[maven-release-plugin] prepare release avaje-ebeanorm-7.3.1

SQLite Ddl : autoincrement attribute

.gitignore

@@ -1,5 +1,6 @@
 *.autofetch
-*.sql
+*create-all.sql
+*drop-all.sql
 *.orig
 .classpath
 .project

.travis.yml

@@ -0,0 +1,32 @@
+sudo: required
+language: java
+jdk:
+  - oraclejdk8
+
+git:
+  depth: 3
+
+addons:
+  postgresql: "9.4"
+
+services:
+  - postgresql
+
+before_script:
+  - ./.travis/setup_database
+
+env:
+  - EBEAN_DB=h2
+  - EBEAN_DB=pg
+
+install: true
+
+script:
+  - mvn clean test
+
+after_failure:
+  - ./.travis/print_surefire_reports
+
+cache:
+  directories:
+  - $HOME/.m2

.travis/print_surefire_reports

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+echo "\n=== SUREFIRE REPORTS ===\n"
+
+for file in target/surefire-reports/*.txt
+do
+    echo ${file}
+    cat ${file}
+    echo
+done

.travis/setup_database

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+echo "\n=== SETUP DATABASE ===\n"
+
+#set -e
+#set -x
+
+# Setup postgres' users and databases
+sudo -u postgres psql -c "CREATE USER unit WITH PASSWORD 'unit';"
+sudo -u postgres psql -c 'CREATE DATABASE unit WITH OWNER unit;'
+sudo -u postgres psql unit -c 'CREATE EXTENSION hstore;'
+sudo -u postgres psql unit -c 'CREATE EXTENSION pgcrypto;'
+#sudo -u postgres psql test2 -c 'CREATE EXTENSION postgis;'
+

pom.xml

@@ -9,7 +9,7 @@
 
   <groupId>org.avaje.ebeanorm</groupId>
   <artifactId>avaje-ebeanorm</artifactId>
-  <version>6.15.2</version>
+  <version>7.3.1</version>
   <packaging>jar</packaging>
 
   <name>avaje-ebeanorm</name>
@@ -55,6 +55,24 @@
       <version>1.0</version>
     </dependency>
 
+    <dependency>
+      <groupId>org.avaje</groupId>
+      <artifactId>avaje-datasource-api</artifactId>
+      <version>1.1</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.avaje</groupId>
+      <artifactId>avaje-datasource</artifactId>
+      <version>1.1.1</version>
+    </dependency>
+
+    <!--<dependency>-->
+      <!--<groupId>org.avaje</groupId>-->
+      <!--<artifactId>avaje-datasource-alert</artifactId>-->
+      <!--<version>1.1.1</version>-->
+    <!--</dependency>-->
+
     <dependency>
       <groupId>org.slf4j</groupId>
       <artifactId>slf4j-api</artifactId>
@@ -73,7 +91,7 @@
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-databind</artifactId>
-      <version>2.5.3</version>
+      <version>2.6.5</version>
       <scope>provided</scope>
     </dependency>
 
@@ -81,7 +99,7 @@
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-core</artifactId>
-      <version>2.5.3</version>
+      <version>2.6.5</version>
     </dependency>
 
     <dependency>
@@ -138,8 +156,8 @@
     <dependency>
       <groupId>com.squareup.okhttp</groupId>
       <artifactId>okhttp</artifactId>
-      <version>2.1.0</version>
-      <scope>test</scope>
+      <version>2.4.0</version>
+      <scope>provided</scope>
     </dependency>
 
     <dependency>
@@ -152,7 +170,7 @@
     <dependency>
       <groupId>org.avaje.ebeanorm</groupId>
       <artifactId>avaje-ebeanorm-agent</artifactId>
-      <version>4.8.1</version>
+      <version>4.9.2</version>
       <scope>test</scope>
     </dependency>
 
@@ -168,7 +186,7 @@
     <dependency>
       <groupId>org.xerial</groupId>
       <artifactId>sqlite-jdbc</artifactId>
-      <version>3.7.2</version>
+      <version>3.8.11.2</version>
       <scope>test</scope>
     </dependency>
 
@@ -219,7 +237,7 @@
       <plugin>
         <groupId>org.avaje.ebeanorm</groupId>
         <artifactId>avaje-ebeanorm-mavenenhancer</artifactId>
-        <version>4.8.1</version>
+        <version>4.9.2</version>
         <executions>
           <!--   Not going to enhance Model bean -->
           <execution>

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

@@ -11,4 +11,14 @@ public interface AutoTune {
    */
   void collectProfiling();
 
+  /**
+   * Output the profiling.
+   * <p>
+   * When profiling updates are applied to tuning at runtime this reports all tuning and profiling combined.
+   * When profiling is not applied at runtime then this reports the diff report with new and diff entries relative
+   * to the existing tuning.
+   * </p>
+   */
+  void reportProfiling();
+
 }

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

@@ -71,7 +71,7 @@ class DRawSqlParser {
 
     preFrom = trimSelectKeyword(preFrom);
 
-    return new Sql(sql.hashCode(), preFrom, preWhere, whereExprAnd, preHaving, havingExprAnd, orderByPrefix, orderBySql, (distinctPos > -1));
+    return new Sql(sql, preFrom, preWhere, whereExprAnd, preHaving, havingExprAnd, orderByPrefix, orderBySql, (distinctPos > -1));
   }
 
   /**

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

@@ -0,0 +1,94 @@
+package com.avaje.ebean;
+
+/**
+ * Bean holding the details to update the document store.
+ */
+public final class DocStoreQueueEntry {
+
+  /**
+   * Action to either update or delete a document from the index.
+   */
+  public enum Action {
+
+    /**
+     * Action is to update a document in the doc store.
+     */
+    INDEX(1),
+
+    /**
+     * Action is to delete a document from the doc store..
+     */
+    DELETE(2),
+
+    /**
+     * An update is required based on a change to a nested/embedded object at a given path.
+     */
+    NESTED(3);
+
+    int value;
+
+    Action(int value) {
+      this.value = value;
+    }
+
+    /**
+     * Return the value associated with this action type.
+     */
+    public int getValue() {
+      return value;
+    }
+  }
+
+  final Action type;
+
+  final String queueId;
+
+  final String path;
+
+  final Object beanId;
+
+  /**
+   * Construct for an INDEX or DELETE action.
+   */
+  public DocStoreQueueEntry(Action type, String queueId, Object beanId) {
+    this(type, queueId, null, beanId);
+  }
+
+  /**
+   * Construct for an NESTED/embedded path invalidation action.
+   */
+  public DocStoreQueueEntry(Action type, String queueId, String path, Object beanId) {
+    this.type = type;
+    this.queueId = queueId;
+    this.path = path;
+    this.beanId = beanId;
+  }
+
+  /**
+   * Return the event type.
+   */
+  public Action getType() {
+    return type;
+  }
+
+  /**
+   * Return the associate queueId.
+   */
+  public String getQueueId() {
+    return queueId;
+  }
+
+  /**
+   * Return the path if this is a nested update.
+   */
+  public String getPath() {
+    return path;
+  }
+
+  /**
+   * Return the bean id (which matches the document id).
+   */
+  public Object getBeanId() {
+    return beanId;
+  }
+}

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

@@ -0,0 +1,270 @@
+package com.avaje.ebean;
+
+import com.avaje.ebeanservice.docstore.api.DocQueryRequest;
+import org.jetbrains.annotations.Nullable;
+
+import java.io.IOException;
+import java.util.List;
+
+/**
+ * Document storage operations.
+ */
+public interface DocumentStore {
+
+  /**
+   * Update the associated document store using the result of the query.
+   * <p>
+   * This will execute the query against the database creating a document for each
+   * bean graph and sending this to the document store.
+   * </p>
+   * <p>
+   * Note that the select and fetch paths of the query is set for you to match the
+   * document structure needed based on <code>@DocStore</code> and <code>@DocStoreEmbedded</code>
+   * so what this query requires is the predicates only.
+   * </p>
+   * <p>
+   * This query will be executed using findEach so it is safe to use a query
+   * that will fetch a lot of beans. The default bulkBatchSize is used.
+   * </p>
+   *
+   * @param query The query that selects object to send to the document store.
+   */
+  <T> void indexByQuery(Query<T> query);
+
+  /**
+   * Update the associated document store index using the result of the query additionally specifying a
+   * bulkBatchSize to use for sending the messages to ElasticSearch.
+   *
+   * @param query         The query that selects object to send to the document store.
+   * @param bulkBatchSize The batch size to use when bulk sending to the document store.
+   */
+  <T> void indexByQuery(Query<T> query, int bulkBatchSize);
+
+  /**
+   * Update the document store for all beans of this type.
+   * <p>
+   * This is the same as indexByQuery where the query has no predicates and so fetches all rows.
+   * </p>
+   */
+  void indexAll(Class<?> beanType);
+
+  /**
+   * Return the bean by fetching it's content from the document store.
+   * If the document is not found null is returned.
+   * <p>
+   * Typically this is called indirectly by findUnique() on the query.
+   * </p>
+   * <pre>{@code
+   *
+   * Customer customer =
+   *   server.find(Customer.class)
+   *     .setUseDocStore(true)
+   *     .setId(42)
+   *     .findUnique();
+   *
+   * }</pre>
+   */
+  @Nullable
+  <T> T find(DocQueryRequest<T> request);
+
+  /**
+   * Execute the find list query. This request is prepared to execute secondary queries.
+   * <p>
+   * Typically this is called indirectly by findList() on the query that has setUseDocStore(true).
+   * </p>
+   * <pre>{@code
+   *
+   * List<Customer> newCustomers =
+   *  server.find(Customer.class)
+   *    .setUseDocStore(true)
+   *    .where().eq("status, Customer.Status.NEW)
+   *    .findList();
+   *
+   * }</pre>
+   */
+  <T> List<T> findList(DocQueryRequest<T> request);
+
+  /**
+   * Execute the query against the document store returning the paged list.
+   * <p>
+   * The query should have <code>firstRow</code> or <code>maxRows</code> set prior to calling this method.
+   * </p>
+   * <p>
+   * Typically this is called indirectly by findPagedList() on the query that has setUseDocStore(true).
+   * </p>
+   *
+   * <pre>{@code
+   *
+   * PagedList<Customer> newCustomers =
+   *  server.find(Customer.class)
+   *    .setUseDocStore(true)
+   *    .where().eq("status, Customer.Status.NEW)
+   *    .setMaxRows(50)
+   *    .findPagedList();
+   *
+   * }</pre>
+   *
+   */
+  <T> PagedList<T> findPagedList(DocQueryRequest<T> request);
+
+  /**
+   * Execute the query against the document store with the expectation of a large set of results
+   * that are processed in a scrolling resultSet fashion.
+   * <p>
+   * For example, with the ElasticSearch doc store this uses SCROLL.
+   * </p>
+   * <p>
+   * Typically this is called indirectly by findEach() on the query that has setUseDocStore(true).
+   * </p>
+   *
+   * <pre>{@code
+   *
+   *  server.find(Order.class)
+   *    .setUseDocStore(true)
+   *    .where()... // perhaps add predicates
+   *    .findEach(new QueryEachConsumer<Order>() {
+   *      @Override
+   *      public void accept(Order bean) {
+   *        // process the bean
+   *      }
+   *    });
+   *
+   * }</pre>
+   */
+  <T> void findEach(DocQueryRequest<T> query, QueryEachConsumer<T> consumer);
+
+  /**
+   * Execute the query against the document store with the expectation of a large set of results
+   * that are processed in a scrolling resultSet fashion.
+   * <p>
+   * Unlike findEach() this provides the opportunity to stop iterating through the large query.
+   * </p>
+   * <p>
+   * For example, with the ElasticSearch doc store this uses SCROLL.
+   * </p>
+   * <p>
+   * Typically this is called indirectly by findEachWhile() on the query that has setUseDocStore(true).
+   * </p>
+   *
+   *
+   * <pre>{@code
+   *
+   *  server.find(Order.class)
+   *    .setUseDocStore(true)
+   *    .where()... // perhaps add predicates
+   *    .findEachWhile(new QueryEachWhileConsumer<Order>() {
+   *      @Override
+   *      public void accept(Order bean) {
+   *        // process the bean
+   *
+   *        // return true to continue, false to stop
+   *        // boolean shouldContinue = ...
+   *        return shouldContinue;
+   *      }
+   *    });
+   *
+   * }</pre>
+   */
+  <T> void findEachWhile(DocQueryRequest<T> query, QueryEachWhileConsumer<T> consumer);
+
+  /**
+   * Process the queue entries sending updates to the document store or queuing them for later processing.
+   */
+  long process(List<DocStoreQueueEntry> queueEntries) throws IOException;
+
+  /**
+   * Drop the index from the document store (similar to DDL drop table).
+   *
+   * <pre>{@code
+   *
+   *   DocumentStore documentStore = server.docStore();
+   *
+   *   documentStore.dropIndex("product_copy");
+   *
+   * }</pre>
+   *
+   */
+  void dropIndex(String indexName);
+
+  /**
+   * Create an index given a mapping file as a resource in the classPath (similar to DDL create table).
+   *
+   * <pre>{@code
+   *
+   *   DocumentStore documentStore = server.docStore();
+   *
+   *   // uses product_copy.mapping.json resource
+   *   // ... to define mappings for the index
+   *
+   *   documentStore.createIndex("product_copy", null);
+   *
+   * }</pre>
+   *
+   * @param indexName       the name of the new index
+   * @param alias           the alias of the index
+   */
+  void createIndex(String indexName, String alias);
+
+  /**
+   * Copy the index to a new index.
+   * <p>
+   * This copy process does not use the database but instead will copy from the source index to a destination index.
+   * </p>
+   *
+   * <pre>{@code
+   *
+   *  long copyCount = documentStore.copyIndex(Product.class, "product_copy");
+   *
+   * }</pre>
+   *
+   * @param beanType The bean type of the source index
+   * @param newIndex The name of the index to copy to
+   * @return the number of documents copied to the new index
+   */
+  long copyIndex(Class<?> beanType, String newIndex);
+
+  /**
+   * Copy entries from an index to a new index but limiting to documents that have been
+   * modified since the sinceEpochMillis time.
+   * <p>
+   * To support this the document needs to have a <code>@WhenModified</code> property.
+   * </p>
+   *
+   * <pre>{@code
+   *
+   *  long copyCount = documentStore.copyIndex(Product.class, "product_copy", sinceMillis);
+   *
+   * }</pre>
+   *
+   * @param beanType The bean type of the source index
+   * @param newIndex The name of the index to copy to
+   * @return the number of documents copied to the new index
+   */
+  long copyIndex(Class<?> beanType, String newIndex, long sinceEpochMillis);
+
+  /**
+   * Copy from a source index to a new index taking only the documents
+   * matching the given query.
+   *
+   * <pre>{@code
+   *
+   *  // predicates to select the source documents to copy
+   *  Query<Product> query = server.find(Product.class)
+   *    .where()
+   *      .ge("whenModified", new Timestamp(since))
+   *      .ge("name", "A")
+   *      .lt("name", "D")
+   *      .query();
+   *
+   *  // copy from the source index to "product_copy" index
+   *  long copyCount = documentStore.copyIndex(query, "product_copy", 1000);
+   *
+   * }</pre>
+   *
+   * @param query         The query to select the source documents to copy
+   * @param newIndex      The target index to copy the documents to
+   * @param bulkBatchSize The ElasticSearch bulk batch size, if 0 uses the default.
+   * @return The number of documents copied to the new index.
+   */
+  long copyIndex(Query<?> query, String newIndex, int bulkBatchSize);
+}

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

@@ -1886,11 +1886,16 @@ public interface EbeanServer {
    *
    * }</pre>
    *
-   * @see com.avaje.ebean.text.PathProperties
-   * @see Query#apply(com.avaje.ebean.text.PathProperties)
+   * @see FetchPath
+   * @see Query#apply(FetchPath)
    */
   JsonContext json();
 
+  /**
+   * Return the Document store.
+   */
+  DocumentStore docStore();
+
   /**
    * Publish a single bean given its type and id returning the resulting live bean.
    * <p>

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

@@ -1,10 +1,8 @@
 package com.avaje.ebean;
 
-import java.io.Serializable;
-
 /**
  * An expression that is part of a WHERE or HAVING clause.
  */
-public interface Expression extends Serializable {
+public interface Expression {
 
 }

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

@@ -1,5 +1,11 @@
 package com.avaje.ebean;
 
+import com.avaje.ebean.search.Match;
+import com.avaje.ebean.search.MultiMatch;
+import com.avaje.ebean.search.TextCommonTerms;
+import com.avaje.ebean.search.TextQueryString;
+import com.avaje.ebean.search.TextSimple;
+
 import java.util.Collection;
 import java.util.List;
 import java.util.Map;
@@ -285,6 +291,31 @@ public interface ExpressionFactory {
    */
   Expression raw(String raw);
 
+  /**
+   * Create a Text Match expression (currently doc store/Elastic only).
+   */
+  Expression textMatch(String propertyName, String search, Match options);
+
+  /**
+   * Create a Text Multi match expression (currently doc store/Elastic only).
+   */
+  Expression textMultiMatch(String query, MultiMatch options);
+
+  /**
+   * Create a text simple query expression (currently doc store/Elastic only).
+   */
+  Expression textSimple(String search, TextSimple options);
+
+  /**
+   * Create a text query string expression (currently doc store/Elastic only).
+   */
+  Expression textQueryString(String search, TextQueryString options);
+
+  /**
+   * Create a text common terms expression (currently doc store/Elastic only).
+   */
+  Expression textCommonTerms(String search, TextCommonTerms options);
+
   /**
    * And - join two expressions with a logical and.
    */
@@ -319,4 +350,13 @@ public interface ExpressionFactory {
    * Return a list of expressions that will be joined by OR's.
    */
   <T> Junction<T> disjunction(Query<T> query, ExpressionList<T> parent);
+
+  /**
+   * Return a Text query junction for MUST, SHOULD or MUST NOT.
+   * <p>
+   * This is doc store Elastic only.
+   * </p>
+   */
+  <T> Junction<T> junction(Junction.Type type, Query<T> query, ExpressionList<T> parent);
+
 }

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

@@ -1,10 +1,13 @@
 package com.avaje.ebean;
 
-import com.avaje.ebean.text.PathProperties;
+import com.avaje.ebean.search.Match;
+import com.avaje.ebean.search.MultiMatch;
+import com.avaje.ebean.search.TextCommonTerms;
+import com.avaje.ebean.search.TextQueryString;
+import com.avaje.ebean.search.TextSimple;
 import org.jetbrains.annotations.Nullable;
 
 import javax.persistence.NonUniqueResultException;
-import java.io.Serializable;
 import java.sql.Timestamp;
 import java.util.Collection;
 import java.util.List;
@@ -31,7 +34,7 @@ import java.util.Set;
  * 
  * @see Query#where()
  */
-public interface ExpressionList<T> extends Serializable {
+public interface ExpressionList<T> {
 
   /**
    * Return the query that owns this expression list.
@@ -95,7 +98,7 @@ public interface ExpressionList<T> extends Serializable {
   /**
    * Apply the path properties to the query replacing the select and fetch clauses.
    */
-  Query<T> apply(PathProperties pathProperties);
+  Query<T> apply(FetchPath fetchPath);
 
   /**
    * Perform an 'As of' query using history tables to return the object graph
@@ -381,6 +384,32 @@ public interface ExpressionList<T> extends Serializable {
    */
   Query<T> setUseQueryCache(boolean useCache);
 
+  /**
+   * Set to true if this query should execute against the doc store.
+   * <p>
+   * When setting this you may also consider disabling lazy loading.
+   * </p>
+   */
+  Query<T> setUseDocStore(boolean useDocsStore);
+
+  /**
+   * Set true if you want to disable lazy loading.
+   * <p>
+   * That is, once the object graph is returned further lazy loading is disabled.
+   * </p>
+   */
+  Query<T> setDisableLazyLoading(boolean disableLazyLoading);
+
+  /**
+   * Disable read auditing for this query.
+   * <p>
+   * This is intended to be used when the query is not a user initiated query and instead
+   * part of the internal processing in an application to load a cache or document store etc.
+   * In these cases we don't want the query to be part of read auditing.
+   * </p>
+   */
+  Query<T> setDisableReadAuditing();
+
   /**
    * Add expressions to the having clause.
    * <p>
@@ -803,6 +832,47 @@ public interface ExpressionList<T> extends Serializable {
    */
   ExpressionList<T> raw(String raw);
 
+  /**
+   * Add a match expression.
+   *
+   * @param propertyName The property name for the match
+   * @param search The search value
+   */
+  ExpressionList<T> match(String propertyName, String search);
+
+  /**
+   * Add a match expression with options.
+   *
+   * @param propertyName The property name for the match
+   * @param search The search value
+   */
+  ExpressionList<T> match(String propertyName, String search, Match options);
+
+  /**
+   * Add a multi-match expression.
+   */
+  ExpressionList<T>  multiMatch(String search, String... properties);
+
+  /**
+   * Add a multi-match expression using options.
+   */
+  ExpressionList<T> multiMatch(String search, MultiMatch options);
+
+  /**
+   * Add a simple query string expression.
+   */
+  ExpressionList<T> textSimple(String search, TextSimple options);
+
+  /**
+   * Add a query string expression.
+   */
+  ExpressionList<T> textQueryString(String search, TextQueryString options);
+
+  /**
+   * Add common terms expression.
+   */
+  ExpressionList<T> textCommonTerms(String search, TextCommonTerms options);
+
   /**
    * And - join two expressions with a logical and.
    */
@@ -819,20 +889,168 @@ public interface ExpressionList<T> extends Serializable {
   ExpressionList<T> not(Expression exp);
 
   /**
-   * Return a list of expressions that will be joined by AND's.
+   * Start a list of expressions that will be joined by AND's
+   * returning the expression list the expressions are added to.
+   * <p>
+   * This is exactly the same as conjunction();
+   * </p>
+   * <p>
+   * Use endJunction() to end the AND junction.
+   * </p>
+   * <p>
+   * Note that a where() clause defaults to an AND junction so
+   * typically you only explicitly need to use the and() junction
+   * when it is nested inside an or() or not() junction.
+   * </p>
+   *
+   * <pre>{@code
+   *
+   *  // Example: Nested and()
+   *
+   *  Ebean.find(Customer.class)
+   *    .where()
+   *    .or()
+   *      .and() // nested and
+   *        .startsWith("name", "r")
+   *        .eq("anniversary", onAfter)
+   *        .endJunction() // end AND junction
+   *      .and()
+   *        .eq("status", Customer.Status.ACTIVE)
+   *        .gt("id", 0)
+   *        .endJunction() // end AND junction
+   *      .orderBy().asc("name")
+   *      .findList();
+   * }</pre>
+   */
+  Junction<T> and();
+
+  /**
+   * Return a list of expressions that will be joined by OR's.
+   * This is exactly the same as disjunction();
+   *
+   * <p>
+   *   Use endJunction() to end the OR junction.
+   * </p>
+   *
+   * <pre>{@code
+   *
+   *  // Example: Use or() to join
+   *  // two nested and() expressions
+   *
+   *  Ebean.find(Customer.class)
+   *    .where()
+   *    .or()
+   *      .and()
+   *        .startsWith("name", "r")
+   *        .eq("anniversary", onAfter)
+   *        .endJunction() // end AND junction
+   *      .and()
+   *        .eq("status", Customer.Status.ACTIVE)
+   *        .gt("id", 0)
+   *        .endJunction() // end AND junction
+   *      .orderBy().asc("name")
+   *      .findList();
+   *
+   * }</pre>
+   */
+  Junction<T> or();
+
+  /**
+   * Return a list of expressions that will be wrapped by NOT.
+   * <p>
+   *   Use endJunction() to end expressions being added to the
+   *   NOT expression list.
+   * </p>
+   *
+   * <pre>@{code
+   *
+   *    .where()
+   *      .not()
+   *        .gt("id", 1)
+   *        .eq("anniversary", onAfter)
+   *        .endJunction() // end the not expressions
+   *
+   * }</pre>
+   *
+   * <pre>@{code
+   *
+   * // Example: nested not()
+   *
+   * Ebean.find(Customer.class)
+   *   .where()
+   *     .eq("status", Customer.Status.ACTIVE)
+   *     .not()
+   *       .gt("id", 1)
+   *       .eq("anniversary", onAfter)
+   *       .endJunction() // end the not expressions
+   *     .orderBy()
+   *       .asc("name")
+   *     .findList();
+   *
+   * }</pre>
+   */
+  Junction<T> not();
+
+  /**
+   * Start (and return) a list of expressions that will be joined by AND's.
+   * <p>
+   * This is the same as and().
+   * </p>
    */
   Junction<T> conjunction();
 
   /**
-   * Return a list of expressions that will be joined by OR's.
+   * Start (and return) a list of expressions that will be joined by OR's.
+   * <p>
+   * This is the same as or().
+   * </p>
    */
   Junction<T> disjunction();
 
   /**
-   * End a Conjunction or Disjunction returning the parent expression list.
+   * Start a list of expressions that will be joined by MUST.
    * <p>
-   * Alternatively you can always use where() to return the top level expression
-   * list.
+   * This automatically makes the query a useDocStore(true) query that
+   * will execute against the document store (ElasticSearch etc).
+   * </p>
+   * <p>
+   * This is logically similar to and().
+   * </p>
+   */
+  Junction<T> must();
+
+  /**
+   * Start a list of expressions that will be joined by SHOULD.
+   * <p>
+   * This automatically makes the query a useDocStore(true) query that
+   * will execute against the document store (ElasticSearch etc).
+   * </p>
+   * <p>
+   * This is logically similar to or().
+   * </p>
+   */
+  Junction<T> should();
+
+  /**
+   * Start a list of expressions that will be joined by MUST NOT.
+   * <p>
+   * This automatically makes the query a useDocStore(true) query that
+   * will execute against the document store (ElasticSearch etc).
+   * </p>
+   * <p>
+   * This is logically similar to not().
+   * </p>
+   */
+  Junction<T> mustNot();
+
+  /**
+   * End a junction returning the parent expression list.
+   * <p>
+   * Ends a and(), or(), not(), must(), mustNot() or should() junction
+   * such that you get the parent expression.
+   * </p>
+   * <p>
+   * Alternatively you can always use where() to return the top level expression list.
    * </p>
    */
   ExpressionList<T> endJunction();

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

@@ -249,4 +249,22 @@ public class FetchConfig implements Serializable {
     return queryAll;
   }
 
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+
+    FetchConfig that = (FetchConfig) o;
+    if (lazyBatchSize != that.lazyBatchSize) return false;
+    if (queryBatchSize != that.queryBatchSize) return false;
+    return queryAll == that.queryAll;
+  }
+
+  @Override
+  public int hashCode() {
+    int result = lazyBatchSize;
+    result = 92821 * result + queryBatchSize;
+    result = 92821 * result + (queryAll ? 1 : 0);
+    return result;
+  }
 }

