactId>
-      <version>2.4.0-b180830.0438</version>
+      <version>2.3.2</version>
       <scope>provided</scope>
     </dependency>
 
@@ -213,23 +177,30 @@
     <dependency>
       <groupId>org.postgresql</groupId>
       <artifactId>postgresql</artifactId>
-      <version>42.2.2</version>
+      <version>42.2.10</version>
       <scope>provided</scope>
     </dependency>
 
     <!-- Test scope -->
 
-    <!--<dependency>-->
-    <!--<groupId>oracle</groupId>-->
-    <!--<artifactId>oracle-jdbc</artifactId>-->
-    <!--<version>7.0</version>-->
-    <!--<scope>test</scope>-->
-    <!--</dependency>-->
+    <dependency>
+      <groupId>com.nuodb.jdbc</groupId>
+      <artifactId>nuodb-jdbc</artifactId>
+      <version>20.2.0</version>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>com.oracle.ojdbc</groupId>
+      <artifactId>ojdbc10</artifactId>
+      <version>19.3.0.0</version>
+      <scope>test</scope>
+    </dependency>
 
     <dependency>
       <groupId>io.ebean.test</groupId>
       <artifactId>ebean-test-docker</artifactId>
-      <version>2.5.1</version>
+      <version>3.1.3</version>
       <scope>test</scope>
     </dependency>
 
@@ -245,7 +216,7 @@
     <dependency>
       <groupId>com.h2database</groupId>
       <artifactId>h2</artifactId>
-      <version>1.4.197</version>
+      <version>1.4.199</version>
       <scope>provided</scope>
     </dependency>
 
@@ -273,8 +244,7 @@
     <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
-      <!-- Do not upgrade to 6.0.6: https://bugs.mysql.com/bug.php?id=82896 -->
-      <version>5.1.43</version>
+      <version>8.0.17</version>
       <scope>test</scope>
     </dependency>
 
@@ -285,12 +255,18 @@
       <scope>test</scope>
     </dependency>
 
+    <dependency>
+      <groupId>org.mockito</groupId>
+      <artifactId>mockito-core</artifactId>
+      <version>3.0.0</version>
+      <scope>test</scope>
+    </dependency>
+
     <dependency>
       <groupId>org.avaje.composite</groupId>
-      <artifactId>avaje-composite-testing</artifactId>
+      <artifactId>junit</artifactId>
       <version>1.1</version>
       <scope>test</scope>
-      <type>pom</type>
     </dependency>
 
     <dependency>
@@ -301,9 +277,9 @@
     </dependency>
 
     <dependency>
-      <groupId>org.avaje.moduuid</groupId>
-      <artifactId>avaje-moduuid</artifactId>
-      <version>2.1</version>
+      <groupId>io.avaje</groupId>
+      <artifactId>mod-uuid</artifactId>
+      <version>1.1</version>
       <scope>test</scope>
     </dependency>
 
@@ -316,13 +292,13 @@
       <plugin>
         <groupId>io.ebean</groupId>
         <artifactId>ebean-maven-plugin</artifactId>
-        <version>11.41.2</version>
+        <version>12.1.12</version>
         <executions>
           <execution>
             <id>test</id>
             <phase>process-test-classes</phase>
             <configuration>
-              <transformArgs>debug=1</transformArgs>
+              <transformArgs>debug=0</transformArgs>
             </configuration>
             <goals>
               <goal>testEnhance</goal>
@@ -373,25 +349,11 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-javadoc-plugin</artifactId>
-        <version>2.9.1</version>
+        <version>3.1.1</version>
         <configuration>
-          <doctitle>Ebean 11</doctitle>
+          <doctitle>Ebean 12</doctitle>
           <overview>src/main/java/io/ebean/overview.html</overview>
-          <source>1.8</source>
-          <doclet>org.avaje.doclet.PygmentsDoclet</doclet>
           <excludePackageNames>io.ebeaninternal.*:io.ebeanservice:io.ebean.common:io.ebean.bean:io.ebean.service:io.ebean.metric:io.ebean.util:io.ebean.config.properties:io.ebean.config.dbplatform</excludePackageNames>
-          <docletArtifact>
-            <groupId>org.avaje</groupId>
-            <artifactId>pygments-doclet</artifactId>
-            <version>1.0.0</version>
-          </docletArtifact>
-          <additionalparam>
-            -Xdoclint:none
-            -include-basedir ${project.basedir}
-            -attributes "idseparator=-; project_name=${project.name}; \
-            project_version=${project.version}; \
-            project_desc=${project.description}"
-          </additionalparam>
           <linksource>true</linksource>
           <overview>src/main/java/com/avaje/ebean/overview.html</overview>
         </configuration>

src/main/java/io/ebean/DB.java

@@ -2,7 +2,6 @@ package io.ebean;
 
 import io.ebean.annotation.TxIsolation;
 import io.ebean.cache.ServerCacheManager;
-import io.ebean.config.DatabaseConfig;
 import io.ebean.plugin.Property;
 import io.ebean.text.csv.CsvReader;
 import io.ebean.text.json.JsonContext;
@@ -87,14 +86,14 @@ public class DB {
 
 //  /**
 //   * Register the server with this Ebean singleton. Specify if the registered
-//   * server is the primary/default server.
+//   * server is the primary/default database.
 //   */
 //  public static void register(EbeanServer server, boolean defaultServer) {
 //    serverMgr.register(server, defaultServer);
 //  }
 //
 //  /**
-//   * Backdoor for registering a mock implementation of EbeanServer as the default server.
+//   * Backdoor for registering a mock implementation of EbeanServer as the default database.
 //   */
 //  protected static EbeanServer mock(String name, EbeanServer server, boolean defaultServer) {
 //    EbeanServer originalPrimaryServer = serverMgr.defaultServer;
@@ -177,6 +176,18 @@ public class DB {
     return getDefault().beginTransaction();
   }
 
+  /**
+   * Create a new transaction that is not held in TransactionThreadLocal.
+   * <p>
+   * You will want to do this if you want multiple Transactions in a single
+   * thread or generally use transactions outside of the TransactionThreadLocal
+   * management.
+   * </p>
+   */
+  public static Transaction createTransaction() {
+    return getDefault().createTransaction();
+  }
+
   /**
    * Start a transaction additionally specifying the isolation level.
    *
@@ -396,15 +407,6 @@ public class DB {
    * called then no optimistic locking is performed (internally ConcurrencyMode.NONE is used).
    * </p>
    * <p>
-   * <b>{@link DatabaseConfig#setUpdatesDeleteMissingChildren(boolean)}: </b> When cascade saving to a
-   * OneToMany or ManyToMany the updatesDeleteMissingChildren setting controls if any other children
-   * that are in the database but are not in the collection are deleted.
-   * </p>
-   * <p>
-   * <b>{@link DatabaseConfig#setUpdateChangesOnly(boolean)}: </b> The updateChangesOnly setting
-   * controls if only the changed properties are included in the update or if all the loaded
-   * properties are included instead.
-   * </p>
    * <pre>{@code
    *
    *   // A 'stateless update' example
@@ -414,9 +416,6 @@ public class DB {
    *   database.update(customer);
    *
    * }</pre>
-   *
-   * @see DatabaseConfig#setUpdatesDeleteMissingChildren(boolean)
-   * @see DatabaseConfig#setUpdateChangesOnly(boolean)
    */
   public static void update(Object bean) throws OptimisticLockException {
     getDefault().update(bean);
@@ -455,6 +454,13 @@ public class DB {
     return getDefault().saveAll(beans);
   }
 
+  /**
+   * Save all the beans from a Collection.
+   */
+  public static int saveAll(Object... beans) throws OptimisticLockException {
+    return getDefault().saveAll(beans);
+  }
+
   /**
    * This method checks the uniqueness of a bean. I.e. if the save will work. It will return the
    * properties that violates an unique / primary key. This may be done in an UI save action to
@@ -663,7 +669,7 @@ public class DB {
    *   // find orders and their customers
    *   List<Order> list = DB.find(Order.class)
    *     .fetch("customer")
-   *     .orderBy("id")
+   *     .order("id")
    *     .findList();
    *
    *   // sort by customer name ascending, then by order shipDate
@@ -749,8 +755,11 @@ public class DB {
   }
 
   /**
+   * Deprecated - migrate to sqlQuery().
+   * <p>
    * This is an alias for {@link #sqlQuery(String)}.
    */
+  @Deprecated
   public static SqlQuery createSqlQuery(String sql) {
     return sqlQuery(sql);
   }
@@ -773,8 +782,11 @@ public class DB {
   }
 
   /**
+   * Deprecated - migrate to sqlUpdate().
+   * <p>
    * This is an alias for {@link #sqlUpdate(String)}.
    */
+  @Deprecated
   public static SqlUpdate createSqlUpdate(String sql) {
     return sqlUpdate(sql);
   }
@@ -1215,6 +1227,13 @@ public class DB {
     return getDefault().getBeanState(bean);
   }
 
+  /**
+   * Return the value of the Id property for a given bean.
+   */
+  public static Object getBeanId(Object bean) {
+    return getDefault().getBeanId(bean);
+  }
+
   /**
    * Return the manager of the level 2 cache ("L2" cache).
    */
@@ -1237,4 +1256,18 @@ public class DB {
     return getDefault().json();
   }
 
+  /**
+   * Truncate the base tables for the given bean types.
+   */
+  public static void truncate(Class<?>... types) {
+    getDefault().truncate(types);
+  }
+
+  /**
+   * Truncate the given tables.
+   */
+  public static void truncate(String... tables) {
+    getDefault().truncate(tables);
+  }
+
 }

src/main/java/io/ebean/Database.java

@@ -3,7 +3,6 @@ package io.ebean;
 import io.ebean.annotation.TxIsolation;
 import io.ebean.cache.ServerCacheManager;
 import io.ebean.config.DatabaseConfig;
-import io.ebean.config.ServerConfig;
 import io.ebean.meta.MetaInfoManager;
 import io.ebean.plugin.Property;
 import io.ebean.plugin.SpiServer;
@@ -123,7 +122,7 @@ public interface Database {
   String getName();
 
   /**
-   * Return the ExpressionFactory for this server.
+   * Return the ExpressionFactory for this database.
    */
   ExpressionFactory getExpressionFactory();
 
@@ -376,7 +375,7 @@ public interface Database {
    *   // find orders and their customers
    *   List<Order> list = database.find(Order.class)
    *     .fetch("customer")
-   *     .orderBy("id")
+   *     .order("id")
    *     .findList();
    *
    *   // sort by customer name ascending, then by order shipDate
@@ -465,8 +464,11 @@ public interface Database {
   SqlQuery sqlQuery(String sql);
 
   /**
+   * Deprecated - migrate to sqlQuery().
+   * <p>
    * This is an alias for {@link #sqlQuery(String)}.
    */
+  @Deprecated
   SqlQuery createSqlQuery(String sql);
 
   /**
@@ -485,8 +487,11 @@ public interface Database {
   SqlUpdate sqlUpdate(String sql);
 
   /**
+   * Deprecated - migrate to sqlUpdate().
+   * <p>
    * This is an alias for {@link #sqlUpdate(String)}.
    */
+  @Deprecated
   SqlUpdate createSqlUpdate(String sql);
 
   /**
@@ -856,7 +861,7 @@ public interface Database {
    * <pre>{@code
    *   public class Order { ...
    *
-   * 	   @OneToMany(cascade=CascadeType.ALL, mappedBy="order")
+   *     @OneToMany(cascade=CascadeType.ALL, mappedBy="order")
    * 	   List<OrderDetail> details;
    * 	   ...
    *   }
@@ -876,6 +881,11 @@ public interface Database {
    */
   int saveAll(Collection<?> beans) throws OptimisticLockException;
 
+  /**
+   * Save all the beans.
+   */
+  int saveAll(Object... beans) throws OptimisticLockException;
+
   /**
    * Delete the bean.
    * <p>
@@ -1051,7 +1061,6 @@ public interface Database {
    *   Integer returnValue = (Integer) cs.getObject(3);
    *
    * }</pre>
-   *
    */
   int execute(CallableSql callableSql);
 
@@ -1196,17 +1205,6 @@ public interface Database {
    * <b>Optimistic Locking: </b> Note that if the version property is not set when update() is
    * called then no optimistic locking is performed (internally ConcurrencyMode.NONE is used).
    * </p>
-   * <p>
-   * <b>{@link ServerConfig#setUpdatesDeleteMissingChildren(boolean)}: </b> When cascade saving to a
-   * OneToMany or ManyToMany the updatesDeleteMissingChildren setting controls if any other children
-   * that are in the database but are not in the collection are deleted.
-   * </p>
-   * <p>
-   * <b>{@link ServerConfig#setUpdateChangesOnly(boolean)}: </b> The updateChangesOnly setting
-   * controls if only the changed properties are included in the update or if all the loaded
-   * properties are included instead.
-   * </p>
-   * <p>
    * <pre>{@code
    *
    * // A 'stateless update' example
@@ -1216,9 +1214,6 @@ public interface Database {
    * database.update(customer);
    *
    * }</pre>
-   *
-   * @see ServerConfig#setUpdatesDeleteMissingChildren(boolean)
-   * @see ServerConfig#setUpdateChangesOnly(boolean)
    */
   void update(Object bean) throws OptimisticLockException;
 
@@ -1227,16 +1222,6 @@ public interface Database {
    */
   void update(Object bean, Transaction transaction) throws OptimisticLockException;
 
-  /**
-   * Update a bean additionally specifying a transaction and the deleteMissingChildren setting.
-   *
-   * @param bean                  the bean to update
-   * @param transaction           the transaction to use (can be null).
-   * @param deleteMissingChildren specify false if you do not want 'missing children' of a OneToMany
-   *                              or ManyToMany to be automatically deleted.
-   */
-  void update(Object bean, Transaction transaction, boolean deleteMissingChildren) throws OptimisticLockException;
-
   /**
    * Update a collection of beans. If there is no current transaction one is created and used to
    * update all the beans in the collection.
@@ -1323,7 +1308,7 @@ public interface Database {
    * 	   public void run() {
    * 		   User u1 = database.find(User.class, 1);
    * 		   ...
-   * 	   }
+   *     }
    *   });
    *
    * }</pre>
@@ -1372,7 +1357,7 @@ public interface Database {
    * 		   User u1 = database.find(User.class, 1);
    * 		   ...
    * 		   return u1.getEmail();
-   * 	   }
+   *     }
    *   });
    *
    * }</pre>
@@ -1580,4 +1565,15 @@ public interface Database {
    * </p>
    */
   <T> Set<String> validateQuery(Query<T> query);
+
+  /**
+   * Truncate all the given tables.
+   */
+  void truncate(String... tables);
+
+  /**
+   * Truncate the base tables for the given bean types.
+   */
+  void truncate(Class<?>... tables);
+
 }

src/main/java/io/ebean/DatabaseFactory.java

@@ -34,14 +34,14 @@ public class DatabaseFactory {
   }
 
   /**
-   * Create using ebean.properties to configure the server.
+   * Create using ebean.properties to configure the database.
    */
   public static synchronized Database create(String name) {
     return EbeanServerFactory.create(name);
   }
 
   /**
-   * Create using the ServerConfig object to configure the server.
+   * Create using the ServerConfig object to configure the database.
    */
   public static synchronized Database create(DatabaseConfig config) {
     return EbeanServerFactory.create(config);

src/main/java/io/ebean/DocumentStore.java

@@ -61,7 +61,7 @@ public interface DocumentStore {
    * <pre>{@code
    *
    * Customer customer =
-   *   server.find(Customer.class)
+   *   database.find(Customer.class)
    *     .setUseDocStore(true)
    *     .setId(42)
    *     .findOne();
@@ -79,7 +79,7 @@ public interface DocumentStore {
    * <pre>{@code
    *
    * List<Customer> newCustomers =
-   *  server.find(Customer.class)
+   *  database.find(Customer.class)
    *    .setUseDocStore(true)
    *    .where().eq("status, Customer.Status.NEW)
    *    .findList();
@@ -99,7 +99,7 @@ public interface DocumentStore {
    * <pre>{@code
    *
    * PagedList<Customer> newCustomers =
-   *  server.find(Customer.class)
+   *  database.find(Customer.class)
    *    .setUseDocStore(true)
    *    .where().eq("status, Customer.Status.NEW)
    *    .setMaxRows(50)
@@ -120,7 +120,7 @@ public interface DocumentStore {
    * </p>
    * <pre>{@code
    *
-   *  server.find(Order.class)
+   *  database.find(Order.class)
    *    .setUseDocStore(true)
    *    .where()... // perhaps add predicates
    *    .findEach((Order order) -> {
@@ -145,7 +145,7 @@ public interface DocumentStore {
    * </p>
    * <pre>{@code
    *
-   *  server.find(Order.class)
+   *  database.find(Order.class)
    *    .setUseDocStore(true)
    *    .where()... // perhaps add predicates
    *    .findEachWhile(new Predicate<Order>() {
@@ -190,7 +190,7 @@ public interface DocumentStore {
    * Drop the index from the document store (similar to DDL drop table).
    * <pre>{@code
    *
-   *   DocumentStore documentStore = server.docStore();
+   *   DocumentStore documentStore = database.docStore();
    *
    *   documentStore.dropIndex("product_copy");
    *
@@ -202,7 +202,7 @@ public interface DocumentStore {
    * Create an index given a mapping file as a resource in the classPath (similar to DDL create table).
    * <pre>{@code
    *
-   *   DocumentStore documentStore = server.docStore();
+   *   DocumentStore documentStore = database.docStore();
    *
    *   // uses product_copy.mapping.json resource
    *   // ... to define mappings for the index
@@ -289,7 +289,7 @@ public interface DocumentStore {
    * <pre>{@code
    *
    *  // predicates to select the source documents to copy
-   *  Query<Product> query = server.find(Product.class)
+   *  Query<Product> query = database.find(Product.class)
    *    .where()
    *      .ge("whenModified", new Timestamp(since))
    *      .ge("name", "A")

src/main/java/io/ebean/DtoQuery.java

@@ -77,12 +77,29 @@ public interface DtoQuery<T> {
   Optional<T> findOneOrEmpty();
 
   /**
-   * The same as bind for named parameters.
+   * Bind all the parameters using index positions.
+   * <p>
+   * Binds each parameter moving the index position each time.
+   * <p>
+   * A convenience for multiple calls to {@link #setParameter(Object)}
+   */
+  DtoQuery<T> setParameters(Object... value);
+
+  /**
+   * Bind the next parameter using index position.
+   * <p>
+   * Bind the parameter using index position starting at 1 and incrementing.
+   * <p>
+   */
+  DtoQuery<T> setParameter(Object value);
+
+  /**
+   * Bind the named parameter.
    */
   DtoQuery<T> setParameter(String name, Object value);
 
   /**
-   * The same as bind for positioned parameters.
+   * Bind the parameter by its index position (1 based like JDBC).
    */
   DtoQuery<T> setParameter(int position, Object value);
 
@@ -136,4 +153,8 @@ public interface DtoQuery<T> {
    */
   DtoQuery<T> setBufferFetchSizeHint(int bufferFetchSizeHint);
 
+  /**
+   * Use the explicit transaction to execute the query.
+   */
+  DtoQuery<T> usingTransaction(Transaction transaction);
 }

src/main/java/io/ebean/Ebean.java

@@ -24,6 +24,8 @@ import java.util.concurrent.Callable;
 import java.util.concurrent.ConcurrentHashMap;
 
 /**
+ * Ebean will be Deprecated - please migrate to use DB.
+ * <p>
  * Ebean is a registry of {@link Database} by name. Ebean has now been renamed to {@link DB}.
  * <p>
  * Ebean is effectively this is an alias for {@link DB} which is the new and improved name for Ebean.
@@ -80,7 +82,7 @@ public final class Ebean {
 
       } catch (DataSourceConfigurationException e) {
         String msg = "Configuration error creating DataSource for the default Database." +
-          " This typically means a missing application-test.yaml or missing ebean-test-config dependency." +
+          " This typically means a missing application-test.yaml or missing ebean-test dependency." +
           " See https://ebean.io/docs/trouble-shooting#datasource";
         throw new DataSourceConfigurationException(msg, e);
 
@@ -185,7 +187,7 @@ public final class Ebean {
   }
 
   /**
-   * Return the ExpressionFactory from the default server.
+   * Return the ExpressionFactory from the default database.
    * <p>
    * The ExpressionFactory is used internally by the query and ExpressionList to
    * build the WHERE and HAVING clauses. Alternatively you can use the
@@ -207,14 +209,14 @@ public final class Ebean {
 
   /**
    * Register the server with this Ebean singleton. Specify if the registered
-   * server is the primary/default server.
+   * server is the primary/default database.
    */
   public static void register(EbeanServer server, boolean defaultServer) {
     serverMgr.register(server, defaultServer);
   }
 