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

@@ -0,0 +1,26 @@
+package com.avaje.ebean;
+
+import java.util.Set;
+
+/**
+ * Provides paths and properties for an object graph that can be used to control what parts of the object graph
+ * is fetching (select and fetch clauses) and also can be used to control JSON marshalling (what parts of the object
+ * graph are included in the JSON).
+ */
+public interface FetchPath {
+
+  /**
+   * Return true if the path is included in this FetchPath.
+   */
+  boolean hasPath(String path);
+
+  /**
+   * Return the properties at the given path.
+   */
+  Set<String> getProperties(String path);
+
+  /**
+   * Apply the fetch path to the query.
+   */
+  <T> void apply(Query<T> query);
+}

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

@@ -9,70 +9,129 @@ package com.avaje.ebean;
  * <p>
  * Note: where() always takes you to the top level WHERE expression list.
  * </p>
- * 
- * <pre class="code">
+ *
+ * <pre>{@code
  * Query q =
  *     Ebean.find(Person.class)
- *         .where().disjunction()
- *         .like(&quot;name&quot;, &quot;Rob%&quot;)
- *         .eq(&quot;status&quot;, Status.NEW)
- * 
- *         // where() returns us to the top level expression list
- *         .where().gt(&quot;id&quot;, 10);
- * 
+ *       .where()
+ *         .or()
+ *           .like("name", "Rob%")
+ *           .eq("status", Status.NEW)
+ *
+ *       // where() returns us to the top level expression list
+ *       .where().gt("id", 10);
+ *
  * // read as...
  * // where ( ((name like Rob%) or (status = NEW)) AND (id &gt; 10) )
- * </pre>
- * 
+ * }</pre>
+ *
  * <p>
  * Note: endJunction() takes you to the parent expression list
  * </p>
- * 
- * <pre class="code">
+ *
+ * <pre>{@code
  * Query q =
  *     Ebean.find(Person.class)
- *         .where().disjunction()
- *         .like(&quot;name&quot;, &quot;Rob%&quot;)
- *         .eq(&quot;status&quot;, Status.NEW)
- *         .endJunction()
- * 
- *         // endJunction().. takes us to the 'parent' expression list
- *         // which in this case is the top level (same as where())
- * 
- *         .gt(&quot;id&quot;, 10);
- * 
+ *       .where()
+ *         .or()
+ *           .like("name", "Rob%")
+ *           .eq("status", Status.NEW)
+ *           .endJunction()
+ *
+ *           // endJunction().. takes us to the 'parent' expression list
+ *           // which in this case is the top level (same as where())
+ *
+ *         .gt("id", 10);
+ *
  * // read as...
- * // where ( ((name like Rob%) or (status = NEW)) AND (id &gt; 10) )
- * </pre>
- * 
+ * // where ( ((name like Rob%) or (status = NEW)) AND (id > 10) )
+ * }</pre>
+ *
  * <p>
  * Example of a nested disjunction.
  * </p>
- * 
- * <pre class="code">
- * Query&lt;Customer&gt; q = 
+ *
+ * <pre>{@code
+ * Query<Customer> q =
  *  Ebean.find(Customer.class)
  *      .where()
- *          .disjunction()
- *              .conjunction()
- *                  .startsWith(&quot;name&quot;, &quot;r&quot;)
- *                  .eq(&quot;anniversary&quot;, onAfter)
- *                  .endJunction()
- *              .conjunction()
- *                  .eq(&quot;status&quot;, Customer.Status.ACTIVE)
- *                  .gt(&quot;id&quot;, 0)
- *                  .endJunction()
- *      .order().asc(&quot;name&quot;);
- * 
+ *        .or()
+ *          .and()
+ *            .startsWith("name", "r")
+ *            .eq("anniversary", onAfter)
+ *            .endJunction()
+ *          .and()
+ *            .eq("status", Customer.Status.ACTIVE)
+ *            .gt("id", 0)
+ *            .endJunction()
+ *      .order().asc("name");
+ *
  * q.findList();
  * String s = q.getGeneratedSql();
- * 
+ *
  *  // this produces an expression like:
- *  
- *  ( name like ? and c.anniversary = ? ) or (c.status = ?  and c.id &gt; ? )
- * 
- * </pre>
+ *  ( name like ? and c.anniversary = ? ) or (c.status = ?  and c.id > ? )
+ *
+ * }</pre>
  */
 public interface Junction<T> extends Expression, ExpressionList<T> {
 
+  /**
+   * The type of Junction used in full text expressions.
+   */
+  enum Type {
+
+    /**
+     * AND group.
+     */
+    AND(" and ", ""),
+
+    /**
+     * OR group.
+     */
+    OR(" or ", ""),
+
+    /**
+     * NOT group.
+     */
+    NOT(" and ", "not "),
+
+    /**
+     * Text search AND group.
+     */
+    MUST("must", ""),
+
+    /**
+     * Text search NOT group.
+     */
+    MUST_NOT("must_not", ""),
+
+    /**
+     * Text search OR group.
+     */
+    SHOULD("should", "");
+
+    String prefix;
+    String literal;
+
+    Type(String literal, String prefix) {
+      this.literal = literal;
+      this.prefix = prefix;
+    }
+
+    /**
+     * Return the literal value for this type.
+     */
+    public String literal() {
+      return literal;
+    }
+
+    /**
+     * Return the prefix value for this type.
+     */
+    public String prefix() {
+      return prefix;
+    }
+  }
+
 }

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

@@ -1,7 +1,6 @@
 package com.avaje.ebean;
 
 import com.avaje.ebean.bean.EntityBean;
-import com.avaje.ebean.text.PathProperties;
 import com.avaje.ebean.util.ClassUtil;
 import org.jetbrains.annotations.Nullable;
 
@@ -271,6 +270,19 @@ public abstract class Model {
     return db().delete(this);
   }
 
+  /**
+   * Delete a bean permanently without soft delete.
+   * <p>
+   * This is used when the bean contains a <code>@SoftDelete</code> property and we
+   * want to perform a hard/permanent delete.
+   * </p>
+   *
+   * @see EbeanServer#deletePermanent(Object)
+   */
+  public boolean deletePermanent() {
+    return db().deletePermanent(this);
+  }
+
   /**
    * Perform an update using this entity against the specified server.
    */
@@ -588,10 +600,10 @@ public abstract class Model {
     /**
      * Creates a query applying the path properties to set the select and fetch clauses.
      * <p>
-     * Equivalent to {@link Query#apply(com.avaje.ebean.text.PathProperties)}
+     * Equivalent to {@link Query#apply(FetchPath)}
      */
-    public Query<T> apply(PathProperties pathProperties) {
-      return db().find(type).apply(pathProperties);
+    public Query<T> apply(FetchPath fetchPath) {
+      return db().find(type).apply(fetchPath);
     }
 
     /**

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

@@ -0,0 +1,18 @@
+package com.avaje.ebean;
+
+import javax.persistence.PersistenceException;
+
+/**
+ * Captures and wraps IOException's occurring during ElasticSearch processing etc.
+ */
+public class PersistenceIOException extends PersistenceException {
+
+  public PersistenceIOException(String msg, Exception cause) {
+    super(msg, cause);
+  }
+
+  public PersistenceIOException(Exception cause) {
+    super(cause);
+  }
+
+}

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

@@ -58,15 +58,18 @@ class PrimaryServer {
    */
   private static String determineDefaultServerName() {
 
-    String defaultServerName = System.getProperty("datasource.default");
+    String defaultServerName = System.getenv("EBEAN_DB");
     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 = System.getProperty("datasource.default");
+      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");
+          }
+        }
+      }
     }
     return defaultServerName;
   }

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

@@ -1,10 +1,8 @@
 package com.avaje.ebean;
 
-import com.avaje.ebean.text.PathProperties;
 import org.jetbrains.annotations.Nullable;
 
 import javax.persistence.NonUniqueResultException;
-import java.io.Serializable;
 import java.sql.Timestamp;
 import java.util.List;
 import java.util.Map;
@@ -275,7 +273,7 @@ import java.util.Set;
  * @param <T>
  *          the type of Entity bean this query will fetch.
  */
-public interface Query<T> extends Serializable {
+public interface Query<T> {
 
   /**
    * Return the RawSql that was set to use for this query.
@@ -522,10 +520,10 @@ public interface Query<T> extends Serializable {
   /**
    * Apply the path properties replacing the select and fetch clauses.
    * <p>
-   * This is typically used when the PathProperties is applied to both the query and the JSON output.
+   * This is typically used when the FetchPath is applied to both the query and the JSON output.
    * </p>
    */
-  Query<T> apply(PathProperties pathProperties);
+  Query<T> apply(FetchPath fetchPath);
 
   /**
    * Execute the query returning the list of Id's.
@@ -1043,6 +1041,27 @@ public interface Query<T> extends Serializable {
    */
   ExpressionList<T> where();
 
+  /**
+   * Add Full text search expressions for Document store queries.
+   * <p>
+   * This is currently ElasticSearch only and provides the full text
+   * expressions such as Match and Multi-Match.
+   * </p>
+   * <p>
+   * This automatically makes this query a "Doc Store" query and will execute
+   * against the document store (ElasticSearch).
+   * </p>
+   * <p>
+   * Expressions added here are added to the "query" section of an ElasticSearch
+   * query rather than the "filter" section.
+   * </p>
+   * <p>
+   * Expressions added to the where() are added to the "filter" section of an
+   * ElasticSearch query.
+   * </p>
+   */
+  ExpressionList<T> text();
+
   /**
    * This applies a filter on the 'many' property list rather than the root
    * level objects.
@@ -1286,6 +1305,14 @@ public interface Query<T> extends Serializable {
    */
   Query<T> setUseQueryCache(boolean useQueryCache);
 
+  /**
+   * Set to true if this query should execute against the doc store.
+   * <p>
+   *   When setting this you may also consider disabling lazy loading.
+   * </p>
+   */
+  Query<T> setUseDocStore(boolean useDocStore);
+
   /**
    * When set to true when you want the returned beans to be read only.
    */
@@ -1365,4 +1392,5 @@ public interface Query<T> extends Serializable {
    * </p>
    */
   Set<String> validate();
+
 }

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

@@ -206,6 +206,14 @@ public final class RawSql implements Serializable {
     return sql;
   }
 
+  /**
+   * Return the key;
+   */
+  public Key getKey() {
+    boolean parsed = sql != null && sql.parsed;
+    String unParsedSql = (sql == null) ? "" : sql.unparsedSql;
+    return new Key(parsed, unParsedSql, columnMapping);
+  }
   
   /**
    * Return the resultSet if this is a ResultSet based RawSql.
@@ -221,16 +229,6 @@ public final class RawSql implements Serializable {
     return columnMapping;
   }
 
-  /**
-   * Return the hash for this query.
-   */
-  public int queryHash() {
-    if (resultSet != null) {
-      return 31 * columnMapping.queryHash();
-    }
-    return 31 * sql.queryHash() + columnMapping.queryHash();
-  }
-
   /**
    * Represents the sql part of the query. For parsed RawSql the sql is broken
    * up so that Ebean can insert extra WHERE and HAVING expressions into the
@@ -260,13 +258,10 @@ public final class RawSql implements Serializable {
 
     private final boolean distinct;
 
-    private final int queryHashCode;
-
     /**
      * Construct for unparsed SQL.
      */
     protected Sql(String unparsedSql) {
-      this.queryHashCode = unparsedSql.hashCode();
       this.parsed = false;
       this.unparsedSql = unparsedSql;
       this.preFrom = null;
@@ -282,12 +277,11 @@ public final class RawSql implements Serializable {
     /**
      * Construct for parsed SQL.
      */
-    protected Sql(int queryHashCode, String preFrom, String preWhere, boolean andWhereExpr,
+    protected Sql(String unparsedSql, String preFrom, String preWhere, boolean andWhereExpr,
         String preHaving, boolean andHavingExpr, String orderByPrefix, String orderBy, boolean distinct) {
 
-      this.queryHashCode = queryHashCode;
+      this.unparsedSql = unparsedSql;
       this.parsed = true;
-      this.unparsedSql = null;
       this.preFrom = preFrom;
       this.preHaving = preHaving;
       this.preWhere = preWhere;
@@ -298,13 +292,6 @@ public final class RawSql implements Serializable {
       this.distinct = distinct;
     }
 
-    /**
-     * Return a hash for this query.
-     */
-    public int queryHash() {
-      return queryHashCode;
-    }
-
     public String toString() {
       if (!parsed) {
         return "unparsed[" + unparsedSql + "]";
@@ -406,13 +393,10 @@ public final class RawSql implements Serializable {
 
     private final boolean immutable;
 
-    private final int queryHashCode;
-
     /**
      * Construct from parsed sql where the columns have been identified.
      */
     protected ColumnMapping(List<Column> columns) {
-      this.queryHashCode = 0;
       this.immutable = false;
       this.parsed = true;
       this.propertyMap = null;
@@ -428,7 +412,6 @@ public final class RawSql implements Serializable {
      * Construct for unparsed sql.
      */
     protected ColumnMapping() {
-      this.queryHashCode = 0;
       this.immutable = false;
       this.parsed = false;
       this.propertyMap = null;
@@ -443,17 +426,13 @@ public final class RawSql implements Serializable {
       this.immutable = false;
       this.parsed = false;
       this.propertyMap = null;
-      //this.propertyColumnMap = null;
       this.dbColumnMap = new LinkedHashMap<String, Column>();
-      
-      int hc = 31;
+
       int pos = 0;
       for (String prop : propertyNames) {
-        hc = 31 * hc + prop.hashCode();
         dbColumnMap.put(prop, new Column(pos++, prop, null, prop));
       }
       propertyColumnMap = dbColumnMap;
-      this.queryHashCode = hc;
     }
 
     /**
@@ -464,20 +443,28 @@ public final class RawSql implements Serializable {
       this.parsed = parsed;
       this.dbColumnMap = dbColumnMap;
 
-      int hc = ColumnMapping.class.getName().hashCode();
-
       HashMap<String, Column> pcMap = new HashMap<String, Column>();
       HashMap<String, String> pMap = new HashMap<String, String>();
 
       for (Column c : dbColumnMap.values()) {
         pMap.put(c.getPropertyName(), c.getDbColumn());
         pcMap.put(c.getPropertyName(), c);
-        hc = 31 * hc + ((c.getPropertyName() == null) ? 0 : c.getPropertyName().hashCode());
-        hc = 31 * hc + ((c.getDbColumn() == null) ? 0 : c.getDbColumn().hashCode());
       }
       this.propertyMap = Collections.unmodifiableMap(pMap);
       this.propertyColumnMap = Collections.unmodifiableMap(pcMap);
-      this.queryHashCode = hc;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+      if (this == o) return true;
+      if (o == null || getClass() != o.getClass()) return false;
+      ColumnMapping that = (ColumnMapping) o;
+      return dbColumnMap.equals(that.dbColumnMap);
+    }
+
+    @Override
+    public int hashCode() {
+      return dbColumnMap.hashCode();
     }
 
     /**
@@ -521,16 +508,6 @@ public final class RawSql implements Serializable {
       }
     }
 
-    /**
-     * Return the query hash for this column mapping.
-     */
-    public int queryHash() {
-      if (queryHashCode == 0) {
-        throw new RuntimeException("Bug: queryHashCode == 0");
-      }
-      return queryHashCode;
-    }
-
     /**
      * Returns true if the Columns where supplied by parsing the sql select
      * clause.
@@ -585,6 +562,9 @@ public final class RawSql implements Serializable {
      * <p>
      * For example modify all mappings with table alias "c" to have the path prefix "customer".
      * </p>
+     * <p>
+     * For the "Root type" you don't need to specify a tableAliasMapping.
+     * </p>
      */
     public void tableAliasMapping(String tableAlias, String path) {
 
@@ -645,6 +625,27 @@ public final class RawSql implements Serializable {
         }
       }
 
+      @Override
+      public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        Column that = (Column) o;
+        if (indexPos != that.indexPos) return false;
+        if (!dbColumn.equals(that.dbColumn)) return false;
+        if (dbAlias != null ? !dbAlias.equals(that.dbAlias) : that.dbAlias != null) return false;
+        return propertyName != null ? propertyName.equals(that.propertyName) : that.propertyName == null;
+      }
+
+      @Override
+      public int hashCode() {
+        int result = indexPos;
+        result = 31 * result + dbColumn.hashCode();
+        result = 31 * result + (dbAlias != null ? dbAlias.hashCode() : 0);
+        result = 31 * result + (propertyName != null ? propertyName.hashCode() : 0);
+        return result;
+      }
+
       public String toString() {
         return dbColumn + "->" + propertyName;
       }
@@ -696,4 +697,39 @@ public final class RawSql implements Serializable {
       }
     }
   }
+
+  /**
+   * A key for the RawSql object using for the query plan.
+   */
+  public static final class Key {
+
+    private final boolean parsed;
+    private final ColumnMapping columnMapping;
+    private final String unParsedSql;
+
+    Key(boolean parsed, String unParsedSql, ColumnMapping columnMapping) {
+      this.parsed = parsed;
+      this.unParsedSql = unParsedSql;
+      this.columnMapping = columnMapping;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+      if (this == o) return true;
+      if (o == null || getClass() != o.getClass()) return false;
+
+      Key that = (Key) o;
+      return parsed == that.parsed
+          && columnMapping.equals(that.columnMapping)
+          && unParsedSql.equals(that.unParsedSql);
+    }
+
+    @Override
+    public int hashCode() {
+      int result = (parsed ? 1 : 0);
+      result = 31 * result + columnMapping.hashCode();
+      result = 31 * result + unParsedSql.hashCode();
+      return result;
+    }
+  }
 }

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

@@ -106,6 +106,9 @@ public class RawSqlBuilder {
    * <p>
    * For example modify all mappings with table alias "c" to have the path prefix "customer".
    * </p>
+   * <p>
+   * For the "Root type" you don't need to specify a tableAliasMapping.
+   * </p>
    */
   public RawSqlBuilder tableAliasMapping(String tableAlias, String path) {
     columnMapping.tableAliasMapping(tableAlias, path);

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

@@ -1,5 +1,7 @@
 package com.avaje.ebean;
 
+import com.avaje.ebean.annotation.DocStoreMode;
+import com.avaje.ebean.config.DocStoreConfig;
 import com.avaje.ebean.config.PersistBatch;
 
 import javax.persistence.PersistenceException;
@@ -81,6 +83,29 @@ public interface Transaction extends Closeable {
    */
   boolean isActive();
 
+  /**
+   * Set the behavior for document store updates on this transaction.
+   * <p>
+   *   For example, set the mode to DocStoreEvent.IGNORE for this transaction and
+   *   then any changes via this transaction are not sent to the doc store. This
+   *   would be used when doing large bulk inserts into the database and we want
+   *   to control how that is sent to the document store.
+   * </p>
+   */
+  void setDocStoreMode(DocStoreMode mode);
+
+  /**
+   * Set the batch size to use for sending messages to the document store.
+   * <p>
+   *   You might set this if you know the changes in this transaction result in especially large or
+   *   especially small payloads and want to adjust the batch size to match.
+   * </p>
+   * <p>
+   *   Setting this overrides the default of {@link DocStoreConfig#getBulkBatchSize()}
+   * </p>
+   */
+  void setDocStoreBatchSize(int batchSize);
+
   /**
    * Explicitly turn off or on the cascading nature of save() and delete(). This
    * gives the developer exact control over what beans are saved and deleted

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

@@ -0,0 +1,32 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Used to indicate that a particular string property should be treated as a 'code' and not analysed for text searching.
+ * <p>
+ * By default all Id properties and all Enum properties are treated as 'code' and not analysed.
+ * </p>
+ */
+@Target({ElementType.FIELD})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface DocCode {
+
+  /**
+   * Set to true to have the property additionally stored separately from _source.
+   */
+  boolean store() default false;
+
+  /**
+   * Set a boost value specific to this property.
+   */
+  float boost() default 1;
+
+  /**
+   * Set a value to use instead of null.
+   */
+  String nullValue() default "";
+}

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

@@ -0,0 +1,24 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Specify the entity type maps to a document store (like ElasticSearch).
+ */
+@Target({ ElementType.TYPE })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface DocMapping {
+
+  /**
+   * The property name the mapping applies to.
+   */
+  String name();
+
+  /**
+   * Mapping options.
+   */
+  DocProperty options();
+}

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

@@ -0,0 +1,110 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Specify the entity type maps to a document store (like ElasticSearch).
+ */
+@Target({ ElementType.FIELD })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface DocProperty {
+
+  /**
+   * Set this to true to indicate that this property should be un-analysed.
+   */
+  boolean code() default false;
+
+  /**
+   * Set this to true to get an additional un-analysed 'raw' field to use for sorting etc.
+   */
+  boolean sortable() default false;
+
+  /**
+   * Set to true to have the property additionally stored separately from _source.
+   */
+  boolean store() default false;
+
+  /**
+   * Set a boost value specific to this property.
+   */
+  float boost() default 1;
+
+  /**
+   * Set a value to use instead of null.
+   */
+  String nullValue() default "";
+
+  /**
+   * Set this to false to exclude this from the _all property.
+   */
+  boolean includeInAll() default true;
+
+  /**
+   * The analyzer to use.
+   */
+  String analyzer() default "";
+
+  /**
+   * The analyzer to use for searches.
+   */
+  String searchAnalyzer() default "";
+
+  /**
+   * The index options for this property.
+   */
+  Option options() default Option.DEFAULT;
+
+  /**
+   * Set this to false such that doc values are not stored separately for this property.
+   */
+  boolean docValues() default true;
+
+  /**
+   * Set a copyTo field.
+   */
+  String copyTo() default "";
+
+  /**
+   * Set to false to disable the field from indexing, it will only be get/set in _source.
+   */
+  boolean enabled() default true;
+
+  /**
+   * Set to false such that norms are not stored.
+   */
+  boolean norms() default true;
+
+  /**
+   * Index options for a property.
+   */
+  enum Option {
+
+    /**
+     * Only index the doc number.
+     */
+    DOCS,
+
+    /**
+     * Doc number and term frequencies are indexed.
+     */
+    FREQS,
+
+    /**
+     * Doc number, term frequencies and term positions are indexed.
+     */
+    POSITIONS,
+
+    /**
+     * Doc number, term frequencies, term positions and start/end offsets are indexed.
+     */
+    OFFSETS,
+
+    /**
+     * Use the default which means analysed string properties use POSITIONS as the default and all other types use DOCS.
+     */
+    DEFAULT
+  }
+}

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

@@ -0,0 +1,34 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Used to indicate that a particular string property should support sorting. What this typically means is that
+ * for ElasticSearch an additional 'raw' field is added that stores the un-analysed value. This un-analysed value
+ * can be used for sorting etc and the original field used for text searching.
+ * <p>
+ * For example, customer name and product name are good candidates for marking with @DocSortable.
+ * </p>
+ */
+@Target({ ElementType.FIELD })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface DocSortable {
+
+  /**
+   * Set to true to have the property additionally stored separately from _source.
+   */
+  boolean store() default false;
+
+  /**
+   * Set a boost value specific to this property.
+   */
+  float boost() default 1;
+
+  /**
+   * Set a value to use instead of null.
+   */
+  String nullValue() default "";
+}

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

@@ -0,0 +1,88 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Specify the entity type maps to a document store (like ElasticSearch).
+ */
+@Target({ ElementType.TYPE })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface DocStore {
+
+  /**
+   * A unique Id used when queuing reindex events.
+   */
+  String queueId() default "";
+
+  /**
+   * The ElasticSearch index name. If left unspecified the short name of the bean type is used.
+   */
+  String indexName() default "";
+
+  /**
+   * The ElasticSearch index type. If left unspecified the short name of the bean type is used.
+   */
+  String indexType() default "";
+
+  /**
+   * The number of shards this index should use.
+   */
+  int shards() default 0;
+
+  /**
+   * The number of replicas this index should use.
+   */
+  int replicas() default 0;
+
+  /**
+   * Additional mapping that can be defined on the properties.
+   */
+  DocMapping[] mapping() default {};
+
+  /**
+   * Specify the behavior when bean Insert, Update, Delete events occur.
+   */
+  DocStoreMode persist() default DocStoreMode.DEFAULT;
+
+  /**
+   * Specify the behavior when bean Insert occurs.
+   */
+  DocStoreMode insert() default DocStoreMode.DEFAULT;
+
+  /**
+   * Specify the behavior when bean Update occurs.
+   */
+  DocStoreMode update() default DocStoreMode.DEFAULT;
+
+  /**
+   * Specify the behavior when bean Delete occurs.
+   */
+  DocStoreMode delete() default DocStoreMode.DEFAULT;
+
+  /**
+   * Specify to include only some properties in the doc store document.
+   * <p>
+   * If this is left as default then all scalar properties are included,
+   * all @ManyToOne properties are included with just the nested id property
+   * and no @OneToMany properties are included.
+   * </p>
+   * <p>
+   * Note that typically DocStoreEmbedded is used on @ManyToOne and @OneToMany
+   * properties to indicate what part of the nested document should be included.
+   * </p>
+   *
+   * <h3>Example:</h3>
+   * <pre>{@code
+   *
+   * // only include the customer id and name
+   * @DocStore(doc = "id,name")
+   * @Entity @Table(name = "o_order")
+   * public class Customer {
+   *
+   * }</pre>
+   */
+  String doc() default "";
+}

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

@@ -0,0 +1,37 @@
+package com.avaje.ebean.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Specify the property is included in the parent document store index.
+ *
+ * <pre>{@code
+ *
+ *
+ * @DocStore
+ * @Entity @Table(name = "o_order")
+ * public class Order {
+ *
+ *   ...
+ *   // include some customer details including
+ *   // nested billingAddress
+ *   @DocStoreEmbedded(doc = "id,status,name,billingAddress(*,country(*)")
+ *   @ManyToOne
+ *   Customer customer;
+ *
+ *
+ * }</pre>
+ */
+@Target({ ElementType.FIELD })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface DocStoreEmbedded {
+
+  /**
+   * The properties on the embedded bean to include in the index.
+   */
+  String doc() default "";
+
+}

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

@@ -0,0 +1,38 @@
+package com.avaje.ebean.annotation;
+
+/**
+ * Defines the behavior options when a Insert, Update or Delete event occurs
+ * on a bean with an associated ElasticSearch index.
+ * <p>
+ * For some indexes or some transactions it can be beneficial to queue the event
+ * for later processing rather than look to update ElasticSearch at that time.
+ * </p>
+ */
+public enum DocStoreMode {
+
+  /**
+   * Add the event to the queue for processing later (delaying the update to the document store).
+   */
+  QUEUE,
+
+  /**
+   * Update the document store when transaction succeeds.
+   */
+  UPDATE,
+
+  /**
+   * Ignore the event and not update the document store.
+   * <p>
+   *   This can be used on a index or for a transaction where you want to have more
+   *   manual programmatic control over the updating of the document store.  Say you want to
+   *   IGNORE on a particular transaction and instead manually queue a bulk update.
+   * </p>
+   */
+  IGNORE,
+
+  /**
+   * The actual mode of QUEUE, UPDATE or IGNORE is set from the default configuration.
+   */
+  DEFAULT
+
+}

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

@@ -31,6 +31,11 @@ public interface BeanCollection<E> extends Serializable {
     ALL
   }
 
+  /**
+   * Load bean from another collection.
+   */
+  void loadFrom(BeanCollection<?> other);
+
   /**
    * Add a bean to the list/set with modifyListen notification.
    */
@@ -125,6 +130,11 @@ public interface BeanCollection<E> extends Serializable {
    */
   void internalAdd(Object bean);
 
+  /**
+   * Add the bean with a check to see if it is already contained.
+   */
+  void internalAddWithCheck(Object bean);
+
   /**
    * Return the number of elements in the List Set or Map.
    */

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

@@ -1,5 +1,10 @@
 package com.avaje.ebean.bean;
 
+import com.avaje.ebean.Ebean;
+import com.avaje.ebean.ValuePair;
+
+import javax.persistence.EntityNotFoundException;
+import javax.persistence.PersistenceException;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.beans.PropertyChangeSupport;
@@ -11,12 +16,6 @@ import java.util.LinkedHashSet;
 import java.util.Map;
 import java.util.Set;
 
-import javax.persistence.EntityNotFoundException;
-import javax.persistence.PersistenceException;
-
-import com.avaje.ebean.Ebean;
-import com.avaje.ebean.ValuePair;
-
 /**
  * This is the object added to every entity bean using byte code enhancement.
  * <p>
@@ -92,6 +91,8 @@ public final class EntityBeanIntercept implements Serializable {
 
   private int lazyLoadProperty = -1;
 
+  private Object ownerId;
+
   /**
    * Create a intercept with a given entity.
    * <p>
@@ -218,6 +219,18 @@ public final class EntityBeanIntercept implements Serializable {
     this.fullyLoadedBean = fullyLoadedBean;
   }
 
+  /**
+   * Check each property to see if the bean is partially loaded.
+   */
+  public boolean isPartial() {
+    for (int i = 0; i < loadedProps.length; i++) {
+      if (!loadedProps[i]) {
+        return true;
+      }
+    }
+    return false;
+  }
+
   /**
    * Return true if this bean has been directly modified (it has oldValues) or
    * if any embedded beans are either new or dirty (and hence need saving).
@@ -342,18 +355,11 @@ public final class EntityBeanIntercept implements Serializable {
   }
 
   /**
-   * Check if the lazy load succeeded. If not then mark this bean as having
-   * failed lazy loading due to the underlying row being deleted.
-   * <p>
-   * We mark the bean this way rather than immediately fail as we might be batch
-   * lazy loading and this bean might not be used by the client code at all.
-   * Instead we will fail as soon as the client code tries to use this bean.
-   * </p>
+   * Set lazy load failure flag.
    */
-  public void checkLazyLoadFailure() {
-    if (lazyLoadProperty != -1) {
-      this.lazyLoadFailure = true;
-    }
+  public void setLazyLoadFailure(Object ownerId) {
+    this.lazyLoadFailure = true;
+    this.ownerId = ownerId;
   }
 
   /**
@@ -475,7 +481,7 @@ public final class EntityBeanIntercept implements Serializable {
   public void setLoadedProperty(int propertyIndex) {
     loadedProps[propertyIndex] = true;
   }
-  
+
   /**
    * Return true if the property is loaded.
    */
@@ -566,6 +572,23 @@ public final class EntityBeanIntercept implements Serializable {
     return props;
   }
 
+  /**
+   * Return the array of flags indicating the dirty properties.
+   */
+  public boolean[] getDirtyProperties() {
+    int len = getPropertyLength();
+    boolean[] dirties = new boolean[len];
+    for (int i = 0; i < len; i++) {
+      if (changedProps != null && changedProps[i]) {
+        dirties[i] = true;
+      } else if (embeddedDirty != null && embeddedDirty[i]) {
+        // an embedded property has been changed - recurse
+        dirties[i] = true;
+      }
+    }
+    return dirties;
+  }
+
   /**
    * Return the set of dirty properties.
    */
@@ -748,7 +771,7 @@ public final class EntityBeanIntercept implements Serializable {
 
     if (lazyLoadFailure) {
       // failed when batch lazy loaded by another bean in the batch
-      throw new EntityNotFoundException("Bean has been deleted - lazy loading failed");
+      throw new EntityNotFoundException("Lazy loading failed on type:" + owner.getClass().getName() + " id:" + ownerId + " - Bean has been deleted");
     }
 
     if (lazyLoadProperty == -1) {
@@ -763,7 +786,7 @@ public final class EntityBeanIntercept implements Serializable {
 
       if (lazyLoadFailure) {
         // failed when lazy loading this bean
-        throw new EntityNotFoundException("Bean has been deleted - lazy loading failed");
+        throw new EntityNotFoundException("Lazy loading failed on type:" + owner.getClass().getName() + " id:" + ownerId + " - Bean has been deleted.");
       }
 
       // bean should be loaded and intercepting now. setLoaded() has

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

@@ -10,31 +10,31 @@ package com.avaje.ebean.bean;
 public interface PersistenceContext {
 
   /**
-   * Put the entity bean into the PersistanceContext.
+   * Put the entity bean into the PersistenceContext.
    */
-  void put(Object id, Object bean);
+  void put(Class<?> rootType, Object id, Object bean);
 
   /**
-   * Put the entity bean into the PersistanceContext if one is not already
+   * Put the entity bean into the PersistenceContext if one is not already
    * present (for this id).
    * <p>
    * Returns an existing entity bean (if one is already there) and otherwise
    * returns null.
    * </p>
    */
-  Object putIfAbsent(Object id, Object bean);
+  Object putIfAbsent(Class<?> rootType, Object id, Object bean);
 
   /**
    * Return an object given its type and unique id.
    */
-  Object get(Class<?> beanType, Object uid);
+  Object get(Class<?> rootType, Object uid);
 
   /**
    * Get the bean from the persistence context also checked to see if it had
    * been previously deleted (if so then you also can't hit the L2 cache to
    * fetch the bean for this particular persistence context).
    */
-  WithOption getWithOption(Class<?> beanType, Object uid);
+  WithOption getWithOption(Class<?> rootType, Object uid);
 
   /**
    * Clear all the references.
@@ -44,22 +44,22 @@ public interface PersistenceContext {
   /**
    * Clear all the references for a given type of entity bean.
    */
-  void clear(Class<?> beanType);
+  void clear(Class<?> rootType);
 
   /**
    * Clear the reference to a specific entity bean.
    */
-  void clear(Class<?> beanType, Object uid);
+  void clear(Class<?> rootType, Object uid);
 
   /**
    * Clear the reference as a result of an entity being deleted.
    */
-  void deleted(Class<?> beanType, Object id);
+  void deleted(Class<?> rootType, Object id);
 
   /**
    * Return the number of beans of the given type in the persistence context.
    */
-  int size(Class<?> beanType);
+  int size(Class<?> rootType);
 
   /**
    * Wrapper on a bean to also indicate if a bean has been deleted.

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

@@ -0,0 +1,21 @@
+package com.avaje.ebean.bean;
+
+import javax.persistence.Entity;
+
+/**
+ * Utility to find the root bean type.
+ */
+public class PersistenceContextUtil {
+
+  /**
+   * Find and return the root bean type for the given class.
+   */
+  public static Class<?> root(Class<?> beanType) {
+    Class<?> parent = beanType.getSuperclass();
+    while (parent != null && parent.isAnnotationPresent(Entity.class)) {
+      beanType = parent;
+      parent = parent.getSuperclass();
+    }
+    return beanType;
+  }
+}

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

@@ -1,5 +1,10 @@
 package com.avaje.ebean.common;
 
+import com.avaje.ebean.bean.BeanCollection;
+import com.avaje.ebean.bean.BeanCollectionAdd;
+import com.avaje.ebean.bean.BeanCollectionLoader;
+import com.avaje.ebean.bean.EntityBean;
+
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Collection;
@@ -8,17 +13,13 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.ListIterator;
 
-import com.avaje.ebean.bean.BeanCollectionAdd;
-import com.avaje.ebean.bean.BeanCollectionLoader;
-import com.avaje.ebean.bean.EntityBean;
-
 /**
  * List capable of lazy loading.
  */
 public final class BeanList<E> extends AbstractBeanCollection<E> implements List<E>, BeanCollectionAdd {
 
   private static final long serialVersionUID = 1L;
-  
+
   /**
    * The underlying List implementation.
    */
@@ -64,6 +65,15 @@ public final class BeanList<E> extends AbstractBeanCollection<E> implements List
     list.add((E) bean);
   }
 
+  @Override
+  @SuppressWarnings("unchecked")
+  public void loadFrom(BeanCollection<?> other) {
+    if (list == null) {
+      list = new ArrayList<E>();
+    }
+    list.addAll((Collection<? extends E>) other.getActualDetails());
+  }
+
   @SuppressWarnings("unchecked")
   public void internalAdd(Object bean) {
     if (list == null) {
@@ -74,6 +84,13 @@ public final class BeanList<E> extends AbstractBeanCollection<E> implements List
     }
   }
 
+  @Override
+  public void internalAddWithCheck(Object bean) {
+    if (list == null || !list.contains(bean)) {
+      internalAdd(bean);
+    }
+  }
+
   public boolean checkEmptyLazyLoad() {
     if (list == null) {
       list = new ArrayList<E>();
@@ -99,11 +116,11 @@ public final class BeanList<E> extends AbstractBeanCollection<E> implements List
   private void initAsUntouched() {
     init(false);
   }
-  
+
   private void init() {
     init(true);
   }
-  
+
   private void init(boolean setTouched) {
     synchronized (this) {
       if (list == null) {
@@ -134,7 +151,7 @@ public final class BeanList<E> extends AbstractBeanCollection<E> implements List
   public Collection<E> getActualDetails() {
     return list;
   }
-  
+
   @Override
   public Collection<?> getActualEntries() {
     return list;

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

@@ -1,5 +1,6 @@
 package com.avaje.ebean.common;
 
+import com.avaje.ebean.bean.BeanCollection;
 import com.avaje.ebean.bean.BeanCollectionLoader;
 import com.avaje.ebean.bean.EntityBean;
 
@@ -51,6 +52,14 @@ public final class BeanMap<K, E> extends AbstractBeanCollection<E> implements Ma
     return !touched && (map == null || map.isEmpty());
   }
 
+  @Override
+  @SuppressWarnings("unchecked")
+  public void loadFrom(BeanCollection<?> other) {
+    BeanMap<K,E> otherMap = (BeanMap<K,E>)other;
+    internalPutNull();
+    map.putAll(otherMap.getActualMap());
+  }
+
   public void internalPutNull() {
     if (map == null) {
       map = new LinkedHashMap<K, E>();
@@ -66,7 +75,18 @@ public final class BeanMap<K, E> extends AbstractBeanCollection<E> implements Ma
       map.put((K) key, (E) bean);
     }
   }
-  
+
+  public void internalPutWithCheck(Object key, Object bean) {
+    if (map == null || !map.containsKey(key)) {
+      internalPut(key, bean);
+    }
+  }
+
+  @Override
+  public void internalAddWithCheck(Object bean) {
+    throw new RuntimeException("Not allowed for map");
+  }
+
   public void internalAdd(Object bean) {
     throw new RuntimeException("Not allowed for map");
   }

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

@@ -1,15 +1,16 @@
 package com.avaje.ebean.common;
 
+import com.avaje.ebean.bean.BeanCollection;
+import com.avaje.ebean.bean.BeanCollectionAdd;
+import com.avaje.ebean.bean.BeanCollectionLoader;
+import com.avaje.ebean.bean.EntityBean;
+
 import java.io.Serializable;
 import java.util.Collection;
 import java.util.Iterator;
 import java.util.LinkedHashSet;
 import java.util.Set;
 
-import com.avaje.ebean.bean.BeanCollectionAdd;
-import com.avaje.ebean.bean.BeanCollectionLoader;
-import com.avaje.ebean.bean.EntityBean;
-
 /**
  * Set capable of lazy loading.
  */
@@ -57,6 +58,22 @@ public final class BeanSet<E> extends AbstractBeanCollection<E> implements Set<E
     set.add((E) bean);
   }
 
+  @Override
+  @SuppressWarnings("unchecked")
+  public void loadFrom(BeanCollection<?> other) {
+    if (set == null) {
+      set = new LinkedHashSet<E>();
+    }
+    set.addAll((Collection<? extends E>) other.getActualDetails());
+  }
+
+  @Override
+  public void internalAddWithCheck(Object bean) {
+    if (set == null || !set.contains(bean)) {
+      internalAdd(bean);
+    }
+  }
+
   @SuppressWarnings("unchecked")
   public void internalAdd(Object bean) {
     if (set == null) {
@@ -107,11 +124,11 @@ public final class BeanSet<E> extends AbstractBeanCollection<E> implements Set<E
   private void initAsUntouched() {
     init(false);
   }
-  
+
   private void init() {
     init(true);
   }
-  
+
   private void init(boolean setTouched) {
     synchronized (this) {
       if (set == null) {

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

@@ -25,7 +25,9 @@ public class AutoTuneConfig {
 
   private int garbageCollectionWait = 100;
   
-  private boolean skipCollectionOnShutdown;
+  private boolean skipGarbageCollectionOnShutdown;
+
+  private boolean skipProfileReportingOnShutdown;
 
   public AutoTuneConfig() {
   }
@@ -200,17 +202,33 @@ public class AutoTuneConfig {
   }
 
   /**
-   * Return true if profiling collection should be skipped on shutdown.
+   * Return true if triggering garbage collection should be skipped on shutdown.
+   * You might set this when System.GC() slows a application shutdown too much.
    */
-  public boolean isSkipCollectionOnShutdown() {
-    return skipCollectionOnShutdown;
+  public boolean isSkipGarbageCollectionOnShutdown() {
+    return skipGarbageCollectionOnShutdown;
   }
 
   /**
-   * Set to true if profiling collection should be skipped on shutdown.
+   * Set to true if triggering garbage collection should be skipped on shutdown.
+   * You might set this when System.GC() slows a application shutdown too much.
    */
-  public void setSkipCollectionOnShutdown(boolean skipCollectionOnShutdown) {
-    this.skipCollectionOnShutdown = skipCollectionOnShutdown;
+  public void setSkipGarbageCollectionOnShutdown(boolean skipGarbageCollectionOnShutdown) {
+    this.skipGarbageCollectionOnShutdown = skipGarbageCollectionOnShutdown;
+  }
+
+  /**
+   * Return true if profile reporting should be skipped on shutdown.
+   */
+  public boolean isSkipProfileReportingOnShutdown() {
+    return skipProfileReportingOnShutdown;
+  }
+
+  /**
+   * Set to true if profile reporting should be skipped on shutdown.
+   */
+  public void setSkipProfileReportingOnShutdown(boolean skipProfileReportingOnShutdown) {
+    this.skipProfileReportingOnShutdown = skipProfileReportingOnShutdown;
   }
 
   /**
@@ -222,8 +240,9 @@ public class AutoTuneConfig {
     queryTuningAddVersion = p.getBoolean("autoTune.queryTuningAddVersion", queryTuningAddVersion);
     queryTuningFile = p.get("autoTune.queryTuningFile", queryTuningFile);
 
-    skipCollectionOnShutdown = p.getBoolean("autoTune.skipCollectionOnShutdown", skipCollectionOnShutdown);
-    
+    skipGarbageCollectionOnShutdown = p.getBoolean("autoTune.skipGarbageCollectionOnShutdown", skipGarbageCollectionOnShutdown);
+    skipProfileReportingOnShutdown = p.getBoolean("autoTune.skipProfileReportingOnShutdown", skipProfileReportingOnShutdown);
+
     mode = p.getEnum(AutoTuneMode.class, "autoTune.mode", mode);
 
     profiling = p.getBoolean("autoTune.profiling", profiling);

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

@@ -90,6 +90,13 @@ public class ClassLoadConfig {
     return context.forName(name);
   }
 
+  /**
+   * Return the classLoader to use for service loading etc.
+   */
+  public ClassLoader getClassLoader() {
+    return context.getClassLoader();
+  }
+
   /**
    * Wraps the preferred, caller and context class loaders.
    */
@@ -138,6 +145,9 @@ public class ClassLoadConfig {
       return Class.forName(name, true, classLoader);
     }
 
+    ClassLoader getClassLoader() {
+      return preferredLoader != null ? preferredLoader : contextLoader;
+    }
   }
 }
 

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

@@ -1,556 +0,0 @@
-package com.avaje.ebean.config;
-
-import java.sql.Connection;
-import java.util.Map;
-import java.util.Properties;
-
-import com.avaje.ebean.Transaction;
-import com.avaje.ebean.util.StringHelper;
-
-/**
- * Used to config a DataSource when using the internal Ebean DataSource
- * implementation.
- * <p>
- * If a DataSource instance is already defined via
- * {@link ServerConfig#setDataSource(javax.sql.DataSource)} or defined as JNDI
- * dataSource via {@link ServerConfig#setDataSourceJndiName(String)} then those
- * will used and not this DataSourceConfig.
- * </p>
- */
-public class DataSourceConfig {
-
-  private String url;
-
-  private String username;
-
-  private String password;
-
-  private String driver;
-
-  private int minConnections = 2;
-
-  private int maxConnections = 20;
-
-  private int isolationLevel = Transaction.READ_COMMITTED;
-
-  private boolean autoCommit;
-  
-  private String heartbeatSql;
-  
-  private int heartbeatFreqSecs = 30;
-  
-  private int heartbeatTimeoutSeconds = 3;
-  
-  private boolean captureStackTrace;
-
-  private int maxStackTraceSize = 5;
-
-  private int leakTimeMinutes = 30;
-
-  private int maxInactiveTimeSecs = 720;
-  
-  private int maxAgeMinutes = 0;
-  
-  private int trimPoolFreqSecs = 59;
-
-  private int pstmtCacheSize = 20;
-  
-  private int cstmtCacheSize = 20;
-
-  private int waitTimeoutMillis = 1000;
-  
-  private String poolListener;
-
-  private boolean offline;
-  
-  protected Map<String, String> customProperties;
-
-  /**
-   * Return the connection URL.
-   */
-  public String getUrl() {
-    return url;
-  }
-
-  /**
-   * Set the connection URL.
-   */
-  public void setUrl(String url) {
-    this.url = url;
-  }
-
-  /**
-   * Return the database username.
-   */
-  public String getUsername() {
-    return username;
-  }
-
-  /**
-   * Set the database username.
-   */
-  public void setUsername(String username) {
-    this.username = username;
-  }
-
-  /**
-   * Return the database password.
-   */
-  public String getPassword() {
-    return password;
-  }
-
-  /**
-   * Set the database password.
-   */
-  public void setPassword(String password) {
-    this.password = password;
-  }
-
-  /**
-   * Return the database driver.
-   */
-  public String getDriver() {
-    return driver;
-  }
-
-  /**
-   * Set the database driver.
-   */
-  public void setDriver(String driver) {
-    this.driver = driver;
-  }
-
-  /**
-   * Return the transaction isolation level.
-   */
-  public int getIsolationLevel() {
-    return isolationLevel;
-  }
-
-  /**
-   * Set the transaction isolation level.
-   */
-  public void setIsolationLevel(int isolationLevel) {
-    this.isolationLevel = isolationLevel;
-  }
-  
-  /**
-   * Return autoCommit setting.
-   */
-  public boolean isAutoCommit() {
-    return autoCommit;
-  }
-
-  /**
-   * Set to true to turn on autoCommit.
-   */
-  public void setAutoCommit(boolean autoCommit) {
-    this.autoCommit = autoCommit;
-  }
-
-  /**
-   * Return the minimum number of connections the pool should maintain.
-   */
-  public int getMinConnections() {
-    return minConnections;
-  }
-
-  /**
-   * Set the minimum number of connections the pool should maintain.
-   */
-  public void setMinConnections(int minConnections) {
-    this.minConnections = minConnections;
-  }
-
-  /**
-   * Return the maximum number of connections the pool can reach.
-   */
-  public int getMaxConnections() {
-    return maxConnections;
-  }
-
-  /**
-   * Set the maximum number of connections the pool can reach.
-   */
-  public void setMaxConnections(int maxConnections) {
-    this.maxConnections = maxConnections;
-  }
-
-  /**
-   * Return a SQL statement used to test the database is accessible.
-   * <p>
-   * Note that if this is not set then it can get defaulted from the
-   * DatabasePlatform.
-   * </p>
-   */
-  public String getHeartbeatSql() {
-    return heartbeatSql;
-  }
-
-  /**
-   * Set a SQL statement used to test the database is accessible.
-   * <p>
-   * Note that if this is not set then it can get defaulted from the
-   * DatabasePlatform.
-   * </p>
-   */
-  public void setHeartbeatSql(String heartbeatSql) {
-    this.heartbeatSql = heartbeatSql;
-  }
-
-  
-  /**
-   * Return the heartbeat frequency in seconds.
-   * <p>
-   * This is the expected frequency in which the DataSource should be checked to
-   * make sure it is healthy and trim idle connections.
-   * </p>
-   */
-  public int getHeartbeatFreqSecs() {
-    return heartbeatFreqSecs;
-  }
-
-  /**
-   * Set the expected heartbeat frequency in seconds.
-   */
-  public void setHeartbeatFreqSecs(int heartbeatFreqSecs) {
-    this.heartbeatFreqSecs = heartbeatFreqSecs;
-  }
-  
-  /**
-   * Return the heart beat timeout in seconds.
-   */
-  public int getHeartbeatTimeoutSeconds() {
-    return heartbeatTimeoutSeconds;
-  }
-
-  /**
-   * Set the heart beat timeout in seconds.
-   */
-  public void setHeartbeatTimeoutSeconds(int heartbeatTimeoutSeconds) {
-    this.heartbeatTimeoutSeconds = heartbeatTimeoutSeconds;
-  }
-
-  /**
-   * Return true if a stack trace should be captured when obtaining a connection
-   * from the pool.
-   * <p>
-   * This can be used to diagnose a suspected connection pool leak.
-   * </p>
-   * <p>
-   * Obviously this has a performance overhead.
-   * </p>
-   */
-  public boolean isCaptureStackTrace() {
-    return captureStackTrace;
-  }
-
-  /**
-   * Set to true if a stack trace should be captured when obtaining a connection
-   * from the pool.
-   * <p>
-   * This can be used to diagnose a suspected connection pool leak.
-   * </p>
-   * <p>
-   * Obviously this has a performance overhead.
-   * </p>
-   */
-  public void setCaptureStackTrace(boolean captureStackTrace) {
-    this.captureStackTrace = captureStackTrace;
-  }
-
-  /**
-   * Return the max size for reporting stack traces on busy connections.
-   */
-  public int getMaxStackTraceSize() {
-    return maxStackTraceSize;
-  }
-
-  /**
-   * Set the max size for reporting stack traces on busy connections.
-   */
-  public void setMaxStackTraceSize(int maxStackTraceSize) {
-    this.maxStackTraceSize = maxStackTraceSize;
-  }
-
-  /**
-   * Return the time in minutes after which a connection could be considered to
-   * have leaked.
-   */
-  public int getLeakTimeMinutes() {
-    return leakTimeMinutes;
-  }
-
-  /**
-   * Set the time in minutes after which a connection could be considered to
-   * have leaked.
-   */
-  public void setLeakTimeMinutes(int leakTimeMinutes) {
-    this.leakTimeMinutes = leakTimeMinutes;
-  }
-
-  /**
-   * Return the size of the PreparedStatement cache (per connection).
-   */
-  public int getPstmtCacheSize() {
-    return pstmtCacheSize;
-  }
-
-  /**
-   * Set the size of the PreparedStatement cache (per connection).
-   */
-  public void setPstmtCacheSize(int pstmtCacheSize) {
-    this.pstmtCacheSize = pstmtCacheSize;
-  }
-
-  /**
-   * Return the size of the CallableStatement cache (per connection).
-   */
-  public int getCstmtCacheSize() {
-    return cstmtCacheSize;
-  }
-
-  /**
-   * Set the size of the CallableStatement cache (per connection).
-   */
-  public void setCstmtCacheSize(int cstmtCacheSize) {
-    this.cstmtCacheSize = cstmtCacheSize;
-  }
-
-  /**
-   * Return the time in millis to wait for a connection before timing out once
-   * the pool has reached its maximum size.
-   */
-  public int getWaitTimeoutMillis() {
-    return waitTimeoutMillis;
-  }
-
-  /**
-   * Set the time in millis to wait for a connection before timing out once the
-   * pool has reached its maximum size.
-   */
-  public void setWaitTimeoutMillis(int waitTimeoutMillis) {
-    this.waitTimeoutMillis = waitTimeoutMillis;
-  }
-
-  /**
-   * Return the time in seconds a connection can be idle after which it can be
-   * trimmed from the pool.
-   * <p>
-   * This is so that the pool after a busy period can trend over time back
-   * towards the minimum connections.
-   * </p>
-   */
-  public int getMaxInactiveTimeSecs() {
-    return maxInactiveTimeSecs;
-  }
-
-  /**
-   * Return the maximum age a connection is allowed to be before it is closed.
-   * <p>
-   * This can be used to close really old connections.
-   * </p>
-   */
-  public int getMaxAgeMinutes() {
-    return maxAgeMinutes;
-  }
-  
-  /**
-   * Set the maximum age a connection can be in minutes.
-   */
-  public void setMaxAgeMinutes(int maxAgeMinutes) {
-    this.maxAgeMinutes = maxAgeMinutes;
-  }
-
-  /**
-   * Set the time in seconds a connection can be idle after which it can be
-   * trimmed from the pool.
-   * <p>
-   * This is so that the pool after a busy period can trend over time back
-   * towards the minimum connections.
-   * </p>
-   */
-  public void setMaxInactiveTimeSecs(int maxInactiveTimeSecs) {
-    this.maxInactiveTimeSecs = maxInactiveTimeSecs;
-  }
-
-  
-  /**
-   * Return the minimum time gap between pool trim checks.
-   * <p>
-   * This defaults to 59 seconds meaning that the pool trim check will run every
-   * minute assuming the heart beat check runs every 30 seconds.
-   * </p>
-   */
-  public int getTrimPoolFreqSecs() {
-    return trimPoolFreqSecs;
-  }
-
-  /**
-   * Set the minimum trim gap between pool trim checks.
-   */
-  public void setTrimPoolFreqSecs(int trimPoolFreqSecs) {
-    this.trimPoolFreqSecs = trimPoolFreqSecs;
-  }
-
-  /**
-   * Return the pool listener.
-   */
-  public String getPoolListener() {
-    return poolListener;
-  }
-
-  /**
-   * Set a pool listener.
-   */
-  public void setPoolListener(String poolListener) {
-    this.poolListener = poolListener;
-  }
-
-  /**
-   * Return true if the DataSource should be left offline.
-   * <p>
-   * This is to support DDL generation etc without having a real database.
-   * </p>
-   */
-  public boolean isOffline() {
-    return offline;
-  }
-
-  /**
-   * Set to true if the DataSource should be left offline.
-   * <p>
-   * This is to support DDL generation etc without having a real database.
-   * </p>
-   * <p>
-   * Note that you MUST specify the database platform name (oracle, postgres,
-   * h2, mysql etc) using {@link ServerConfig#setDatabasePlatformName(String)}
-   * when you do this.
-   * </p>
-   */
-  public void setOffline(boolean offline) {
-    this.offline = offline;
-  }
-  
-  /**
-   * Return a map of custom properties for the jdbc driver connection.
-   */
-  public Map<String, String> getCustomProperties() {
-    return customProperties;
-  }
-
-  /**
-   * Set custom properties for the jdbc driver connection.
-   * 
-   * @param customProperties
-   */
-  public void setCustomProperties(Map<String, String> customProperties) {
-    this.customProperties = customProperties;
-  }
-
-  /**
-   * Load the settings by reading the ebean.properties file.
-   *
-   * @param serverName name of the server
-   */
-  public void loadSettings(String serverName) {
-    loadSettings(new PropertiesWrapper("datasource", serverName, PropertyMap.defaultProperties()));
-  }
-
-  /**
-   * Load the settings from the properties supplied.
-   * <p>
-   * You can use this when you have your own properties to use for configuration.
-   * </p>
-   *
-   * @param properties the properties to configure the datasource
-   * @param serverName the name of the specific datasource (optional)
-   */
-  public void loadSettings(Properties properties, String serverName) {
-    PropertiesWrapper dbProps = new PropertiesWrapper("datasource", serverName, properties);
-    loadSettings(dbProps);
-  }
-
-  /**
-   * Load the settings from the PropertiesWrapper.
-   */
-  public void loadSettings(PropertiesWrapper properties) {
-
-    username = properties.get("username", username);
-    password = properties.get("password", password);
-    driver = properties.get("driver", properties.get("databaseDriver", driver));
-    url = properties.get("url", properties.get("databaseUrl", url));
-
-    autoCommit = properties.getBoolean("autoCommit", autoCommit);
-    captureStackTrace = properties.getBoolean("captureStackTrace", captureStackTrace);
-    maxStackTraceSize = properties.getInt("maxStackTraceSize", maxStackTraceSize);
-    leakTimeMinutes = properties.getInt("leakTimeMinutes", leakTimeMinutes);
-    maxInactiveTimeSecs = properties.getInt("maxInactiveTimeSecs", maxInactiveTimeSecs);
-    trimPoolFreqSecs = properties.getInt("trimPoolFreqSecs", trimPoolFreqSecs);
-    maxAgeMinutes = properties.getInt("maxAgeMinutes", maxAgeMinutes);
-
-    minConnections = properties.getInt("minConnections", minConnections);
-    maxConnections = properties.getInt("maxConnections", maxConnections);
-    pstmtCacheSize = properties.getInt("pstmtCacheSize", pstmtCacheSize);
-    cstmtCacheSize = properties.getInt("cstmtCacheSize", cstmtCacheSize);
-
-    waitTimeoutMillis = properties.getInt("waitTimeout", waitTimeoutMillis);
-
-    heartbeatSql = properties.get("heartbeatSql", heartbeatSql);
-    heartbeatTimeoutSeconds =  properties.getInt("heartbeatTimeoutSeconds", heartbeatTimeoutSeconds);
-    poolListener = properties.get("poolListener", poolListener);
-    offline = properties.getBoolean("offline", offline);
-
-    String isoLevel = properties.get("isolationlevel", getTransactionIsolationLevel(isolationLevel));
-    this.isolationLevel = getTransactionIsolationLevel(isoLevel);
-
-    String customProperties = properties.get("customProperties", null);
-    if (customProperties != null && customProperties.length() > 0) {
-      this.customProperties = StringHelper.delimitedToMap(customProperties, ";", "=");
-    }
-
-  }
-
-  /**
-   * Return the isolation level description from the associated Connection int value.
-   */
-  public String getTransactionIsolationLevel(int level) {
-    switch (level) {
-      case Connection.TRANSACTION_NONE : return "NONE";
-      case Connection.TRANSACTION_READ_COMMITTED : return "READ_COMMITTED";
-      case Connection.TRANSACTION_READ_UNCOMMITTED : return "READ_UNCOMMITTED";
-      case Connection.TRANSACTION_REPEATABLE_READ : return "REPEATABLE_READ";
-      case Connection.TRANSACTION_SERIALIZABLE : return "SERIALIZABLE";
-      default: throw new RuntimeException("Transaction Isolation level [" + level + "] is not known.");
-    }
-  }
-
-  /**
-   * Return the isolation level for a given string description.
-   */
-  public int getTransactionIsolationLevel(String level) {
-    level = level.toUpperCase();
-    if (level.startsWith("TRANSACTION")) {
-      level = level.substring("TRANSACTION".length());
-    }
-    level = level.replace("_", "");
-    if ("NONE".equalsIgnoreCase(level)) {
-      return Connection.TRANSACTION_NONE;
-    }
-    if ("READCOMMITTED".equalsIgnoreCase(level)) {
-      return Connection.TRANSACTION_READ_COMMITTED;
-    }
-    if ("READUNCOMMITTED".equalsIgnoreCase(level)) {
-      return Connection.TRANSACTION_READ_UNCOMMITTED;
-    }
-    if ("REPEATABLEREAD".equalsIgnoreCase(level)) {
-      return Connection.TRANSACTION_REPEATABLE_READ;
-    }
-    if ("SERIALIZABLE".equalsIgnoreCase(level)) {
-      return Connection.TRANSACTION_SERIALIZABLE;
-    }
-
-    throw new RuntimeException("Transaction Isolation level [" + level + "] is not known.");
-  }
-}