   /**
-   * Backdoor for registering a mock implementation of EbeanServer as the default server.
+   * Backdoor for registering a mock implementation of EbeanServer as the default database.
    */
   protected static EbeanServer mock(String name, EbeanServer server, boolean defaultServer) {
     EbeanServer originalPrimaryServer = serverMgr.defaultServer;
@@ -462,7 +464,7 @@ public final class Ebean {
    * <pre>{@code
    *   public class Order { ...
    *
-   * 	   @OneToMany(cascade=CascadeType.ALL, mappedBy="order")
+   *     @OneToMany(cascade=CascadeType.ALL, mappedBy="order")
    * 	   List<OrderDetail> details;
    * 	   ...
    *   }
@@ -548,9 +550,6 @@ public final class Ebean {
    *   DB.update(customer);
    *
    * }</pre>
-   *
-   * @see ServerConfig#setUpdatesDeleteMissingChildren(boolean)
-   * @see ServerConfig#setUpdateChangesOnly(boolean)
    */
   public static void update(Object bean) throws OptimisticLockException {
     serverMgr.getDefaultServer().update(bean);
@@ -797,7 +796,7 @@ public final class Ebean {
    *   // find orders and their customers
    *   List<Order> list = Ebean.find(Order.class)
    *     .fetch("customer")
-   *     .orderBy("id")
+   *     .order("id")
    *     .findList();
    *
    *   // sort by customer name ascending, then by order shipDate
@@ -868,6 +867,8 @@ public final class Ebean {
   }
 
   /**
+   * Deprecated - migrate to DB.sqlQuery().
+   * <p>
    * Create a SqlQuery for executing native sql
    * query statements.
    * <p>
@@ -875,22 +876,24 @@ public final class Ebean {
    * annotation for examples.
    * </p>
    */
+  @Deprecated
   public static SqlQuery createSqlQuery(String sql) {
-    return serverMgr.getDefaultServer().createSqlQuery(sql);
+    return serverMgr.getDefaultServer().sqlQuery(sql);
   }
 
   /**
+   * Deprecated - migrate to DB.sqlUpdate().
+   * <p>
    * Create a sql update for executing native dml statements.
    * <p>
    * Use this to execute a Insert Update or Delete statement. The statement will
    * be native to the database and contain database table and column names.
-   * </p>
    * <p>
    * See {@link SqlUpdate} for example usage.
-   * </p>
    */
+  @Deprecated
   public static SqlUpdate createSqlUpdate(String sql) {
-    return serverMgr.getDefaultServer().createSqlUpdate(sql);
+    return serverMgr.getDefaultServer().sqlUpdate(sql);
   }
 
   /**
@@ -1196,7 +1199,7 @@ public final class Ebean {
    * 	   public void run() {
    * 		   User u1 = Ebean.find(User.class, 1);
    * 		   ...
-   * 	   }
+   *     }
    *   });
    *
    * }</pre>
@@ -1248,7 +1251,7 @@ public final class Ebean {
    * 		   User u1 = Ebean.find(User.class, 1);
    * 		   ...
    * 		   return u1.getEmail();
-   * 	   }
+   *     }
    *   });
    *
    * }</pre>

src/main/java/io/ebean/EbeanServerFactory.java

@@ -48,7 +48,7 @@ public class EbeanServerFactory {
   }
 
   /**
-   * Create using ebean.properties to configure the server.
+   * Create using ebean.properties to configure the database.
    */
   public static synchronized EbeanServer create(String name) {
 
@@ -59,7 +59,7 @@ public class EbeanServerFactory {
   }
 
   /**
-   * Create using the ServerConfig object to configure the server.
+   * Create using the ServerConfig object to configure the database.
    */
   public static synchronized EbeanServer create(ServerConfig config) {
 

src/main/java/io/ebean/EbeanVersion.java

@@ -21,7 +21,7 @@ public class EbeanVersion {
   static {
     try {
       Properties prop = new Properties();
-      try (InputStream in = Ebean.class.getResourceAsStream("/META-INF/maven/io.ebean/ebean/pom.properties")) {
+      try (InputStream in = DB.class.getResourceAsStream("/META-INF/maven/io.ebean/ebean/pom.properties")) {
         if (in != null) {
           prop.load(in);
           in.close();

src/main/java/io/ebean/EmptyPagedList.java

@@ -0,0 +1,74 @@
+package io.ebean;
+
+import javax.annotation.Nonnull;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.Future;
+
+/**
+ * An empty PagedList.
+ * <p>
+ * For use in application code when we need to return a PagedList but don't want to
+ * execute a query.
+ * </p>
+ *
+ * <pre>{@code
+ *
+ *   PagedList<Customer> empty = PagedList.emptyList();
+ *
+ * }</pre>
+ */
+public class EmptyPagedList<T> implements PagedList<T> {
+
+  @Override
+  public void loadCount() {
+    // do nothing
+  }
+
+  @Nonnull
+  @Override
+  public Future<Integer> getFutureCount() {
+    return null;
+  }
+
+  @Nonnull
+  @Override
+  public List<T> getList() {
+    return Collections.emptyList();
+  }
+
+  @Override
+  public int getTotalCount() {
+    return 0;
+  }
+
+  @Override
+  public int getTotalPageCount() {
+    return 0;
+  }
+
+  @Override
+  public int getPageSize() {
+    return 0;
+  }
+
+  @Override
+  public int getPageIndex() {
+    return 0;
+  }
+
+  @Override
+  public boolean hasNext() {
+    return false;
+  }
+
+  @Override
+  public boolean hasPrev() {
+    return false;
+  }
+
+  @Override
+  public String getDisplayXtoYofZ(String to, String of) {
+    return "";
+  }
+}

src/main/java/io/ebean/Expr.java

@@ -34,14 +34,14 @@ public class Expr {
    * Equal To - property equal to the given value.
    */
   public static Expression eq(String propertyName, Object value) {
-    return Ebean.getExpressionFactory().eq(propertyName, value);
+    return DB.getExpressionFactory().eq(propertyName, value);
   }
 
   /**
    * Not Equal To - property not equal to the given value.
    */
   public static Expression ne(String propertyName, Object value) {
-    return Ebean.getExpressionFactory().ne(propertyName, value);
+    return DB.getExpressionFactory().ne(propertyName, value);
   }
 
   /**
@@ -49,7 +49,7 @@ public class Expr {
    * using a lower() function to make it case insensitive).
    */
   public static Expression ieq(String propertyName, String value) {
-    return Ebean.getExpressionFactory().ieq(propertyName, value);
+    return DB.getExpressionFactory().ieq(propertyName, value);
   }
 
   /**
@@ -59,28 +59,28 @@ public class Expr {
    * </p>
    */
   public static Expression inRange(String propertyName, Object value1, Object value2) {
-    return Ebean.getExpressionFactory().inRange(propertyName, value1, value2);
+    return DB.getExpressionFactory().inRange(propertyName, value1, value2);
   }
 
   /**
    * Between - property between the two given values.
    */
   public static Expression between(String propertyName, Object value1, Object value2) {
-    return Ebean.getExpressionFactory().between(propertyName, value1, value2);
+    return DB.getExpressionFactory().between(propertyName, value1, value2);
   }
 
   /**
    * Between - value between two given properties.
    */
   public static Expression between(String lowProperty, String highProperty, Object value) {
-    return Ebean.getExpressionFactory().betweenProperties(lowProperty, highProperty, value);
+    return DB.getExpressionFactory().betweenProperties(lowProperty, highProperty, value);
   }
 
   /**
    * Greater Than - property greater than the given value.
    */
   public static Expression gt(String propertyName, Object value) {
-    return Ebean.getExpressionFactory().gt(propertyName, value);
+    return DB.getExpressionFactory().gt(propertyName, value);
   }
 
   /**
@@ -88,42 +88,42 @@ public class Expr {
    * value.
    */
   public static Expression ge(String propertyName, Object value) {
-    return Ebean.getExpressionFactory().ge(propertyName, value);
+    return DB.getExpressionFactory().ge(propertyName, value);
   }
 
   /**
    * Less Than - property less than the given value.
    */
   public static Expression lt(String propertyName, Object value) {
-    return Ebean.getExpressionFactory().lt(propertyName, value);
+    return DB.getExpressionFactory().lt(propertyName, value);
   }
 
   /**
    * Less Than or Equal to - property less than or equal to the given value.
    */
   public static Expression le(String propertyName, Object value) {
-    return Ebean.getExpressionFactory().le(propertyName, value);
+    return DB.getExpressionFactory().le(propertyName, value);
   }
 
   /**
    * Is Null - property is null.
    */
   public static Expression isNull(String propertyName) {
-    return Ebean.getExpressionFactory().isNull(propertyName);
+    return DB.getExpressionFactory().isNull(propertyName);
   }
 
   /**
    * Is Not Null - property is not null.
    */
   public static Expression isNotNull(String propertyName) {
-    return Ebean.getExpressionFactory().isNotNull(propertyName);
+    return DB.getExpressionFactory().isNotNull(propertyName);
   }
 
   /**
    * Case insensitive {@link #exampleLike(Object)}
    */
   public static ExampleExpression iexampleLike(Object example) {
-    return Ebean.getExpressionFactory().iexampleLike(example);
+    return DB.getExpressionFactory().iexampleLike(example);
   }
 
   /**
@@ -131,14 +131,14 @@ public class Expr {
    * LikeType.RAW (you need to add you own wildcards % and _).
    */
   public static ExampleExpression exampleLike(Object example) {
-    return Ebean.getExpressionFactory().exampleLike(example);
+    return DB.getExpressionFactory().exampleLike(example);
   }
 
   /**
    * Create the query by Example expression specifying more options.
    */
   public static ExampleExpression exampleLike(Object example, boolean caseInsensitive, LikeType likeType) {
-    return Ebean.getExpressionFactory().exampleLike(example, caseInsensitive, likeType);
+    return DB.getExpressionFactory().exampleLike(example, caseInsensitive, likeType);
   }
 
   /**
@@ -146,7 +146,7 @@ public class Expr {
    * characters % (percentage) and _ (underscore).
    */
   public static Expression like(String propertyName, String value) {
-    return Ebean.getExpressionFactory().like(propertyName, value);
+    return DB.getExpressionFactory().like(propertyName, value);
   }
 
   /**
@@ -155,14 +155,14 @@ public class Expr {
    * a lower() function to make the expression case insensitive.
    */
   public static Expression ilike(String propertyName, String value) {
-    return Ebean.getExpressionFactory().ilike(propertyName, value);
+    return DB.getExpressionFactory().ilike(propertyName, value);
   }
 
   /**
    * Starts With - property like value%.
    */
   public static Expression startsWith(String propertyName, String value) {
-    return Ebean.getExpressionFactory().startsWith(propertyName, value);
+    return DB.getExpressionFactory().startsWith(propertyName, value);
   }
 
   /**
@@ -170,14 +170,14 @@ public class Expr {
    * lower() function to make the expression case insensitive.
    */
   public static Expression istartsWith(String propertyName, String value) {
-    return Ebean.getExpressionFactory().istartsWith(propertyName, value);
+    return DB.getExpressionFactory().istartsWith(propertyName, value);
   }
 
   /**
    * Ends With - property like %value.
    */
   public static Expression endsWith(String propertyName, String value) {
-    return Ebean.getExpressionFactory().endsWith(propertyName, value);
+    return DB.getExpressionFactory().endsWith(propertyName, value);
   }
 
   /**
@@ -185,14 +185,14 @@ public class Expr {
    * function to make the expression case insensitive.
    */
   public static Expression iendsWith(String propertyName, String value) {
-    return Ebean.getExpressionFactory().iendsWith(propertyName, value);
+    return DB.getExpressionFactory().iendsWith(propertyName, value);
   }
 
   /**
    * Contains - property like %value%.
    */
   public static Expression contains(String propertyName, String value) {
-    return Ebean.getExpressionFactory().contains(propertyName, value);
+    return DB.getExpressionFactory().contains(propertyName, value);
   }
 
   /**
@@ -200,42 +200,42 @@ public class Expr {
    * function to make the expression case insensitive.
    */
   public static Expression icontains(String propertyName, String value) {
-    return Ebean.getExpressionFactory().icontains(propertyName, value);
+    return DB.getExpressionFactory().icontains(propertyName, value);
   }
 
   /**
    * For collection properties that are empty (have not existing elements).
    */
   public static Expression isEmpty(String propertyName) {
-    return Ebean.getExpressionFactory().isEmpty(propertyName);
+    return DB.getExpressionFactory().isEmpty(propertyName);
   }
 
   /**
    * For collection properties that are not empty (have existing elements).
    */
   public static Expression isNotEmpty(String propertyName) {
-    return Ebean.getExpressionFactory().isNotEmpty(propertyName);
+    return DB.getExpressionFactory().isNotEmpty(propertyName);
   }
 
   /**
    * In - property has a value in the array of values.
    */
   public static Expression in(String propertyName, Object[] values) {
-    return Ebean.getExpressionFactory().in(propertyName, values);
+    return DB.getExpressionFactory().in(propertyName, values);
   }
 
   /**
    * In - using a subQuery.
    */
   public static Expression in(String propertyName, Query<?> subQuery) {
-    return Ebean.getExpressionFactory().in(propertyName, subQuery);
+    return DB.getExpressionFactory().in(propertyName, subQuery);
   }
 
   /**
    * In - property has a value in the collection of values.
    */
   public static Expression in(String propertyName, Collection<?> values) {
-    return Ebean.getExpressionFactory().in(propertyName, values);
+    return DB.getExpressionFactory().in(propertyName, values);
   }
 
   /**
@@ -272,14 +272,14 @@ public class Expr {
    * }</pre>
    */
   public static Expression inOrEmpty(String propertyName, Collection<?> values) {
-    return Ebean.getExpressionFactory().inOrEmpty(propertyName, values);
+    return DB.getExpressionFactory().inOrEmpty(propertyName, values);
   }
 
   /**
    * Id Equal to - ID property is equal to the value.
    */
   public static Expression idEq(Object value) {
-    return Ebean.getExpressionFactory().idEq(value);
+    return DB.getExpressionFactory().idEq(value);
   }
 
   /**
@@ -292,7 +292,7 @@ public class Expr {
    * @param propertyMap a map keyed by property names.
    */
   public static Expression allEq(Map<String, Object> propertyMap) {
-    return Ebean.getExpressionFactory().allEq(propertyMap);
+    return DB.getExpressionFactory().allEq(propertyMap);
   }
 
   /**
@@ -303,7 +303,7 @@ public class Expr {
    * </p>
    */
   public static Expression raw(String raw, Object value) {
-    return Ebean.getExpressionFactory().raw(raw, value);
+    return DB.getExpressionFactory().raw(raw, value);
   }
 
   /**
@@ -314,14 +314,14 @@ public class Expr {
    * </p>
    */
   public static Expression raw(String raw, Object[] values) {
-    return Ebean.getExpressionFactory().raw(raw, values);
+    return DB.getExpressionFactory().raw(raw, values);
   }
 
   /**
    * Add raw expression with no parameters.
    */
   public static Expression raw(String raw) {
-    return Ebean.getExpressionFactory().raw(raw);
+    return DB.getExpressionFactory().raw(raw);
   }
 
   /**
@@ -329,7 +329,7 @@ public class Expr {
    */
   public static Expression and(Expression expOne, Expression expTwo) {
 
-    return Ebean.getExpressionFactory().and(expOne, expTwo);
+    return DB.getExpressionFactory().and(expOne, expTwo);
   }
 
   /**
@@ -337,7 +337,7 @@ public class Expr {
    */
   public static Expression or(Expression expOne, Expression expTwo) {
 
-    return Ebean.getExpressionFactory().or(expOne, expTwo);
+    return DB.getExpressionFactory().or(expOne, expTwo);
   }
 
   /**
@@ -345,7 +345,7 @@ public class Expr {
    */
   public static Expression not(Expression exp) {
 
-    return Ebean.getExpressionFactory().not(exp);
+    return DB.getExpressionFactory().not(exp);
   }
 
   /**
@@ -353,7 +353,7 @@ public class Expr {
    */
   public static <T> Junction<T> conjunction(Query<T> query) {
 
-    return Ebean.getExpressionFactory().conjunction(query);
+    return DB.getExpressionFactory().conjunction(query);
   }
 
   /**
@@ -361,6 +361,6 @@ public class Expr {
    */
   public static <T> Junction<T> disjunction(Query<T> query) {
 
-    return Ebean.getExpressionFactory().disjunction(query);
+    return DB.getExpressionFactory().disjunction(query);
   }
 }

src/main/java/io/ebean/ExpressionFactory.java

@@ -536,4 +536,12 @@ public interface ExpressionFactory {
    */
   <T> Junction<T> junction(Junction.Type type, Query<T> query, ExpressionList<T> parent);
 
+  /**
+   * Add the expressions to the given expression list.
+   *
+   * @param where       The expression list to add the expressions to
+   * @param expressions The expressions that are parsed
+   * @param params      Bind parameters to match ? or ?1 bind positions.
+   */
+  <T> void where(ExpressionList<T> where, String expressions, Object[] params);
 }

src/main/java/io/ebean/ExpressionList.java

@@ -30,7 +30,7 @@ import java.util.function.Predicate;
  * </p>
  * <p>
  * The ExpressionList also duplicates methods that are found on the Query such
- * as findList() and orderBy(). The purpose of these methods is provide a fluid
+ * as findList() and order(). The purpose of these methods is provide a fluid
  * API. The upside of this approach is that you can build and execute a query
  * via chained methods. The down side is that this ExpressionList object has
  * more methods than you would initially expect (the ones duplicated from
@@ -52,6 +52,14 @@ public interface ExpressionList<T> {
    */
   Query<T> query();
 
+  /**
+   * Controls, if paginated queries should always append an 'order by id' statement at the end to
+   * guarantee a deterministic sort result. This may affect performance.
+   * If this is not enabled, and an orderBy is set on the query, it's up to the programmer that
+   * this query provides a deterministic result.
+   */
+  Query<T> orderById(boolean orderById);
+
   /**
    * Set the order by clause replacing the existing order by clause if there is
    * one.
@@ -59,12 +67,8 @@ public interface ExpressionList<T> {
    * This follows SQL syntax using commas between each property with the
    * optional asc and desc keywords representing ascending and descending order
    * respectively.
-   * </p>
-   * <p>
-   * This is EXACTLY the same as {@link #orderBy(String)}.
-   * </p>
    */
-  Query<T> order(String orderByClause);
+  ExpressionList<T> order(String orderByClause);
 
   /**
    * Return the OrderBy so that you can append an ascending or descending
@@ -77,27 +81,21 @@ public interface ExpressionList<T> {
   OrderBy<T> order();
 
   /**
-   * Return the OrderBy so that you can append an ascending or descending
-   * property to the order by clause.
-   * <p>
-   * This will never return a null. If no order by clause exists then an 'empty'
-   * OrderBy object is returned.
-   * </p>
+   * Deprecated migrate to order().
    */
+  @Deprecated
   OrderBy<T> orderBy();
 
   /**
-   * Add an orderBy clause to the query.
-   *
-   * @see Query#orderBy(String)
+   * Deprecated migrate to {@link #order(String)}
    */
+  @Deprecated
   Query<T> orderBy(String orderBy);
 
   /**
-   * Add an orderBy clause to the query.
-   *
-   * @see Query#orderBy(String)
+   * Deprecated migrate to {@link #order(String)}
    */
+  @Deprecated
   Query<T> setOrderBy(String orderBy);
 
   /**
@@ -334,7 +332,7 @@ public interface ExpressionList<T> {
    *  List<String> names =
    *    DB.find(Customer.class)
    *      .select("name")
-   *      .orderBy().asc("name")
+   *      .order().asc("name")
    *      .findSingleAttributeList();
    *
    * }</pre>
@@ -347,7 +345,7 @@ public interface ExpressionList<T> {
    *      .setDistinct(true)
    *      .select("name")
    *      .where().eq("status", Customer.Status.NEW)
-   *      .orderBy().asc("name")
+   *      .order().asc("name")
    *      .setMaxRows(100)
    *      .findSingleAttributeList();
    *
@@ -489,7 +487,26 @@ public interface ExpressionList<T> {
    * Add some filter predicate expressions to the many property.
    */
   @Nonnull
-  ExpressionList<T> filterMany(String prop);
+  ExpressionList<T> filterMany(String manyProperty);
+
+  /**
+   * Add filter expressions to the many property.
+   *
+   * <pre>{@code
+   *
+   *   DB.find(Customer.class)
+   *   .where()
+   *   .eq("name", "Rob")
+   *   .filterMany("orders", "status = ?", Status.NEW)
+   *   .findList();
+   *
+   * }</pre>
+   *
+   * @param manyProperty The many property
+   * @param expressions  Filter expressions with and, or and ? or ?1 type bind parameters
+   * @param params       Bind parameters used in the expressions
+   */
+  ExpressionList<T> filterMany(String manyProperty, String expressions, Object... params);
 
   /**
    * Specify specific properties to fetch on the main/root bean (aka partial
@@ -540,14 +557,14 @@ public interface ExpressionList<T> {
    *
    * @see Query#setFirstRow(int)
    */
-  Query<T> setFirstRow(int firstRow);
+  ExpressionList<T> setFirstRow(int firstRow);
 
   /**
    * Set the maximum number of rows to fetch.
    *
    * @see Query#setMaxRows(int)
    */
-  Query<T> setMaxRows(int maxRows);
+  ExpressionList<T> setMaxRows(int maxRows);
 
   /**
    * Set the name of the property which values become the key of a map.
@@ -663,6 +680,14 @@ public interface ExpressionList<T> {
    */
   ExpressionList<T> where();
 
+  /**
+   * Add the expressions to this expression list.
+   *
+   * @param expressions The expressions that are parsed and added to this expression list
+   * @param params      Bind parameters to match ? or ?1 bind positions.
+   */
+  ExpressionList<T> where(String expressions, Object... params);
+
   /**
    * Path exists - for the given path in a JSON document.
    * <pre>{@code
@@ -831,9 +856,9 @@ public interface ExpressionList<T> {
    */
   ExpressionList<T> inRange(String propertyName, Object value1, Object value2);
 
-    /**
-     * Between - property between the two given values.
-     */
+  /**
+   * Between - property between the two given values.
+   */
   ExpressionList<T> between(String propertyName, Object value1, Object value2);
 