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

@@ -23,11 +23,6 @@ public class DbMigrationConfig {
    */
   protected boolean generate;
 
-  /**
-   * Set to true to suppress the output of the rollback script.
-   */
-  protected boolean suppressRollback;
-
   /**
    * The migration version name (typically FlywayDb compatible).
    * <p>
@@ -61,33 +56,17 @@ public class DbMigrationConfig {
    */
   protected String modelPath = "model";
 
-  /**
-   * Subdirectory the drop ddl scripts go into.
-   */
-  protected String dropPath = "drop";
-
-  /**
-   * Subdirectory the rollback ddl scripts go into.
-   */
-  protected String rollbackPath = "rollback";
-
-  /**
-   * Apply script suffix.
-   */
   protected String applySuffix = ".sql";
 
-  /**
-   * Default drop script suffix to ddl so that it isn't picked up by FlywayDb.
-   */
-  protected String dropSuffix = ".drop.ddl";
-
-  /**
-   * Default rollback script suffix to ddl so that it isn't picked up by FlywayDb.
-   */
-  protected String rollbackSuffix = ".rollback.ddl";
-
   protected String modelSuffix = ".model.xml";
 
+  protected boolean includeGeneratedFileComment;
+
+  /**
+   * The version of a pending drop that should be generated as the next migration.
+   */
+  protected String generatePendingDrop;
+
   /**
    * Return the DB platform to generate migration DDL for.
    *
@@ -138,34 +117,6 @@ public class DbMigrationConfig {
     this.modelPath = modelPath;
   }
 
-  /**
-   * Return the relative path for the drop ddl scripts (defaults to drop).
-   */
-  public String getDropPath() {
-    return dropPath;
-  }
-
-  /**
-   * Set the relative path for the drop ddl scripts (defaults to drop).
-   */
-  public void setDropPath(String dropPath) {
-    this.dropPath = dropPath;
-  }
-
-  /**
-   * Return the relative path for the rollback ddl scripts (defaults to rollback).
-   */
-  public String getRollbackPath() {
-    return rollbackPath;
-  }
-
-  /**
-   * Set the relative path for the rollback ddl scripts (defaults to rollback).
-   */
-  public void setRollbackPath(String rollbackPath) {
-    this.rollbackPath = rollbackPath;
-  }
-
   /**
    * Return the model suffix (defaults to model.xml)
    */
@@ -180,20 +131,6 @@ public class DbMigrationConfig {
     this.modelSuffix = modelSuffix;
   }
 
-  /**
-   * Return true if the rollback script should not be output.
-   */
-  public boolean isSuppressRollback() {
-    return suppressRollback;
-  }
-
-  /**
-   * Set to true to suppress the output of the rollback script.
-   */
-  public void setSuppressRollback(boolean suppressRollback) {
-    this.suppressRollback = suppressRollback;
-  }
-
   /**
    * Return the apply script suffix (defaults to sql).
    */
@@ -209,31 +146,31 @@ public class DbMigrationConfig {
   }
 
   /**
-   * Return the drop script suffix (defaults to ddl so that it isn't picked up by FlywayDb).
+   * Return true if the generated file comment should be included.
    */
-  public String getDropSuffix() {
-    return dropSuffix;
+  public boolean isIncludeGeneratedFileComment() {
+    return includeGeneratedFileComment;
   }
 
   /**
-   * Set the drop script suffix (defaults to ddl so that it isn't picked up by FlywayDb).
+   * Set to true if the generated file comment should be included.
    */
-  public void setDropSuffix(String dropSuffix) {
-    this.dropSuffix = dropSuffix;
+  public void setIncludeGeneratedFileComment(boolean includeGeneratedFileComment) {
+    this.includeGeneratedFileComment = includeGeneratedFileComment;
   }
 
   /**
-   * Return the rollback script suffix (defaults to ddl so that it isn't picked up by FlywayDb).
+   * Return the migration version (or "next") to generate pending drops for.
    */
-  public String getRollbackSuffix() {
-    return rollbackSuffix;
+  public String getGeneratePendingDrop() {
+    return generatePendingDrop;
   }
 
   /**
-   * Set the rollback script suffix (defaults to ddl so that it isn't picked up by FlywayDb).
+   * Set the migration version (or "next") to generate pending drops for.
    */
-  public void setRollbackSuffix(String rollbackSuffix) {
-    this.rollbackSuffix = rollbackSuffix;
+  public void setGeneratePendingDrop(String generatePendingDrop) {
+    this.generatePendingDrop = generatePendingDrop;
   }
 
   /**
@@ -259,8 +196,6 @@ public class DbMigrationConfig {
    * into a single directory.
    */
   public void singleDirectory() {
-    this.dropPath = "";
-    this.rollbackPath = "";
     this.modelPath = "";
   }
 
@@ -274,16 +209,13 @@ public class DbMigrationConfig {
       singleDirectory();
     } else {
       modelPath = properties.get("migration.modelPath", modelPath);
-      rollbackPath = properties.get("migration.rollbackPath", rollbackPath);
-      dropPath = properties.get("migration.dropPath", dropPath);
     }
     applySuffix = properties.get("migration.applySuffix", applySuffix);
-    dropSuffix = properties.get("migration.dropSuffix", dropSuffix);
-    rollbackSuffix = properties.get("migration.rollbackSuffix", rollbackSuffix);
     modelSuffix = properties.get("migration.modelSuffix", modelSuffix);
+    includeGeneratedFileComment = properties.getBoolean("migration.includeGeneratedFileComment", includeGeneratedFileComment);
+    generatePendingDrop = properties.get("migration.generatePendingDrop", generatePendingDrop);
 
     platform = properties.getEnum(DbPlatformName.class, "migration.platform", platform);
-    suppressRollback = properties.getBoolean("migration.suppressRollback", suppressRollback);
 
     generate = properties.getBoolean("migration.generate", generate);
     version = properties.get("migration.version", version);
@@ -307,7 +239,6 @@ public class DbMigrationConfig {
     return generate;
   }
 
-
   /**
    * Called by EbeanServer on start.
    *

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

@@ -0,0 +1,248 @@
+package com.avaje.ebean.config;
+
+import com.avaje.ebean.annotation.DocStoreMode;
+
+/**
+ * Configuration for the Document store integration (e.g. ElasticSearch).
+ */
+public class DocStoreConfig {
+
+  /**
+   * True when the Document store integration is active/on.
+   */
+  protected boolean active;
+
+  /**
+   * Set to true means Ebean will generate mapping files on startup.
+   */
+  protected boolean generateMapping;
+
+  /**
+   * When true the Document store should drop and re-create document indexes.
+   */
+  protected boolean dropCreate;
+
+  /**
+   * When true the Document store should create any document indexes that don't already exist.
+   */
+  protected boolean create;
+
+  /**
+   * The URL of the Document store server. For example: http://localhost:9200.
+   */
+  protected String url;
+
+  /**
+   * The default mode used by indexes.
+   */
+  protected DocStoreMode persist = DocStoreMode.UPDATE;
+
+  /**
+   * The default batch size to use for the Bulk API calls.
+   */
+  protected int bulkBatchSize = 1000;
+
+  /**
+   * Resource path for the Document store mapping files.
+   */
+  protected String mappingPath;
+
+  /**
+   * Suffix used for mapping files.
+   */
+  protected String mappingSuffix;
+
+  /**
+   * Location of resources that mapping files are generated into.
+   */
+  protected String pathToResources = "src/main/resources";
+
+  /**
+   * Return true if the Document store (ElasticSearch) integration is active.
+   */
+  public boolean isActive() {
+    String systemValue = System.getProperty("ebean.docstore.active");
+    if (systemValue != null) {
+      return Boolean.parseBoolean(systemValue);
+    }
+    return active;
+  }
+
+  /**
+   * Set to true to make the Document store (ElasticSearch) integration active.
+   */
+  public void setActive(boolean active) {
+    this.active = active;
+  }
+
+  /**
+   * Return the URL to the Document store.
+   */
+  public String getUrl() {
+    String systemValue = System.getProperty("ebean.docstore.url");
+    if (systemValue != null) {
+      return systemValue;
+    }
+
+    return url;
+  }
+
+  /**
+   * Set the URL to the Document store server.
+   * <p>
+   * For a local ElasticSearch server this would be: http://localhost:9200
+   */
+  public void setUrl(String url) {
+    this.url = url;
+  }
+
+  /**
+   * Return true if Ebean should generate mapping files on server startup.
+   */
+  public boolean isGenerateMapping() {
+    return generateMapping;
+  }
+
+  /**
+   * Set to true if Ebean should generate mapping files on server startup.
+   */
+  public void setGenerateMapping(boolean generateMapping) {
+    this.generateMapping = generateMapping;
+  }
+
+  /**
+   * Return true if the document store should recreate mapped indexes.
+   */
+  public boolean isDropCreate() {
+    return dropCreate;
+  }
+
+  /**
+   * Set to true if the document store should recreate mapped indexes.
+   */
+  public void setDropCreate(boolean dropCreate) {
+    this.dropCreate = dropCreate;
+  }
+
+  /**
+   * Create true if the document store should create mapped indexes that don't yet exist.
+   * This is only used if dropCreate is false.
+   */
+  public boolean isCreate() {
+    return create;
+  }
+
+  /**
+   * Set to true if the document store should create mapped indexes that don't yet exist.
+   * This is only used if dropCreate is false.
+   */
+  public void setCreate(boolean create) {
+    this.create = create;
+  }
+
+  /**
+   * Return the default batch size to use for calls to the Bulk API.
+   */
+  public int getBulkBatchSize() {
+    return bulkBatchSize;
+  }
+
+  /**
+   * Set the default batch size to use for calls to the Bulk API.
+   * <p>
+   * The batch size can be set on a transaction via {@link com.avaje.ebean.Transaction#setDocStoreBatchSize(int)}.
+   * </p>
+   */
+  public void setBulkBatchSize(int bulkBatchSize) {
+    this.bulkBatchSize = bulkBatchSize;
+  }
+
+  /**
+   * Return the mapping path.
+   */
+  public String getMappingPath() {
+    return mappingPath;
+  }
+
+  /**
+   * Set the mapping path.
+   */
+  public void setMappingPath(String mappingPath) {
+    this.mappingPath = mappingPath;
+  }
+
+  /**
+   * Return the mapping suffix.
+   */
+  public String getMappingSuffix() {
+    return mappingSuffix;
+  }
+
+  /**
+   * Set the mapping suffix.
+   */
+  public void setMappingSuffix(String mappingSuffix) {
+    this.mappingSuffix = mappingSuffix;
+  }
+
+  /**
+   * Return the relative file system path to resources when generating mapping files.
+   */
+  public String getPathToResources() {
+    return pathToResources;
+  }
+
+  /**
+   * Set the relative file system path to resources when generating mapping files.
+   */
+  public void setPathToResources(String pathToResources) {
+    this.pathToResources = pathToResources;
+  }
+
+  /**
+   * Return the default behavior for when Insert, Update and Delete events occur on beans that have an associated
+   * Document store.
+   */
+  public DocStoreMode getPersist() {
+    return persist;
+  }
+
+  /**
+   * Set the default behavior for when Insert, Update and Delete events occur on beans that have an associated
+   * Document store.
+   * <ul>
+   * <li>DocStoreEvent.UPDATE - build and send message to Bulk API</li>
+   * <li>DocStoreEvent.QUEUE - add an entry with the index type and id only into a queue for later processing</li>
+   * <li>DocStoreEvent.IGNORE - ignore. Most likely used when some scheduled batch job handles updating the index</li>
+   * </ul>
+   * <p>
+   * You might choose to use QUEUE if that particular index data is updating very frequently or the cost of indexing
+   * is expensive.  Setting it to QUEUE can mean many changes can be batched together potentially coalescing multiple
+   * updates for an index entry into a single update.
+   * </p>
+   * <p>
+   * You might choose to use IGNORE when you have your own external process for updating the indexes. In this case
+   * you don't want Ebean to do anything when the data changes.
+   * </p>
+   */
+  public void setPersist(DocStoreMode persist) {
+    this.persist = persist;
+  }
+
+  /**
+   * Load settings specified in properties files.
+   */
+  public void loadSettings(PropertiesWrapper properties) {
+
+    active = properties.getBoolean("docstore.active", active);
+    url = properties.get("docstore.url", url);
+    persist = properties.getEnum(DocStoreMode.class, "docstore.persist", persist);
+    bulkBatchSize = properties.getInt("docstore.bulkBatchSize", bulkBatchSize);
+    generateMapping = properties.getBoolean("docstore.generateMapping", generateMapping);
+    dropCreate = properties.getBoolean("docstore.dropCreate", dropCreate);
+    create = properties.getBoolean("docstore.create", create);
+    mappingPath = properties.get("docstore.mappingPath", mappingPath);
+    mappingSuffix = properties.get("docstore.mappingSuffix", mappingSuffix);
+    pathToResources = properties.get("docstore.pathToResources", pathToResources);
+  }
+}

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

@@ -22,11 +22,14 @@ import com.avaje.ebean.event.readaudit.ReadAuditLogger;
 import com.avaje.ebean.event.readaudit.ReadAuditPrepare;
 import com.avaje.ebean.meta.MetaInfoManager;
 import com.fasterxml.jackson.core.JsonFactory;
+import org.avaje.datasource.DataSourceConfig;
 
 import javax.sql.DataSource;
 import java.util.ArrayList;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Properties;
+import java.util.ServiceLoader;
 
 /**
  * The configuration used for creating a EbeanServer.
@@ -129,6 +132,11 @@ public class ServerConfig {
    */
   private String classPathReaderClassName;
 
+  /**
+   * Configuration for the ElasticSearch integration.
+   */
+  private DocStoreConfig docStoreConfig = new DocStoreConfig();
+
   /**
    * This is used to populate @WhoCreated, @WhoModified and
    * support other audit features (who executed a query etc).
@@ -283,7 +291,7 @@ public class ServerConfig {
   private DbConstraintNaming constraintNaming = new DbConstraintNaming();
 
   /** 
-   * Behaviour of update to include on the change properties. 
+   * Behaviour of update to include on the change properties.
    */
   private boolean updateChangesOnly = true;
 
@@ -387,6 +395,8 @@ public class ServerConfig {
    */
   private boolean expressionEqualsWithNullAsNoop;
 
+  private String jodaLocalTimeMode;
+
   /**
    * Construct a Server Configuration for programmatically creating an EbeanServer.
    */
@@ -1151,6 +1161,20 @@ public class ServerConfig {
     this.namingConvention = namingConvention;
   }
 
+  /**
+   * Return the configuration for the ElasticSearch integration.
+   */
+  public DocStoreConfig getDocStoreConfig() {
+    return docStoreConfig;
+  }
+
+  /**
+   * Set the configuration for the ElasticSearch integration.
+   */
+  public void setDocStoreConfig(DocStoreConfig docStoreConfig) {
+    this.docStoreConfig = docStoreConfig;
+  }
+
   /**
    * Return the constraint naming convention used in DDL generation.
    */
@@ -1368,8 +1392,6 @@ public class ServerConfig {
    * <p>
    * Values are oracle, h2, postgres, mysql, mssqlserver2005.
    * </p>
-   * 
-   * @see DataSourceConfig#setOffline(boolean)
    */
   public void setDatabasePlatformName(String databasePlatformName) {
     this.databasePlatformName = databasePlatformName;
@@ -1640,6 +1662,20 @@ public class ServerConfig {
     this.disableClasspathSearch = disableClasspathSearch;
   }
 
+  /**
+   * Return the mode to use for Joda LocalTime support 'normal' or 'utc'.
+   */
+  public String getJodaLocalTimeMode() {
+    return jodaLocalTimeMode;
+  }
+
+  /**
+   * Set the mode to use for Joda LocalTime support 'normal' or 'utc'.
+   */
+  public void setJodaLocalTimeMode(String jodaLocalTimeMode) {
+    this.jodaLocalTimeMode = jodaLocalTimeMode;
+  }
+
   /**
    * Programmatically add classes (typically entities) that this server should
    * use.
@@ -2118,6 +2154,23 @@ public class ServerConfig {
     this.classLoadConfig = classLoadConfig;
   }
 
+  /**
+   * Return the service loader using the classLoader defined in ClassLoadConfig.
+   */
+  public <T> ServiceLoader<T> serviceLoad(Class<T> spiService) {
+
+    return ServiceLoader.load(spiService, classLoadConfig.getClassLoader());
+  }
+
+  /**
+   * Return the first service using the service loader (or null).
+   */
+  public <T> T service(Class<T> spiService) {
+    ServiceLoader<T> load = serviceLoad(spiService);
+    Iterator<T> serviceInstances = load.iterator();
+    return serviceInstances.hasNext() ? serviceInstances.next() : null;
+  }
+
   /**
    * Load settings from ebean.properties.
    */
@@ -2192,11 +2245,18 @@ public class ServerConfig {
    * @param p - The defined property source passed to load settings
    */
   protected void loadDataSourceSettings(PropertiesWrapper p) {
-    dataSourceConfig.loadSettings(p.withPrefix("datasource"));
+    dataSourceConfig.loadSettings(p.properties, name);
   }
 
   /**
-   * This is broken out for the same reason as above - preserve existing behaviour but let it be overridden.
+   * This is broken out to allow overridden behaviour.
+   */
+  protected void loadDocStoreSettings(PropertiesWrapper p) {
+    docStoreConfig.loadSettings(p);
+  }
+
+  /**
+   * This is broken out to allow overridden behaviour.
    */
   protected void loadAutoTuneSettings(PropertiesWrapper p) {
     autoTuneConfig.loadSettings(p);
@@ -2223,6 +2283,11 @@ public class ServerConfig {
     }
     loadDataSourceSettings(p);
 
+    if (docStoreConfig == null) {
+      docStoreConfig = new DocStoreConfig();
+    }
+    loadDocStoreSettings(p);
+
     explicitTransactionBeginMode = p.getBoolean("explicitTransactionBeginMode", explicitTransactionBeginMode);
     autoCommitMode = p.getBoolean("autoCommitMode", autoCommitMode);
     useJtaTransactionManager = p.getBoolean("useJtaTransactionManager", useJtaTransactionManager);
@@ -2286,6 +2351,7 @@ public class ServerConfig {
       dbUuid = DbUuid.BINARY;
     }
     localTimeWithNanos = p.getBoolean("localTimeWithNanos", localTimeWithNanos);
+    jodaLocalTimeMode = p.get("jodaLocalTimeMode", jodaLocalTimeMode);
 
     lazyLoadBatchSize = p.getInt("lazyLoadBatchSize", lazyLoadBatchSize);
     queryBatchSize = p.getInt("queryBatchSize", queryBatchSize);

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

@@ -1,5 +1,7 @@
 package com.avaje.ebean.config;
 
+import com.avaje.ebean.util.CamelCaseHelper;
+
 /**
  * Converts between Camel Case and Underscore based names for both table and
  * column names (and is the default naming convention in Ebean).
@@ -141,21 +143,6 @@ public class UnderscoreNamingConvention extends AbstractNamingConvention {
    * Convert and return the from string from underscore to camel case.
    */
   protected String toCamelFromUnderscore(String underscore) {
-
-    StringBuilder result = new StringBuilder(underscore.length());
-    String[] vals = underscore.split("_");
-
-    for (int i = 0; i < vals.length; i++) {
-      String lower = vals[i].toLowerCase();
-      if (i > 0) {
-        char c = Character.toUpperCase(lower.charAt(0));
-        result.append(c);
-        result.append(lower.substring(1));
-      } else {
-        result.append(lower);
-      }
-    }
-
-    return result.toString();
+    return CamelCaseHelper.toCamelFromUnderscore(underscore);
   }
 }

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

@@ -18,7 +18,7 @@ public class DB2Platform extends DatabasePlatform {
     this.maxTableNameLength = 18;
     this.maxConstraintNameLength = 18;
     this.sqlLimiter = new Db2SqlLimiter();
-    this.platformDdl = new DB2Ddl(dbTypeMap, dbIdentity);
+    this.platformDdl = new DB2Ddl(this);
 
     this.dbIdentity.setSupportsGetGeneratedKeys(true);
     this.dbIdentity.setSupportsSequence(true);

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

@@ -18,7 +18,6 @@ public class DatabasePlatform {
 
   private static final Logger logger = LoggerFactory.getLogger(DatabasePlatform.class);
 
-
   /**
    * Behavior used when ending a query only transaction (at read committed isolation level).
    */
@@ -72,6 +71,11 @@ public class DatabasePlatform {
    */
   protected DbTypeMap dbTypeMap = new DbTypeMap();
 
+  /**
+   * Default values for DB columns.
+   */
+  protected DbDefaultValue dbDefaultValue = new DbDefaultValue();
+
   /**
    * Set to true if the DB has native UUID type support.
    */
@@ -291,6 +295,13 @@ public class DatabasePlatform {
     return dbTypeMap;
   }
 
+  /**
+   * Return the mapping for DB column default values.
+   */
+  public DbDefaultValue getDbDefaultValue() {
+    return dbDefaultValue;
+  }
+
   /**
    * Return the column alias prefix.
    */
@@ -425,6 +436,20 @@ public class DatabasePlatform {
     return sqlLimiter;
   }
 
+  /**
+   * Set the DB TRUE literal (from the registered boolean ScalarType)
+   */
+  public void setDbTrueLiteral(String dbTrueLiteral) {
+    this.dbDefaultValue.setTrue(dbTrueLiteral);
+  }
+
+  /**
+   * Set the DB FALSE literal (from the registered boolean ScalarType)
+   */
+  public void setDbFalseLiteral(String dbFalseLiteral) {
+    this.dbDefaultValue.setFalse(dbFalseLiteral);
+  }
+
   /**
    * Convert backticks to the platform specific open quote and close quote
    * <p>

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

@@ -0,0 +1,70 @@
+package com.avaje.ebean.config.dbplatform;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+/**
+ * DB Column default values mapping to database platform specific literals.
+ */
+public class DbDefaultValue {
+
+  /**
+   * The key for FALSE.
+   */
+  public static final String FALSE = "false";
+
+  /**
+   * The key for TRUE.
+   */
+  public static final String TRUE = "true";
+
+  /**
+   * The key for the NOW / current timestamp.
+   */
+  public static final String NOW = "now";
+
+  protected Map<String,String> map = new LinkedHashMap<String,String>();
+
+  /**
+   * Set the DB now function.
+   */
+  public void setNow(String dbFunction) {
+    put(NOW, dbFunction);
+  }
+
+  /**
+   * Set the DB false literal.
+   */
+  public void setFalse(String dbFalseLiteral) {
+    put(FALSE, dbFalseLiteral);
+  }
+
+  /**
+   * Set the DB true literal.
+   */
+  public void setTrue(String dbTrueLiteral) {
+    put(TRUE, dbTrueLiteral);
+  }
+
+  /**
+   * Add an translation entry.
+   */
+  public void put(String dbLiteral, String dbTranslated) {
+    map.put(dbLiteral, dbTranslated);
+  }
+
+  /**
+   * Convert the DB default literal to platform specific type or function.
+   * <p>
+   * This is intended for the DB column default clause in DDL.
+   * </p>
+   */
+  public String convert(String dbDefaultLiteral) {
+    if (dbDefaultLiteral == null) {
+      return null;
+    }
+    String val = map.get(dbDefaultLiteral);
+    return val != null ? val : dbDefaultLiteral;
+  }
+
+}

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

@@ -14,9 +14,10 @@ public class H2Platform extends DatabasePlatform {
     super();
     this.name = "h2";
     this.dbEncrypt = new H2DbEncrypt();
-    this.platformDdl = new H2Ddl(this.dbTypeMap, dbIdentity);
+    this.platformDdl = new H2Ddl(this);
     this.historySupport = new H2HistorySupport();
     this.nativeUuidType = true;
+    this.dbDefaultValue.setNow("now()");
 
     // only support getGeneratedKeys with non-batch JDBC
     // so generally use SEQUENCE instead of IDENTITY for H2

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

@@ -15,7 +15,7 @@ public class HsqldbPlatform extends DatabasePlatform {
     super();
     this.name = "hsqldb";
     this.dbEncrypt = new H2DbEncrypt();
-    this.platformDdl = new HsqldbDdl(dbTypeMap, dbIdentity);
+    this.platformDdl = new HsqldbDdl(this);
 
     this.dbIdentity.setIdType(IdType.IDENTITY);
     this.dbIdentity.setSupportsGetGeneratedKeys(true);

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

@@ -25,7 +25,7 @@ public class MsSqlServer2005Platform extends DatabasePlatform {
     this.idInExpandedForm = true;
     this.selectCountWithAlias = true;
     this.sqlLimiter = new MsSqlServer2005SqlLimiter();
-    this.platformDdl = new MsSqlServerDdl(dbTypeMap, dbIdentity);
+    this.platformDdl = new MsSqlServerDdl(this);
     this.dbIdentity.setIdType(IdType.IDENTITY);
     this.dbIdentity.setSupportsGetGeneratedKeys(true);
     this.dbIdentity.setSupportsIdentity(true);

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

@@ -25,7 +25,7 @@ public class MySqlPlatform extends DatabasePlatform {
     this.likeClause = "like ? escape''";
     this.selectCountWithAlias = true;
     this.dbEncrypt = new MySqlDbEncrypt();
-    this.platformDdl = new MySqlDdl(this.dbTypeMap, this.dbIdentity);
+    this.platformDdl = new MySqlDdl(this);
     this.historySupport = new MySqlHistorySupport();
 
     this.dbIdentity.setIdType(IdType.IDENTITY);

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

@@ -16,11 +16,9 @@ public class OraclePlatform extends DatabasePlatform {
     this.name = "oracle";
     this.maxTableNameLength = 30;
     this.maxConstraintNameLength = 30;
-    // OnQueryOnly.CLOSE as a performance optimisation on Oracle
-    this.onQueryOnly = OnQueryOnly.CLOSE;
     this.dbEncrypt = new OracleDbEncrypt();
     this.sqlLimiter = new RownumSqlLimiter();
-    this.platformDdl = new Oracle10Ddl(this.dbTypeMap, this.dbIdentity);
+    this.platformDdl = new Oracle10Ddl(this);
     this.historySupport = new OracleDbHistorySupport();
 
     // Not using getGeneratedKeys as instead we will

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

@@ -19,9 +19,6 @@ public class PostgresPlatform extends DatabasePlatform {
   public PostgresPlatform() {
     super();
     this.name = "postgres";
-
-    // OnQueryOnly.CLOSE as a performance optimisation on Postgres
-    this.onQueryOnly = OnQueryOnly.CLOSE;
     this.likeClause = "like ? escape''";
     this.selectCountWithAlias = true;
     this.blobDbType = Types.LONGVARBINARY;
@@ -30,7 +27,7 @@ public class PostgresPlatform extends DatabasePlatform {
 
     this.dbEncrypt = new PostgresDbEncrypt();
     this.historySupport = new PostgresHistorySupport();
-    this.platformDdl = new PostgresDdl(this.dbTypeMap, this.dbIdentity);
+    this.platformDdl = new PostgresDdl(this);
 
     // Use Identity and getGeneratedKeys
     this.dbIdentity.setIdType(IdType.IDENTITY);

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

@@ -9,7 +9,7 @@ public class SQLitePlatform extends DatabasePlatform {
   public SQLitePlatform() {
     super();
     this.name = "sqlite";
-    this.platformDdl = new SQLiteDdl(dbTypeMap, dbIdentity);
+    this.platformDdl = new SQLiteDdl(this);
 
     this.dbIdentity.setIdType(IdType.IDENTITY);
     this.dbIdentity.setSupportsGetGeneratedKeys(false);

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

@@ -20,6 +20,7 @@ import com.avaje.ebean.dbmigration.migrationreader.MigrationXmlWriter;
 import com.avaje.ebean.dbmigration.model.CurrentModel;
 import com.avaje.ebean.dbmigration.model.MConfiguration;
 import com.avaje.ebean.dbmigration.model.MigrationModel;
+import com.avaje.ebean.dbmigration.model.MigrationVersion;
 import com.avaje.ebean.dbmigration.model.ModelContainer;
 import com.avaje.ebean.dbmigration.model.ModelDiff;
 import com.avaje.ebean.dbmigration.model.PlatformDdlWriter;
@@ -59,6 +60,8 @@ public class DbMigration {
 
   private static final String initialVersion = "1.0";
 
+  private static final String GENERATED_COMMENT = "THIS IS A GENERATED FILE - DO NOT MODIFY";
+
   /**
    * Set to true if DbMigration run with online EbeanServer instance.
    */
@@ -199,46 +202,15 @@ public class DbMigration {
     if (!online) {
       DbOffline.setRunningMigration();
     }
-
     setDefaults();
-
     try {
+      Request request = createRequest();
 
-      File migrationDir = getMigrationDirectory();
-      File modelDir = getModelDirectory(migrationDir);
-
-      MigrationModel migrationModel = new MigrationModel(modelDir, migrationConfig.getModelSuffix());
-      ModelContainer migrated = migrationModel.read();
-
-      CurrentModel currentModel = new CurrentModel(server, constraintNaming);
-      ModelContainer current = currentModel.read();
-
-      ModelDiff diff = new ModelDiff(migrated);
-      diff.compareTo(current);
-
-      if (diff.isEmpty()) {
-        logger.info("no changes detected - no migration written");
-        return;
-      }
-
-      // there were actually changes to write
-      Migration dbMigration = diff.getMigration();
-
-      String fullVersion = getFullVersion(migrationModel);
-
-      logger.info("generating migration:{}", fullVersion);
-      if (!writeMigrationXml(dbMigration, modelDir, fullVersion)) {
-        logger.warn("migration already exists, not generating DDL");
-
+      String pendingVersion = generatePendingDrop();
+      if (pendingVersion != null) {
+        generatePendingDrop(request, pendingVersion);
       } else {
-        if (databasePlatform != null) {
-          // writer needs the current model to provide table/column details for
-          // history ddl generation (triggers, history tables etc)
-          DdlWrite write = new DdlWrite(new MConfiguration(), currentModel.read());
-          PlatformDdlWriter writer = createDdlWriter(databasePlatform, "");
-          writer.processMigration(dbMigration, write, migrationDir , fullVersion);
-        }
-        writeExtraPlatformDdl(fullVersion, currentModel, dbMigration, migrationDir);
+        generateDiff(request);
       }
 
     } finally {
@@ -249,9 +221,128 @@ public class DbMigration {
   }
 
   /**
-   * Return the full version for the migration being generated.
+   * Generate the diff migration.
    */
-  private String getFullVersion(MigrationModel migrationModel) {
+  private void generateDiff(Request request) throws IOException {
+
+    List<String> pendingDrops = request.getPendingDrops();
+    if (!pendingDrops.isEmpty()) {
+      logger.info("Pending un-applied drops in versions {}", pendingDrops);
+    }
+
+    Migration migration = request.createDiffMigration();
+    if (migration == null) {
+      logger.info("no changes detected - no migration written");
+    } else {
+      // there were actually changes to write
+      generateMigration(request, migration, null);
+    }
+  }
+
+  /**
+   * Generate the migration based on the pendingDrops from a prior version.
+   */
+  private void generatePendingDrop(Request request, String pendingVersion) throws IOException {
+
+    Migration migration = request.migrationForPendingDrop(pendingVersion);
+
+    generateMigration(request, migration, pendingVersion);
+
+    List<String> pendingDrops = request.getPendingDrops();
+    if (!pendingDrops.isEmpty()) {
+      logger.info("... remaining pending un-applied drops in versions {}", pendingDrops);
+    }
+  }
+
+  private Request createRequest() {
+    return new Request();
+  }
+
+  private class Request {
+
+    final File migrationDir;
+    final File modelDir;
+    final MigrationModel migrationModel;
+    final CurrentModel currentModel;
+    final ModelContainer migrated;
+    final ModelContainer current;
+
+    private Request() {
+      this.migrationDir = getMigrationDirectory();
+      this.modelDir = getModelDirectory(migrationDir);
+      this.migrationModel = new MigrationModel(modelDir, migrationConfig.getModelSuffix());
+      this.migrated = migrationModel.read();
+      this.currentModel = new CurrentModel(server, constraintNaming);
+      this.current = currentModel.read();
+    }
+
+    /**
+     * Return the migration for the pending drops for a given version.
+     */
+    public Migration migrationForPendingDrop(String pendingVersion) {
+
+      Migration migration = migrated.migrationForPendingDrop(pendingVersion);
+
+      // register any remaining pending drops
+      migrated.registerPendingHistoryDropColumns(current);
+      return migration;
+    }
+
+    /**
+     * Return the list of versions that have pending un-applied drops.
+     */
+    public List<String> getPendingDrops() {
+      return migrated.getPendingDrops();
+    }
+
+    /**
+     * Create and return the diff of the current model to the migration model.
+     */
+    public Migration createDiffMigration() {
+      ModelDiff diff = new ModelDiff(migrated);
+      diff.compareTo(current);
+      return diff.isEmpty() ? null : diff.getMigration();
+    }
+  }
+
+  private void generateMigration(Request request, Migration dbMigration, String dropsFor) throws IOException {
+
+    String fullVersion = getFullVersion(request.migrationModel, dropsFor);
+
+    logger.info("generating migration:{}", fullVersion);
+    if (!writeMigrationXml(dbMigration, request.modelDir, fullVersion)) {
+      logger.warn("migration already exists, not generating DDL");
+
+    } else {
+      if (databasePlatform != null) {
+        // writer needs the current model to provide table/column details for
+        // history ddl generation (triggers, history tables etc)
+        DdlWrite write = new DdlWrite(new MConfiguration(), request.current);
+        PlatformDdlWriter writer = createDdlWriter(databasePlatform, "");
+        writer.processMigration(dbMigration, write, request.migrationDir , fullVersion);
+      }
+      writeExtraPlatformDdl(fullVersion, request.currentModel, dbMigration, request.migrationDir);
+    }
+  }
+
+  /**
+   * Return true if the next pending drop changeSet should be generated as the next migration.
+   */
+  private String generatePendingDrop() {
+
+    String nextDrop = System.getProperty("ddl.migration.pendingDropsFor");
+    if (nextDrop != null) {
+      return nextDrop;
+    }
+    return migrationConfig.getGeneratePendingDrop();
+  }
+
+  /**
+   * Return the full version for the migration being generated.
+   *
+   * The full version can contain a comment suffix after a "__" double underscore.
+   */
+  private String getFullVersion(MigrationModel migrationModel, String dropsFor) {
 
     String version = migrationConfig.getVersion();
     if (version == null) {
@@ -259,10 +350,14 @@ public class DbMigration {
     }
 
     String fullVersion = version;
+    if (migrationConfig.getName() != null) {
+      fullVersion += "__" + toUnderScore(migrationConfig.getName());
 
-    String name = migrationConfig.getName();
-    if (name != null) {
-      fullVersion += "__" + toUnderScore(name);
+    } else if (dropsFor != null) {
+      fullVersion += "__" + toUnderScore("dropsFor_" + MigrationVersion.trim(dropsFor));
+
+    } else if (version.equals(initialVersion)) {
+      fullVersion += "__initial";
     }
     return fullVersion;
   }
@@ -304,7 +399,8 @@ public class DbMigration {
     if (file.exists()) {
       return false;
     }
-    MigrationXmlWriter xmlWriter = new MigrationXmlWriter();
+    String comment = migrationConfig.isIncludeGeneratedFileComment() ? GENERATED_COMMENT : null;
+    MigrationXmlWriter xmlWriter = new MigrationXmlWriter(comment);
     xmlWriter.write(dbMigration, file);
     return true;
   }

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

@@ -2,7 +2,6 @@ package com.avaje.ebean.dbmigration;
 
 import com.avaje.ebean.config.ServerConfig;
 import com.avaje.ebean.dbmigration.model.CurrentModel;
-import com.avaje.ebeaninternal.api.SpiEbeanPlugin;
 import com.avaje.ebeaninternal.api.SpiEbeanServer;
 
 import javax.persistence.PersistenceException;
@@ -30,8 +29,8 @@ public class DdlGenerator {
   private final boolean createOnly;
 
   private CurrentModel currentModel;
-  private String dropContent;
-  private String createContent;
+  private String dropAllContent;
+  private String createAllContent;
 
   public DdlGenerator(SpiEbeanServer server, ServerConfig serverConfig) {
     this.server = server;
@@ -84,18 +83,18 @@ public class DdlGenerator {
 
   protected void runDropSql() throws IOException {
     if (!createOnly) {
-      if (dropContent == null) {
-        dropContent = readFile(getDropFileName());
+      if (dropAllContent == null) {
+        dropAllContent = readFile(getDropFileName());
       }
-      runScript(true, dropContent, getDropFileName());
+      runScript(true, dropAllContent, getDropFileName());
     }
   }
 
   protected void runCreateSql() throws IOException {
-    if (createContent == null) {
-      createContent = readFile(getCreateFileName());
+    if (createAllContent == null) {
+      createAllContent = readFile(getCreateFileName());
     }
-    runScript(false, createContent, getCreateFileName());
+    runScript(false, createAllContent, getCreateFileName());
   }
 
   protected void runInitSql() throws IOException {
@@ -132,8 +131,7 @@ public class DdlGenerator {
   protected void writeDrop(String dropFile) {
 
     try {
-      String c = generateDropDdl();
-      writeFile(dropFile, c);
+      writeFile(dropFile, generateDropAllDdl());
     } catch (IOException e) {
       throw new PersistenceException("Error generating Drop DDL", e);
     }
@@ -142,28 +140,27 @@ public class DdlGenerator {
   protected void writeCreate(String createFile) {
 
     try {
-      String c = generateCreateDdl();
-      writeFile(createFile, c);
+      writeFile(createFile, generateCreateAllDdl());
     } catch (IOException e) {
       throw new PersistenceException("Error generating Create DDL", e);
     }
   }
 
-  protected String generateDropDdl() {
+  protected String generateDropAllDdl() {
 
     try {
-      dropContent = currentModel().getDropDdl();
-      return dropContent;
+      dropAllContent = currentModel().getDropAllDdl();
+      return dropAllContent;
     } catch (IOException e) {
       throw new RuntimeException(e);
     }
   }
 
-  protected String generateCreateDdl() {
+  protected String generateCreateAllDdl() {
 
     try {
-      createContent = currentModel().getCreateDdl();
-      return createContent;
+      createAllContent = currentModel().getCreateDdl();
+      return createAllContent;
     } catch (IOException e) {
       throw new RuntimeException(e);
     }

src/main/java/com/avaje/ebean/dbmigration/ddlgeneration/DdlWrite.java

@@ -12,32 +12,17 @@ public class DdlWrite {
 
   private final ModelContainer currentModel;
 
+  private final DdlBuffer applyDropDependencies;
+
   private final DdlBuffer apply;
 
   private final DdlBuffer applyForeignKeys;
 
   private final DdlBuffer applyHistory;
 
-  private final DdlBuffer rollbackForeignKeys;
+  private final DdlBuffer dropAllForeignKeys;
 
-  private final DdlBuffer rollback;
-
-  /**
-   * For DDL that drops tables and columns etc.
-   *
-   * This DDL typically can not run automatically in production as there is most commonly
-   * existing servers running the application using these tables and columns. Typically
-   * these drop statements may be executed AFTER all the servers in the application have
-   * migrated onto new code.
-   */
-  private final DdlBuffer drop;
-
-  /**
-   * For use when History is turned off for a base table or history is no longer
-   * desired on specific columns. This DDL should typically execute manually after review
-   * by DBA's.
-   */
-  private final DdlBuffer dropHistory;
+  private final DdlBuffer dropAll;
 
   /**
    * Create without any configuration or current model (no history support).
@@ -51,13 +36,12 @@ public class DdlWrite {
    */
   public DdlWrite(MConfiguration configuration, ModelContainer currentModel) {
     this.currentModel = currentModel;
+    this.applyDropDependencies = new BaseDdlBuffer(configuration);
     this.apply = new BaseDdlBuffer(configuration);
     this.applyForeignKeys = new BaseDdlBuffer(configuration);
     this.applyHistory = new BaseDdlBuffer(configuration);
-    this.rollbackForeignKeys = new BaseDdlBuffer(configuration);
-    this.rollback = new BaseDdlBuffer(configuration);
-    this.drop = new BaseDdlBuffer(configuration);
-    this.dropHistory = new BaseDdlBuffer(configuration);
+    this.dropAllForeignKeys = new BaseDdlBuffer(configuration);
+    this.dropAll = new BaseDdlBuffer(configuration);
   }
 
   /**
@@ -77,22 +61,8 @@ public class DdlWrite {
   public boolean isApplyEmpty() {
     return apply.getBuffer().isEmpty()
         && applyForeignKeys.getBuffer().isEmpty()
-        && applyHistory.getBuffer().isEmpty();
-  }
-
-  /**
-   * Return true if the apply rollback buffers are all empty.
-   */
-  public boolean isApplyRollbackEmpty() {
-    return rollback.getBuffer().isEmpty()
-        && rollbackForeignKeys.getBuffer().isEmpty();
-  }
-
-  /**
-   * Return true the drop buffers are empty.
-   */
-  public boolean isDropEmpty() {
-    return drop.getBuffer().isEmpty() && dropHistory.getBuffer().isEmpty();
+        && applyHistory.getBuffer().isEmpty()
+        && applyDropDependencies.getBuffer().isEmpty();
   }
 
   /**
@@ -102,6 +72,13 @@ public class DdlWrite {
     return apply;
   }
 
+  /**
+   * Return the buffer that executes early to drop dependencies like views etc.
+   */
+  public DdlBuffer applyDropDependencies() {
+    return applyDropDependencies;
+  }
+
   /**
    * Return the buffer that APPLY DDL is written to for foreign keys and their associated indexes.
    * <p>
@@ -120,41 +97,17 @@ public class DdlWrite {
   }
 
   /**
-   * Return the buffer that ROLLBACK DDL is written to for foreign keys and associated indexes.
+   * Return the buffer used for the 'drop all DDL' for dropping foreign keys and associated indexes.
    */
-  public DdlBuffer rollbackForeignKeys() {
-    return rollbackForeignKeys;
+  public DdlBuffer dropAllForeignKeys() {
+    return dropAllForeignKeys;
   }
 
   /**
-   * Return the buffer that ROLLBACK DDL is written to which is considered safe to run when
-   * apply changes fail to execute. This will reverse the apply changes typically dropping
-   * newly created tables, foreign keys etc.
-   * <p>
-   * When apply changes are made against DB's that support transactional DDL you could argue
-   * that these rollback statements are not necessary.
-   * <p>
-   * Note that statements added to this rollback buffer are executed after foreign key rollback
-   * has been executed.
+   * Return the buffer used for the 'drop all DDL' to drop tables, views and history triggers etc.
    */
-  public DdlBuffer rollback() {
-    return rollback;
+  public DdlBuffer dropAll() {
+    return dropAll;
   }
 
-  /**
-   * Return the buffer that destructive changes are written to. This is typically drop table and
-   * drop column.
-   */
-  public DdlBuffer drop() {
-    return drop;
-  }
-
-  /**
-   * Return the buffer that is used when history is no longer required on a table or specific columns.
-   */
-  public DdlBuffer dropHistory() {
-    return dropHistory;
-  }
-
-
 }

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

@@ -123,6 +123,9 @@ public class BaseTableDdl implements TableDdl {
       // defined on the columns
       writePrimaryKeyConstraint(apply, createTable.getPkName(), toColumnNames(pk));
     }
+    if (platformDdl.isInlineForeignKeys()) {
+      writeInlineForeignKeys(writer, createTable);
+    }
 
     apply.newLine().append(")");
     addTableCommentInline(apply, createTable);
@@ -140,7 +143,7 @@ public class BaseTableDdl implements TableDdl {
 
     // add drop table to the rollback buffer - do this before
     // we drop the related sequence (if sequences are used)
-    dropTable(writer.rollback(), tableName);
+    dropTable(writer.dropAll(), tableName);
 
     if (useSequence) {
       String pkCol = pk.get(0).getName();
@@ -149,10 +152,11 @@ public class BaseTableDdl implements TableDdl {
 
     // add blank line for a bit of whitespace between tables
     apply.end();
-    writer.rollback().end();
-
-    writeAddForeignKeys(writer, createTable);
+    writer.dropAll().end();
 
+    if (!platformDdl.isInlineForeignKeys()) {
+      writeAddForeignKeys(writer, createTable);
+    }
   }
 
   /**
@@ -204,7 +208,7 @@ public class BaseTableDdl implements TableDdl {
           .append(platformDdl.alterTableAddUniqueConstraint(tableName, uqName, columnNames))
           .endOfStatement();
 
-      write.rollbackForeignKeys()
+      write.dropAllForeignKeys()
           .append(platformDdl.dropIndex(uqName, tableName))
           .endOfStatement();
     }
@@ -225,7 +229,7 @@ public class BaseTableDdl implements TableDdl {
     String createSeq = platformDdl.createSequence(seqName, initial, allocate);
     if (createSeq != null) {
       writer.apply().append(createSeq).newLine();
-      writer.rollback().append(platformDdl.dropSequence(seqName)).endOfStatement();
+      writer.dropAll().append(platformDdl.dropSequence(seqName)).endOfStatement();
     }
   }
 
@@ -235,6 +239,43 @@ public class BaseTableDdl implements TableDdl {
     platformDdl.createWithHistory(writer, table);
   }
 
+  protected void writeInlineForeignKeys(DdlWrite write, CreateTable createTable) throws IOException {
+
+    for (Column column : createTable.getColumn()) {
+      String references = column.getReferences();
+      if (hasValue(references)) {
+        writeInlineForeignKey(write, column);
+      }
+    }
+    writeInlineCompoundForeignKeys(write, createTable);
+  }
+
+  protected void writeInlineForeignKey(DdlWrite write, Column column) throws IOException {
+
+    String references = column.getReferences();
+    int pos = references.lastIndexOf('.');
+    if (pos == -1) {
+      throw new IllegalStateException("Expecting period '.' character for table.column split but not found in [" + references + "]");
+    }
+    String refTableName = references.substring(0, pos);
+    String refColumnName = references.substring(pos + 1);
+    String fkConstraint = platformDdl.tableInlineForeignKey(new String[]{column.getName()}, refTableName, new String[]{refColumnName});
+    write.apply().append(",").newLine().append("  ").append(fkConstraint);
+  }
+
+  protected void writeInlineCompoundForeignKeys(DdlWrite write, CreateTable createTable) throws IOException {
+
+    List<ForeignKey> foreignKey = createTable.getForeignKey();
+    for (ForeignKey key : foreignKey) {
+      String refTableName = key.getRefTableName();
+      String[] cols = toColumnNamesSplit(key.getColumnNames());
+      String[] refColumns = toColumnNamesSplit(key.getRefColumnNames());
+
+      String fkConstraint = platformDdl.tableInlineForeignKey(cols, refTableName, refColumns);
+      write.apply().append(",").newLine().append("  ").append(fkConstraint);
+    }
+  }
+
   protected void writeAddForeignKeys(DdlWrite write, CreateTable createTable) throws IOException {
 
     String tableName = createTable.getName();
@@ -295,21 +336,24 @@ public class BaseTableDdl implements TableDdl {
 
     fkeyBuffer.end();
 
-    write.rollbackForeignKeys()
+    write.dropAllForeignKeys()
         .append(platformDdl.alterTableDropForeignKey(tableName, fkName)).endOfStatement();
 
     if (indexName != null) {
-      write.rollbackForeignKeys()
+      write.dropAllForeignKeys()
           .append(platformDdl.dropIndex(indexName, tableName)).endOfStatement();
     }
 