   /**
@@ -1327,7 +1352,7 @@ public interface ExpressionList<T> {
    *
    * }</pre>
    * <p>
-   *   Note that we need to cast the Postgres array for UUID types like:
+   * Note that we need to cast the Postgres array for UUID types like:
    * </p>
    * <pre>{@code
    *
@@ -1335,7 +1360,7 @@ public interface ExpressionList<T> {
    *
    * }</pre>
    *
-   * @param raw The raw expression that is typically a subquery
+   * @param raw    The raw expression that is typically a subquery
    * @param values The values which is typically a list or set of id values.
    */
   ExpressionList<T> rawOrEmpty(String raw, Collection<?> values);
@@ -1424,7 +1449,7 @@ public interface ExpressionList<T> {
    *        .eq("status", Customer.Status.ACTIVE)
    *        .gt("id", 0)
    *        .endAnd()
-   *      .orderBy().asc("name")
+   *      .order().asc("name")
    *      .findList();
    * }</pre>
    */
@@ -1445,7 +1470,7 @@ public interface ExpressionList<T> {
    *    .or()
    *      .eq("status", Customer.Status.ACTIVE)
    *      .isNull("anniversary")
-   *    .orderBy().asc("name")
+   *    .order().asc("name")
    *    .findList();
    *
    * }</pre>
@@ -1465,7 +1490,7 @@ public interface ExpressionList<T> {
    *        .eq("status", Customer.Status.ACTIVE)
    *        .gt("id", 0)
    *        .endAnd()
-   *      .orderBy().asc("name")
+   *      .order().asc("name")
    *      .findList();
    *
    * }</pre>
@@ -1499,7 +1524,7 @@ public interface ExpressionList<T> {
    *       .gt("id", 1)
    *       .eq("anniversary", onAfter)
    *       .endNot()
-   *     .orderBy()
+   *     .order()
    *       .asc("name")
    *     .findList();
    *

src/main/java/io/ebean/ExtendedServer.java

@@ -1,8 +1,5 @@
 package io.ebean;
 
-import io.ebeaninternal.api.SpiQuery;
-import io.ebeaninternal.api.SpiTransaction;
-
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import javax.persistence.NonUniqueResultException;
@@ -13,6 +10,7 @@ import java.util.Optional;
 import java.util.Set;
 import java.util.function.Consumer;
 import java.util.function.Predicate;
+import java.util.stream.Stream;
 
 /**
  * The extended API for Database.
@@ -69,7 +67,7 @@ public interface ExtendedServer {
    *
    * @return True if the query finds a matching row in the database
    */
-  <T> boolean exists(SpiQuery<?> ormQuery, SpiTransaction transaction);
+  <T> boolean exists(Query<?> ormQuery, Transaction transaction);
 
   /**
    * Return the number of 'top level' or 'root' entities this query should return.
@@ -107,6 +105,24 @@ public interface ExtendedServer {
   @Nonnull
   <T> QueryIterator<T> findIterate(Query<T> query, Transaction transaction);
 
+  /**
+   * Return the query result as a Stream using a single persistence context.
+   * <p>
+   * Note that the stream needs to be closed so use with try with resources.
+   * </p>
+   */
+  @Nonnull
+  <T> Stream<T> findStream(Query<T> query, Transaction transaction);
+
+  /**
+   * Return the query result as a Stream (with multiple persistence contexts).
+   * <p>
+   * Note that the stream needs to be closed so use with try with resources.
+   * </p>
+   */
+  @Nonnull
+  <T> Stream<T> findLargeStream(Query<T> query, Transaction transaction);
+
   /**
    * Execute the query visiting the each bean one at a time.
    * <p>
@@ -341,7 +357,7 @@ public interface ExtendedServer {
    *  List<String> names =
    *    DB.find(Customer.class)
    *      .select("name")
-   *      .orderBy().asc("name")
+   *      .order().asc("name")
    *      .findSingleAttributeList();
    *
    * }</pre>
@@ -353,7 +369,7 @@ public interface ExtendedServer {
    *      .setDistinct(true)
    *      .select("name")
    *      .where().eq("status", Customer.Status.NEW)
-   *      .orderBy().asc("name")
+   *      .order().asc("name")
    *      .setMaxRows(100)
    *      .findSingleAttributeList();
    *

src/main/java/io/ebean/FetchConfig.java

@@ -148,6 +148,8 @@ public class FetchConfig implements Serializable {
 
   private boolean queryAll;
 
+  private boolean cache;
+
   /**
    * Construct the fetch configuration object.
    */
@@ -188,6 +190,17 @@ public class FetchConfig implements Serializable {
     return this;
   }
 
+  /**
+   * Eagerly fetch the beans fetching the beans from the L2 bean cache
+   * and using the DB for beans not in the cache.
+   */
+  public FetchConfig cache() {
+    this.cache = true;
+    this.queryBatchSize = 0;
+    this.queryAll = true;
+    return this;
+  }
+
   /**
    * Eagerly fetch the beans in this path as a separate query (rather than as
    * part of the main query).
@@ -247,6 +260,13 @@ public class FetchConfig implements Serializable {
     return queryAll;
   }
 
+  /**
+   * Return true if this uses L2 bean cache.
+   */
+  public boolean isCache() {
+    return cache;
+  }
+
   @Override
   public boolean equals(Object o) {
     if (this == o) return true;
@@ -255,6 +275,7 @@ public class FetchConfig implements Serializable {
     FetchConfig that = (FetchConfig) o;
     if (lazyBatchSize != that.lazyBatchSize) return false;
     if (queryBatchSize != that.queryBatchSize) return false;
+    if (cache != that.cache) return false;
     return queryAll == that.queryAll;
   }
 
@@ -263,6 +284,7 @@ public class FetchConfig implements Serializable {
     int result = lazyBatchSize;
     result = 92821 * result + queryBatchSize;
     result = 92821 * result + (queryAll ? 1 : 0);
+    result = 92821 * result + (cache ? 1 : 0);
     return result;
   }
 }

src/main/java/io/ebean/FetchGroup.java

@@ -1,5 +1,7 @@
 package io.ebean;
 
+import io.ebean.service.SpiFetchGroupQuery;
+
 import javax.annotation.Nonnull;
 
 /**
@@ -111,4 +113,11 @@ public interface FetchGroup<T> {
     return XServiceProvider.fetchGroupOf(cls);
   }
 
+  /**
+   * Return a query to be used by query beans for constructing FetchGroup.
+   */
+  static <T> SpiFetchGroupQuery<T> queryFor(Class<T> beanType) {
+    return XServiceProvider.fetchGroupQueryFor(beanType);
+  }
+
 }

src/main/java/io/ebean/FetchGroupBuilder.java

@@ -67,12 +67,26 @@ public interface FetchGroupBuilder<T> {
   @Nonnull
   FetchGroupBuilder<T> fetchQuery(String path);
 
+  /**
+   * Fetch the path including all its properties using L2 cache.
+   * Cache misses fallback to fetchQuery().
+   */
+  @Nonnull
+  FetchGroupBuilder<T> fetchCache(String path);
+
   /**
    * Fetch the path including specified properties using a query join.
    */
   @Nonnull
   FetchGroupBuilder<T> fetchQuery(String path, String properties);
 
+  /**
+   * Fetch the path including specified properties using L2 cache.
+   * Cache misses fallback to fetchQuery().
+   */
+  @Nonnull
+  FetchGroupBuilder<T> fetchCache(String path, String properties);
+
   /**
    * Fetch the path including all its properties lazily.
    */

src/main/java/io/ebean/Filter.java

@@ -86,7 +86,7 @@ public interface Filter<T> {
    * expressions.
    * </p>
    * <p>
-   * Refer to {@link Ebean#sort(List, String)} for more detail.
+   * Refer to {@link DB#sort(List, String)} for more detail.
    * </p>
    */
   Filter<T> sort(String sortByClause);

src/main/java/io/ebean/Finder.java

@@ -32,7 +32,7 @@ import java.util.List;
  *   public List<Customer> findNew() {
  *     return query().where()
  *       .eq("status", Customer.Status.NEW)
- *       .orderBy("name")
+ *       .order("name")
  *       .findList()
  *   }
  * }

src/main/java/io/ebean/Model.java

@@ -192,6 +192,13 @@ public abstract class Model {
     db().save(this);
   }
 
+  /**
+   * Save this entity with an explicit transaction.
+   */
+  public void save(Transaction transaction) {
+    db().save(this, transaction);
+  }
+
   /**
    * Flush any batched changes to the database.
    * <p>
@@ -212,6 +219,13 @@ public abstract class Model {
     db().update(this);
   }
 
+  /**
+   * Update this entity with an explicit transaction.
+   */
+  public void update(Transaction transaction) {
+    db().update(this, transaction);
+  }
+
   /**
    * Insert this entity.
    *
@@ -221,6 +235,13 @@ public abstract class Model {
     db().insert(this);
   }
 
+  /**
+   * Insert with an explicit transaction.
+   */
+  public void insert(Transaction transaction) {
+    db().insert(this, transaction);
+  }
+
   /**
    * Delete this bean.
    * <p>
@@ -242,6 +263,13 @@ public abstract class Model {
     return db().delete(this);
   }
 
+  /**
+   * Delete this entity with an explicit transaction.
+   */
+  public boolean delete(Transaction transaction) {
+    return db().delete(this, transaction);
+  }
+
   /**
    * Delete a bean permanently without soft delete.
    * <p>
@@ -255,6 +283,13 @@ public abstract class Model {
     return db().deletePermanent(this);
   }
 
+  /**
+   * Delete a bean permanently without soft delete using an explicit transaction.
+   */
+  public boolean deletePermanent(Transaction transaction) {
+    return db().deletePermanent(this, transaction);
+  }
+
   /**
    * Refreshes this entity from the database.
    *

src/main/java/io/ebean/OrderBy.java

@@ -412,7 +412,7 @@ public final class OrderBy<T> implements Serializable {
      * Support use in select clause if no collation or nulls ordering.
      */
     boolean supportsSelect() {
-      return nulls == null && collation == null;
+      return nulls == null;
     }
   }
 

src/main/java/io/ebean/PagedList.java

@@ -60,6 +60,13 @@ import java.util.concurrent.Future;
  */
 public interface PagedList<T> {
 
+  /**
+   * Return an empty PagedList.
+   */
+  static <B> PagedList<B> emptyList() {
+    return new EmptyPagedList<>();
+  }
+
   /**
    * Initiate the loading of the total row count in the background.
    * <pre>{@code

src/main/java/io/ebean/Pairs.java

@@ -30,7 +30,7 @@ import java.util.List;
  *   .where()
  *   .eq("store", "def")
  *   .inPairs(pairs)       // IN clause with 'pairs' of values
- *   .orderBy("sku desc")
+ *   .order("sku desc")
  *
  *   // query expressions cover the natural key properties
  *   // so we can choose to hit the L2 bean cache if we want

src/main/java/io/ebean/PrimaryServer.java

@@ -1,38 +1,36 @@
 package io.ebean;
 
-import io.ebean.config.properties.PropertiesLoader;
+import io.avaje.config.Config;
 
 import java.util.Properties;
 
 /**
- * Provides singleton state for the default server.
+ * Provides singleton state for the default database.
  * <p/>
- * Intended for internal use as part of bootup, construction, registration of the default server.
+ * Intended for internal use as part of bootup, construction, registration of the default database.
  */
 class PrimaryServer {
 
-  private static Properties globalProperties;
-
   private static String defaultServerName;
 
   private static boolean skip;
 
   /**
-   * Set whether to skip automatically creating the primary server.
+   * Set whether to skip automatically creating the primary database.
    */
   static synchronized void setSkip(boolean skip) {
     PrimaryServer.skip = skip;
   }
 
   /**
-   * Return true to skip automatically creating the primary server.
+   * Return true to skip automatically creating the primary database.
    */
   static synchronized boolean isSkip() {
     return skip;
   }
 
   /**
-   * Return the default server name.
+   * Return the default database name.
    */
   static synchronized String getDefaultServerName() {
     getProperties();
@@ -43,14 +41,10 @@ class PrimaryServer {
    * Return the default configuration Properties.
    */
   static synchronized Properties getProperties() {
-    if (globalProperties == null) {
-      globalProperties = PropertiesLoader.load();
-    }
     if (defaultServerName == null) {
       defaultServerName = determineDefaultServerName();
     }
-    return globalProperties;
-
+    return Config.asProperties();
   }
 
   /**
@@ -62,15 +56,9 @@ class PrimaryServer {
     defaultServerName = System.getProperty("db", defaultServerName);
     defaultServerName = System.getProperty("ebean_db", defaultServerName);
     if (isEmpty(defaultServerName)) {
-      defaultServerName = System.getProperty("datasource.default");
+      defaultServerName = Config.get("datasource.default", null);
       if (isEmpty(defaultServerName)) {
-        defaultServerName = System.getProperty("ebean.default.datasource");
-        if (isEmpty(defaultServerName)) {
-          defaultServerName = globalProperties.getProperty("datasource.default");
-          if (isEmpty(defaultServerName)) {
-            defaultServerName = globalProperties.getProperty("ebean.default.datasource");
-          }
-        }
+        defaultServerName = Config.get("ebean.default.datasource", null);
       }
     }
     if (defaultServerName == null) {

src/main/java/io/ebean/ProfileLocation.java

@@ -31,22 +31,37 @@ public interface ProfileLocation {
   }
 
   /**
-   * Obtain the location description.
+   * Obtain the description returning true if this is the initial call.
    */
-  String obtain();
+  boolean obtain();
 
   /**
    * Return a short version of the location description.
    */
-  String shortDescription();
+  String location();
 
   /**
    * Return the short label.
    */
   String label();
 
+  /**
+   * Return the full location.
+   */
+  String fullLocation();
+
   /**
    * Add execution time.
    */
   void add(long executionTime);
+
+  /**
+   * Return true if this request should be traced.
+   */
+  boolean trace();
+
+  /**
+   * Set the number of times to trace the transactions for this profile location.
+   */
+  void setTraceCount(int traceCount);
 }

src/main/java/io/ebean/Query.java

@@ -11,6 +11,7 @@ import java.util.Optional;
 import java.util.Set;
 import java.util.function.Consumer;
 import java.util.function.Predicate;
+import java.util.stream.Stream;
 
 /**
  * Object relational query for finding a List, Set, Map or single entity bean.
@@ -24,7 +25,7 @@ import java.util.function.Predicate;
  *     .where()
  *       .like("customer.name","rob%")
  *       .gt("orderDate",lastWeek)
- *     .orderBy("customer.id, id desc")
+ *     .order("customer.id, id desc")
  *     .setMaxRows(50)
  *     .findList();
  *
@@ -501,6 +502,14 @@ public interface Query<T> {
    */
   Query<T> fetchQuery(String path, String fetchProperties);
 
+  /**
+   * Fetch the path and properties using L2 bean cache.
+   *
+   * @param path            The path of the beans we are fetching from L2 cache.
+   * @param fetchProperties The properties that should be loaded.
+   */
+  Query<T> fetchCache(String path, String fetchProperties);
+
   /**
    * Fetch the path and properties lazily (via batch lazy loading).
    * <p>
@@ -587,6 +596,11 @@ public interface Query<T> {
    */
   Query<T> fetchQuery(String path);
 
+  /**
+   * Fetch the path eagerly using L2 cache.
+   */
+  Query<T> fetchCache(String path);
+
   /**
    * Fetch the path lazily (via batch lazy loading).
    * <p>
@@ -642,6 +656,11 @@ public interface Query<T> {
    */
   Query<T> usingConnection(Connection connection);
 
+  /**
+   * Execute the query using the given database.
+   */
+  Query<T> usingDatabase(Database database);
+
   /**
    * Execute the query returning the list of Id's.
    * <p>
@@ -689,6 +708,49 @@ public interface Query<T> {
   @Nonnull
   QueryIterator<T> findIterate();
 
+  /**
+   * Execute the query returning the result as a Stream.
+   * <p>
+   * Note that this will hold all resulting beans in memory using a single
+   * persistence context. Use findLargeStream() for queries that expect to
+   * return a large number of results.
+   * </p>
+   * <pre>{@code
+   *
+   *  // use try with resources to ensure Stream is closed
+   *
+   *  try (Stream<Customer> stream = query.findStream()) {
+   *    stream
+   *    .map(...)
+   *    .collect(...);
+   *  }
+   *
+   * }</pre>
+   */
+  @Nonnull
+  Stream<T> findStream();
+
+  /**
+   * Execute the query returning the result as a Stream.
+   * <p>
+   * Note that this uses multiple persistence contexts such that we can use
+   * it with a large number of results.
+   * </p>
+   * <pre>{@code
+   *
+   *  // use try with resources to ensure Stream is closed
+   *
+   *  try (Stream<Customer> stream = query.findLargeStream()) {
+   *    stream
+   *    .map(...)
+   *    .collect(...);
+   *  }
+   *
+   * }</pre>
+   */
+  @Nonnull
+  Stream<T> findLargeStream();
+
   /**
    * Execute the query processing the beans one at a time.
    * <p>
@@ -828,7 +890,7 @@ public interface Query<T> {
    *  List<String> names =
    *    DB.find(Customer.class)
    *      .select("name")
-   *      .orderBy().asc("name")
+   *      .order().asc("name")
    *      .findSingleAttributeList();
    *
    * }</pre>
@@ -841,7 +903,7 @@ public interface Query<T> {
    *      .setDistinct(true)
    *      .select("name")
    *      .where().eq("status", Customer.Status.NEW)
-   *      .orderBy().asc("name")
+   *      .order().asc("name")
    *      .setMaxRows(100)
    *      .findSingleAttributeList();
    *
@@ -1126,6 +1188,30 @@ public interface Query<T> {
    */
   Query<T> setParameter(int position, Object value);
 
+  /**
+   * Bind the next positioned parameter.
+   *
+   * <pre>{@code
+   *
+   * // a query with a positioned parameters
+   * String oql = "where status = ? and name = ?";
+   *
+   * List<Order> list = DB.createQuery(Order.class, oql)
+   *   .setParameter(OrderStatus.NEW)
+   *   .setParameter("Rob")
+   *   .findList();
+   *
+   * }</pre>
+   */
+  Query<T> setParameter(Object value);
+
+  /**
+   * Bind all the positioned parameters.
+   * <p>
+   * A convenience for multiple calls to {@link #setParameter(Object)}
+   */
+  Query<T> setParameters(Object... values);
+
   /**
    * Set the Id value to query. This is used with findOne().
    * <p>
@@ -1266,17 +1352,9 @@ public interface Query<T> {
   Query<T> having(Expression addExpressionToHaving);
 
   /**
-   * Set the order by clause replacing the existing order by clause if there is
-   * one.
-   * <p>
-   * This follows SQL syntax using commas between each property with the
-   * optional asc and desc keywords representing ascending and descending order
-   * respectively.
-   * </p>
-   * <p>
-   * This is EXACTLY the same as {@link #order(String)}.
-   * </p>
+   * Deprecated migrate to {@link #order(String)}
    */
+  @Deprecated
   Query<T> orderBy(String orderByClause);
 
   /**
@@ -1286,10 +1364,6 @@ public interface Query<T> {
    * This follows SQL syntax using commas between each property with the
    * optional asc and desc keywords representing ascending and descending order
    * respectively.
-   * </p>
-   * <p>
-   * This is EXACTLY the same as {@link #orderBy(String)}.
-   * </p>
    */
   Query<T> order(String orderByClause);
 
@@ -1299,40 +1373,24 @@ public interface Query<T> {
    * <p>
    * This will never return a null. If no order by clause exists then an 'empty'
    * OrderBy object is returned.
-   * </p>
-   * <p>
-   * This is EXACTLY the same as {@link #orderBy()}.
-   * </p>
    */
   OrderBy<T> order();
 
   /**
-   * Return the OrderBy so that you can append an ascending or descending
-   * property to the order by clause.
-   * <p>
-   * This will never return a null. If no order by clause exists then an 'empty'
-   * OrderBy object is returned.
-   * </p>
-   * <p>
-   * This is EXACTLY the same as {@link #order()}.
-   * </p>
+   * Deprecated migrate to order().
    */
+  @Deprecated
   OrderBy<T> orderBy();
 
   /**
    * Set an OrderBy object to replace any existing OrderBy clause.
-   * <p>
-   * This is EXACTLY the same as {@link #setOrderBy(OrderBy)}.
-   * </p>
    */
   Query<T> setOrder(OrderBy<T> orderBy);
 
   /**
-   * Set an OrderBy object to replace any existing OrderBy clause.
-   * <p>
-   * This is EXACTLY the same as {@link #setOrder(OrderBy)}.
-   * </p>
+   * Deprecated migrate to {@link #setOrder(OrderBy)}
    */
+  @Deprecated
   Query<T> setOrderBy(OrderBy<T> orderBy);
 
   /**
@@ -1467,17 +1525,6 @@ public interface Query<T> {
     return setUseQueryCache(enabled ? CacheMode.ON : CacheMode.OFF);
   }
 
-  /**
-   * Set an id to identify this query for profiling purposes.
-   * <p>
-   * The profileId is expected to be unique for a given bean type.
-   * </p>
-   * <p>
-   * Note that the profileId is treated as a short internally and has a MAX value of 32,767.
-   * </p>
-   */
-  Query<T> setProfileId(int profileId);
-
   /**
    * Set the profile location of this query. This is used to relate query execution metrics
    * back to a location like a specific line of code.