-    write.rollbackForeignKeys().end();
+    write.dropAllForeignKeys().end();
 
   }
 
   protected void alterTableAddForeignKey(DdlBuffer buffer, String fkName, String tableName, String[] columns, String refTable, String[] refColumns) throws IOException {
 
-    buffer.append(platformDdl.alterTableAddForeignKey(tableName, fkName, columns, refTable, refColumns)).endOfStatement();
+    String fkConstraint = platformDdl.alterTableAddForeignKey(tableName, fkName, columns, refTable, refColumns);
+    if (fkConstraint != null && !fkConstraint.isEmpty()) {
+      buffer.append(fkConstraint).endOfStatement();
+    }
   }
 
   protected void appendColumns(String[] columns, DdlBuffer buffer) throws IOException {
@@ -471,7 +515,7 @@ public class BaseTableDdl implements TableDdl {
         .append(platformDdl.createIndex(createIndex.getIndexName(), createIndex.getTableName(), cols))
         .endOfStatement();
 
-    writer.rollback()
+    writer.dropAll()
         .append(platformDdl.dropIndex(createIndex.getIndexName(), createIndex.getTableName()))
         .endOfStatement();
   }
@@ -520,7 +564,6 @@ public class BaseTableDdl implements TableDdl {
     List<Column> columns = addColumn.getColumn();
     for (Column column : columns) {
       alterTableAddColumn(writer.apply(), tableName, column, false);
-      alterTableDropColumn(writer.rollback(), tableName, column.getName());
     }
 
     if (isTrue(addColumn.isWithHistory())) {
@@ -529,13 +572,11 @@ public class BaseTableDdl implements TableDdl {
       for (Column column : columns) {
         regenerateHistoryTriggers(tableName, HistoryTableUpdate.Change.ADD, column.getName());
         alterTableAddColumn(writer.apply(), historyTable, column, true);
-        alterTableDropColumn(writer.rollback(), historyTable, column.getName());
       }
     }
 
     // add a bit of whitespace
     writer.apply().end();
-    writer.rollback().end();
   }
 
   /**
@@ -544,7 +585,7 @@ public class BaseTableDdl implements TableDdl {
   @Override
   public void generate(DdlWrite writer, DropTable dropTable) throws IOException {
 
-    dropTable(writer.drop(), dropTable.getName());
+    dropTable(writer.apply(), dropTable.getName());
   }
 
   /**
@@ -555,14 +596,14 @@ public class BaseTableDdl implements TableDdl {
 
     String tableName = dropColumn.getTableName();
 
-    alterTableDropColumn(writer.drop(), tableName, dropColumn.getColumnName());
+    alterTableDropColumn(writer.apply(), tableName, dropColumn.getColumnName());
     if (isTrue(dropColumn.isWithHistory())) {
       // also drop from the history table
       regenerateHistoryTriggers(tableName, HistoryTableUpdate.Change.DROP, dropColumn.getColumnName());
-      alterTableDropColumn(writer.drop(), historyTable(tableName), dropColumn.getColumnName());
+      alterTableDropColumn(writer.apply(), historyTable(tableName), dropColumn.getColumnName());
     }
 
-    writer.drop().end();
+    writer.apply().end();
   }
 
   /**
@@ -642,21 +683,6 @@ public class BaseTableDdl implements TableDdl {
     if (hasValue(ddl)) {
       writer.apply().append(ddl).endOfStatement();
 
-      // reverse and generate the rollback statement
-      String currentType = alter.getCurrentType();
-      String type = alter.getType();
-      Boolean currentNotnull = alter.isCurrentNotnull();
-      Boolean notnull = alter.isNotnull();
-
-      alter.setCurrentType(type);
-      alter.setType(currentType);
-      alter.setNotnull(currentNotnull);
-      alter.setCurrentNotnull(notnull);
-
-      // write the rollback
-      ddl = platformDdl.alterColumnBaseAttributes(alter);
-      writer.rollback().append(ddl).endOfStatement();
-
       if (isTrue(alter.isWithHistory()) && alter.getType() != null) {
         // mysql and sql server column type change allowing nulls in the history table column
         AlterColumn alterHistoryColumn = new AlterColumn();
@@ -667,11 +693,6 @@ public class BaseTableDdl implements TableDdl {
 
         // write the apply to history table
         writer.apply().append(histColumnDdl).endOfStatement();
-
-        // write the rollback from history table
-        alterHistoryColumn.setType(currentType);
-        histColumnDdl = platformDdl.alterColumnBaseAttributes(alterHistoryColumn);
-        writer.rollback().append(histColumnDdl).endOfStatement();
       }
     }
   }
@@ -689,8 +710,6 @@ public class BaseTableDdl implements TableDdl {
     String ddl = platformDdl.alterColumnNotnull(alter.getTableName(), alter.getColumnName(), alter.isNotnull());
     if (hasValue(ddl)) {
       writer.apply().append(ddl).endOfStatement();
-      ddl = platformDdl.alterColumnNotnull(alter.getTableName(), alter.getColumnName(), alter.isCurrentNotnull());
-      writer.rollback().append(ddl).endOfStatement();
     }
   }
 
@@ -699,14 +718,10 @@ public class BaseTableDdl implements TableDdl {
     String ddl = platformDdl.alterColumnType(alter.getTableName(), alter.getColumnName(), alter.getType());
     if (hasValue(ddl)) {
       writer.apply().append(ddl).endOfStatement();
-      ddl = platformDdl.alterColumnType(alter.getTableName(), alter.getColumnName(), alter.getCurrentType());
-      writer.rollback().append(ddl).endOfStatement();
       if (isTrue(alter.isWithHistory())) {
         // apply same type change to matching column in the history table
         ddl = platformDdl.alterColumnType(historyTable(alter.getTableName()), alter.getColumnName(), alter.getType());
         writer.apply().append(ddl).endOfStatement();
-        ddl = platformDdl.alterColumnType(historyTable(alter.getTableName()), alter.getColumnName(), alter.getCurrentType());
-        writer.rollback().append(ddl).endOfStatement();
       }
     }
   }
@@ -762,7 +777,7 @@ public class BaseTableDdl implements TableDdl {
         .append(platformDdl.alterTableAddUniqueConstraint(alter.getTableName(), uqName, cols))
         .endOfStatement();
 
-    writer.rollbackForeignKeys()
+    writer.dropAllForeignKeys()
         .append(platformDdl.dropIndex(uqName, alter.getTableName()))
         .endOfStatement();
   }

src/main/java/com/avaje/ebean/dbmigration/ddlgeneration/platform/DB2Ddl.java

@@ -1,15 +1,14 @@
 package com.avaje.ebean.dbmigration.ddlgeneration.platform;
 
-import com.avaje.ebean.config.dbplatform.DbIdentity;
-import com.avaje.ebean.config.dbplatform.DbTypeMap;
+import com.avaje.ebean.config.dbplatform.DatabasePlatform;
 
 /**
  * DB2 platform specific DDL.
  */
 public class DB2Ddl extends PlatformDdl {
 
-  public DB2Ddl(DbTypeMap platformTypes, DbIdentity dbIdentity) {
-    super(platformTypes, dbIdentity);
+  public DB2Ddl(DatabasePlatform platform) {
+    super(platform);
     this.identitySuffix = " generated by default as identity";
   }
 

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

@@ -10,7 +10,6 @@ import com.avaje.ebean.dbmigration.model.MColumn;
 import com.avaje.ebean.dbmigration.model.MTable;
 
 import java.io.IOException;
-import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 
@@ -45,21 +44,43 @@ public abstract class DbTriggerBasedHistoryDdl implements PlatformHistoryDdl {
     this.historySuffix = serverConfig.getHistoryTableSuffix();
     this.constraintNaming = serverConfig.getConstraintNaming();
 
-    this.sysPeriodStart = sysPeriod+"_start";
-    this.sysPeriodEnd = sysPeriod+"_end";
+    this.sysPeriodStart = sysPeriod + "_start";
+    this.sysPeriodEnd = sysPeriod + "_end";
   }
 
   @Override
-  public void regenerateHistoryTriggers(DdlWrite writer, HistoryTableUpdate update) throws IOException {
+  public void updateTriggers(DdlWrite writer, HistoryTableUpdate update) throws IOException {
 
     MTable table = writer.getTable(update.getBaseTable());
     if (table == null) {
-      throw new IllegalStateException("MTable "+update.getBaseTable()+" not found in writer? (required for history DDL)");
+      throw new IllegalStateException("MTable " + update.getBaseTable() + " not found in writer? (required for history DDL)");
     }
-    regenerateHistoryTriggers(writer, table, update);
+    updateTriggers(writer, table, update);
   }
 
-  protected abstract void regenerateHistoryTriggers(DdlWrite writer, MTable table, HistoryTableUpdate update) throws IOException;
+  /**
+   * Replace the existing triggers/stored procedures/views for history table support given the included columns.
+   */
+  protected abstract void updateHistoryTriggers(DbTriggerUpdate triggerUpdate) throws IOException;
+
+  /**
+   * Process the HistoryTableUpdate which can result in changes to the apply, rollback
+   * and drop scripts.
+   */
+  protected void updateTriggers(DdlWrite writer, MTable table, HistoryTableUpdate update) throws IOException {
+
+    writer.applyHistory().append("-- changes: ").append(update.description()).newLine();
+
+    updateHistoryTriggers(createDbTriggerUpdate(writer, table));
+  }
+
+  protected DbTriggerUpdate createDbTriggerUpdate(DdlWrite writer, MTable table) {
+
+    List<String> columns = columnNamesForApply(table);
+    String baseTableName = table.getName();
+    String historyTableName = historyTableName(baseTableName);
+    return new DbTriggerUpdate(baseTableName, historyTableName, writer, columns);
+  }
 
   @Override
   public void dropHistoryTable(DdlWrite writer, DropHistoryTable dropHistoryTable) throws IOException {
@@ -67,18 +88,17 @@ public abstract class DbTriggerBasedHistoryDdl implements PlatformHistoryDdl {
     String baseTable = dropHistoryTable.getBaseTable();
 
     // drop in appropriate order
-    dropTriggers(writer.dropHistory(), baseTable);
-    dropHistoryTableEtc(writer.dropHistory(), baseTable);
+    dropTriggers(writer.applyDropDependencies(), baseTable);
+    dropHistoryTableEtc(writer.applyDropDependencies(), baseTable);
   }
 
-
   @Override
   public void addHistoryTable(DdlWrite writer, AddHistoryTable addHistoryTable) throws IOException {
 
     String baseTable = addHistoryTable.getBaseTable();
     MTable table = writer.getTable(baseTable);
     if (table == null) {
-      throw new IllegalStateException("MTable "+baseTable+" not found in writer? (required for history DDL)");
+      throw new IllegalStateException("MTable " + baseTable + " not found in writer? (required for history DDL)");
     }
 
     createWithHistory(writer, table);
@@ -90,12 +110,11 @@ public abstract class DbTriggerBasedHistoryDdl implements PlatformHistoryDdl {
     String baseTable = table.getName();
     String whenCreatedColumn = table.getWhenCreatedColumn();
 
-    // rollback changes in appropriate order
-    dropTriggers(writer.rollback(), baseTable);
-    dropHistoryTableEtc(writer.rollback(), baseTable);
+    dropTriggers(writer.dropAll(), baseTable);
+    dropHistoryTableEtc(writer.dropAll(), baseTable);
 
     addHistoryTable(writer, table, whenCreatedColumn);
-    addStoredFunction(writer, table, null);
+    createStoredFunction(writer, table);
     createTriggers(writer, table);
   }
 
@@ -103,7 +122,7 @@ public abstract class DbTriggerBasedHistoryDdl implements PlatformHistoryDdl {
 
   protected abstract void dropTriggers(DdlBuffer buffer, String baseTable) throws IOException;
 
-  protected void addStoredFunction(DdlWrite writer, MTable table, HistoryTableUpdate update) throws IOException {
+  protected void createStoredFunction(DdlWrite writer, MTable table) throws IOException {
     // do nothing
   }
 
@@ -158,7 +177,7 @@ public abstract class DbTriggerBasedHistoryDdl implements PlatformHistoryDdl {
 
     apply.append("create table ").append(table.getName()).append(historySuffix).append("(").newLine();
 
-    Collection<MColumn> cols = table.getColumns().values();
+    Collection<MColumn> cols = table.allColumns();
     for (MColumn column : cols) {
       if (!column.isDraftOnly()) {
         writeColumnDefinition(apply, column.getName(), column.getType());
@@ -191,6 +210,26 @@ public abstract class DbTriggerBasedHistoryDdl implements PlatformHistoryDdl {
         .endOfStatement().end();
   }
 
+  /**
+   * Create or replace the with_history view with explicit columns.
+   */
+  protected void createWithHistoryView(DbTriggerUpdate update) throws IOException {
+
+    DdlBuffer apply = update.historyBuffer();
+    apply.append("create or replace view ").append(update.getBaseTable()).append(viewSuffix).append(" as select ");
+    appendColumnNames(apply, update.getColumns(), "");
+    appendSysPeriodColumns(apply, ", ");
+    apply.append(" from ").append(update.getBaseTable()).append(" union all select ");
+    appendColumnNames(apply, update.getColumns(), "");
+    appendSysPeriodColumns(apply, ", ");
+    apply.append(" from ").append(update.getHistoryTable()).endOfStatement().end();
+  }
+
+  protected void appendSysPeriodColumns(DdlBuffer apply, String prefix) throws IOException {
+    appendColumnName(apply, prefix, sysPeriodStart);
+    appendColumnName(apply, prefix, sysPeriodEnd);
+  }
+
   protected void dropHistoryTableEtc(DdlBuffer buffer, String baseTableName) throws IOException {
 
     buffer.append("drop view ").append(baseTableName).append(viewSuffix).endOfStatement();
@@ -203,8 +242,6 @@ public abstract class DbTriggerBasedHistoryDdl implements PlatformHistoryDdl {
     buffer.append("alter table ").append(baseTableName).append(" drop column ").append(sysPeriodEnd).endOfStatement();
   }
 
-  //protected abstract void addFunction(DdlBuffer apply, String procedureName, String historyTable, List<String> includedColumns) throws IOException;
-
   protected void appendInsertIntoHistory(DdlBuffer buffer, String historyTable, List<String> columns) throws IOException {
 
     buffer.append("    insert into ").append(historyTable).append(" (").append(sysPeriodStart).append(",").append(sysPeriodEnd).append(",");
@@ -216,7 +253,7 @@ public abstract class DbTriggerBasedHistoryDdl implements PlatformHistoryDdl {
 
   protected void appendColumnNames(DdlBuffer buffer, List<String> columns, String columnPrefix) throws IOException {
 
-    for (int i=0; i< columns.size(); i++) {
+    for (int i = 0; i < columns.size(); i++) {
       if (i > 0) {
         buffer.append(", ");
       }
@@ -226,18 +263,26 @@ public abstract class DbTriggerBasedHistoryDdl implements PlatformHistoryDdl {
   }
 
   /**
-   * Return the list of included columns in order.
+   * Append a single column to the buffer if it is not null.
    */
-  protected List<String> includedColumnNames(MTable table) throws IOException {
+  protected void appendColumnName(DdlBuffer buffer, String prefix, String columnName) throws IOException {
 
-    Collection<MColumn> columns = table.getColumns().values();
-    List<String> includedColumns = new ArrayList<String>(columns.size());
-
-    for (MColumn column : columns) {
-      if (column.isIncludeInHistory()) {
-        includedColumns.add(column.getName());
-      }
+    if (columnName != null) {
+      buffer.append(prefix).append(columnName);
     }
-    return includedColumns;
   }
+
+  /**
+   * Return the column names included in history for the apply script.
+   * <p>
+   * Note that dropped columns are actually still included at this point as they are going
+   * to be removed from the history handling when the drop script runs that also deletes
+   * the column.
+   * </p>
+   */
+  protected List<String> columnNamesForApply(MTable table) {
+
+    return table.allHistoryColumns(true);
+  }
+
 }

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

@@ -0,0 +1,63 @@
+package com.avaje.ebean.dbmigration.ddlgeneration.platform;
+
+import com.avaje.ebean.dbmigration.ddlgeneration.DdlBuffer;
+import com.avaje.ebean.dbmigration.ddlgeneration.DdlWrite;
+
+import java.util.List;
+
+/**
+ * DB trigger update when a change occurs on a table with history.
+ */
+public class DbTriggerUpdate {
+
+  private final String baseTableName;
+
+  private final String historyTableName;
+
+  private final DdlWrite writer;
+
+  private final List<String> columns;
+
+  public DbTriggerUpdate(String baseTableName, String historyTableName, DdlWrite writer, List<String> columns) {
+    this.baseTableName = baseTableName;
+    this.historyTableName = historyTableName;
+    this.writer = writer;
+    this.columns = columns;
+  }
+
+  /**
+   * Return the appropriate buffer for the current mode.
+   */
+  public DdlBuffer historyBuffer() {
+    return writer.applyHistory();
+  }
+
+  /**
+   * Return the appropriate drop dependency buffer for the current mode.
+   */
+  public DdlBuffer dropDependencyBuffer() {
+    return writer.applyDropDependencies();
+  }
+
+  /**
+   * Return the base table name.
+   */
+  public String getBaseTable() {
+    return baseTableName;
+  }
+
+  /**
+   * Return the history table name.
+   */
+  public String getHistoryTable() {
+    return historyTableName;
+  }
+
+  /**
+   * Return the included columns.
+   */
+  public List<String> getColumns() {
+    return columns;
+  }
+
+}

src/main/java/com/avaje/ebean/dbmigration/ddlgeneration/platform/H2Ddl.java

@@ -1,15 +1,14 @@
 package com.avaje.ebean.dbmigration.ddlgeneration.platform;
 
-import com.avaje.ebean.config.dbplatform.DbIdentity;
-import com.avaje.ebean.config.dbplatform.DbTypeMap;
+import com.avaje.ebean.config.dbplatform.DatabasePlatform;
 
 /**
  * H2 platform specific DDL.
  */
 public class H2Ddl extends PlatformDdl {
 
-  public H2Ddl(DbTypeMap platformTypes, DbIdentity dbIdentity) {
-    super(platformTypes, dbIdentity);
+  public H2Ddl(DatabasePlatform platform) {
+    super(platform);
     this.historyDdl = new H2HistoryDdl();
   }
 

src/main/java/com/avaje/ebean/dbmigration/ddlgeneration/platform/H2HistoryDdl.java

@@ -6,7 +6,6 @@ import com.avaje.ebean.dbmigration.ddlgeneration.DdlWrite;
 import com.avaje.ebean.dbmigration.model.MTable;
 
 import java.io.IOException;
-import java.util.List;
 
 /**
  * H2 history support using DB triggers to maintain a history table.
@@ -28,40 +27,20 @@ public class H2HistoryDdl extends DbTriggerBasedHistoryDdl {
   protected void createTriggers(DdlWrite writer, MTable table) throws IOException {
 
     String baseTableName = table.getName();
-    String historyTableName = historyTableName(baseTableName);
-    List<String> includedColumns = includedColumnNames(table);
-
     DdlBuffer apply = writer.applyHistory();
 
-    addCreateTrigger(apply, updateTriggerName(baseTableName), baseTableName, historyTableName, includedColumns);
+    addCreateTrigger(apply, updateTriggerName(baseTableName), baseTableName);
   }
 
   @Override
-  protected void regenerateHistoryTriggers(DdlWrite writer, MTable table, HistoryTableUpdate update) throws IOException {
+  protected void updateHistoryTriggers(DbTriggerUpdate update) throws IOException {
 
-    String baseTableName = table.getName();
-    String historyTableName = historyTableName(baseTableName);
-    List<String> includedColumns = includedColumnNames(table);
-
-    DdlBuffer apply = writer.applyHistory();
-
-    apply.append("-- Regenerated ").newLine();
-    apply.append("-- changes: ").append(update.description()).newLine();
-
-    dropTriggers(apply, baseTableName);
-    addCreateTrigger(apply, updateTriggerName(baseTableName), baseTableName, historyTableName, includedColumns);
-
-    // put a reverted version into the rollback buffer
-    update.toRevertedColumns(includedColumns);
-
-    DdlBuffer rollback = writer.rollback();
-    rollback.append("-- Revert regenerated ").newLine();
-    rollback.append("-- revert changes: ").append(update.description()).newLine();
-    dropTriggers(rollback, baseTableName);
-    addCreateTrigger(rollback, updateTriggerName(baseTableName), baseTableName, historyTableName, includedColumns);
+    DdlBuffer buffer = update.historyBuffer();
+    dropTriggers(buffer, update.getBaseTable());
+    addCreateTrigger(buffer, updateTriggerName(update.getBaseTable()), update.getBaseTable());
   }
 
-  private void addCreateTrigger(DdlBuffer apply, String triggerName, String baseTable, String historyTable, List<String> includedColumns) throws IOException {
+  private void addCreateTrigger(DdlBuffer apply, String triggerName, String baseTable) throws IOException {
 
     // Note that this does not take into account the historyTable name (excepts _history suffix) and
     // does not take into account excluded columns (all columns included in history)

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

@@ -10,7 +10,6 @@ import java.util.List;
  */
 public class HistoryTableUpdate {
 
-
   /**
    * Column change type.
    */
@@ -21,35 +20,25 @@ public class HistoryTableUpdate {
     EXCLUDE
   }
 
-  public static class Column {
+  private static class Column {
+
+    final Change change;
+
+    final String column;
 
-    public final Change change;
-    public final String column;
     public Column(Change change, String column) {
       this.change = change;
       this.column = column;
     }
 
+    public String toString() {
+      return description();
+    }
+
     public String description() {
       return change.name().toLowerCase()+" "+column;
     }
 
-    public void apply(List<String> includedColumns) {
-      switch (change) {
-        case ADD:
-        case INCLUDE: {
-          includedColumns.remove(column);
-          break;
-        }
-        case DROP:
-        case EXCLUDE: {
-          includedColumns.add(column);
-          break;
-        }
-        default:
-          throw new IllegalStateException("Unexpected change "+change);
-      }
-    }
   }
 
   private final String baseTable;
@@ -65,27 +54,12 @@ public class HistoryTableUpdate {
 
   /**
    * Return a description of the changes that cause the history trigger/function
-   * to be regenerated (added, dropped, included or excluded columns).
+   * to be regenerated (added, included, excluded and dropped columns).
    */
   public String description() {
-    StringBuilder sb = new StringBuilder(90);
-    for (int i = 0; i < columnChanges.size(); i++) {
-      if (i > 0) {
-        sb.append(", ");
-      }
-      sb.append(columnChanges.get(i).description());
-    }
-    return sb.toString();
+    return columnChanges.toString();
   }
 
-  public void toRevertedColumns(List<String> includedColumns) {
-
-    for (Column columnChange : columnChanges) {
-      columnChange.apply(includedColumns);
-    }
-  }
-
-
   /**
    * Add a comment for column added, dropped, included or excluded.
    */
@@ -100,10 +74,4 @@ public class HistoryTableUpdate {
     return baseTable;
   }
 
-  /**
-   * Return the comments.
-   */
-  public List<Column> getColumnChanges() {
-    return columnChanges;
-  }
 }

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

@@ -1,15 +1,14 @@
 package com.avaje.ebean.dbmigration.ddlgeneration.platform;
 
-import com.avaje.ebean.config.dbplatform.DbIdentity;
-import com.avaje.ebean.config.dbplatform.DbTypeMap;
+import com.avaje.ebean.config.dbplatform.DatabasePlatform;
 
 /**
  * Hsqldb platform specific DDL.
  */
 public class HsqldbDdl extends PlatformDdl {
 
-  public HsqldbDdl(DbTypeMap platformTypes, DbIdentity dbIdentity) {
-    super(platformTypes, dbIdentity);
+  public HsqldbDdl(DatabasePlatform platform) {
+    super(platform);
     this.identitySuffix = " generated by default as identity (start with 1) ";
   }
 

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

@@ -1,7 +1,6 @@
 package com.avaje.ebean.dbmigration.ddlgeneration.platform;
 
-import com.avaje.ebean.config.dbplatform.DbIdentity;
-import com.avaje.ebean.config.dbplatform.DbTypeMap;
+import com.avaje.ebean.config.dbplatform.DatabasePlatform;
 import com.avaje.ebean.dbmigration.ddlgeneration.DdlBuffer;
 import com.avaje.ebean.dbmigration.migration.AlterColumn;
 
@@ -12,8 +11,8 @@ import java.io.IOException;
  */
 public class MsSqlServerDdl extends PlatformDdl {
 
-  public MsSqlServerDdl(DbTypeMap platformTypes, DbIdentity dbIdentity) {
-    super(platformTypes, dbIdentity);
+  public MsSqlServerDdl(DatabasePlatform platform) {
+    super(platform);
     this.identitySuffix = " identity(1,1)";
     this.foreignKeyRestrict = "";
     this.inlineUniqueOneToOne = false;

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

@@ -1,7 +1,6 @@
 package com.avaje.ebean.dbmigration.ddlgeneration.platform;
 
-import com.avaje.ebean.config.dbplatform.DbIdentity;
-import com.avaje.ebean.config.dbplatform.DbTypeMap;
+import com.avaje.ebean.config.dbplatform.DatabasePlatform;
 import com.avaje.ebean.dbmigration.ddlgeneration.DdlBuffer;
 import com.avaje.ebean.dbmigration.migration.AlterColumn;
 import com.avaje.ebean.dbmigration.migration.Column;
@@ -14,8 +13,8 @@ import java.io.IOException;
  */
 public class MySqlDdl extends PlatformDdl {
 
-  public MySqlDdl(DbTypeMap platformTypes, DbIdentity dbIdentity) {
-    super(platformTypes, dbIdentity);
+  public MySqlDdl(DatabasePlatform platform) {
+    super(platform);
     this.alterColumn =  "modify";
     this.dropUniqueConstraint = "drop index";
     this.historyDdl = new MySqlHistoryDdl();

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

@@ -5,7 +5,6 @@ import com.avaje.ebean.dbmigration.ddlgeneration.DdlWrite;
 import com.avaje.ebean.dbmigration.model.MTable;
 
 import java.io.IOException;
-import java.util.List;
 
 /**
  * MySql history support using DB triggers to maintain a history table.
@@ -26,67 +25,46 @@ public class MySqlHistoryDdl extends DbTriggerBasedHistoryDdl {
   @Override
   protected void createTriggers(DdlWrite writer, MTable table) throws IOException {
 
-    String baseTableName = table.getName();
-    String historyTableName = historyTableName(baseTableName);
-    List<String> includedColumns = includedColumnNames(table);
+    DbTriggerUpdate update = createDbTriggerUpdate(writer, table);
 