src/main/java/io/ebean/QueryIterator.java

@@ -23,9 +23,9 @@ import java.util.Iterator;
  * <h3>Try finally style</h3>
  * <pre>{@code
  *
- *  Query<Customer> query = server.find(Customer.class)
+ *  Query<Customer> query = database.find(Customer.class)
  *     .where().gt("id", 0)
- *     .orderBy("id")
+ *     .order("id")
  *     .setMaxRows(2);
  *
  *  QueryIterator<Customer> it = query.findIterate();

src/main/java/io/ebean/RowMapper.java

@@ -18,7 +18,7 @@ import java.sql.SQLException;
  * <pre>{@code
  *
  *    //
- *    // A mapper from ResultSet into our CustomerDto bean
+ *    // Map from ResultSet to CustomerDto bean
  *    //
  *    class CustomerMapper implements RowMapper<CustomerDto> {
  *
@@ -42,7 +42,8 @@ import java.sql.SQLException;
  *
  *  CustomerDto rob = DB.sqlQuery(sql)
  *    .setParameter(1, "Rob")
- *    .findOne(CUSTOMER_MAPPER);
+ *    .mapTo(CUSTOMER_MAPPER)
+ *    .findOne();
  *
  *
  * }</pre>

src/main/java/io/ebean/ScriptRunner.java

@@ -50,4 +50,13 @@ public interface ScriptRunner {
    */
   void run(URL resource, Map<String, String> placeholderMap);
 
+  /**
+   * Run the raw provided DDL or SQL script.
+   *
+   * @param name          The name of the script for logging purposes
+   * @param content       The SQL content
+   * @param useAutoCommit Set to true to use auto commit true and continue when any errors occur
+   */
+  void runScript(String name, String content, boolean useAutoCommit);
+
 }

src/main/java/io/ebean/SerializableConflictException.java

@@ -0,0 +1,18 @@
+package io.ebean;
+
+import javax.persistence.OptimisticLockException;
+
+/**
+ * Thrown at SERIALIZABLE isolation level for non-recoverable concurrent conflict.
+ */
+public class SerializableConflictException extends OptimisticLockException {
+
+  private static final long serialVersionUID = 1L;
+
+  /**
+   * Create with a message and cause.
+   */
+  public SerializableConflictException(String message, Throwable cause) {
+    super(message, cause);
+  }
+}

src/main/java/io/ebean/SqlQuery.java

@@ -75,17 +75,15 @@ public interface SqlQuery extends Serializable {
   SqlRow findOne();
 
   /**
-   * Execute the query returning a single result using the mapper.
-   *
-   * @param mapper Used to map each ResultSet row into the result object.
+   * Deprecated migrate to use {@link #mapTo(RowMapper)}
    */
+  @Deprecated
   <T> T findOne(RowMapper<T> mapper);
 
   /**
-   * Execute the query returning a list using the mapper.
-   *
-   * @param mapper Used to map each ResultSet row into the result object.
+   * Deprecated migrate to use {@link #mapTo(RowMapper)}
    */
+  @Deprecated
   <T> List<T> findList(RowMapper<T> mapper);
 
   /**
@@ -125,77 +123,53 @@ public interface SqlQuery extends Serializable {
   Optional<SqlRow> findOneOrEmpty();
 
   /**
-   * Execute the query returning a single scalar attribute.
-   * <pre>@{code
+   * Deprecated - migrate to <code>.mapToScalar(attributeType).findOne()</code>.
+   * <pre>{@code
    *
-   *   String sql = "select max(unit_price) from o_order_detail where order_qty > ?";
-   *
-   *   BigDecimal maxPrice = DB.sqlQuery(sql)
-   *     .setParameter(1, 2)
-   *     .findSingleAttribute(BigDecimal.class);
-   *
-   * }</pre>
-   *
-   * <p>
-   * The attributeType can be any scalar type that Ebean supports (includes javax time types, Joda types etc).
-   * </p>
-   *
-   * @param attributeType The type of the returned value
+   *    .mapToScalar(BigDecimal.class)
+   *    .findOne();
+   * }
    */
+  @Deprecated
   <T> T findSingleAttribute(Class<T> attributeType);
 
   /**
-   * Execute the query returning a single BigDecimal value.
-   * <p>
-   * This is an alias for <code>findSingleAttribute(BigDecimal.class)</code>
-   * </p>
+   * Deprecated - migrate to <code>.mapToScalar(BigDecimal.class).findOne()</code>.
+   * <pre>{@code
+   *
+   *    .mapToScalar(BigDecimal.class)
+   *    .findOne();
+   * }
    */
+  @Deprecated
   BigDecimal findSingleDecimal();
 
   /**
-   * Execute the query returning a single Long value.
-   * <p>
-   * This is an alias for <code>findSingleAttribute(Long.class)</code>
-   * </p>
+   * Deprecated - migrate to <code>.mapToScalar(Long.class).findOne()</code>.
+   * <pre>{@code
+   *
+   *    .mapToScalar(Long.class)
+   *    .findOne();
+   * }
    */
+  @Deprecated
   Long findSingleLong();
 
   /**
-   * Execute the query returning a list of scalar attribute values.
-   *
+   * Deprecated - migrate to <code>.mapToScalar(Long.class).findList()</code>.
    * <pre>{@code
    *
-   *   String sql =
-   *   " select (unit_price * order_qty) " +
-   *   " from o_order_detail " +
-   *   " where unit_price > ? " +
-   *   " order by (unit_price * order_qty) desc";
-   *
-   *   //
-   *   List<BigDecimal> lineAmounts =
-   *     DB.sqlQuery(sql)
-   *       .setParameter(1, 3)
-   *       .findSingleAttributeList(BigDecimal.class);
-   *
-   * }</pre>
-   *
-   * <p>
-   * The attributeType can be any scalar type that Ebean supports (includes javax time types, Joda types etc).
-   * </p>
-   *
-   * @param attributeType The type of the returned value
+   *    .mapToScalar(Long.class)
+   *    .findList();
+   * }
    */
+  @Deprecated
   <T> List<T> findSingleAttributeList(Class<T> attributeType);
 
-  /**
-   * The same as bind for named parameters.
-   */
-  SqlQuery setParameter(String name, Object value);
-
   /**
    * Set one of more positioned parameters.
    * <p>
-   * This is a convenient alternative to multiple calls setParameter().
+   * This is a convenient alternative to multiple calls to {@link #setParameter(Object)}.
    *
    * <pre>{@code
    *
@@ -203,27 +177,67 @@ public interface SqlQuery extends Serializable {
    *
    *   List<SqlRow> list =
    *     DB.sqlQuery(sql)
-   *       .setParams("Rob", Status.NEW)
+   *       .setParameters("Rob", Status.NEW)
    *       .findList();
    *
    *
-   *   // is the same as ...
+   *   // effectively the same as ...
+   *
+   *       .setParameter("Rob")
+   *       .setParameter("Status.NEW)
+   *
+   *   // and ...
    *
-   *   List<SqlRow> list =
-   *     DB.sqlQuery(sql)
    *       .setParameter(1, "Rob")
    *       .setParameter(2, "Status.NEW)
-   *       .findList();
    *
    * }</pre>
    */
+  SqlQuery setParameters(Object... values);
+
+  /**
+   * Deprecated migrate to setParameters(Object... values)
+   */
+  @Deprecated
   SqlQuery setParams(Object... values);
 
   /**
-   * The same as bind for positioned parameters.
+   * Set the next bind parameter by position.
+   * <pre>{@code
+   *
+   *   String sql = "select id, name from customer where name like ? and status = ?";
+   *
+   *   List<SqlRow> list =
+   *     DB.sqlQuery(sql)
+   *       .setParameter("Rob")
+   *       .setParameter("Status.NEW)
+   *       .findList();
+   *
+   *   // the same as ...
+   *
+   *       .setParameters("Rob", Status.NEW)
+   *
+   *   // and ...
+   *
+   *       .setParameter(1, "Rob")
+   *       .setParameter(2, "Status.NEW)
+   *
+   * }</pre>
+   *
+   * @param value The value to bind
+   */
+  SqlQuery setParameter(Object value);
+
+  /**
+   * Bind the parameter by its index position (1 based like JDBC).
    */
   SqlQuery setParameter(int position, Object value);
 
+  /**
+   * Bind the named parameter value.
+   */
+  SqlQuery setParameter(String name, Object value);
+
   /**
    * Set the index of the first row of the results to return.
    */
@@ -260,4 +274,59 @@ public interface SqlQuery extends Serializable {
    */
   SqlQuery setBufferFetchSizeHint(int bufferFetchSizeHint);
 
+  /**
+   * The query result maps to a single scalar value like Long, BigDecimal,
+   * String, UUID, OffsetDateTime etc.
+   * <p>
+   * Any scalar type Ebean is aware of can be used including java time
+   * types like Instant, LocalDate, OffsetDateTime, UUID, Inet, Cdir etc.
+   *
+   * <pre>{@code
+   *
+   *   String sql = " select min(updtime) from o_order_detail " +
+   *                " where unit_price > ? and updtime is not null ";
+   *
+   *   OffsetDateTime minCreated = DB.sqlQuery(sql)
+   *     .setParameter(42)
+   *     .mapToScalar(OffsetDateTime.class)
+   *     .findOne();
+   *
+   * }</pre>
+   *
+   * @param attributeType The type the result is returned as
+   * @return The query to execute via findOne() findList() etc
+   */
+  <T> TypeQuery<T> mapToScalar(Class<T> attributeType);
+
+  /**
+   * Use a RowMapper to map the result to beans.
+   *
+   * @param mapper Maps rows to beans
+   * @param <T>    The type of beans mapped to
+   * @return The query to execute by findOne() findList() etc
+   */
+  <T> TypeQuery<T> mapTo(RowMapper<T> mapper);
+
+  /**
+   * Query mapping to single scalar values.
+   *
+   * @param <T> The type of the scalar values
+   */
+  interface TypeQuery<T> {
+
+    /**
+     * Return the single value.
+     */
+    T findOne();
+
+    /**
+     * Return the single value that is optional.
+     */
+    Optional<T> findOneOrEmpty();
+
+    /**
+     * Return the list of values.
+     */
+    List<T> findList();
+  }
 }

src/main/java/io/ebean/SqlUpdate.java

@@ -126,8 +126,6 @@ public interface SqlUpdate {
    * {@link Transaction#setBatchMode(boolean)} and
    * {@link Transaction#setBatchSize(int)}.
    * </p>
-   *
-   * @see Ebean#execute(SqlUpdate)
    */
   int execute();
 
@@ -241,28 +239,47 @@ public interface SqlUpdate {
    *   String sql = "insert into audit_log (id, name, version) values (?,?,?)";
    *
    *   DB.sqlUpdate(sql)
-   *       .setParams(UUID.randomUUID(), "Hello", 1)
+   *       .setParameters(UUID.randomUUID(), "Hello", 1)
    *       .executeNow();
    *
    *
    *   // is the same as ...
    *
    *   DB.sqlUpdate(sql)
+   *       .setParameter(UUID.randomUUID())
+   *       .setParameter("Hello")
+   *       .setParameter(1)
+   *       .executeNow();
+   *
+   *   // which is the same as ...
+   *
+   *   DB.sqlUpdate(sql)
    *       .setParameter(1, UUID.randomUUID())
    *       .setParameter(2, "Hello")
    *       .setParameter(3, 1)
    *       .executeNow();
    *
    * }</pre>
-   *
    */
+  SqlUpdate setParameters(Object... values);
+
+  /**
+   * Deprecated migrate to setParameters(Object... values).
+   */
+  @Deprecated
   SqlUpdate setParams(Object... values);
 
   /**
-   * Set the next positioned parameter.
+   * Set the next bind parameter by position.
    *
    * @param value The value to bind
    */
+  SqlUpdate setParameter(Object value);
+
+  /**
+   * Deprecated migrate to setParameter(value).
+   */
+  @Deprecated
   SqlUpdate setNextParameter(Object value);
 
   /**

src/main/java/io/ebean/Transaction.java

@@ -27,7 +27,7 @@ public interface Transaction extends AutoCloseable {
    * @see Database#currentTransaction()
    */
   static Transaction current() {
-    return Ebean.currentTransaction();
+    return DB.currentTransaction();
   }
 
   /**
@@ -295,7 +295,7 @@ public interface Transaction extends AutoCloseable {
    *
    * <pre>{@code
    *
-   * try (Transaction transaction = server.beginTransaction()) {
+   * try (Transaction transaction = database.beginTransaction()) {
    *
    *   // turn on JDBC batch
    *   transaction.setBatchMode(true);
@@ -318,7 +318,7 @@ public interface Transaction extends AutoCloseable {
    * </p>
    * <pre>{@code
    *
-   * try (Transaction transaction = server.beginTransaction()) {
+   * try (Transaction transaction = database.beginTransaction()) {
    *
    *   transaction.setBatchMode(true);
    *   transaction.setBatchSize(100);

src/main/java/io/ebean/TxScope.java

@@ -12,16 +12,16 @@ import java.util.concurrent.Callable;
  * <p>
  * This information matches the features of the Transactional annotation. You
  * can use it directly with Runnable or Callable via
- * {@link Ebean#execute(TxScope, Runnable)} or
- * {@link Ebean#executeCall(TxScope, Callable)}.
+ * {@link DB#execute(TxScope, Runnable)} or
+ * {@link DB#executeCall(TxScope, Callable)}.
  * </p>
  * <p>
  * This object is used internally with the enhancement of a method with
  * Transactional annotation.
  * </p>
  *
- * @see Ebean#execute(TxScope, Runnable)
- * @see Ebean#executeCall(TxScope, Callable)
+ * @see DB#execute(TxScope, Runnable)
+ * @see DB#executeCall(TxScope, Callable)
  */
 public final class TxScope {
 

src/main/java/io/ebean/XServiceProvider.java

@@ -1,5 +1,6 @@
 package io.ebean;
 
+import io.ebean.service.SpiFetchGroupQuery;
 import io.ebean.service.SpiFetchGroupService;
 import io.ebean.service.SpiProfileLocationFactory;
 import io.ebean.service.SpiRawSqlService;
@@ -19,29 +20,23 @@ class XServiceProvider {
   private static SpiFetchGroupService fetchGroupService = initSpiFetchGroupService();
 
   private static SpiFetchGroupService initSpiFetchGroupService() {
-    Iterator<SpiFetchGroupService> loader = ServiceLoader.load(SpiFetchGroupService.class).iterator();
-    if (loader.hasNext()) {
-      return loader.next();
-    }
-    throw new IllegalStateException("No service implementation found for SpiFetchGroupService?");
+    return loadFirstService(SpiFetchGroupService.class);
   }
 
   private static SpiRawSqlService initRawSql() {
-
-    Iterator<SpiRawSqlService> loader = ServiceLoader.load(SpiRawSqlService.class).iterator();
-    if (loader.hasNext()) {
-      return loader.next();
-    }
-    throw new IllegalStateException("No service implementation found for SpiRawSqlService?");
+    return loadFirstService(SpiRawSqlService.class);
   }
 
   private static SpiProfileLocationFactory initProfileLocation() {
+    return loadFirstService(SpiProfileLocationFactory.class);
+  }
 
-    Iterator<SpiProfileLocationFactory> loader = ServiceLoader.load(SpiProfileLocationFactory.class).iterator();
+  private static <T> T loadFirstService(Class<T> cls) {
+    Iterator<T> loader = ServiceLoader.load(cls).iterator();
     if (loader.hasNext()) {
       return loader.next();
     }
-    throw new IllegalStateException("No service implementation found for SpiProfileLocationFactory?");
+    throw new IllegalStateException("No service implementation found for " + cls);
   }
 
   /**
@@ -71,4 +66,11 @@ class XServiceProvider {
   static <T> FetchGroupBuilder<T> fetchGroupOf(Class<T> cls) {
     return fetchGroupService.of(cls);
   }
+
+  /**
+   * Return the FetchGroup Query for building fetch groups via query beans.
+   */
+  static <T> SpiFetchGroupQuery<T> fetchGroupQueryFor(Class<T> cls) {
+    return fetchGroupService.queryFor(cls);
+  }
 }

src/main/java/io/ebean/bean/CallOrigin.java

@@ -0,0 +1,22 @@
+package io.ebean.bean;
+
+/**
+ * A call origin for query execution profiling to collect graph use (for query tuning).
+ */
+public interface CallOrigin {
+
+  /**
+   * Return the top element. Typically the top stack element with class and line.
+   */
+  String getTopElement();
+
+  /**
+   * Return the full description of the call origin.
+   */
+  String getFullDescription();
+
+  /**
+   * Compute and return an origin key based on the query hash.
+   */
+  String getOriginKey(int queryHash);
+}

src/main/java/io/ebean/bean/CallStack.java

@@ -3,6 +3,8 @@ package io.ebean.bean;
 import java.io.Serializable;
 import java.util.Arrays;
 
+import static io.ebean.util.EncodeB64.enc;
+
 /**
  * Represent the call stack (stack trace elements).
  * <p>
@@ -17,15 +19,15 @@ import java.util.Arrays;
  * Note the call stack is trimmed to remove the common ebean internal elements.
  * </p>
  */
-public final class CallStack implements Serializable {
+public final class CallStack implements Serializable, CallOrigin {
 
   private static final long serialVersionUID = -8590644046907438579L;
 
+  private static final String NEWLINE = "\n";
+
   private final String zeroHash;
   private final String pathHash;
-
   private final StackTraceElement[] callStack;
-
   private final int hc;
 
   public CallStack(StackTraceElement[] callStack, int zeroHash, int pathHash) {
@@ -37,12 +39,17 @@ public final class CallStack implements Serializable {
 
   private int computeHashCode() {
     int hc = 0;
-    for (StackTraceElement aCallStack : callStack) {
-      hc = 92821 * hc + aCallStack.hashCode();
+    for (StackTraceElement element : callStack) {
+      hc = 92821 * hc + element.hashCode();
     }
     return hc;
   }
 
+  @Override
+  public String toString() {
+    return zeroHash + ":" + pathHash + ":" + callStack[0];
+  }
+
   @Override
   public int hashCode() {
     return hc;
@@ -63,73 +70,29 @@ public final class CallStack implements Serializable {
   /**
    * Return the first element of the call stack.
    */
-  public StackTraceElement getFirstStackTraceElement() {
-    return callStack[0];
-  }
-
-  /**
-   * Return the call stack.
-   */
-  public StackTraceElement[] getCallStack() {
-    return callStack;
-  }
-
-  /**
-   * Return the hash for the first stack element.
-   */
-  public String getZeroHash() {
-    return zeroHash;
-  }
-
-  /**
-   * Return the hash for the stack elements (excluding first stack element).
-   */
-  public String getPathHash() {
-    return pathHash;
-  }
-
   @Override
-  public String toString() {
-    return zeroHash + ":" + pathHash + ":" + callStack[0];
+  public String getTopElement() {
+    return callStack[0].toString();
   }
 
   /**
    * Return the call stack lines appended with the given newLine string.
    */
-  public String description(String newLine) {
+  @Override
+  public String getFullDescription() {
     StringBuilder sb = new StringBuilder(400);
-    for (StackTraceElement aCallStack : callStack) {
-      sb.append(aCallStack.toString()).append(newLine);
+    for (int i = 0; i < callStack.length; i++) {
+      if (i > 0) {
+        sb.append(NEWLINE);
+      }
+      sb.append(callStack[i].toString());
     }
     return sb.toString();
   }
 
+  @Override
   public String getOriginKey(int queryHash) {
     return enc(queryHash) + "." + zeroHash + "." + pathHash;
   }
 
-  private static final int radix = 1 << 6;
-  private static final int mask = radix - 1;
-
-  /**
-   * Convert the integer to unsigned base 64.
-   */
-  public static String enc(int i) {
-    char[] buf = new char[32];
-    int charPos = 32;
-    do {
-      buf[--charPos] = intToBase64[i & mask];
-      i >>>= 6;
-    } while (i != 0);
-
-    return new String(buf, charPos, (32 - charPos));
-  }
-
-  private static final char intToBase64[] = {
-    'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
-    'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
-    'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
-    'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
-    '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '-', '_'
-  };
 }

src/main/java/io/ebean/bean/EntityBeanIntercept.java

@@ -1,6 +1,7 @@
 package io.ebean.bean;
 
-import io.ebean.Ebean;
+import io.ebean.DB;
+import io.ebean.Database;
 import io.ebean.ValuePair;
 
 import javax.persistence.EntityNotFoundException;
@@ -95,27 +96,29 @@ public final class EntityBeanIntercept implements Serializable {
   private final byte[] flags;
 
   private boolean fullyLoadedBean;
-
+  private boolean loadedFromCache;
   private Object[] origValues;
-
   private Exception[] loadErrors;
-
   private int lazyLoadProperty = -1;
-
   private Object ownerId;
   private int sortOrder;
 
   /**
    * Create a intercept with a given entity.
-   * <p>
-   * Refer to agent ProxyConstructor.
-   * </p>
    */
   public EntityBeanIntercept(Object ownerBean) {
     this.owner = (EntityBean) ownerBean;
     this.flags = new byte[owner._ebean_getPropertyNames().length];
   }
 
+  /**
+   * EXPERIMENTAL - Constructor only for use by serialization frameworks.
+   */
+  public EntityBeanIntercept() {
+    this.owner = null;
+    this.flags = null;
+  }
+
   /**
    * Return the 'owning' entity bean.
    */
@@ -303,6 +306,22 @@ public final class EntityBeanIntercept implements Serializable {
     }
   }
 
+  /**
+   * Set true when the bean has been loaded from L2 bean cache.
+   * The effect of this is that we should skip the cache if there
+   * is subsequent lazy loading (bean cache partially populated).
+   */
+  public void setLoadedFromCache(boolean loadedFromCache) {
+    this.loadedFromCache = loadedFromCache;
+  }
+
+  /**
+   * Return true if this bean was loaded from L2 bean cache.
+   */
+  public boolean isLoadedFromCache() {
+    return loadedFromCache;
+  }
+
   /**
    * Return true if the bean should be treated as readOnly. If a setter method
    * is called when it is readOnly an Exception is thrown.
@@ -772,7 +791,7 @@ public final class EntityBeanIntercept implements Serializable {
   }
 
   public boolean[] getLoaded() {
-    boolean[] ret= new boolean[flags.length];
+    boolean[] ret = new boolean[flags.length];
     for (int i = 0; i < ret.length; i++) {
       ret[i] = (flags[i] & FLAG_LOADED_PROP) != 0;
     }
@@ -800,14 +819,14 @@ public final class EntityBeanIntercept implements Serializable {
 
     synchronized (this) {
       if (beanLoader == null) {
-        BeanLoader serverLoader = (BeanLoader) Ebean.getServer(ebeanServerName);
-        if (serverLoader == null) {
-          throw new PersistenceException("Server [" + ebeanServerName + "] was not found?");
+        final Database database = DB.byName(ebeanServerName);
+        if (database == null) {
+          throw new PersistenceException("Database [" + ebeanServerName + "] was not found?");
         }
 
         // For stand alone reference bean or after deserialisation lazy load
         // using the ebeanServer. Synchronise only on the bean.
-        loadBeanInternal(loadProperty, serverLoader);
+        loadBeanInternal(loadProperty, database.getPluginApi());
         return;
       }
     }

src/main/java/io/ebean/bean/ObjectGraphOrigin.java

@@ -16,7 +16,7 @@ public final class ObjectGraphOrigin implements Serializable {
 
   private static final long serialVersionUID = 410937765287968708L;
 
-  private final CallStack callStack;
+  private final CallOrigin callOrigin;
 
   private final String beanType;
 
@@ -24,11 +24,11 @@ public final class ObjectGraphOrigin implements Serializable {
 
   private final String key;
 
-  public ObjectGraphOrigin(int queryHash, CallStack callStack, String beanType) {
-    this.callStack = callStack;
+  public ObjectGraphOrigin(int queryHash, CallOrigin callOrigin, String beanType) {
+    this.callOrigin = callOrigin;
     this.beanType = beanType;
     this.queryHash = queryHash;
-    this.key = callStack.getOriginKey(queryHash);
+    this.key = callOrigin.getOriginKey(queryHash);
   }
 
   /**
@@ -49,22 +49,22 @@ public final class ObjectGraphOrigin implements Serializable {
   /**
    * The call stack involved.
    */
-  public CallStack getCallStack() {
-    return callStack;
+  public CallOrigin getCallOrigin() {
+    return callOrigin;
   }
 
-  public String getFirstStackElement() {
-    return callStack.getFirstStackTraceElement().toString();
+  public String getTopElement() {
+    return callOrigin.getTopElement();
   }
 
   @Override
   public String toString() {
-    return "key[" + key + "] type[" + beanType + "] " + callStack.getFirstStackTraceElement() + " ";
+    return "key[" + key + "] type[" + beanType + "] " + callOrigin.getTopElement();
   }
 
   @Override
   public int hashCode() {
-    int hc = 92821 * callStack.hashCode();
+    int hc = 92821 * callOrigin.hashCode();
     hc = 92821 * hc + beanType.hashCode();
     hc = 92821 * hc + queryHash;
     return hc;
@@ -82,6 +82,6 @@ public final class ObjectGraphOrigin implements Serializable {
     ObjectGraphOrigin e = (ObjectGraphOrigin) obj;
     return e.queryHash == queryHash
       && e.beanType.equals(beanType)
-      && e.callStack.equals(callStack);
+      && e.callOrigin.equals(callOrigin);
   }
 }

src/main/java/io/ebean/bean/SingleBeanLoader.java

@@ -0,0 +1,48 @@
+package io.ebean.bean;
+
+import io.ebean.Database;
+
+/**
+ * BeanLoader used when single beans are loaded (which is usually not ideal / N+1).
+ */
+public abstract class SingleBeanLoader implements BeanLoader {
+
+  protected final Database database;
+
+  SingleBeanLoader(Database database) {
+    this.database = database;
+  }
+
+  @Override
+  public String getName() {
+    return database.getName();
+  }
+
+  /**
+   * Single bean lazy loaded when bean from L2 cache.
+   */
+  public static class L2 extends SingleBeanLoader {
+    public L2(Database database) {
+      super(database);
+    }
+
+    @Override
+    public void loadBean(EntityBeanIntercept ebi) {
+      database.getPluginApi().loadBeanL2(ebi);
+    }
+  }
+
+  /**
+   * Single bean lazy loaded when a reference bean.
+   */
+  public static class Ref extends SingleBeanLoader {
+    public Ref(Database database) {
+      super(database);
+    }
+
+    @Override
+    public void loadBean(EntityBeanIntercept ebi) {
+      database.getPluginApi().loadBeanRef(ebi);
+    }
+  }
+}

src/main/java/io/ebean/common/AbstractBeanCollection.java

@@ -1,6 +1,6 @@
 package io.ebean.common;
 
-import io.ebean.Ebean;
+import io.ebean.DB;
 import io.ebean.ExpressionList;
 import io.ebean.bean.BeanCollection;
 import io.ebean.bean.BeanCollectionLoader;
@@ -93,7 +93,7 @@ abstract class AbstractBeanCollection<E> implements BeanCollection<E> {
 
   void lazyLoadCollection(boolean onlyIds) {
     if (loader == null) {
-      loader = (BeanCollectionLoader) Ebean.getServer(ebeanServerName);
+      loader = (BeanCollectionLoader) DB.byName(ebeanServerName);
     }
     loader.loadMany(this, onlyIds);
     checkEmptyLazyLoad();

src/main/java/io/ebean/config/AbstractNamingConvention.java

@@ -83,10 +83,13 @@ public abstract class AbstractNamingConvention implements NamingConvention {
   }
 
   @Override
-  public String getSequenceName(String tableName, String pkColumn) {
-    String s = TABLE_REPLACE.matcher(sequenceFormat).replaceAll(Matcher.quoteReplacement(tableName));
+  public String getSequenceName(String rawTableName, String pkColumn) {
+    final String tableNameUnquoted = databasePlatform.unQuote(rawTableName);
+    String s = TABLE_REPLACE.matcher(sequenceFormat).replaceAll(Matcher.quoteReplacement(tableNameUnquoted));
     if (pkColumn == null) {
       pkColumn = "";
+    } else {
+      pkColumn = databasePlatform.unQuote(pkColumn);
     }
     return COLUMN_REPLACE.matcher(s).replaceAll(Matcher.quoteReplacement(pkColumn));
   }

src/main/java/io/ebean/config/DbConstraintNaming.java

@@ -88,7 +88,6 @@ public class DbConstraintNaming {
    * Return the primary key constraint name.
    */
   public String primaryKeyName(String tableName) {
-
     return pkPrefix + normaliseTable(tableName) + pkSuffix;
   }
 
@@ -103,7 +102,6 @@ public class DbConstraintNaming {
    * Return the index name associated with a foreign key constraint given multiple columns.
    */
   public String foreignKeyIndexName(String tableName, String[] columns) {
-
     String colPart = joinColumnNames(columns);
     return fkIndexPrefix + normaliseTable(tableName) + fkIndexMiddle + colPart + fkIndexSuffix;
   }
@@ -112,7 +110,6 @@ public class DbConstraintNaming {
    * Return the index name associated with a foreign key constraint given a single column foreign key.
    */
   public String foreignKeyIndexName(String tableName, String column) {
-
     String colPart = normaliseTable(column);
     return fkIndexPrefix + normaliseTable(tableName) + fkIndexMiddle + colPart + fkIndexSuffix;
   }
@@ -121,7 +118,6 @@ public class DbConstraintNaming {
    * Return the index name for a general index (not associated with a foreign key).
    */
   public String indexName(String tableName, String column) {
-
     String colPart = normaliseTable(column);
     return indexPrefix + normaliseTable(tableName) + indexMiddle + colPart + indexSuffix;
   }
@@ -130,7 +126,6 @@ public class DbConstraintNaming {
    * Return the index name for a general index (not associated with a foreign key).
    */
   public String indexName(String tableName, String[] columns) {
-
     String colPart = joinColumnNames(columns);
     return indexPrefix + normaliseTable(tableName) + indexMiddle + colPart + indexSuffix;
   }
@@ -139,7 +134,6 @@ public class DbConstraintNaming {
    * Join the column names together with underscores.
    */
   protected String joinColumnNames(String[] columns) {
-
     if (columns.length == 1) {
       return normaliseColumn(columns[0]);
     }
@@ -157,7 +151,6 @@ public class DbConstraintNaming {
    * Return the unique constraint name.
    */
   public String uniqueConstraintName(String tableName, String columnName) {
-
     return uqPrefix + normaliseTable(tableName) + "_" + normaliseColumn(columnName) + uqSuffix;
   }
 
@@ -165,7 +158,6 @@ public class DbConstraintNaming {
    * Return the unique constraint name.
    */
   public String uniqueConstraintName(String tableName, String[] columns) {
-
     String colPart = joinColumnNames(columns);
     return uqPrefix + normaliseTable(tableName) + "_" + colPart + uqSuffix;
   }
@@ -174,7 +166,6 @@ public class DbConstraintNaming {
    * Return the check constraint name.
    */
   public String checkConstraintName(String tableName, String columnName) {
-
     return ckPrefix + normaliseTable(tableName) + "_" + normaliseColumn(columnName) + ckSuffix;
   }
 

src/main/java/io/ebean/config/DbConstraintNormalise.java

@@ -41,17 +41,20 @@ public class DbConstraintNormalise {
   }
 
   /**
-   * Normalise the column name by removing any quoted identifier characters.
+   * Normalise the column name by removing any quoted identifier characters and formula brackets.
    */
   public String normaliseColumn(String columnName) {
-
-    columnName = trimQuotes(columnName);
+    columnName = trimBrackets(trimQuotes(columnName));
     if (lowerCaseColumns) {
       columnName = columnName.toLowerCase();
     }
     return columnName;
   }
 
+  private String trimBrackets(String value) {
+    return value.replace("(","").replace(")","");
+  }
+
   /**
    * Lower case the table name checking for quoted identifiers.
    */

src/main/java/io/ebean/config/DocStoreConfig.java

@@ -29,7 +29,7 @@ public class DocStoreConfig {
   protected boolean create;
 
   /**
-   * The URL of the Document store server. For example: http://localhost:9200.
+   * The URL of the Document store. For example: http://localhost:9200.
    */
   protected String url;
 
@@ -131,7 +131,7 @@ public class DocStoreConfig {
   }
 
   /**
-   * Set the URL to the Document store server.
+   * Set the URL to the Document store.
    * <p>
    * For a local ElasticSearch server this would be: http://localhost:9200
    */

src/main/java/io/ebean/config/MatchingNamingConvention.java

@@ -36,8 +36,7 @@ public class MatchingNamingConvention extends AbstractNamingConvention {
 
   @Override
   public TableName getTableNameByConvention(Class<?> beanClass) {
-
-    return new TableName(getCatalog(), getSchema(), beanClass.getSimpleName());
+    return new TableName(quoteIdentifiers(getCatalog()), quoteIdentifiers(getSchema()), quoteIdentifiers(beanClass.getSimpleName()));
   }
 
   @Override

src/main/java/io/ebean/config/ModuleInfo.java

@@ -0,0 +1,21 @@
+package io.ebean.config;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Used by generated code to hold entity classes to register with Ebean.
+ */
+@Target({ElementType.TYPE})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ModuleInfo {
+
+  /**
+   * Returns the entity classes with db name prefix.
+   * <p>
+   * The db name prefix is added to entity classes for non default databases.
+   */
+  String[] entities() default {};
+}

src/main/java/io/ebean/config/ModuleInfoLoader.java

@@ -0,0 +1,19 @@
+package io.ebean.config;
+
+import java.util.List;
+
+/**
+ * Loads and returns entity classes to register with Ebean databases.
+ */
+public interface ModuleInfoLoader {
+
+  /**
+   * Return the entity classes to register with the default DB.
+   */
+  List<Class<?>> entityClasses();
+
+  /**
+   * Return entity classes to register for a named DB (not default DB).
+   */
+  List<Class<?>> entityClassesFor(String dbName);
+}

src/main/java/io/ebean/config/PlatformConfig.java

@@ -17,6 +17,13 @@ public class PlatformConfig {
 
   private boolean allQuotedIdentifiers;
 
+  private DbConstraintNaming constraintNaming;
+
+  /**
+   * Flag set when a supplied constraintNaming is used.
+   */
+  private boolean customConstraintNaming;
+
   /**
    * The database boolean true value (typically either 1, T, or Y).
    */
@@ -27,11 +34,6 @@ public class PlatformConfig {
    */
   private String databaseBooleanFalse;
 
-  /**
-   * For DB's using sequences this is the number of sequence values prefetched.
-   */
-  private int databaseSequenceBatchSize = 20;
-
   /**
    * Set for DB's that support both Sequence and Identity (and the default choice is not desired).
    */
@@ -63,7 +65,7 @@ public class PlatformConfig {
    * Construct with defaults.
    */
   public PlatformConfig() {
-
+    this.constraintNaming = new DbConstraintNaming();
   }
 
   /**
@@ -72,7 +74,6 @@ public class PlatformConfig {
   public PlatformConfig(PlatformConfig platformConfig) {
     this.databaseBooleanFalse = platformConfig.databaseBooleanFalse;
     this.databaseBooleanTrue = platformConfig.databaseBooleanTrue;
-    this.databaseSequenceBatchSize = platformConfig.databaseSequenceBatchSize;
     this.idType = platformConfig.idType;
     this.geometrySRID = platformConfig.geometrySRID;
     this.dbUuid = platformConfig.dbUuid;
@@ -80,6 +81,19 @@ public class PlatformConfig {
     this.allQuotedIdentifiers = platformConfig.allQuotedIdentifiers;
     this.databaseInetAddressVarchar = platformConfig.databaseInetAddressVarchar;
     this.customDbTypeMappings = platformConfig.customDbTypeMappings;
+    this.constraintNaming = new DbConstraintNaming(!allQuotedIdentifiers);
+  }
+
+  public DbConstraintNaming getConstraintNaming() {
+    return constraintNaming;
+  }
+
+  /**
+   * Set a custom database constraint naming convention.
+   */
+  public void setConstraintNaming(DbConstraintNaming constraintNaming) {
+    this.customConstraintNaming = true;
+    this.constraintNaming = constraintNaming;
   }
 
   /**
@@ -94,6 +108,9 @@ public class PlatformConfig {
    */
   public void setAllQuotedIdentifiers(boolean allQuotedIdentifiers) {
     this.allQuotedIdentifiers = allQuotedIdentifiers;
+    if (!customConstraintNaming) {
+      this.constraintNaming = new DbConstraintNaming(!allQuotedIdentifiers);
+    }
   }
 
   /**
@@ -150,20 +167,6 @@ public class PlatformConfig {
     this.databaseBooleanFalse = databaseBooleanFalse;
   }
 
-  /**
-   * Return the number of DB sequence values that should be preallocated.
-   */
-  public int getDatabaseSequenceBatchSize() {
-    return databaseSequenceBatchSize;
-  }
-
-  /**
-   * Set the number of DB sequence values that should be preallocated.
-   */
-  public void setDatabaseSequenceBatchSize(int databaseSequenceBatchSize) {
-    this.databaseSequenceBatchSize = databaseSequenceBatchSize;
-  }
-
   /**
    * Return the Geometry SRID.
    */
@@ -271,7 +274,6 @@ public class PlatformConfig {
   public void loadSettings(PropertiesWrapper p) {
 
     idType = p.getEnum(IdType.class, "idType", idType);
-    databaseSequenceBatchSize = p.getInt("databaseSequenceBatchSize", databaseSequenceBatchSize);
     databaseBooleanTrue = p.get("databaseBooleanTrue", databaseBooleanTrue);
     databaseBooleanFalse = p.get("databaseBooleanFalse", databaseBooleanFalse);
     databaseInetAddressVarchar = p.getBoolean("databaseInetAddressVarchar", databaseInetAddressVarchar);

src/main/java/io/ebean/config/ServerConfig.java

@@ -1,6 +1,7 @@
 package io.ebean.config;
 
 import com.fasterxml.jackson.core.JsonFactory;
+import io.avaje.config.Config;
 import io.ebean.DatabaseFactory;
 import io.ebean.PersistenceContextScope;
 import io.ebean.Query;
@@ -13,7 +14,6 @@ import io.ebean.config.dbplatform.DatabasePlatform;
 import io.ebean.config.dbplatform.DbEncrypt;
 import io.ebean.config.dbplatform.DbType;
 import io.ebean.config.dbplatform.IdType;
-import io.ebean.config.properties.PropertiesLoader;
 import io.ebean.datasource.DataSourceConfig;
 import io.ebean.event.BeanFindController;
 import io.ebean.event.BeanPersistController;
@@ -28,7 +28,6 @@ import io.ebean.event.changelog.ChangeLogPrepare;
 import io.ebean.event.changelog.ChangeLogRegister;
 import io.ebean.event.readaudit.ReadAuditLogger;
 import io.ebean.event.readaudit.ReadAuditPrepare;
-import io.ebean.meta.MetaInfoManager;
 import io.ebean.migration.MigrationRunner;
 import io.ebean.util.StringHelper;
 
@@ -133,6 +132,15 @@ public class ServerConfig {
 
   private TenantCatalogProvider tenantCatalogProvider;
 
+  /**
+   * When true will load entity classes via ModuleInfoLoader.
+   * <p>
+   * NB: ModuleInfoLoader implementations are generated by querybean generator.
+   * Having this on and registering entity classes means we don't need to manually
+   * write that code or use classpath scanning to find entity classes.
+   */
+  private boolean loadModuleInfo;
+
   /**
    * List of interesting classes such as entities, embedded, ScalarTypes,
    * Listeners, Finders, Controllers etc.
@@ -345,26 +353,11 @@ public class ServerConfig {
    */
   private NamingConvention namingConvention = new UnderscoreNamingConvention();
 
-  /**
-   * Naming convention used in DDL generation for primary keys, foreign keys etc.
-   */
-  private DbConstraintNaming constraintNaming = new DbConstraintNaming();
-
-  /**
-   * Behaviour of update to include on the change properties.
-   */
-  private boolean updateChangesOnly = true;
-
   /**
    * Behaviour of updates in JDBC batch to by default include all properties.
    */
   private boolean updateAllPropertiesInBatch;
 
-  /**
-   * Default behaviour for updates when cascade save on a O2M or M2M to delete any missing children.
-   */
-  private boolean updatesDeleteMissingChildren = true;
-
   /**
    * Database platform configuration.
    */
@@ -425,10 +418,6 @@ public class ServerConfig {
 
   private ServerCachePlugin serverCachePlugin;
 
-  private boolean collectQueryStatsByNode = true;
-
-  private boolean collectQueryOrigins = true;
-
   /**
    * The default PersistenceContextScope used if one is not explicitly set on a query.
    */
@@ -503,6 +492,11 @@ public class ServerConfig {
    */
   private boolean collectQueryPlans;
 
+  /**
+   * The default threshold in micros for collecting query plans.
+   */
+  private long collectQueryPlanThresholdMicros = Long.MAX_VALUE;
+
   /**
    * The time in millis used to determine when a query is alerted for being slow.
    */
@@ -1056,18 +1050,6 @@ public class ServerConfig {
     this.lazyLoadBatchSize = lazyLoadBatchSize;
   }
 
-  /**
-   * Set the number of sequences to fetch/preallocate when using DB sequences.
-   * <p>
-   * This is a performance optimisation to reduce the number times Ebean
-   * requests a sequence to be used as an Id for a bean (aka reduce network
-   * chatter).
-   * </p>
-   */
-  public void setDatabaseSequenceBatchSize(int databaseSequenceBatchSize) {
-    platformConfig.setDatabaseSequenceBatchSize(databaseSequenceBatchSize);
-  }
-
   /**
    * Return the default JDBC fetchSize hint for findList queries.
    */
@@ -1615,14 +1597,14 @@ public class ServerConfig {
    * Return the constraint naming convention used in DDL generation.
    */
   public DbConstraintNaming getConstraintNaming() {
-    return constraintNaming;
+    return platformConfig.getConstraintNaming();
   }
 
   /**
    * Set the constraint naming convention used in DDL generation.
    */
   public void setConstraintNaming(DbConstraintNaming constraintNaming) {
-    this.constraintNaming = constraintNaming;
+    platformConfig.setConstraintNaming(constraintNaming);
   }
 
   /**
@@ -1834,32 +1816,6 @@ public class ServerConfig {
     this.platformConfig.setDatabaseBooleanFalse(databaseFalse);
   }
 