-    DdlBuffer apply = writer.applyHistory();
-
-    addBeforeUpdate(apply, updateTriggerName(baseTableName), baseTableName, historyTableName, includedColumns);
-    addBeforeDelete(apply, deleteTriggerName(baseTableName), baseTableName, historyTableName, includedColumns);
+    addBeforeUpdate(updateTriggerName(update.getBaseTable()), update);
+    addBeforeDelete(deleteTriggerName(update.getBaseTable()), update);
   }
 
   @Override
-  protected void regenerateHistoryTriggers(DdlWrite writer, MTable table, HistoryTableUpdate update) throws IOException {
+  protected void updateHistoryTriggers(DbTriggerUpdate update) throws IOException {
 
-    String baseTableName = table.getName();
-    String historyTableName = historyTableName(baseTableName);
-    List<String> includedColumns = includedColumnNames(table);
+    DdlBuffer buffer = update.historyBuffer();
+    String baseTable = update.getBaseTable();
 
-    DdlBuffer apply = writer.applyHistory();
-
-    apply.append("-- Regenerated ").newLine();
-    apply.append("-- changes: ").append(update.description()).newLine();
-    // lock the base table while we drop and recreate the triggers
-    apply.append("lock tables ").append(baseTableName).append(" write").endOfStatement();
-    dropTriggers(apply, baseTableName);
-    addBeforeUpdate(apply, updateTriggerName(baseTableName), baseTableName, historyTableName, includedColumns);
-    addBeforeDelete(apply, deleteTriggerName(baseTableName), baseTableName, historyTableName, includedColumns);
-    apply.append("unlock tables").endOfStatement();
-
-    // put a reverted version into the rollback buffer
-    update.toRevertedColumns(includedColumns);
-
-    DdlBuffer rollback = writer.rollback();
-    rollback.append("-- Revert regenerated ").newLine();
-    rollback.append("-- revert changes: ").append(update.description()).newLine();
-    // lock the base table while we drop and recreate the triggers
-    rollback.append("lock tables ").append(baseTableName).append(" write").endOfStatement();
-    dropTriggers(rollback, baseTableName);
-    addBeforeUpdate(rollback, updateTriggerName(baseTableName), baseTableName, historyTableName, includedColumns);
-    addBeforeDelete(rollback, deleteTriggerName(baseTableName), baseTableName, historyTableName, includedColumns);
-    rollback.append("unlock tables").endOfStatement();
+    buffer.append("lock tables ").append(baseTable).append(" write").endOfStatement();
+    dropTriggers(buffer, baseTable);
+    addBeforeUpdate(updateTriggerName(baseTable), update);
+    addBeforeDelete(deleteTriggerName(baseTable), update);
+    buffer.append("unlock tables").endOfStatement();
   }
 
-  private void addBeforeUpdate(DdlBuffer apply, String triggerName, String baseTable, String historyTable, List<String> includedColumns) throws IOException {
+  private void addBeforeUpdate(String triggerName, DbTriggerUpdate update) throws IOException {
 
+    DdlBuffer apply = update.historyBuffer();
     apply
         .append("delimiter $$").newLine()
-        .append("create trigger ").append(triggerName).append(" before update on ").append(baseTable)
+        .append("create trigger ").append(triggerName).append(" before update on ").append(update.getBaseTable())
         .append(" for each row begin").newLine();
-    appendInsertIntoHistory(apply, historyTable, includedColumns);
+    appendInsertIntoHistory(apply, update.getHistoryTable(), update.getColumns());
     apply
         .append("    set NEW.").append(sysPeriod).append("_start = now(6)").endOfStatement()
         .append("end$$").newLine();
   }
 
-  private void addBeforeDelete(DdlBuffer apply, String triggerName, String baseTable, String historyTable, List<String> includedColumns) throws IOException {
+  private void addBeforeDelete(String triggerName, DbTriggerUpdate update) throws IOException {
 
+    DdlBuffer apply = update.historyBuffer();
     apply
         .append("delimiter $$").newLine()
-        .append("create trigger ").append(triggerName).append(" before delete on ").append(baseTable)
+        .append("create trigger ").append(triggerName).append(" before delete on ").append(update.getBaseTable())
         .append(" for each row begin").newLine();
-    appendInsertIntoHistory(apply, historyTable, includedColumns);
+    appendInsertIntoHistory(apply, update.getHistoryTable(), update.getColumns());
     apply.append("end$$").newLine();
   }
 

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

@@ -35,7 +35,7 @@ public class NoHistorySupportDdl implements PlatformHistoryDdl {
   }
 
   @Override
-  public void regenerateHistoryTriggers(DdlWrite write, HistoryTableUpdate update) {
+  public void updateTriggers(DdlWrite write, HistoryTableUpdate update) {
     // does nothing
   }
 }

src/main/java/com/avaje/ebean/dbmigration/ddlgeneration/platform/Oracle10Ddl.java

@@ -1,15 +1,14 @@
 package com.avaje.ebean.dbmigration.ddlgeneration.platform;
 
-import com.avaje.ebean.config.dbplatform.DbIdentity;
-import com.avaje.ebean.config.dbplatform.DbTypeMap;
+import com.avaje.ebean.config.dbplatform.DatabasePlatform;
 
 /**
  * Oracle platform specific DDL.
  */
 public class Oracle10Ddl extends PlatformDdl {
 
-  public Oracle10Ddl(DbTypeMap platformTypes, DbIdentity dbIdentity) {
-    super(platformTypes, dbIdentity);
+  public Oracle10Ddl(DatabasePlatform platform) {
+    super(platform);
     this.dropTableIfExists = "drop table ";
     this.dropSequenceIfExists = "drop sequence ";
     this.dropTableCascade = " cascade constraints purge";

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

@@ -2,8 +2,9 @@ package com.avaje.ebean.dbmigration.ddlgeneration.platform;
 
 import com.avaje.ebean.config.DbConstraintNaming;
 import com.avaje.ebean.config.ServerConfig;
+import com.avaje.ebean.config.dbplatform.DatabasePlatform;
+import com.avaje.ebean.config.dbplatform.DbDefaultValue;
 import com.avaje.ebean.config.dbplatform.DbIdentity;
-import com.avaje.ebean.config.dbplatform.DbTypeMap;
 import com.avaje.ebean.config.dbplatform.IdType;
 import com.avaje.ebean.dbmigration.ddlgeneration.BaseDdlHandler;
 import com.avaje.ebean.dbmigration.ddlgeneration.DdlBuffer;
@@ -85,9 +86,17 @@ public class PlatformDdl {
 
   protected DbConstraintNaming naming;
 
-  public PlatformDdl(DbTypeMap platformTypes, DbIdentity dbIdentity) {
-    this.dbIdentity = dbIdentity;
-    this.typeConverter = new PlatformTypeConverter(platformTypes);
+  /**
+   * Generally not desired as then they are not named (used with SQLite).
+   */
+  protected boolean inlineForeignKeys;
+
+  protected final DbDefaultValue dbDefaultValue;
+
+  public PlatformDdl(DatabasePlatform platform) {
+    this.dbIdentity = platform.getDbIdentity();
+    this.dbDefaultValue = platform.getDbDefaultValue();
+    this.typeConverter = new PlatformTypeConverter(platform.getDbTypeMap());
   }
 
   /**
@@ -128,6 +137,14 @@ public class PlatformDdl {
     return inlineComments;
   }
 
+  /**
+   * Return true if foreign key reference constraints need to inlined with create table.
+   * Ideally we don't do this as then the constraints are not named. Do this for SQLite.
+   */
+  public boolean isInlineForeignKeys() {
+    return inlineForeignKeys;
+  }
+
   /**
    * Write all the table columns converting to platform types as necessary.
    */
@@ -152,6 +169,12 @@ public class PlatformDdl {
     buffer.append("  ");
     buffer.append(lowerColumnName(column.getName()), 29);
     buffer.append(platformType);
+    if (!typeContainsDefault(platformType)) {
+      String defaultValue = convertDefaultValue(column.getDefaultValue());
+      if (defaultValue != null) {
+        buffer.append(" default ").append(defaultValue);
+      }
+    }
     if (isTrue(column.isNotnull()) || isTrue(column.isPrimaryKey())) {
       buffer.append(" not null");
     }
@@ -160,6 +183,20 @@ public class PlatformDdl {
     // so that the database can potentially provide a nice SQL error
   }
 
+  /**
+   * Return true if the type definition already contains a default value.
+   */
+  private boolean typeContainsDefault(String platformType) {
+    return platformType.toLowerCase().contains(" default");
+  }
+
+  /**
+   * Convert the DB column default literal to platform specific.
+   */
+  private String convertDefaultValue(String dbDefault) {
+    return dbDefaultValue.convert(dbDefault);
+  }
+
   /**
    * Return the drop foreign key clause.
    */
@@ -200,7 +237,7 @@ public class PlatformDdl {
    * Regenerate the history triggers (or function) due to a column being added/dropped/excluded or included.
    */
   public void regenerateHistoryTriggers(DdlWrite write, HistoryTableUpdate update) throws IOException {
-    historyDdl.regenerateHistoryTriggers(write, update);
+    historyDdl.updateTriggers(write, update);
   }
 
   /**
@@ -255,6 +292,20 @@ public class PlatformDdl {
     return buffer.toString();
   }
 
+  /**
+   * Return the foreign key constraint when used inline with create table.
+   */
+  public String tableInlineForeignKey(String[] columns, String refTable, String[] refColumns) {
+
+    StringBuilder buffer = new StringBuilder(90);
+    buffer.append("foreign key");
+    appendColumns(columns, buffer);
+    buffer.append(" references ").append(lowerTableName(refTable));
+    appendColumns(refColumns, buffer);
+    appendWithSpace(foreignKeyRestrict, buffer);
+    return buffer.toString();
+  }
+
   /**
    * Add foreign key.
    */

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

@@ -36,5 +36,5 @@ public interface PlatformHistoryDdl {
   /**
    * Regenerate the history triggers/stored function due to column added/dropped/included or excluded.
    */
-  void regenerateHistoryTriggers(DdlWrite write, HistoryTableUpdate baseTable) throws IOException;
+  void updateTriggers(DdlWrite write, HistoryTableUpdate baseTable) throws IOException;
 }

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

@@ -1,15 +1,14 @@
 package com.avaje.ebean.dbmigration.ddlgeneration.platform;
 
-import com.avaje.ebean.config.dbplatform.DbIdentity;
-import com.avaje.ebean.config.dbplatform.DbTypeMap;
+import com.avaje.ebean.config.dbplatform.DatabasePlatform;
 
 /**
  * Postgres specific DDL.
  */
 public class PostgresDdl extends PlatformDdl {
 
-  public PostgresDdl(DbTypeMap platformTypes, DbIdentity dbIdentity) {
-    super(platformTypes, dbIdentity);
+  public PostgresDdl(DatabasePlatform platform) {
+    super(platform);
     this.historyDdl = new PostgresHistoryDdl();
     this.dropTableCascade = " cascade";
     this.columnSetType = "type ";

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

@@ -45,6 +45,11 @@ public class PostgresHistoryDdl extends DbTriggerBasedHistoryDdl {
     }
   }
 
+  @Override
+  protected void appendSysPeriodColumns(DdlBuffer apply, String prefix) throws IOException {
+    appendColumnName(apply, prefix, sysPeriod);
+  }
+
   @Override
   protected void dropSysPeriodColumns(DdlBuffer buffer, String baseTableName) throws IOException {
     buffer.append("alter table ").append(baseTableName).append(" drop column ").append(sysPeriod).endOfStatement();
@@ -72,7 +77,7 @@ public class PostgresHistoryDdl extends DbTriggerBasedHistoryDdl {
     buffer.end();
   }
 
-  protected void addFunction(DdlBuffer apply, String procedureName, String historyTable, List<String> includedColumns) throws IOException {
+  protected void createOrReplaceFunction(DdlBuffer apply, String procedureName, String historyTable, List<String> includedColumns) throws IOException {
     apply
         .append("create or replace function ").append(procedureName).append("() returns trigger as $$").newLine()
         .append("begin").newLine();
@@ -80,7 +85,7 @@ public class PostgresHistoryDdl extends DbTriggerBasedHistoryDdl {
         .append("  if (TG_OP = 'UPDATE') then").newLine();
     appendInsertIntoHistory(apply, historyTable, includedColumns);
     apply
-        .append("    NEW.").append(sysPeriod).append(" = tstzrange(CURRENT_TIMESTAMP,null);").newLine()
+        .append("    NEW.").append(sysPeriod).append(" = tstzrange(").append(currentTimestamp).append(",null);").newLine()
         .append("    return new;").newLine();
     apply
         .append("  elsif (TG_OP = 'DELETE') then").newLine();
@@ -96,40 +101,36 @@ public class PostgresHistoryDdl extends DbTriggerBasedHistoryDdl {
   }
 
   @Override
-  protected void regenerateHistoryTriggers(DdlWrite writer, MTable table, HistoryTableUpdate update) throws IOException {
-
-    // just replace the stored function with 'create or replace'
-    addStoredFunction(writer, table, update);
-  }
-
-  @Override
-  protected void addStoredFunction(DdlWrite writer, MTable table, HistoryTableUpdate update) throws IOException {
+  protected void createStoredFunction(DdlWrite writer, MTable table) throws IOException {
 
     String procedureName = procedureName(table.getName());
     String historyTable = historyTableName(table.getName());
 
-    List<String> includedColumns = includedColumnNames(table);
+    List<String> columnNames = columnNamesForApply(table);
+    createOrReplaceFunction(writer.applyHistory(), procedureName, historyTable, columnNames);
+  }
 
-    DdlBuffer apply = writer.applyHistory();
+  @Override
+  protected void updateHistoryTriggers(DbTriggerUpdate update) throws IOException {
 
-    if (update != null) {
-      apply.append("-- Regenerated ").append(procedureName).newLine();
-      apply.append("-- changes: ").append(update.description()).newLine();
-    }
+    String procedureName = procedureName(update.getBaseTable());
 
-    addFunction(apply, procedureName, historyTable, includedColumns);
+    recreateHistoryView(update);
+    createOrReplaceFunction(update.historyBuffer(), procedureName, update.getHistoryTable(), update.getColumns());
+  }
 
+  /**
+   * For postgres we need to drop and recreate the view. Well, we could add columns to the end of the view
+   * but otherwise we need to drop and create it.
+   */
+  private void recreateHistoryView(DbTriggerUpdate update) throws IOException {
 
-    if (update != null) {
-      // put a reverted version into the rollback buffer
-      update.toRevertedColumns(includedColumns);
+    DdlBuffer buffer = update.dropDependencyBuffer();
+    // we need to drop the view early/first before any changes to the tables etc
+    buffer.append("drop view if exists ").append(update.getBaseTable()).append(viewSuffix).endOfStatement();
 
-      DdlBuffer rollback = writer.rollback();
-      rollback.append("-- Revert regenerated ").append(procedureName).newLine();
-      rollback.append("-- revert changes: ").append(update.description()).newLine();
-
-      addFunction(rollback, procedureName, historyTable, includedColumns);
-    }
+    // recreate the view with specific columns specified (the columns generally are not dropped until later)
+    createWithHistoryView(update);
   }
 
   @Override
@@ -137,7 +138,7 @@ public class PostgresHistoryDdl extends DbTriggerBasedHistoryDdl {
 
     buffer.append("    insert into ").append(historyTable).append(" (").append(sysPeriod).append(",");
     appendColumnNames(buffer, columns, "");
-    buffer.append(") values (tstzrange(lower(OLD.").append(sysPeriod).append("), current_timestamp), ");
+    buffer.append(") values (tstzrange(lower(OLD.").append(sysPeriod).append("), ").append(currentTimestamp).append("), ");
     appendColumnNames(buffer, columns, "OLD.");
     buffer.append(");").newLine();
   }

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

@@ -1,16 +1,34 @@
 package com.avaje.ebean.dbmigration.ddlgeneration.platform;
 
-import com.avaje.ebean.config.dbplatform.DbIdentity;
-import com.avaje.ebean.config.dbplatform.DbTypeMap;
+import com.avaje.ebean.config.dbplatform.DatabasePlatform;
+import com.avaje.ebean.dbmigration.ddlgeneration.DdlBuffer;
+
+import java.io.IOException;
 
 /**
  * DB2 platform specific DDL.
  */
 public class SQLiteDdl extends PlatformDdl {
 
-  public SQLiteDdl(DbTypeMap platformTypes, DbIdentity dbIdentity) {
-    super(platformTypes, dbIdentity);
-    this.identitySuffix = " autoincrement";
+  public SQLiteDdl(DatabasePlatform platform) {
+    super(platform);
+    this.identitySuffix = "";
+    this.inlineForeignKeys = true;
+  }
+
+  @Override
+  public void addTableComment(DdlBuffer apply, String tableName, String tableComment) throws IOException {
+    // not supported
+  }
+
+  @Override
+  public void addColumnComment(DdlBuffer apply, String table, String column, String comment) throws IOException {
+    // not supported
+  }
+
+  @Override
+  public String alterTableAddForeignKey(String tableName, String fkName, String[] columns, String refTable, String[] refColumns) {
+    // not supported
+    return null;
   }
-  
 }

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

@@ -5,7 +5,7 @@ import com.avaje.ebean.config.dbplatform.DbTypeMap;
 
 /**
  * Converts a logical column definition into platform specific one.
- *
+ * <p>
  * This translates standard sql types into platform specific ones.
  */
 public class PlatformTypeConverter {
@@ -44,20 +44,21 @@ public class PlatformTypeConverter {
       return columnDefinition;
     }
 
-    String type = columnDefinition.substring(0,open);
+    String suffix = close + 1 < columnDefinition.length() ? columnDefinition.substring(close + 1) : "";
+    String type = columnDefinition.substring(0, open);
     try {
       DbType dbType = platformTypes.lookup(type);
-      int comma = columnDefinition.indexOf(',',open);
+      int comma = columnDefinition.indexOf(',', open);
       if (comma > -1) {
         // scale and precision - decimal(10,4)
-        int scale = Integer.parseInt(columnDefinition.substring(open+1, comma));
-        int precision = Integer.parseInt(columnDefinition.substring(comma+1, close));
-        return  dbType.renderType(scale,precision);
+        int scale = Integer.parseInt(columnDefinition.substring(open + 1, comma));
+        int precision = Integer.parseInt(columnDefinition.substring(comma + 1, close));
+        return dbType.renderType(scale, precision) + suffix;
 
       } else {
         // scale - varchar(10)
-        int scale = Integer.parseInt(columnDefinition.substring(open+1, close));
-        return  dbType.renderType(scale,0);
+        int scale = Integer.parseInt(columnDefinition.substring(open + 1, close));
+        return dbType.renderType(scale, 0) + suffix;
       }
 
     } catch (IllegalArgumentException e) {
@@ -73,7 +74,7 @@ public class PlatformTypeConverter {
 
     try {
       DbType dbType = platformTypes.lookup(columnDefinition);
-      return  dbType.renderType(0,0);
+      return dbType.renderType(0, 0);
 
     } catch (IllegalArgumentException e) {
       // assume already platform specific, leave as is

src/main/java/com/avaje/ebean/dbmigration/migration/ChangeSet.java

@@ -27,6 +27,8 @@ import javax.xml.bind.annotation.XmlType;
  *         </choice>
  *       </sequence>
  *       <attribute name="type" use="required" type="{http://ebean-orm.github.io/xml/ns/dbmigration}changeSetType" />
+ *       <attribute name="dropsFor" type="{http://www.w3.org/2001/XMLSchema}string" />
+ *       <attribute name="suppressDropsForever" type="{http://www.w3.org/2001/XMLSchema}boolean" />
  *       <attribute name="generated" type="{http://www.w3.org/2001/XMLSchema}boolean" />
  *       <attribute name="author" type="{http://www.w3.org/2001/XMLSchema}string" />
  *       <attribute name="comment" type="{http://www.w3.org/2001/XMLSchema}string" />
@@ -62,6 +64,10 @@ public class ChangeSet {
     protected List<Object> changeSetChildren;
     @XmlAttribute(name = "type", required = true)
     protected ChangeSetType type;
+    @XmlAttribute(name = "dropsFor")
+    protected String dropsFor;
+    @XmlAttribute(name = "suppressDropsForever")
+    protected Boolean suppressDropsForever;
     @XmlAttribute(name = "generated")
     protected Boolean generated;
     @XmlAttribute(name = "author")
@@ -134,6 +140,54 @@ public class ChangeSet {
         this.type = value;
     }
 
+    /**
+     * Gets the value of the dropsFor property.
+     * 
+     * @return
+     *     possible object is
+     *     {@link String }
+     *     
+     */
+    public String getDropsFor() {
+        return dropsFor;
+    }
+
+    /**
+     * Sets the value of the dropsFor property.
+     * 
+     * @param value
+     *     allowed object is
+     *     {@link String }
+     *     
+     */
+    public void setDropsFor(String value) {
+        this.dropsFor = value;
+    }
+
+    /**
+     * Gets the value of the suppressDropsForever property.
+     * 
+     * @return
+     *     possible object is
+     *     {@link Boolean }
+     *     
+     */
+    public Boolean isSuppressDropsForever() {
+        return suppressDropsForever;
+    }
+
+    /**
+     * Sets the value of the suppressDropsForever property.
+     * 
+     * @param value
+     *     allowed object is
+     *     {@link Boolean }
+     *     
+     */
+    public void setSuppressDropsForever(Boolean value) {
+        this.suppressDropsForever = value;
+    }
+
     /**
      * Gets the value of the generated property.
      * 

src/main/java/com/avaje/ebean/dbmigration/migration/ChangeSetType.java

@@ -15,7 +15,7 @@ import javax.xml.bind.annotation.XmlType;
  * <simpleType name="changeSetType">
  *   <restriction base="{http://www.w3.org/2001/XMLSchema}string">
  *     <enumeration value="apply"/>
- *     <enumeration value="drop"/>
+ *     <enumeration value="pendingDrops"/>
  *     <enumeration value="baseline"/>
  *   </restriction>
  * </simpleType>
@@ -28,8 +28,8 @@ public enum ChangeSetType {
 
     @XmlEnumValue("apply")
     APPLY("apply"),
-    @XmlEnumValue("drop")
-    DROP("drop"),
+    @XmlEnumValue("pendingDrops")
+    PENDING_DROPS("pendingDrops"),
     @XmlEnumValue("baseline")
     BASELINE("baseline");
     private final String value;

src/main/java/com/avaje/ebean/dbmigration/migration/CreateTable.java

@@ -30,6 +30,7 @@ import javax.xml.bind.annotation.XmlType;
  *       <attGroup ref="{http://ebean-orm.github.io/xml/ns/dbmigration}tablespaceAttributes"/>
  *       <attribute name="name" use="required" type="{http://www.w3.org/2001/XMLSchema}string" />
  *       <attribute name="withHistory" type="{http://www.w3.org/2001/XMLSchema}boolean" />
+ *       <attribute name="draft" type="{http://www.w3.org/2001/XMLSchema}boolean" />
  *       <attribute name="identityType" type="{http://ebean-orm.github.io/xml/ns/dbmigration}identityType" />
  *       <attribute name="sequenceName" type="{http://www.w3.org/2001/XMLSchema}string" />
  *       <attribute name="sequenceInitial" type="{http://www.w3.org/2001/XMLSchema}positiveInteger" />
@@ -59,6 +60,8 @@ public class CreateTable {
     protected String name;
     @XmlAttribute(name = "withHistory")
     protected Boolean withHistory;
+    @XmlAttribute(name = "draft")
+    protected Boolean draft;
     @XmlAttribute(name = "identityType")
     protected IdentityType identityType;
     @XmlAttribute(name = "sequenceName")
@@ -213,6 +216,30 @@ public class CreateTable {
         this.withHistory = value;
     }
 
+    /**
+     * Gets the value of the draft property.
+     * 
+     * @return
+     *     possible object is
+     *     {@link Boolean }
+     *     
+     */
+    public Boolean isDraft() {
+        return draft;
+    }
+
+    /**
+     * Sets the value of the draft property.
+     * 
+     * @param value
+     *     allowed object is
+     *     {@link Boolean }
+     *     
+     */
+    public void setDraft(Boolean value) {
+        this.draft = value;
+    }
+
     /**
      * Gets the value of the identityType property.
      * 

src/main/java/com/avaje/ebean/dbmigration/migrationreader/MigrationXmlWriter.java

@@ -7,22 +7,46 @@ import javax.xml.bind.JAXBContext;
 import javax.xml.bind.JAXBException;
 import javax.xml.bind.Marshaller;
 import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
 
 /**
  * Simple writer for output of the Migration/ChangeSet as an XML document.
  */
 public class MigrationXmlWriter {
 
+  private final String comment;
+
+  public MigrationXmlWriter(String comment) {
+    this.comment = comment;
+  }
+
   /**
    * Write a Migration to a file as an xml document to the file.
    */
   public void write(Migration migration, File file) {
 
     try {
+
+      FileWriter writer = new FileWriter(file);
+      writer.write("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n");
+      if (comment != null) {
+        writer.write("<!-- ");
+        writer.write(comment);
+        writer.write(" -->\n");
+      }
+
       JAXBContext jaxbContext = JAXBContext.newInstance(Migration.class);
       Marshaller marshaller = jaxbContext.createMarshaller();
-      marshaller.setProperty( Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
-      marshaller.marshal(migration, file);
+      marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
+      marshaller.setProperty(Marshaller.JAXB_FRAGMENT, Boolean.TRUE);
+
+      marshaller.marshal(migration, writer);
+
+      writer.close();
+
+    } catch (IOException e) {
+      throw new RuntimeException(e);
 
     } catch (JAXBException e) {
       throw new RuntimeException(e);

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

@@ -117,13 +117,13 @@ public class CurrentModel {
   /**
    * Return the 'Drop' DDL.
    */
-  public String getDropDdl() throws IOException {
+  public String getDropAllDdl() throws IOException {
 
     createDdl();
 
     StringBuilder ddl = new StringBuilder(2000);
-    ddl.append(write.rollbackForeignKeys().getBuffer());
-    ddl.append(write.rollback().getBuffer());
+    ddl.append(write.dropAllForeignKeys().getBuffer());
+    ddl.append(write.dropAll().getBuffer());
 
     return ddl.toString();
   }
@@ -159,12 +159,7 @@ public class CurrentModel {
     ModelDiff diff = new ModelDiff();
     diff.compareTo(model);
 
-    List<Object> applyChanges = diff.getApplyChanges();
-
-    // put the changes into a ChangeSet
-    ChangeSet applyChangeSet = new ChangeSet();
-    applyChangeSet.getChangeSetChildren().addAll(applyChanges);
-    return applyChangeSet;
+    return diff.getApplyChangeSet();
   }
 
 }

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

@@ -283,7 +283,6 @@ public class MColumn {
   /**
    * Compare the column meta data and return true if there is a change that means
    * the history table column needs
-
    */
   public void compare(ModelDiff modelDiff, MTable table, MColumn newColumn) {
 