-  /**
-   * Return the number of DB sequence values that should be preallocated.
-   */
-  public int getDatabaseSequenceBatchSize() {
-    return platformConfig.getDatabaseSequenceBatchSize();
-  }
-
-  /**
-   * Set the number of DB sequence values that should be preallocated and cached
-   * by Ebean.
-   * <p>
-   * This is only used for DB's that use sequences and is a performance
-   * optimisation. This reduces the number of times Ebean needs to get a
-   * sequence value from the Database reducing network chatter.
-   * </p>
-   * <p>
-   * By default this value is 10 so when we need another Id (and don't have one
-   * in our cache) Ebean will fetch 10 id's from the database. Note that when
-   * the cache drops to have full (which is 5 by default) Ebean will fetch
-   * another batch of Id's in a background thread.
-   * </p>
-   */
-  public void setDatabaseSequenceBatch(int databaseSequenceBatchSize) {
-    this.platformConfig.setDatabaseSequenceBatchSize(databaseSequenceBatchSize);
-  }
-
   /**
    * Return the database platform name (can be null).
    * <p>
@@ -1892,7 +1848,7 @@ public class ServerConfig {
   }
 
   /**
-   * Return the database platform to use for this server.
+   * Return the database platform to use for this database.
    */
   public DatabasePlatform getDatabasePlatform() {
     return databasePlatform;
@@ -2288,15 +2244,21 @@ public class ServerConfig {
    * </p>
    *
    * @param cls the entity type (or other type) that should be registered by this
-   *            server.
+   *            database.
    */
   public void addClass(Class<?> cls) {
-    if (classes == null) {
-      classes = new ArrayList<>();
-    }
     classes.add(cls);
   }
 
+  /**
+   * Register all the classes (typically entity classes).
+   */
+  public void addAll(List<Class<?>> classList) {
+    if (classList != null && !classList.isEmpty()) {
+      classes.addAll(classList);
+    }
+  }
+
   /**
    * Add a package to search for entities via class path search.
    * <p>
@@ -2304,9 +2266,6 @@ public class ServerConfig {
    * </p>
    */
   public void addPackage(String packageName) {
-    if (packages == null) {
-      packages = new ArrayList<>();
-    }
     packages.add(packageName);
   }
 
@@ -2332,7 +2291,7 @@ public class ServerConfig {
 
   /**
    * Set the list of classes (entities, listeners, scalarTypes etc) that should
-   * be used for this server.
+   * be used for this database.
    * <p>
    * If no classes are specified then the classes are found automatically via
    * searching the class path.
@@ -2346,7 +2305,7 @@ public class ServerConfig {
   }
 
   /**
-   * Return the classes registered for this server. Typically this includes
+   * Return the classes registered for this database. Typically this includes
    * entities and perhaps listeners.
    */
   public List<Class<?>> getClasses() {
@@ -2409,20 +2368,6 @@ public class ServerConfig {
     this.skipCacheAfterWrite = skipCacheAfterWrite;
   }
 
-  /**
-   * Return true to only update changed properties.
-   */
-  public boolean isUpdateChangesOnly() {
-    return updateChangesOnly;
-  }
-
-  /**
-   * Set to true to only update changed properties.
-   */
-  public void setUpdateChangesOnly(boolean updateChangesOnly) {
-    this.updateChangesOnly = updateChangesOnly;
-  }
-
   /**
    * Returns true if updates in JDBC batch default to include all properties by default.
    */
@@ -2442,68 +2387,6 @@ public class ServerConfig {
     this.updateAllPropertiesInBatch = updateAllPropertiesInBatch;
   }
 
-  /**
-   * Return true if updates by default delete missing children when cascading save to a OneToMany or
-   * ManyToMany. When not set this defaults to true.
-   */
-  public boolean isUpdatesDeleteMissingChildren() {
-    return updatesDeleteMissingChildren;
-  }
-
-  /**
-   * Set if updates by default delete missing children when cascading save to a OneToMany or
-   * ManyToMany. When not set this defaults to true.
-   */
-  public void setUpdatesDeleteMissingChildren(boolean updatesDeleteMissingChildren) {
-    this.updatesDeleteMissingChildren = updatesDeleteMissingChildren;
-  }
-
-  /**
-   * Return true if query statistics should be collected by ObjectGraphNode.
-   */
-  public boolean isCollectQueryStatsByNode() {
-    return collectQueryStatsByNode;
-  }
-
-  /**
-   * Set to true to collection query execution statistics by ObjectGraphNode.
-   * <p>
-   * These statistics can be used to highlight code/query 'origin points' that result in lots of lazy loading.
-   * </p>
-   * <p>
-   * It is considered safe/fine to have this set to true for production.
-   * </p>
-   * <p>
-   * This information can be later retrieved via {@link MetaInfoManager}.
-   * </p>
-   *
-   * @see MetaInfoManager
-   */
-  public void setCollectQueryStatsByNode(boolean collectQueryStatsByNode) {
-    this.collectQueryStatsByNode = collectQueryStatsByNode;
-  }
-
-  /**
-   * Return true if query plans should also collect their 'origins'. This means for a given query plan you
-   * can identify the code/origin points where this query resulted from including lazy loading origins.
-   */
-  public boolean isCollectQueryOrigins() {
-    return collectQueryOrigins;
-  }
-
-  /**
-   * Set to true if query plans should collect their 'origin' points. This means for a given query plan you
-   * can identify the code/origin points where this query resulted from including lazy loading origins.
-   * <p>
-   * This information can be later retrieved via {@link MetaInfoManager}.
-   * </p>
-   *
-   * @see MetaInfoManager
-   */
-  public void setCollectQueryOrigins(boolean collectQueryOrigins) {
-    this.collectQueryOrigins = collectQueryOrigins;
-  }
-
   /**
    * Returns the resource directory.
    */
@@ -2825,7 +2708,7 @@ public class ServerConfig {
    * Load settings from ebean.properties.
    */
   public void loadFromProperties() {
-    this.properties = PropertiesLoader.load();
+    this.properties = Config.asProperties();
     configureFromProperties();
   }
 
@@ -2834,7 +2717,7 @@ public class ServerConfig {
    */
   public void loadFromProperties(Properties properties) {
     // keep the properties used for configuration so that these are available for plugins
-    this.properties = PropertiesLoader.eval(properties);
+    this.properties = Config.asConfiguration().eval(properties);
     configureFromProperties();
   }
 
@@ -2929,11 +2812,14 @@ public class ServerConfig {
     }
     loadDocStoreSettings(p);
 
+    loadModuleInfo = p.getBoolean("loadModuleInfo", loadModuleInfo);
+    maxCallStack = p.getInt("maxCallStack", maxCallStack);
     dumpMetricsOnShutdown = p.getBoolean("dumpMetricsOnShutdown", dumpMetricsOnShutdown);
     dumpMetricsOptions = p.get("dumpMetricsOptions", dumpMetricsOptions);
     queryPlanTTLSeconds = p.getInt("queryPlanTTLSeconds", queryPlanTTLSeconds);
     slowQueryMillis = p.getLong("slowQueryMillis", slowQueryMillis);
     collectQueryPlans = p.getBoolean("collectQueryPlans", collectQueryPlans);
+    collectQueryPlanThresholdMicros = p.getLong("collectQueryPlanThresholdMicros", collectQueryPlanThresholdMicros);
     docStoreOnly = p.getBoolean("docStoreOnly", docStoreOnly);
     disableL2Cache = p.getBoolean("disableL2Cache", disableL2Cache);
     enabledL2Regions = p.get("enabledL2Regions", enabledL2Regions);
@@ -2960,15 +2846,8 @@ public class ServerConfig {
     String packagesProp = p.get("search.packages", p.get("packages", null));
     packages = getSearchList(packagesProp, packages);
 
-    collectQueryStatsByNode = p.getBoolean("collectQueryStatsByNode", collectQueryStatsByNode);
-    collectQueryOrigins = p.getBoolean("collectQueryOrigins", collectQueryOrigins);
-
     skipCacheAfterWrite = p.getBoolean("skipCacheAfterWrite", skipCacheAfterWrite);
     updateAllPropertiesInBatch = p.getBoolean("updateAllPropertiesInBatch", updateAllPropertiesInBatch);
-    updateChangesOnly = p.getBoolean("updateChangesOnly", updateChangesOnly);
-
-    boolean defaultDeleteMissingChildren = p.getBoolean("defaultDeleteMissingChildren", updatesDeleteMissingChildren);
-    updatesDeleteMissingChildren = p.getBoolean("updatesDeleteMissingChildren", defaultDeleteMissingChildren);
 
     if (p.get("batch.mode") != null || p.get("persistBatching") != null) {
       throw new IllegalArgumentException("Property 'batch.mode' or 'persistBatching' is being set but no longer used. Please change to use 'persistBatchMode'");
@@ -3059,20 +2938,20 @@ public class ServerConfig {
       return classes;
     }
 
-    List<Class<?>> classes = new ArrayList<>();
+    List<Class<?>> classList = new ArrayList<>();
 
     String[] split = StringHelper.splitNames(classNames);
     for (String cn : split) {
       if (!"class".equalsIgnoreCase(cn)) {
         try {
-          classes.add(Class.forName(cn));
+          classList.add(Class.forName(cn));
         } catch (ClassNotFoundException e) {
           String msg = "Error registering class [" + cn + "] from [" + classNames + "]";
           throw new RuntimeException(msg, e);
         }
       }
     }
-    return classes;
+    return classList;
   }
 
   private List<String> getSearchList(String searchNames, List<String> defaultValue) {
@@ -3326,6 +3205,20 @@ public class ServerConfig {
     this.collectQueryPlans = collectQueryPlans;
   }
 
+  /**
+   * Return the query plan collection threshold in microseconds.
+   */
+  public long getCollectQueryPlanThresholdMicros() {
+    return collectQueryPlanThresholdMicros;
+  }
+
+  /**
+   * Set the query plan collection threshold in microseconds.
+   */
+  public void setCollectQueryPlanThresholdMicros(long collectQueryPlanThresholdMicros) {
+    this.collectQueryPlanThresholdMicros = collectQueryPlanThresholdMicros;
+  }
+
   /**
    * Return true if metrics should be dumped when the server is shutdown.
    */
@@ -3356,6 +3249,17 @@ public class ServerConfig {
     this.dumpMetricsOptions = dumpMetricsOptions;
   }
 
+  /**
+   * Return true if entity classes should be loaded and registered via ModuleInfoLoader.
+   * <p>
+   * When false we either register entity classes via application code or use classpath
+   * scanning to find and register entity classes.
+   * </p>
+   */
+  public boolean isAutoLoadModuleInfo() {
+    return loadModuleInfo && classes.isEmpty();
+  }
+
   public enum UuidVersion {
     VERSION4,
     VERSION1,

src/main/java/io/ebean/config/dbplatform/DataErrorType.java

@@ -18,5 +18,10 @@ public enum DataErrorType {
   /**
    * Data integrity error like an invalid foreign key.
    */
-  DataIntegrity
+  DataIntegrity,
+
+  /**
+   * Non recoverable concurrency conflict.
+   */
+  SerializableConflict
 }

src/main/java/io/ebean/config/dbplatform/DatabasePlatform.java

@@ -51,6 +51,8 @@ public class DatabasePlatform {
 
   protected boolean supportsDeleteTableAlias;
 
+  protected boolean supportsSavepointId = true;
+
   /**
    * The behaviour used when ending a read only transaction at read committed isolation level.
    */
@@ -73,6 +75,11 @@ public class DatabasePlatform {
 
   protected boolean caseSensitiveCollation = true;
 
+  /**
+   * Set true if the Database support LIMIT clause on sql update.
+   */
+  protected boolean inlineSqlUpdateLimit;
+
   /**
    * For limit/offset, row_number etc limiting of SQL queries.
    */
@@ -103,10 +110,6 @@ public class DatabasePlatform {
    */
   protected DbIdentity dbIdentity = new DbIdentity();
 
-  protected boolean sequenceBatchMode = true;
-
-  protected int sequenceBatchSize = 20;
-
   /**
    * The history support for this database platform.
    */
@@ -137,9 +140,9 @@ public class DatabasePlatform {
    */
   protected Platform platform = Platform.GENERIC;
 
-  protected String columnAliasPrefix = "c";
+  protected String truncateTable = "truncate table %s";
 
-  protected String tableAliasPlaceHolder = "${ta}";
+  protected String columnAliasPrefix = "c";
 
   /**
    * Use a BackTick ` at the beginning and end of table or column names that you
@@ -167,13 +170,14 @@ public class DatabasePlatform {
   /**
    * Characters escaped for startsWith, endsWith and contains.
    */
-  protected char[] likeSpecialCharacters = { '%', '_', '|' };
+  protected char[] likeSpecialCharacters = {'%', '_', '|'};
 
   protected DbEncrypt dbEncrypt;
 
   protected boolean idInExpandedForm;
 
   protected boolean selectCountWithAlias;
+  protected boolean selectCountWithColumnAlias;
 
   /**
    * If set then use the FORWARD ONLY hint when creating ResultSets for
@@ -183,7 +187,7 @@ public class DatabasePlatform {
 
   /**
    * If set then use the CONCUR_UPDATABLE hint when creating ResultSets.
-   *
+   * <p>
    * This is {@code false} for HANA
    */
   protected boolean supportsResultSetConcurrencyModeUpdatable = true;
@@ -227,7 +231,6 @@ public class DatabasePlatform {
    * Configure the platform given the server configuration.
    */
   public void configure(PlatformConfig config) {
-    this.sequenceBatchSize = config.getDatabaseSequenceBatchSize();
     this.caseSensitiveCollation = config.isCaseSensitiveCollation();
     configureIdType(config.getIdType());
     configure(config, config.isAllQuotedIdentifiers());
@@ -270,7 +273,7 @@ public class DatabasePlatform {
    * Return true if this matches the given platform.
    */
   public boolean isPlatform(Platform platform) {
-    return this.platform == platform;
+    return this.platform.base() == platform;
   }
 
   /**
@@ -290,20 +293,6 @@ public class DatabasePlatform {
     return platform.name().toLowerCase();
   }
 
-  /**
-   * Return true if we are using Sequence batch mode rather than STEP.
-   */
-  public boolean isSequenceBatchMode() {
-    return sequenceBatchMode;
-  }
-
-  /**
-   * Set to false to not use sequence batch mode but instead STEP mode.
-   */
-  public void setSequenceBatchMode(boolean sequenceBatchMode) {
-    this.sequenceBatchMode = sequenceBatchMode;
-  }
-
   /**
    * Return true if this database platform supports native ILIKE expression.
    */
@@ -328,6 +317,20 @@ public class DatabasePlatform {
     return caseSensitiveCollation;
   }
 
+  /**
+   * Return true if the platform supports SavepointId values.
+   */
+  public boolean isSupportsSavepointId() {
+    return supportsSavepointId;
+  }
+
+  /**
+   * Return true if the platform supports LIMIT with sql update.
+   */
+  public boolean isInlineSqlUpdateLimit() {
+    return inlineSqlUpdateLimit;
+  }
+
   /**
    * Return the maximum table name length.
    * <p>
@@ -362,10 +365,10 @@ public class DatabasePlatform {
    * @param be        the BackgroundExecutor that can be used to load the sequence if
    *                  desired
    * @param ds        the DataSource
-   * @param stepSize  the sequence allocation size as defined by mapping (defaults to 50)
+   * @param increment the sequence allocation size as defined by mapping (defaults to 50)
    * @param seqName   the name of the sequence
    */
-  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int stepSize, String seqName) {
+  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int increment, String seqName) {
     return null;
   }
 
@@ -455,20 +458,6 @@ public class DatabasePlatform {
     this.columnAliasPrefix = columnAliasPrefix;
   }
 
-  /**
-   * Return the table alias placeholder.
-   */
-  public String getTableAliasPlaceHolder() {
-    return tableAliasPlaceHolder;
-  }
-
-  /**
-   * Set the table alias placeholder.
-   */
-  public void setTableAliasPlaceHolder(String tableAliasPlaceHolder) {
-    this.tableAliasPlaceHolder = tableAliasPlaceHolder;
-  }
-
   /**
    * Return the close quote for quoted identifiers.
    */
@@ -568,7 +557,7 @@ public class DatabasePlatform {
   /**
    * Normally not needed - overridden in CockroachPlatform.
    */
-  public boolean isDdlCommitOnCreateIndex() {
+  public boolean isDdlAutoCommit() {
     return false;
   }
 
@@ -648,7 +637,7 @@ public class DatabasePlatform {
     if (dbName != null && !dbName.isEmpty()) {
       if (dbName.startsWith(openQuote)) {
         // trim off the open and close quotes
-        return dbName.substring(1, dbName.length()-1);
+        return dbName.substring(1, dbName.length() - 1);
       }
     }
     return dbName;
@@ -661,6 +650,14 @@ public class DatabasePlatform {
     return selectCountWithAlias;
   }
 
+  /**
+   * Return true if select count with subquery needs column alias (SQL Server).
+   */
+  public boolean isSelectCountWithColumnAlias() {
+    return selectCountWithColumnAlias;
+  }
+
+
   public String completeSql(String sql, Query<?> query) {
     if (query.isForUpdate()) {
       sql = withForUpdate(sql, query.getForUpdateMode());
@@ -699,6 +696,13 @@ public class DatabasePlatform {
     return persistBatchOnCascade;
   }
 
+  /**
+   * Return a statement to truncate a table.
+   */
+  public String truncateStatement(String table) {
+    return String.format(truncateTable, table);
+  }
+
   /**
    * Create the DB schema if it does not exist.
    */
@@ -768,7 +772,7 @@ public class DatabasePlatform {
     for (int i = 0; i < value.length(); i++) {
       char ch = value.charAt(i);
       boolean escaped = false;
-      for (char escapeChar: likeSpecialCharacters) {
+      for (char escapeChar : likeSpecialCharacters) {
         if (ch == escapeChar) {
           if (sb == null) {
             sb = new StringBuilder(value.substring(0, i));

src/main/java/io/ebean/config/dbplatform/DbPlatformTypeMapping.java

@@ -29,6 +29,8 @@ public class DbPlatformTypeMapping {
 
   private static final DbPlatformType INET_NATIVE = new DbPlatformType("inet", false);
   private static final DbPlatformType INET_VARCHAR = new DbPlatformType("varchar", 50);
+  private static final DbPlatformType CIDR_NATIVE = new DbPlatformType("cidr", false);
+  private static final DbPlatformType CIDR_VARCHAR = new DbPlatformType("varchar", 50);
 
   private static final DbPlatformType UUID_NATIVE = new DbPlatformType("uuid", false);
   @SuppressWarnings("unused")
@@ -110,6 +112,7 @@ public class DbPlatformTypeMapping {
       put(DbType.JSONVARCHAR, new DbPlatformType("jsonvarchar", 1000));
       put(DbType.UUID, UUID_NATIVE);
       put(DbType.INET, INET_NATIVE);
+      put(DbType.CIDR, CIDR_NATIVE);
 
     } else {
       put(DbType.VARCHAR, new DbPlatformType("varchar", 255));
@@ -126,6 +129,7 @@ public class DbPlatformTypeMapping {
       // default to native UUID and override on platform configure()
       put(DbType.UUID, UUID_NATIVE);
       put(DbType.INET, INET_VARCHAR);
+      put(DbType.CIDR, CIDR_VARCHAR);
     }
   }
 

src/main/java/io/ebean/config/dbplatform/DbType.java

@@ -36,7 +36,7 @@ public enum DbType {
 
   UUID(ExtraDbTypes.UUID),
   INET(ExtraDbTypes.INET),
-  CDIR(ExtraDbTypes.CDIR),
+  CIDR(ExtraDbTypes.CIDR),
 
   POINT(ExtraDbTypes.POINT),
   POLYGON(ExtraDbTypes.POLYGON),

src/main/java/io/ebean/config/dbplatform/ExtraDbTypes.java

@@ -41,7 +41,7 @@ public interface ExtraDbTypes {
   int JSONBlob = 5005;
 
   int INET = 5020;
-  int CDIR = 5021;
+  int CIDR = 5021;
 
   /**
    * Geo Point

src/main/java/io/ebean/config/dbplatform/IdType.java

@@ -35,6 +35,11 @@ public enum IdType {
    * Used when the key is a compound key or lookup table code.
    * </p>
    */
-  EXTERNAL
+  EXTERNAL,
+
+  /**
+   * Auto mapping to platform preferred identity strategy.
+   */
+  AUTO
 
 }

src/main/java/io/ebean/config/dbplatform/LimitOffsetSqlLimiter.java

@@ -40,8 +40,7 @@ public class LimitOffsetSqlLimiter implements SqlLimiter {
     }
 
     String sql = request.getDbPlatform().completeSql(sb.toString(), request.getOrmQuery());
-
-    return new SqlLimitResponse(sql, false);
+    return new SqlLimitResponse(sql);
   }
 
 }

src/main/java/io/ebean/config/dbplatform/RowNumberSqlLimiter.java

@@ -1,75 +0,0 @@
-package io.ebean.config.dbplatform;
-
-/**
- * Adds the ROW_NUMBER() OVER function to a query.
- */
-public class RowNumberSqlLimiter implements SqlLimiter {
-
-  /**
-   * ROW_NUMBER() OVER (ORDER BY
-   */
-  private static final String ROW_NUMBER_OVER = "row_number() over (order by ";
-
-  /**
-   * ) as rn,
-   */
-  private static final String ROW_NUMBER_AS = ") as rn, ";
-
-  private final String rowNumberWindowAlias;
-
-  /**
-   * Specify the name of the rowNumberWindowAlias.
-   */
-  public RowNumberSqlLimiter(String rowNumberWindowAlias) {
-    this.rowNumberWindowAlias = rowNumberWindowAlias;
-  }
-
-  public RowNumberSqlLimiter() {
-    this("as limitresult");
-  }
-
-  @Override
-  public SqlLimitResponse limit(SqlLimitRequest request) {
-
-    String dbSql = request.getDbSql();
-
-    StringBuilder sb = new StringBuilder(60 + dbSql.length());
-
-    int firstRow = request.getFirstRow();
-
-    int lastRow = request.getMaxRows();
-    if (lastRow > 0) {
-      lastRow += firstRow;
-    }
-
-    sb.append("select * from ( ");
-
-    sb.append("select ");
-    if (request.isDistinct()) {
-      sb.append("distinct ");
-    }
-
-    sb.append(ROW_NUMBER_OVER);
-    sb.append(request.getDbOrderBy());
-    sb.append(ROW_NUMBER_AS);
-
-    sb.append(dbSql);
-
-    sb.append(" ) ");
-    sb.append(rowNumberWindowAlias);
-    sb.append(" where ");
-    if (firstRow > 0) {
-      sb.append(" rn > ").append(firstRow);
-      if (lastRow > 0) {
-        sb.append(" and ");
-      }
-    }
-    if (lastRow > 0) {
-      sb.append(" rn <= ").append(lastRow);
-    }
-
-    String sql = request.getDbPlatform().completeSql(sb.toString(), request.getOrmQuery());
-
-    return new SqlLimitResponse(sql, true);
-  }
-}

src/main/java/io/ebean/config/dbplatform/RownumSqlLimiter.java

@@ -1,81 +0,0 @@
-package io.ebean.config.dbplatform;
-
-/**
- * Add ROWNUM column etc around SQL query to limit results.
- */
-public class RownumSqlLimiter implements SqlLimiter {
-
-  private final String rnum;
-
-  private final boolean useFirstRowsHint;
-
-  /**
-   * Create with default inner rownum column alias and used FIRST_ROWS hint.
-   */
-  public RownumSqlLimiter() {
-    this("rn_", true);
-  }
-
-  /**
-   * Specify the inner rownum column alias and whether to include the FIRST_ROWS
-   * hint.
-   */
-  public RownumSqlLimiter(String rnum, boolean useFirstRowsHint) {
-    this.rnum = rnum;
-    this.useFirstRowsHint = useFirstRowsHint;
-  }
-
-  @Override
-  public SqlLimitResponse limit(SqlLimitRequest request) {
-
-    // select *
-    // from ( select /*+ FIRST_ROWS(n) */ ROWNUM rnum, a.*
-    // from ( your_query_goes_here,
-    // with order by ) a
-    // where ROWNUM <=
-    // :MAX_ROW_TO_FETCH )
-    // where rnum >= :MIN_ROW_TO_FETCH;
-
-    String dbSql = request.getDbSql();
-
-    StringBuilder sb = new StringBuilder(60 + dbSql.length());
-
-    int firstRow = request.getFirstRow();
-
-    int lastRow = request.getMaxRows();
-    if (lastRow > 0) {
-      lastRow += firstRow;
-    }
-
-    sb.append("select * from ( ");
-
-    sb.append("select ");
-    if (useFirstRowsHint && request.getMaxRows() > 0) {
-      sb.append("/*+ FIRST_ROWS(").append(request.getMaxRows()).append(") */ ");
-    }
-
-    sb.append("rownum ").append(rnum).append(", a.* ");
-    sb.append(" from (");
-
-    sb.append(" select ");
-    if (request.isDistinct()) {
-      sb.append("distinct ");
-    }
-    sb.append(dbSql);
-
-    sb.append(NEW_LINE).append("  ) a ");
-    if (lastRow > 0) {
-      sb.append(" where rownum <= ").append(lastRow);
-    }
-    sb.append(" ) ");
-    if (firstRow > 0) {
-      sb.append(" where ");
-      sb.append(rnum).append(" > ").append(firstRow);
-    }
-
-    String sql = request.getDbPlatform().completeSql(sb.toString(), request.getOrmQuery());
-
-    return new SqlLimitResponse(sql, true);
-  }
-
-}

src/main/java/io/ebean/config/dbplatform/SequenceBatchIdGenerator.java

@@ -1,57 +0,0 @@
-package io.ebean.config.dbplatform;
-
-import io.ebean.BackgroundExecutor;
-
-import javax.sql.DataSource;
-import java.sql.ResultSet;
-import java.sql.SQLException;
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Database sequence based IdGenerator using Sequence Step 1 but batch fetch many sequence values.
- */
-public abstract class SequenceBatchIdGenerator extends SequenceIdGenerator {
-
-  /**
-   * Construct where batchSize is the sequence step size.
-   *
-   */
-  public SequenceBatchIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int batchSize) {
-    super(be, ds, seqName, batchSize);
-  }
-
-  /**
-   * If allocateSize is large load some sequences in a background thread.
-   * <p>
-   * For example, when inserting a bean with a cascade on a OneToMany with many
-   * beans Ebean can call this to ensure .
-   * </p>
-   */
-  @Override
-  public void preAllocateIds(int requestSize) {
-    if (allocationSize > 1 && requestSize > allocationSize) {
-      // only bother if allocateSize is bigger than
-      // the normal loading batchSize
-      if (requestSize > 100) {
-        // max out at 100 for now
-        requestSize = 100;
-      }
-      loadInBackground(requestSize);
-    }
-  }
-
-  /**
-   * Add the next set of Ids as the next value plus all the following numbers up to the step size.
-   */
-  @Override
-  protected List<Long> readIds(ResultSet resultSet, int loadSize) throws SQLException {
-
-    List<Long> newIds = new ArrayList<>(loadSize);
-    while (resultSet.next()) {
-      newIds.add(resultSet.getLong(1));
-    }
-    return newIds;
-  }
-
-}

src/main/java/io/ebean/config/dbplatform/SequenceIdGenerator.java

@@ -12,9 +12,10 @@ import java.sql.Connection;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.SQLException;
-import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.NavigableSet;
+import java.util.TreeSet;
 
 /**
  * Database sequence based IdGenerator.
@@ -42,7 +43,7 @@ public abstract class SequenceIdGenerator implements PlatformIdGenerator {
 
   protected final BackgroundExecutor backgroundExecutor;
 
-  protected final ArrayList<Long> idList = new ArrayList<>(50);
+  protected final NavigableSet<Long> idList = new TreeSet<>();
 
   protected final int allocationSize;
 
@@ -58,7 +59,7 @@ public abstract class SequenceIdGenerator implements PlatformIdGenerator {
     this.allocationSize = allocationSize;
   }
 
-  public abstract String getSql(int batchSize);
+  public abstract String getSql();
 
   /**
    * Returns the sequence name.
@@ -97,15 +98,13 @@ public abstract class SequenceIdGenerator implements PlatformIdGenerator {
   @Override
   public Object nextId(Transaction t) {
     synchronized (monitor) {
-
       int size = idList.size();
       if (size > 0) {
         maybeLoadMoreInBackground(size);
       } else {
-        loadMore(allocationSize);
+        loadMore();
       }
-
-      return idList.remove(0);
+      return idList.pollFirst();
     }
   }
 
@@ -117,8 +116,8 @@ public abstract class SequenceIdGenerator implements PlatformIdGenerator {
     }
   }
 
-  private void loadMore(int requestSize) {
-    List<Long> newIds = getMoreIds(requestSize);
+  private void loadMore() {
+    List<Long> newIds = getMoreIds();
     synchronized (monitor) {
       idList.addAll(newIds);
     }
@@ -140,7 +139,7 @@ public abstract class SequenceIdGenerator implements PlatformIdGenerator {
       currentlyBackgroundLoading = true;
 
       backgroundExecutor.execute(() -> {
-        loadMore(requestSize);
+        loadMore();
         synchronized (backgroundLoadMonitor) {
           currentlyBackgroundLoading = false;
         }
@@ -151,14 +150,14 @@ public abstract class SequenceIdGenerator implements PlatformIdGenerator {
   /**
    * Read the resultSet returning the list of Id values.
    */
-  protected abstract List<Long> readIds(ResultSet resultSet, int loadSize) throws SQLException;
+  protected abstract List<Long> readIds(ResultSet resultSet) throws SQLException;
 
   /**
    * Get more Id's by executing a query and reading the Id's returned.
    */
-  protected List<Long> getMoreIds(int requestSize) {
+  protected List<Long> getMoreIds() {
 
-    String sql = getSql(requestSize);
+    String sql = getSql();
 
     Connection connection = null;
     PreparedStatement statement = null;
@@ -169,7 +168,7 @@ public abstract class SequenceIdGenerator implements PlatformIdGenerator {
       statement = connection.prepareStatement(sql);
       resultSet = statement.executeQuery();
 
-      List<Long> newIds = readIds(resultSet, requestSize);
+      List<Long> newIds = readIds(resultSet);
       if (logger.isTraceEnabled()) {
         logger.trace("seq:{} loaded:{} sql:{}", seqName, newIds.size(), sql);
       }

src/main/java/io/ebean/config/dbplatform/SequenceStepIdGenerator.java

@@ -13,19 +13,25 @@ import java.util.List;
  */
 public abstract class SequenceStepIdGenerator extends SequenceIdGenerator {
 
+  private final String nextSql;
   /**
    * Construct with stepSize (typically 50).
    */
-  protected SequenceStepIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int stepSize) {
+  protected SequenceStepIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int stepSize, String nextSql) {
     super(be, ds, seqName, stepSize);
+    this.nextSql = nextSql;
+  }
+
+  @Override
+  public String getSql() {
+    return nextSql;
   }
 
   /**
    * Add the next set of Ids as the next value plus all the following numbers up to the step size.
    */
   @Override
-  protected List<Long> readIds(ResultSet resultSet, int ignoreRequestSize) throws SQLException {
-
+  protected List<Long> readIds(ResultSet resultSet) throws SQLException {
     List<Long> newIds = new ArrayList<>(allocationSize);
     if (resultSet.next()) {
       long start = resultSet.getLong(1);

src/main/java/io/ebean/config/dbplatform/SqlCodeTranslator.java

@@ -3,6 +3,7 @@ package io.ebean.config.dbplatform;
 import io.ebean.AcquireLockException;
 import io.ebean.DataIntegrityException;
 import io.ebean.DuplicateKeyException;
+import io.ebean.SerializableConflictException;
 
 import javax.persistence.PersistenceException;
 import java.sql.SQLException;
@@ -14,12 +15,12 @@ import java.util.Map;
  */
 public class SqlCodeTranslator implements SqlExceptionTranslator {
 
-  private final Map<String,DataErrorType> map;
+  private final Map<String, DataErrorType> map;
 
   /**
    * Create given the map of SQLState codes to error types.
    */
-  public SqlCodeTranslator(Map<String,DataErrorType> map) {
+  public SqlCodeTranslator(Map<String, DataErrorType> map) {
     this.map = map;
   }
 
@@ -46,6 +47,8 @@ public class SqlCodeTranslator implements SqlExceptionTranslator {
           return new DuplicateKeyException(message, e);
         case DataIntegrity:
           return new DataIntegrityException(message, e);
+        case SerializableConflict:
+          return new SerializableConflictException(message, e);
       }
     }
     // return a generic exception

src/main/java/io/ebean/config/dbplatform/SqlErrorCodes.java

@@ -8,7 +8,7 @@ import java.util.Map;
  */
 public class SqlErrorCodes {
 
-  private final Map<String,DataErrorType> map = new HashMap<>();
+  private final Map<String, DataErrorType> map = new HashMap<>();
 
   /**
    * Map the codes to AcquireLockException.
@@ -31,6 +31,13 @@ public class SqlErrorCodes {
     return add(DataErrorType.DuplicateKey, codes);
   }
 
+  /**
+   * Map the codes to SerializableConflictException.
+   */
+  public SqlErrorCodes addSerializableConflict(String... codes) {
+    return add(DataErrorType.SerializableConflict, codes);
+  }
+
   private SqlErrorCodes add(DataErrorType type, String... codes) {
     for (String code : codes) {
       map.put(code, type);

src/main/java/io/ebean/config/dbplatform/SqlLimitResponse.java

@@ -7,14 +7,11 @@ public class SqlLimitResponse {
 
   final String sql;
 
-  final boolean includesRowNumberColumn;
-
   /**
    * Create the response.
    */
-  public SqlLimitResponse(String sql, boolean includesRowNumberColumn) {
+  public SqlLimitResponse(String sql) {
     this.sql = sql;
-    this.includesRowNumberColumn = includesRowNumberColumn;
   }
 
   /**
@@ -24,11 +21,4 @@ public class SqlLimitResponse {
     return sql;
   }
 
-  /**
-   * Returns true if a ROW_NUMBER column is used in the query.
-   */
-  public boolean isIncludesRowNumberColumn() {
-    return includesRowNumberColumn;
-  }
-
 }

src/main/java/io/ebean/config/dbplatform/clickhouse/ClickHousePlatform.java

@@ -47,7 +47,7 @@ public class ClickHousePlatform extends DatabasePlatform {
 
     dbTypeMap.put(DbType.UUID, new DbPlatformType("UUID", false));
     dbTypeMap.put(DbType.INET, new DbPlatformType("String", false));
-    dbTypeMap.put(DbType.CDIR, new DbPlatformType("String", false));
+    dbTypeMap.put(DbType.CIDR, new DbPlatformType("String", false));
   }
 
   @Override

src/main/java/io/ebean/config/dbplatform/clickhouse/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Clickhouse DB specific support.
+ */
+package io.ebean.config.dbplatform.clickhouse;

src/main/java/io/ebean/config/dbplatform/cockroach/CockroachPlatform.java

@@ -21,7 +21,7 @@ public class CockroachPlatform extends PostgresPlatform {
    * Needs a commit after create index such that alter table add foreign key ... succeeds.
    */
   @Override
-  public boolean isDdlCommitOnCreateIndex() {
+  public boolean isDdlAutoCommit() {
     return true;
   }
 

src/main/java/io/ebean/config/dbplatform/cockroach/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Cockroach DB specific support.
+ */
+package io.ebean.config.dbplatform.cockroach;

src/main/java/io/ebean/config/dbplatform/db2/DB2Platform.java

@@ -22,6 +22,7 @@ public class DB2Platform extends DatabasePlatform {
     this.platform = Platform.DB2;
     this.maxTableNameLength = 18;
     this.maxConstraintNameLength = 18;
+    this.truncateTable = "truncate table %s reuse storage ignore delete triggers immediate";
     this.sqlLimiter = new Db2SqlLimiter();
 
     this.dbIdentity.setSupportsGetGeneratedKeys(true);
@@ -51,9 +52,8 @@ public class DB2Platform extends DatabasePlatform {
    * sequence values.
    */
   @Override
-  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int stepSize, String seqName) {
-
-    return new DB2SequenceIdGenerator(be, ds, seqName, sequenceBatchSize);
+  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int increment, String seqName) {
+    return new DB2Sequence(be, ds, seqName, increment);
   }
 
 }

src/main/java/io/ebean/config/dbplatform/db2/DB2Sequence.java

@@ -0,0 +1,17 @@
+package io.ebean.config.dbplatform.db2;
+
+import io.ebean.BackgroundExecutor;
+import io.ebean.config.dbplatform.SequenceStepIdGenerator;
+
+import javax.sql.DataSource;
+
+/**
+ * DB2 specific sequence Id Generator.
+ */
+class DB2Sequence extends SequenceStepIdGenerator {
+
+  DB2Sequence(BackgroundExecutor be, DataSource ds, String seqName, int stepSize) {
+    super(be, ds, seqName, stepSize, "values nextval for " + seqName);
+  }
+
+}

src/main/java/io/ebean/config/dbplatform/db2/DB2SequenceIdGenerator.java

@@ -1,35 +0,0 @@
-package io.ebean.config.dbplatform.db2;
-
-import io.ebean.BackgroundExecutor;
-import io.ebean.config.dbplatform.SequenceBatchIdGenerator;
-
-import javax.sql.DataSource;
-
-/**
- * DB2 specific sequence Id Generator.
- */
-public class DB2SequenceIdGenerator extends SequenceBatchIdGenerator {
-
-  private final String baseSql;
-  private final String unionBaseSql;
-
-  /**
-   * Construct given a dataSource and sql to return the next sequence value.
-   */
-  public DB2SequenceIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int batchSize) {
-    super(be, ds, seqName, batchSize);
-    this.baseSql = "values nextval for " + seqName;
-    this.unionBaseSql = " union " + baseSql;
-  }
-
-  @Override
-  public String getSql(int batchSize) {
-
-    StringBuilder sb = new StringBuilder();
-    sb.append(baseSql);
-    for (int i = 1; i < batchSize; i++) {
-      sb.append(unionBaseSql);
-    }
-    return sb.toString();
-  }
-}

src/main/java/io/ebean/config/dbplatform/db2/Db2SqlLimiter.java

@@ -22,6 +22,6 @@ public class Db2SqlLimiter implements SqlLimiter {
     }
 
     String sql = request.getDbPlatform().completeSql(sb.toString(), request.getOrmQuery());
-    return new SqlLimitResponse(sql, false);
+    return new SqlLimitResponse(sql);
   }
 }

src/main/java/io/ebean/config/dbplatform/h2/H2DbSequence.java

@@ -0,0 +1,14 @@
+package io.ebean.config.dbplatform.h2;
+
+import io.ebean.BackgroundExecutor;
+import io.ebean.config.dbplatform.SequenceStepIdGenerator;
+
+import javax.sql.DataSource;
+
+class H2DbSequence extends SequenceStepIdGenerator {
+
+  H2DbSequence(BackgroundExecutor be, DataSource ds, String seqName, int stepSize) {
+    super(be, ds, seqName, stepSize, "select " + seqName + ".nextval");
+  }
+
+}

src/main/java/io/ebean/config/dbplatform/h2/H2Platform.java

@@ -24,9 +24,9 @@ public class H2Platform extends DatabasePlatform {
     this.historySupport = new H2HistorySupport();
     this.nativeUuidType = true;
     this.supportsDeleteTableAlias = true;
+    this.inlineSqlUpdateLimit = true;
     this.dbDefaultValue.setNow("now()");
     this.columnAliasPrefix = null;
-
     this.exceptionTranslator =
       new SqlErrorCodes()
         .addAcquireLock("50200","HYT00")
@@ -42,13 +42,9 @@ public class H2Platform extends DatabasePlatform {
     dbTypeMap.put(DbType.UUID, new DbPlatformType("uuid", false));
   }
 
-  /**
-   * Return a H2 specific sequence IdGenerator that supports batch fetching
-   * sequence values.
-   */
   @Override
-  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int stepSize, String seqName) {
-    return new H2SequenceIdGenerator(be, ds, seqName, sequenceBatchSize);
+  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int increment, String seqName) {
+    return new H2DbSequence(be, ds, seqName, increment);
   }
 
   @Override

src/main/java/io/ebean/config/dbplatform/h2/H2SequenceIdGenerator.java

@@ -1,35 +0,0 @@
-package io.ebean.config.dbplatform.h2;
-
-import io.ebean.BackgroundExecutor;
-import io.ebean.config.dbplatform.SequenceBatchIdGenerator;
-
-import javax.sql.DataSource;
-
-/**
- * H2 specific sequence Id Generator.
- */
-public class H2SequenceIdGenerator extends SequenceBatchIdGenerator {
-
-  private final String baseSql;
-  private final String unionBaseSql;
-
-  /**
-   * Construct given a dataSource and sql to return the next sequence value.
-   */
-  public H2SequenceIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int batchSize) {
-    super(be, ds, seqName, batchSize);
-    this.baseSql = "select " + seqName + ".nextval";
-    this.unionBaseSql = " union " + baseSql;
-  }
-
-  @Override
-  public String getSql(int batchSize) {
-
-    StringBuilder sb = new StringBuilder();
-    sb.append(baseSql);
-    for (int i = 1; i < batchSize; i++) {
-      sb.append(unionBaseSql);
-    }
-    return sb.toString();
-  }
-}

src/main/java/io/ebean/config/dbplatform/hana/HanaPlatform.java

@@ -18,7 +18,6 @@ public class HanaPlatform extends DatabasePlatform {
     this.persistBatchOnCascade = PersistBatch.NONE;
     this.supportsResultSetConcurrencyModeUpdatable = false;
     this.columnAliasPrefix = null;
-
     this.historySupport = new HanaHistorySupport();
     this.basicSqlLimiter = new HanaBasicSqlLimiter();
 

src/main/java/io/ebean/config/dbplatform/hana/HanaSqlLimiter.java

@@ -29,7 +29,6 @@ public class HanaSqlLimiter implements SqlLimiter {
     }
 
     String sql = request.getDbPlatform().completeSql(sb.toString(), request.getOrmQuery());
-
-    return new SqlLimitResponse(sql, false);
+    return new SqlLimitResponse(sql);
   }
-}
+}

src/main/java/io/ebean/config/dbplatform/hsqldb/HsqldbPlatform.java

@@ -1,38 +0,0 @@
-package io.ebean.config.dbplatform.hsqldb;
-
-import io.ebean.BackgroundExecutor;
-import io.ebean.annotation.Platform;
-import io.ebean.config.dbplatform.DatabasePlatform;
-import io.ebean.config.dbplatform.DbPlatformType;
-import io.ebean.config.dbplatform.DbType;
-import io.ebean.config.dbplatform.IdType;
-import io.ebean.config.dbplatform.PlatformIdGenerator;
-import io.ebean.config.dbplatform.h2.H2DbEncrypt;
-import io.ebean.config.dbplatform.h2.H2SequenceIdGenerator;
-
-import javax.sql.DataSource;
-
-/**
- * H2 specific platform.
- */
-public class HsqldbPlatform extends DatabasePlatform {
-
-  public HsqldbPlatform() {
-    super();
-    this.platform = Platform.HSQLDB;
-    this.dbEncrypt = new H2DbEncrypt();
-
-    this.dbIdentity.setIdType(IdType.IDENTITY);
-    this.dbIdentity.setSupportsGetGeneratedKeys(true);
-    this.dbIdentity.setSupportsSequence(true);
-    this.dbIdentity.setSupportsIdentity(true);
-
-    dbTypeMap.put(DbType.INTEGER, new DbPlatformType("integer", false));
-  }
-
-  @Override
-  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int stepSize, String seqName) {
-    return new H2SequenceIdGenerator(be, ds, seqName, sequenceBatchSize);
-  }
-
-}

src/main/java/io/ebean/config/dbplatform/hsqldb/package-info.java

@@ -1,4 +0,0 @@
-/**
- * Hsqldb specific support.
- */
-package io.ebean.config.dbplatform.hsqldb;

src/main/java/io/ebean/config/dbplatform/mysql/MySql55Platform.java

@@ -0,0 +1,14 @@
+package io.ebean.config.dbplatform.mysql;
+
+import io.ebean.annotation.Platform;
+import io.ebean.config.dbplatform.DbPlatformType;
+import io.ebean.config.dbplatform.DbType;
+
+public class MySql55Platform extends MySqlPlatform {
+
+  public MySql55Platform() {
+    super();
+    this.platform = Platform.MYSQL55;
+    dbTypeMap.put(DbType.TIMESTAMP, new DbPlatformType("datetime"));
+  }
+}

src/main/java/io/ebean/config/dbplatform/mysql/MySqlPlatform.java

@@ -27,10 +27,11 @@ public class MySqlPlatform extends DatabasePlatform {
     this.platform = Platform.MYSQL;
     this.useExtraTransactionOnIterateSecondaryQueries = true;
     this.selectCountWithAlias = true;
+    this.supportsSavepointId = false;
+    this.inlineSqlUpdateLimit = true;
     this.dbEncrypt = new MySqlDbEncrypt();
     this.historySupport = new MySqlHistorySupport();
     this.columnAliasPrefix = null;
-
     this.dbIdentity.setIdType(IdType.IDENTITY);
     this.dbIdentity.setSupportsGetGeneratedKeys(true);
     this.dbIdentity.setSupportsIdentity(true);
@@ -51,8 +52,8 @@ public class MySqlPlatform extends DatabasePlatform {
     this.openQuote = "`";
     this.closeQuote = "`";
     // use pipe for escaping as it depends if mysql runs in no_backslash_escapes or not.
-    this.likeClauseRaw = "like ? escape ''";
-    this.likeClauseEscaped = "like ? escape '|'";
+    this.likeClauseRaw = "like ? escape''";
+    this.likeClauseEscaped = "like ? escape'|'";
 
     this.forwardOnlyHintOnFindIterate = true;
     this.booleanDbType = Types.BIT;
@@ -64,6 +65,8 @@ public class MySqlPlatform extends DatabasePlatform {
     dbTypeMap.put(DbType.BLOB, new MySqlBlob());
     dbTypeMap.put(DbType.BINARY, new DbPlatformType("binary", 255));
     dbTypeMap.put(DbType.VARBINARY, new DbPlatformType("varbinary", 255));
+    dbTypeMap.put(DbType.JSON, new DbPlatformType("json", false));
+    dbTypeMap.put(DbType.JSONB, new DbPlatformType("json", false));
   }
 
   @Override

src/main/java/io/ebean/config/dbplatform/nuodb/NuoDbHistorySupport.java

@@ -0,0 +1,10 @@
+package io.ebean.config.dbplatform.nuodb;
+
+import io.ebean.config.dbplatform.DbViewHistorySupport;
+
+/**
+ * Runtime support for @History with NuoDB.
+ */
+public class NuoDbHistorySupport extends DbViewHistorySupport {
+
+}

src/main/java/io/ebean/config/dbplatform/nuodb/NuoDbPlatform.java

@@ -0,0 +1,62 @@
+package io.ebean.config.dbplatform.nuodb;
+
+import io.ebean.BackgroundExecutor;
+import io.ebean.Query;
+import io.ebean.annotation.Platform;
+import io.ebean.config.dbplatform.DatabasePlatform;
+import io.ebean.config.dbplatform.DbPlatformType;
+import io.ebean.config.dbplatform.DbType;
+import io.ebean.config.dbplatform.IdType;
+import io.ebean.config.dbplatform.PlatformIdGenerator;
+import io.ebean.config.dbplatform.SqlErrorCodes;
+
+import javax.sql.DataSource;
+
+/**
+ * NuoDb specific platform.
+ */
+public class NuoDbPlatform extends DatabasePlatform {
+
+  public NuoDbPlatform() {
+    super();
+    this.platform = Platform.NUODB;
+    this.idInExpandedForm = true;
+    this.supportsResultSetConcurrencyModeUpdatable = false;
+    this.supportsDeleteTableAlias = true;
+    this.columnAliasPrefix = null;
+    this.likeClauseRaw = "like ?";
+    this.historySupport = new NuoDbHistorySupport();
+    //this.dbEncrypt = ...
+    dbIdentity.setIdType(IdType.IDENTITY);
+    dbIdentity.setSupportsIdentity(true);
+    dbIdentity.setSupportsSequence(true);
+    dbIdentity.setSupportsGetGeneratedKeys(true);
+
+    // No referential integrity exception to map
+    this.exceptionTranslator =
+      new SqlErrorCodes()
+        //.addAcquireLock("")
+        .addDuplicateKey("23000")
+        .addSerializableConflict("40002")
+        .build();
+
+    dbTypeMap.put(DbType.INTEGER, new DbPlatformType("integer", false));
+  }
+
+  @Override
+  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int increment, String seqName) {
+    return new NuoDbSequence(be, ds, seqName, increment);
+  }
+
+  @Override
+  protected String withForUpdate(String sql, Query.ForUpdate forUpdateMode) {
+    switch (forUpdateMode) {
+      case NOWAIT:
+        return sql + " for update nowait";
+      case SKIPLOCKED:
+      default:
+        return sql + " for update";
+    }
+  }
+
+}

src/main/java/io/ebean/config/dbplatform/nuodb/NuoDbSequence.java

@@ -0,0 +1,14 @@
+package io.ebean.config.dbplatform.nuodb;
+
+import io.ebean.BackgroundExecutor;
+import io.ebean.config.dbplatform.SequenceStepIdGenerator;
+
+import javax.sql.DataSource;
+
+class NuoDbSequence extends SequenceStepIdGenerator {
+
+  NuoDbSequence(BackgroundExecutor be, DataSource ds, String seqName, int stepSize) {
+    super(be, ds, seqName, stepSize, "select next value for " + seqName + " from dual");
+  }
+
+}

src/main/java/io/ebean/config/dbplatform/nuodb/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * NuoDB specific support.
+ */
+package io.ebean.config.dbplatform.nuodb;

src/main/java/io/ebean/config/dbplatform/oracle/Oracle11Platform.java

@@ -0,0 +1,16 @@
+package io.ebean.config.dbplatform.oracle;
+
+import io.ebean.annotation.Platform;
+
+/**
+ * Oracle 11 platform using rownum sql limiting.
+ */
+public class Oracle11Platform extends OraclePlatform {
+
+  public Oracle11Platform() {
+    super();
+    this.platform = Platform.ORACLE11;
+    this.columnAliasPrefix = "c";
+    this.sqlLimiter = new OracleRownumSqlLimiter();
+  }
+}

src/main/java/io/ebean/config/dbplatform/oracle/OracleAnsiSqlRowsLimiter.java

@@ -0,0 +1,34 @@
+package io.ebean.config.dbplatform.oracle;
+
+import io.ebean.config.dbplatform.SqlLimitRequest;
+import io.ebean.config.dbplatform.SqlLimitResponse;
+import io.ebean.config.dbplatform.SqlLimiter;
+
+/**
+ * Use ANSI offset rows syntax.
+ */
+class OracleAnsiSqlRowsLimiter implements SqlLimiter {
+
+  @Override
+  public SqlLimitResponse limit(SqlLimitRequest request) {
+
+    String dbSql = request.getDbSql();
+    StringBuilder sb = new StringBuilder(50 + dbSql.length());
+    int firstRow = request.getFirstRow();
+    int maxRows = request.getMaxRows();
+
+    sb.append("select ");
+    if (request.isDistinct()) {
+      sb.append("distinct ");
+    }
+    sb.append(dbSql);
+    if (firstRow > 0) {
+      sb.append(" offset ").append(firstRow).append(" rows");
+    }
+    if (maxRows > 0) {
+      sb.append(" fetch next ").append(maxRows).append(" rows only");
+    }
+    return new SqlLimitResponse(sb.toString());
+  }
+
+}

src/main/java/io/ebean/config/dbplatform/oracle/OracleDbSequence.java

@@ -0,0 +1,14 @@
+package io.ebean.config.dbplatform.oracle;
+
+import io.ebean.BackgroundExecutor;
+import io.ebean.config.dbplatform.SequenceStepIdGenerator;
+
+import javax.sql.DataSource;
+
+class OracleDbSequence extends SequenceStepIdGenerator {
+
+  OracleDbSequence(BackgroundExecutor be, DataSource ds, String seqName, int stepSize) {
+    super(be, ds, seqName, stepSize, "select " + seqName + ".nextval from dual");
+  }
+
+}

src/main/java/io/ebean/config/dbplatform/oracle/OraclePlatform.java

@@ -9,7 +9,6 @@ import io.ebean.config.dbplatform.DbPlatformType;
 import io.ebean.config.dbplatform.DbType;
 import io.ebean.config.dbplatform.IdType;
 import io.ebean.config.dbplatform.PlatformIdGenerator;
-import io.ebean.config.dbplatform.RownumSqlLimiter;
 import io.ebean.config.dbplatform.SqlErrorCodes;
 
 import javax.sql.DataSource;
@@ -23,14 +22,15 @@ public class OraclePlatform extends DatabasePlatform {
   public OraclePlatform() {
     super();
     this.platform = Platform.ORACLE;
+    this.columnAliasPrefix = null;
     this.supportsDeleteTableAlias = true;
     this.maxTableNameLength = 30;
     this.maxConstraintNameLength = 30;
     this.dbEncrypt = new OracleDbEncrypt();
-    this.sqlLimiter = new RownumSqlLimiter();
+    this.sqlLimiter = new OracleAnsiSqlRowsLimiter();
     this.basicSqlLimiter = new BasicSqlAnsiLimiter();
     this.historySupport = new OracleDbHistorySupport();
-
+    this.truncateTable = "truncate table %s cascade";
     dbIdentity.setIdType(IdType.SEQUENCE);
     dbIdentity.setSupportsSequence(true);
     dbIdentity.setSupportsIdentity(true);
@@ -48,6 +48,7 @@ public class OraclePlatform extends DatabasePlatform {
         //.addAcquireLock("")
         .addDuplicateKey("1")
         .addDataIntegrity("2291")
+        .addSerializableConflict("72000")
         .build();
 
     this.openQuote = "\"";
@@ -75,8 +76,8 @@ public class OraclePlatform extends DatabasePlatform {
   }
 
   @Override
-  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int stepSize, String seqName) {
-    return new OracleSequenceIdGenerator(be, ds, seqName, sequenceBatchSize);
+  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int increment, String seqName) {
+    return new OracleDbSequence(be, ds, seqName, increment);
   }
 
   @Override

src/main/java/io/ebean/config/dbplatform/oracle/OracleRownumSqlLimiter.java

@@ -0,0 +1,54 @@
+package io.ebean.config.dbplatform.oracle;
+
+import io.ebean.config.dbplatform.SqlLimitRequest;
+import io.ebean.config.dbplatform.SqlLimitResponse;
+import io.ebean.config.dbplatform.SqlLimiter;
+
+/**
+ * Add ROWNUM column etc around SQL query to limit results.
+ */
+class OracleRownumSqlLimiter implements SqlLimiter {
+
+  @Override
+  public SqlLimitResponse limit(SqlLimitRequest request) {
+
+    // select *
+    // from ( select /*+ FIRST_ROWS(n) */ a.*, ROWNUM rnum
+    // from ( your_query_goes_here,
+    // with order by ) a
+    // where ROWNUM <=
+    // :MAX_ROW_TO_FETCH )
+    // where rnum >= :MIN_ROW_TO_FETCH;
+
+    String dbSql = request.getDbSql();
+
+    StringBuilder sb = new StringBuilder(60 + dbSql.length());
+    int firstRow = request.getFirstRow();
+    int lastRow = request.getMaxRows();
+    if (lastRow > 0) {
+      lastRow += firstRow;
+    }
+
+    sb.append("select * from (select ");
+    if (request.getMaxRows() > 0) {
+      sb.append("/*+ FIRST_ROWS(").append(request.getMaxRows()).append(") */ ");
+    }
+
+    sb.append("a.*, rownum rn_ from (select ");
+    if (request.isDistinct()) {
+      sb.append("distinct ");
+    }
+    sb.append(dbSql).append(") a ");
+    if (lastRow > 0) {
+      sb.append(" where rownum <= ").append(lastRow);
+    }
+    sb.append(") ");
+    if (firstRow > 0) {
+      sb.append(" where rn_ > ").append(firstRow);
+    }
+
+    String sql = request.getDbPlatform().completeSql(sb.toString(), request.getOrmQuery());
+    return new SqlLimitResponse(sql);
+  }
+
+}

src/main/java/io/ebean/config/dbplatform/oracle/OracleSequenceIdGenerator.java

@@ -1,27 +0,0 @@
-package io.ebean.config.dbplatform.oracle;
-
-import io.ebean.BackgroundExecutor;
-import io.ebean.config.dbplatform.SequenceBatchIdGenerator;
-
-import javax.sql.DataSource;
-
-/**
- * Oracle specific sequence Id Generator.
- */
-public class OracleSequenceIdGenerator extends SequenceBatchIdGenerator {
-
-  private final String baseSql;
-
-  /**
-   * Construct given a dataSource and sql to return the next sequence value.
-   */
-  public OracleSequenceIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int batchSize) {
-    super(be, ds, seqName, batchSize);
-    this.baseSql = "select " + seqName + ".nextval, a from (select level as a FROM dual CONNECT BY level <= ";
-  }
-
-  @Override
-  public String getSql(int batchSize) {
-    return baseSql + batchSize + ")";
-  }
-}

src/main/java/io/ebean/config/dbplatform/postgres/Postgres8Platform.java

@@ -1,22 +0,0 @@
-package io.ebean.config.dbplatform.postgres;
-
-import io.ebean.config.dbplatform.IdType;
-
-/**
- * Postgres v8.3 specific platform.
- * <p>
- * No support for getGeneratedKeys.
- * </p>
- */
-public class Postgres8Platform extends PostgresPlatform {
-
-  public Postgres8Platform() {
-    super();
-    this.dbIdentity.setSupportsGetGeneratedKeys(false);
-    this.dbIdentity.setIdType(IdType.SEQUENCE);
-    this.dbIdentity.setSupportsSequence(true);
-    this.dbIdentity.setSupportsIdentity(true);
-    this.columnAliasPrefix = "as c";
-  }
-
-}

src/main/java/io/ebean/config/dbplatform/postgres/Postgres9Platform.java

@@ -0,0 +1,14 @@
+package io.ebean.config.dbplatform.postgres;
+
+import io.ebean.annotation.Platform;
+
+/**
+ * Postgres9 platform - uses serial type for identity columns.
+ */
+public class Postgres9Platform extends PostgresPlatform {
+
+  public Postgres9Platform() {
+    super();
+    this.platform = Platform.POSTGRES9;
+  }
+}

src/main/java/io/ebean/config/dbplatform/postgres/PostgresDbSequence.java

@@ -0,0 +1,14 @@
+package io.ebean.config.dbplatform.postgres;
+
+import io.ebean.BackgroundExecutor;
+import io.ebean.config.dbplatform.SequenceStepIdGenerator;
+
+import javax.sql.DataSource;
+
+class PostgresDbSequence extends SequenceStepIdGenerator {
+
+  PostgresDbSequence(BackgroundExecutor be, DataSource ds, String seqName, int stepSize) {
+    super(be, ds, seqName, stepSize, "select nextval('" + seqName + "')");
+  }
+
+}

src/main/java/io/ebean/config/dbplatform/postgres/PostgresPlatform.java

@@ -19,10 +19,9 @@ import java.sql.SQLException;
 import java.sql.Types;
 
 /**
- * Postgres v9 specific platform.
+ * Postgres 10+ platform.
  * <p>
- * Uses serial types and getGeneratedKeys.
- * </p>
+ * Defaults to use "generated by default as identity".
  */
 public class PostgresPlatform extends DatabasePlatform {
 
@@ -36,7 +35,7 @@ public class PostgresPlatform extends DatabasePlatform {
     this.clobDbType = Types.VARCHAR;
     this.nativeUuidType = true;
     this.columnAliasPrefix = null;
-
+    this.truncateTable = "truncate table %s cascade";
     this.dbEncrypt = new PostgresDbEncrypt();
     this.historySupport = new PostgresHistorySupport();
 
@@ -44,6 +43,7 @@ public class PostgresPlatform extends DatabasePlatform {
     this.dbIdentity.setIdType(IdType.IDENTITY);
     this.dbIdentity.setSupportsGetGeneratedKeys(true);
     this.dbIdentity.setSupportsSequence(true);
+    this.dbIdentity.setSupportsIdentity(true);
 
     this.dbDefaultValue.setNow("current_timestamp");
 
@@ -51,7 +51,8 @@ public class PostgresPlatform extends DatabasePlatform {
       new SqlErrorCodes()
         .addAcquireLock("55P03")
         .addDuplicateKey("23505")
-        .addDataIntegrity("23000","23502","23503","23514")
+        .addDataIntegrity("23000", "23502", "23503", "23514")
+        .addSerializableConflict("40001")
         .build();
 
     this.openQuote = "\"";
@@ -62,6 +63,7 @@ public class PostgresPlatform extends DatabasePlatform {
 
     dbTypeMap.put(DbType.UUID, new DbPlatformType("uuid", false));
     dbTypeMap.put(DbType.INET, new DbPlatformType("inet", false));
+    dbTypeMap.put(DbType.CIDR, new DbPlatformType("cidr", 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));
@@ -107,9 +109,8 @@ public class PostgresPlatform extends DatabasePlatform {
    * Create a Postgres specific sequence IdGenerator.
    */
   @Override
-  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int stepSize, String seqName) {
-
-    return new PostgresSequenceIdGenerator(be, ds, seqName, sequenceBatchSize);
+  public PlatformIdGenerator createSequenceIdGenerator(BackgroundExecutor be, DataSource ds, int increment, String seqName) {
+    return new PostgresDbSequence(be, ds, seqName, increment);
   }
 
   @Override
@@ -126,7 +127,6 @@ public class PostgresPlatform extends DatabasePlatform {
 
   @Override
   public boolean tablePartitionsExist(Connection connection, String table) throws SQLException {
-
     try (PreparedStatement statement = connection.prepareStatement("select count(*) from pg_inherits i WHERE  i.inhparent = ?::regclass")) {
       statement.setString(1, table);
       try (ResultSet resultSet = statement.executeQuery()) {
@@ -137,18 +137,15 @@ public class PostgresPlatform extends DatabasePlatform {
 
   /**
    * Return SQL using built in partition helper functions to create some initial partitions.
-   *
+   * <p>
    * Only use this if extra-ddl doesn't have some initial partitions defined (which it should).
    */
   @Override
   public String tablePartitionInit(String tableName, PartitionMode mode, String property, String pkey) {
-    if (property == null) {
-      property = "";
-    }
-    if (pkey == null) {
-      pkey = "";
-    }
-    return "select partition('" + mode.name().toLowerCase() + "','" + tableName + "','" + pkey + "','" + property + "',1);";
+    // default partition required pg11 but this is only used for testing but bumped test docker container to pg11 by default
+    return
+      "create table " + tableName + "_default" + " partition of " + tableName + " default;\n" +
+        "select partition('" + mode.name().toLowerCase() + "','" + tableName + "',1);";
   }
 
 }

src/main/java/io/ebean/config/dbplatform/postgres/PostgresSequenceIdGenerator.java

@@ -1,27 +0,0 @@
-package io.ebean.config.dbplatform.postgres;
-
-import io.ebean.BackgroundExecutor;
-import io.ebean.config.dbplatform.SequenceBatchIdGenerator;
-
-import javax.sql.DataSource;
-
-/**
- * Postgres specific sequence Id Generator.
- */
-public class PostgresSequenceIdGenerator extends SequenceBatchIdGenerator {
-
-  private final String baseSql;
-
-  /**
-   * Construct given a dataSource and sql to return the next sequence value.
-   */
-  public PostgresSequenceIdGenerator(BackgroundExecutor be, DataSource ds, String seqName, int batchSize) {
-    super(be, ds, seqName, batchSize);
-    this.baseSql = "select nextval('" + seqName + "'), s.generate_series from (select generate_series from generate_series(1,";
-  }
-
-  @Override
-  public String getSql(int batchSize) {
-    return baseSql + batchSize + ") ) as s";
-  }
-}

src/main/java/io/ebean/config/dbplatform/sqlanywhere/SqlAnywhereLimiter.java

@@ -35,8 +35,7 @@ public class SqlAnywhereLimiter implements SqlLimiter {
     sb.append(dbSql);
 
     String sql = request.getDbPlatform().completeSql(sb.toString(), request.getOrmQuery());
-
-    return new SqlLimitResponse(sql, false);
+    return new SqlLimitResponse(sql);
   }
 
 }