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

@@ -10,13 +10,14 @@ import com.avaje.ebean.dbmigration.migration.DropHistoryTable;
 import com.avaje.ebean.dbmigration.migration.DropTable;
 import com.avaje.ebean.dbmigration.migration.IdentityType;
 import com.avaje.ebean.dbmigration.migration.UniqueConstraint;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.math.BigInteger;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
-import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -38,6 +39,8 @@ import java.util.Set;
  */
 public class MTable {
 
+  private static final Logger logger = LoggerFactory.getLogger(MTable.class);
+
   /**
    * Table name.
    */
@@ -118,6 +121,8 @@ public class MTable {
    */
   private AddColumn addColumn;
 
+  private List<String> droppedColumns = new ArrayList<String>();
+
   /**
    * Create a copy of this table structure as a 'draft' table.
    *
@@ -126,14 +131,14 @@ public class MTable {
    */
   public MTable createDraftTable() {
 
-    draftTable = new MTable(name+"_draft");
+    draftTable = new MTable(name + "_draft");
     draftTable.draft = true;
     draftTable.whenCreatedColumn = whenCreatedColumn;
     // compoundKeys
     // compoundUniqueConstraints
     draftTable.identityType = identityType;
 
-    for (MColumn col: columns.values()) {
+    for (MColumn col : allColumns()) {
       draftTable.addColumn(col.copyForDraft());
     }
 
@@ -150,6 +155,7 @@ public class MTable {
     this.tablespace = createTable.getTablespace();
     this.indexTablespace = createTable.getIndexTablespace();
     this.withHistory = Boolean.TRUE.equals(createTable.isWithHistory());
+    this.draft = Boolean.TRUE.equals(createTable.isDraft());
     this.sequenceName = createTable.getSequenceName();
     this.sequenceInitial = toInt(createTable.getSequenceInitial());
     this.sequenceAllocate = toInt(createTable.getSequenceAllocate());
@@ -194,8 +200,11 @@ public class MTable {
     if (withHistory) {
       createTable.setWithHistory(Boolean.TRUE);
     }
+    if (draft) {
+      createTable.setDraft(Boolean.TRUE);
+    }
 
-    for (MColumn column : this.columns.values()) {
+    for (MColumn column : allColumns()) {
       // filter out draftOnly columns from the base table
       if (draft || !column.isDraftOnly()) {
         createTable.getColumn().add(column.createColumn());
@@ -244,26 +253,33 @@ public class MTable {
 
     addColumn = null;
 
-    Set<String> mappedColumns = new LinkedHashSet<String>();
+    Map<String, MColumn> newColumnMap = newTable.getColumns();
 
-    Collection<MColumn> newColumns = newTable.getColumns().values();
-    for (MColumn newColumn : newColumns) {
-      MColumn localColumn = columns.get(newColumn.getName());
+    // compare newColumns to existing columns (look for new and diff columns)
+    for (MColumn newColumn : newColumnMap.values()) {
+      MColumn localColumn = getColumn(newColumn.getName());
       if (localColumn == null) {
-        diffNewColumn(newColumn);
+        // can ignore if draftOnly column and non-draft table
+        if (!newColumn.isDraftOnly() || draft) {
+          diffNewColumn(newColumn);
+        }
       } else {
-        // note that if there are alter column changes in here then
-        // the table withHistory is taken into account
         localColumn.compare(modelDiff, this, newColumn);
-        mappedColumns.add(newColumn.getName());
       }
     }
 
-    Collection<MColumn> existingColumns = columns.values();
-    for (MColumn existingColumn : existingColumns) {
-      if (!mappedColumns.contains(existingColumn.getName())) {
-        diffDropColumn(modelDiff, existingColumn);
+    // compare existing columns (look for dropped columns)
+    int columnPosition = 0;
+    for (MColumn existingColumn : allColumns()) {
+      MColumn newColumn = newColumnMap.get(existingColumn.getName());
+      if (newColumn == null) {
+        diffDropColumn(modelDiff, existingColumn, columnPosition, newTable);
+      } else if (newColumn.isDraftOnly() && !draft) {
+        // effectively a drop column (draft only column on a non-draft table)
+        logger.trace("... drop column {} from table {} as now draftOnly", newColumn.getName(), name);
+        diffDropColumn(modelDiff, existingColumn, columnPosition, newTable);
       }
+      columnPosition++;
     }
 
     if (addColumn != null) {
@@ -287,7 +303,7 @@ public class MTable {
   public void apply(AlterColumn alterColumn) {
     checkTableName(alterColumn.getTableName());
     String columnName = alterColumn.getColumnName();
-    MColumn existingColumn = columns.get(columnName);
+    MColumn existingColumn = getColumn(columnName);
     if (existingColumn == null) {
       throw new IllegalStateException("Column [" + columnName + "] does not exist for AlterColumn change?");
     }
@@ -299,7 +315,10 @@ public class MTable {
    */
   public void apply(DropColumn dropColumn) {
     checkTableName(dropColumn.getTableName());
-    columns.remove(dropColumn.getColumnName());
+    MColumn removed = columns.remove(dropColumn.getColumnName());
+    if (removed == null) {
+      throw new IllegalStateException("Column [" + dropColumn.getColumnName() + "] does not exist for DropColumn change on table [" + dropColumn.getTableName() + "]?");
+    }
   }
 
   public String getName() {
@@ -313,10 +332,6 @@ public class MTable {
     return draft;
   }
 
-  public String getPkName() {
-    return pkName;
-  }
-
   public void setPkName(String pkName) {
     this.pkName = pkName;
   }
@@ -341,11 +356,43 @@ public class MTable {
     return withHistory;
   }
 
-  public void setWithHistory(boolean withHistory) {
+  public MTable setWithHistory(boolean withHistory) {
     this.withHistory = withHistory;
+    return this;
   }
 
-  public Map<String, MColumn> getColumns() {
+  public List<String> allHistoryColumns(boolean includeDropped) {
+
+    List<String> columnNames = new ArrayList<String>(columns.size());
+    for (MColumn column : columns.values()) {
+      if (column.isIncludeInHistory()) {
+        columnNames.add(column.getName());
+      }
+    }
+    if (includeDropped && !droppedColumns.isEmpty()) {
+      for (String droppedColumn : droppedColumns) {
+        columnNames.add(droppedColumn);
+      }
+    }
+    return columnNames;
+  }
+
+  /**
+   * Return all the columns (excluding columns marked as dropped).
+   */
+  public Collection<MColumn> allColumns() {
+
+    return columns.values();
+  }
+
+  /**
+   * Return the column by name.
+   */
+  public MColumn getColumn(String name) {
+    return columns.get(name);
+  }
+
+  private Map<String, MColumn> getColumns() {
     return columns;
   }
 
@@ -357,26 +404,14 @@ public class MTable {
     return compoundKeys;
   }
 
-  public String getSequenceName() {
-    return sequenceName;
-  }
-
   public void setSequenceName(String sequenceName) {
     this.sequenceName = sequenceName;
   }
 
-  public int getSequenceInitial() {
-    return sequenceInitial;
-  }
-
   public void setSequenceInitial(int sequenceInitial) {
     this.sequenceInitial = sequenceInitial;
   }
 
-  public int getSequenceAllocate() {
-    return sequenceAllocate;
-  }
-
   public void setSequenceAllocate(int sequenceAllocate) {
     this.sequenceAllocate = sequenceAllocate;
   }
@@ -399,22 +434,12 @@ public class MTable {
     this.identityType = identityType;
   }
 
-  /**
-   * Returns the identity type to use for this table.
-   * <p>
-   * If set then this overrides the platform default so for UUID generated values
-   * or DB's supporting both sequences and autoincrement.
-   */
-  public IdentityType getIdentityType() {
-    return identityType;
-  }
-
   /**
    * Return the list of columns that make the primary key.
    */
   public List<MColumn> primaryKeyColumns() {
     List<MColumn> pk = new ArrayList<MColumn>(3);
-    for (MColumn column : columns.values()) {
+    for (MColumn column : allColumns()) {
       if (column.isPrimaryKey()) {
         pk.add(column);
       }
@@ -473,7 +498,7 @@ public class MTable {
    */
   public MColumn addColumn(String dbCol, String columnDefn, boolean notnull) {
 
-    MColumn existingColumn = columns.get(dbCol);
+    MColumn existingColumn = getColumn(dbCol);
     if (existingColumn != null) {
       if (notnull) {
         existingColumn.setNotnull(true);
@@ -507,12 +532,12 @@ public class MTable {
   /**
    * Add a 'drop column' to the diff.
    */
-  private void diffDropColumn(ModelDiff modelDiff, MColumn existingColumn) {
+  private void diffDropColumn(ModelDiff modelDiff, MColumn existingColumn, int columnPosition, MTable newTable) {
 
     DropColumn dropColumn = new DropColumn();
     dropColumn.setTableName(name);
     dropColumn.setColumnName(existingColumn.getName());
-    if (withHistory) {
+    if (withHistory && !existingColumn.isHistoryExclude()) {
       // These dropColumns should occur on the history
       // table as well as the base table
       dropColumn.setWithHistory(Boolean.TRUE);
@@ -521,6 +546,16 @@ public class MTable {
     modelDiff.addDropColumn(dropColumn);
   }
 
+  /**
+   * Register a pending un-applied drop column.
+   * <p>
+   * This means this column still needs to be included in history views/triggers etc even
+   * though it is not part of the current model.
+   */
+  public void registerPendingDropColumn(String columnName) {
+    droppedColumns.add(columnName);
+  }
+
   private int toInt(BigInteger value) {
     return (value == null) ? 0 : value.intValue();
   }
@@ -532,7 +567,7 @@ public class MTable {
   /**
    * Check if there are duplicate foreign keys.
    * <p>
-   *   This can occur when an ManyToMany relates back to itself.
+   * This can occur when an ManyToMany relates back to itself.
    * </p>
    */
   public void checkDuplicateForeignKeys() {
@@ -563,7 +598,7 @@ public class MTable {
    */
   public void adjustReferences(ModelContainer modelContainer) {
 
-    Collection<MColumn> cols = columns.values();
+    Collection<MColumn> cols = allColumns();
     for (MColumn col : cols) {
       String references = col.getReferences();
       if (references != null) {
@@ -583,7 +618,7 @@ public class MTable {
    */
   private String extractBaseTable(String references) {
     int lastDot = references.lastIndexOf('.');
-    return references.substring(0,lastDot);
+    return references.substring(0, lastDot);
   }
 
   /**
@@ -592,7 +627,7 @@ public class MTable {
    */
   private String deriveReferences(String references, String draftTableName) {
     int lastDot = references.lastIndexOf('.');
-    return draftTableName+"."+references.substring(lastDot+1);
+    return draftTableName + "." + references.substring(lastDot + 1);
   }
 
 }

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

@@ -52,7 +52,7 @@ public class MigrationModel {
     List<MigrationResource> resources = new ArrayList<MigrationResource>();
 
     for (File xmlFile: xmlFiles) {
-      resources.add(new MigrationResource(xmlFile));
+      resources.add(new MigrationResource(xmlFile, createVersion(xmlFile)));
     }
 
     // sort into version order before applying
@@ -60,7 +60,7 @@ public class MigrationModel {
 
     for (MigrationResource migrationResource: resources) {
       logger.debug("read {}", migrationResource);
-      model.apply(migrationResource.read());
+      model.apply(migrationResource.read(), migrationResource.getVersion());
     }
 
     // remember the last version
@@ -69,6 +69,12 @@ public class MigrationModel {
     }
   }
 
+  private MigrationVersion createVersion(File xmlFile) {
+    String fileName = xmlFile.getName();
+    String versionName = fileName.substring(0, fileName.length() - modelSuffix.length());
+    return MigrationVersion.parse(versionName);
+  }
+
   public String getNextVersion(String initialVersion) {
 
     return lastVersion == null ? initialVersion : lastVersion.nextVersion();

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

@@ -17,9 +17,9 @@ public class MigrationResource implements Comparable<MigrationResource> {
   /**
    * Construct with a migration xml file.
    */
-  public MigrationResource(File migrationFile) {
+  public MigrationResource(File migrationFile, MigrationVersion version) {
     this.migrationFile = migrationFile;
-    this.version = MigrationVersion.parse(migrationFile.getName());
+    this.version = version;
   }
 
   public String toString() {

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

@@ -1,5 +1,7 @@
 package com.avaje.ebean.dbmigration.model;
 
+import java.util.Arrays;
+
 /**
  * The version of a migration used so that migrations are processed in order.
  */
@@ -15,23 +17,74 @@ public class MigrationVersion implements Comparable<MigrationVersion> {
    */
   private final int[] ordering;
 
-  private MigrationVersion(String raw, int[] ordering) {
+  private final boolean[] underscores;
+
+  private final String comment;
+
+  private MigrationVersion(String raw, int[] ordering, boolean[] underscores, String comment) {
     this.raw = raw;
     this.ordering = ordering;
+    this.underscores = underscores;
+    this.comment = comment;
   }
 
   public String toString() {
     return raw;
   }
 
+  /**
+   * Return the version comment.
+   */
+  public String getComment() {
+    return comment;
+  }
 
+  /**
+   * Return the version in raw form.
+   */
+  public String getRaw() {
+    return raw;
+  }
+
+  /**
+   * Return the trimmed version excluding version comment and un-parsable string.
+   */
+  public String asString() {
+    return formattedVersion(false, false);
+  }
+
+  /**
+   * Return the trimmed version with any underscores replaced with '.'
+   */
+  public String normalised() {
+    return formattedVersion(true, false);
+  }
+
+  /**
+   * Return the next version based on this version.
+   */
   public String nextVersion() {
+    return formattedVersion(false, true);
+  }
+
+  /**
+   * Returns the version part of the string.
+   *
+   * Normalised means always use '.' delimiters (no underscores).
+   * NextVersion means bump/increase the last version number by 1.
+   */
+  private String formattedVersion(boolean normalised, boolean nextVersion) {
     StringBuilder sb = new StringBuilder();
     for (int i = 0; i < ordering.length; i++) {
-      if (i < ordering.length -1 ) {
-        sb.append(ordering[i]).append(".");
+      if (i < ordering.length - 1) {
+        sb.append(ordering[i]);
+        if (normalised) {
+          sb.append('.');
+        } else {
+          sb.append(underscores[i] ? '_' : '.');
+        }
       } else {
-        sb.append(ordering[i]+1);
+        sb.append((nextVersion) ? ordering[i] + 1 : ordering[i]);
       }
     }
     return sb.toString();
@@ -54,33 +107,54 @@ public class MigrationVersion implements Comparable<MigrationVersion> {
     return 0;
   }
 
+  /**
+   * Parse the raw version string and just return the leading version number;
+   */
+  public static String trim(String raw) {
+    return parse(raw).asString();
+  }
+
   /**
    * Parse the raw version string into a MigrationVersion.
    */
   public static MigrationVersion parse(String raw) {
 
-    String value = raw.replace("__",".");
-    value = value.replace('_','.');
+    String comment = "";
+    String value = raw;
+    int commentStart = raw.indexOf("__");
+    if (commentStart > -1) {
+      // trim off the trailing comment
+      comment = raw.substring(commentStart + 2);
+      value = value.substring(0, commentStart);
+    }
+
+    value = value.replace('_', '.');
 
     String[] sections = value.split("\\.");
 
+    boolean[] underscores = new boolean[sections.length];
     int[] ordering = new int[sections.length];
 
+    int delimiterPos = 0;
     int stopIndex = 0;
     for (int i = 0; i < sections.length; i++) {
       try {
         ordering[i] = Integer.parseInt(sections[i]);
         stopIndex++;
+
+        delimiterPos += sections[i].length();
+        underscores[i] = (delimiterPos < raw.length() - 1 && raw.charAt(delimiterPos) == '_');
+        delimiterPos++;
       } catch (NumberFormatException e) {
         // stop parsing
         break;
       }
     }
 
-    int[] actualOrder = new int[stopIndex];
-    System.arraycopy(ordering, 0, actualOrder, 0, stopIndex);
+    int[] actualOrder = Arrays.copyOf(ordering, stopIndex);
+    boolean[] actualUnderscores = Arrays.copyOf(underscores, stopIndex);
 
-    return new MigrationVersion(raw, actualOrder);
+    return new MigrationVersion(raw, actualOrder, actualUnderscores, comment);
   }
 
 }

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

@@ -4,6 +4,7 @@ import com.avaje.ebean.dbmigration.migration.AddColumn;
 import com.avaje.ebean.dbmigration.migration.AddHistoryTable;
 import com.avaje.ebean.dbmigration.migration.AlterColumn;
 import com.avaje.ebean.dbmigration.migration.ChangeSet;
+import com.avaje.ebean.dbmigration.migration.ChangeSetType;
 import com.avaje.ebean.dbmigration.migration.CreateIndex;
 import com.avaje.ebean.dbmigration.migration.CreateTable;
 import com.avaje.ebean.dbmigration.migration.DropColumn;
@@ -12,7 +13,6 @@ import com.avaje.ebean.dbmigration.migration.DropIndex;
 import com.avaje.ebean.dbmigration.migration.DropTable;
 import com.avaje.ebean.dbmigration.migration.Migration;
 
-import java.util.Collection;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
@@ -28,23 +28,23 @@ public class ModelContainer {
   /**
    * All the tables in the model.
    */
-  private Map<String, MTable> tables = new LinkedHashMap<String, MTable>();
+  private final Map<String, MTable> tables = new LinkedHashMap<String, MTable>();
 
   /**
    * All the non unique non foreign key indexes.
    */
-  private Map<String, MIndex> indexes = new LinkedHashMap<String, MIndex>();
+  private final Map<String, MIndex> indexes = new LinkedHashMap<String, MIndex>();
+
+  private final PendingDrops pendingDrops = new PendingDrops();
 
   public ModelContainer() {
-
   }
 
   /**
    * Adjust the FK references on all the draft tables.
    */
   public void adjustDraftReferences() {
-    Collection<MTable> tables = this.tables.values();
-    for (MTable table : tables) {
+    for (MTable table : this.tables.values()) {
       if (table.isDraft()) {
         table.adjustReferences(this);
       }
@@ -82,14 +82,31 @@ public class ModelContainer {
   /**
    * Apply a migration with associated changeSets to the model.
    */
-  public void apply(Migration migration) {
+  public void apply(Migration migration, MigrationVersion version) {
 
     List<ChangeSet> changeSets = migration.getChangeSet();
     for (ChangeSet changeSet : changeSets) {
-      applyChangeSet(changeSet);
+      boolean pending = changeSet.getType() == ChangeSetType.PENDING_DROPS;
+      if (pending) {
+        // un-applied drop columns etc
+        pendingDrops.add(version, changeSet);
+
+      } else if (isDropsFor(changeSet)) {
+        pendingDrops.appliedDropsFor(changeSet);
+      }
+      if (!isDropsFor(changeSet)) {
+        applyChangeSet(changeSet);
+      }
     }
   }
 
+  /**
+   * Return true if the changeSet contains drops for a previous PENDING_DROPS changeSet.
+   */
+  private boolean isDropsFor(ChangeSet changeSet) {
+    return changeSet.getDropsFor() != null;
+  }
+
   /**
    * Apply a changeSet to the model.
    */
@@ -245,4 +262,53 @@ public class ModelContainer {
 
     indexes.put(indexName, new MIndex(indexName, tableName, columnNames));
   }
+
+  /**
+   * Return the list of versions containing un-applied pending drops.
+   */
+  public List<String> getPendingDrops() {
+    return pendingDrops.pendingDrops();
+  }
+
+  /**
+   * Return the migration for the pending drops for a given version.
+   */
+  public Migration migrationForPendingDrop(String pendingVersion) {
+    return pendingDrops.migrationForVersion(pendingVersion);
+  }
+
+  /**
+   * Register the drop columns on history tables that have not been applied yet.
+   */
+  public void registerPendingHistoryDropColumns(ModelContainer newModel) {
+    pendingDrops.registerPendingHistoryDropColumns(newModel);
+  }
+
+  /**
+   * Register any pending drop columns on history tables.  These columns are now not in the current
+   * logical model but we still need to include them in the history views and triggers until they
+   * are actually dropped.
+   */
+  public void registerPendingHistoryDropColumns(ChangeSet changeSet) {
+    for (Object change : changeSet.getChangeSetChildren()) {
+      if (change instanceof DropColumn) {
+        DropColumn dropColumn = (DropColumn) change;
+        if (Boolean.TRUE.equals(dropColumn.isWithHistory())) {
+          registerPendingDropColumn(dropColumn);
+        }
+      }
+    }
+  }
+
+  /**
+   * Register a drop column on a history tables that has not been applied yet.
+   */
+  private void registerPendingDropColumn(DropColumn dropColumn) {
+
+    MTable table = getTable(dropColumn.getTableName());
+    if (table == null) {
+      throw new IllegalArgumentException("Table ["+dropColumn.getTableName()+"] not found?");
+    }
+    table.registerPendingDropColumn(dropColumn.getColumnName());
+  }
 }

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

@@ -66,16 +66,14 @@ public class ModelDiff {
   public Migration getMigration() {
 
     Migration migration = new Migration();
-    ChangeSet applyChangeSet = getApplyChangeSet();
-    if (!applyChangeSet.getChangeSetChildren().isEmpty()) {
+    if (!applyChanges.isEmpty()) {
       // add a non empty apply changeSet
-      migration.getChangeSet().add(applyChangeSet);
+      migration.getChangeSet().add(getApplyChangeSet());
     }
 
-    ChangeSet dropChangeSet = getDropChangeSet();
-    if (!dropChangeSet.getChangeSetChildren().isEmpty()) {
+    if (!dropChanges.isEmpty()) {
       // add a non empty drop changeSet
-      migration.getChangeSet().add(dropChangeSet);
+      migration.getChangeSet().add(getDropChangeSet());
     }
     return migration;
   }
@@ -83,14 +81,14 @@ public class ModelDiff {
   /**
    * Return the list of 'apply' changes.
    */
-  public List<Object> getApplyChanges() {
+  List<Object> getApplyChanges() {
     return applyChanges;
   }
 
   /**
    * Return the list of 'drop' changes.
    */
-  public List<Object> getDropChanges() {
+  List<Object> getDropChanges() {
     return dropChanges;
   }
 
@@ -108,10 +106,10 @@ public class ModelDiff {
   /**
    * Return the 'drop' changeSet.
    */
-  public ChangeSet getDropChangeSet() {
+  ChangeSet getDropChangeSet() {
     // put the changes into a ChangeSet
     ChangeSet createChangeSet = new ChangeSet();
-    createChangeSet.setType(ChangeSetType.DROP);
+    createChangeSet.setType(ChangeSetType.PENDING_DROPS);
     createChangeSet.getChangeSetChildren().addAll(dropChanges);
     return createChangeSet;
   }
@@ -156,6 +154,12 @@ public class ModelDiff {
       }
     }
 
+    // register un-applied ones from the previous migrations
+    baseModel.registerPendingHistoryDropColumns(newModel);
+    if (!dropChanges.isEmpty()) {
+      // register new ones created just now as part of this diff
+      newModel.registerPendingHistoryDropColumns(getDropChangeSet());
+    }
   }
 
   protected void addDropTable(MTable existingTable) {

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

@@ -0,0 +1,263 @@
+package com.avaje.ebean.dbmigration.model;
+
+import com.avaje.ebean.dbmigration.migration.ChangeSet;
+import com.avaje.ebean.dbmigration.migration.ChangeSetType;
+import com.avaje.ebean.dbmigration.migration.DropColumn;
+import com.avaje.ebean.dbmigration.migration.DropTable;
+import com.avaje.ebean.dbmigration.migration.Migration;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.List;
+
+/**
+ * The migrations with pending un-applied drops.
+ */
+public class PendingDrops {
+
+  private final LinkedHashMap<String, Entry> map = new LinkedHashMap<String, Entry>();
+
+  /**
+   * Add a 'pending drops' changeSet for the given version.
+   */
+  public void add(MigrationVersion version, ChangeSet changeSet) {
+
+    Entry entry = map.get(version.normalised());
+    if (entry == null) {
+      entry = new Entry(version);
+      map.put(version.normalised(), entry);
+    }
+    entry.add(changeSet);
+  }
+
+  /**
+   * Return the list of versions with pending drops.
+   */
+  public List<String> pendingDrops() {
+
+    List<String> versions = new ArrayList<String>();
+    for (Entry value : map.values()) {
+      if (value.hasPendingDrops()) {
+        versions.add(value.version.asString());
+      }
+    }
+    return versions;
+  }
+
+  /**
+   * All the pending drops for this migration version have been applied so we need
+   * to remove the (unsuppressed) pending drops for this version.
+   */
+  public boolean appliedDropsFor(ChangeSet changeSet) {
+
+    MigrationVersion version = MigrationVersion.parse(changeSet.getDropsFor());
+
+    Entry entry = map.get(version.normalised());
+    if (entry.removeDrops(changeSet)) {
+      // it had no suppressForever changeSets so remove completely
+      map.remove(version.normalised());
+      return true;
+    }
+
+    return false;
+  }
+
+  /**
+   * Return the migration for the pending drops from a version.
+   * <p>
+   * The value of version can be "next" to find the first un-applied pending drops.
+   * </p>
+   */
+  public Migration migrationForVersion(String pendingVersion) {
+
+    Entry entry = getEntry(pendingVersion);
+
+    Migration migration = new Migration();
+    Iterator<ChangeSet> it = entry.list.iterator();
+    while (it.hasNext()) {
+      ChangeSet changeSet = it.next();
+      if (!isSuppressForever(changeSet)) {
+        it.remove();
+        changeSet.setType(ChangeSetType.APPLY);
+        changeSet.setDropsFor(entry.version.asString());
+        migration.getChangeSet().add(changeSet);
+      }
+    }
+
+    if (migration.getChangeSet().isEmpty()) {
+      throw new IllegalArgumentException("The remaining pendingDrops changeSets in migration ["+pendingVersion+"] are suppressDropsForever=true and can't be applied");
+    }
+
+    if (!entry.containsSuppressForever()) {
+      // we can remove it completely as it has no suppressForever changes
+      map.remove(entry.version.normalised());
+    }
+
+    return migration;
+  }
+
+  private Entry getEntry(String pendingVersion) {
+
+    if ("next".equalsIgnoreCase(pendingVersion)) {
+      Iterator<Entry> it = map.values().iterator();
+      if (it.hasNext()) {
+        return it.next();
+      }
+    } else {
+      Entry remove = map.get(MigrationVersion.parse(pendingVersion).normalised());
+      if (remove != null) {
+        return remove;
+      }
+    }
+    throw new IllegalArgumentException("No 'pendingDrops' changeSets for migration version [" + pendingVersion + "] found");
+  }
+
+  /**
+   * Register pending drop columns on history tables to the new model.
+   */
+  public void registerPendingHistoryDropColumns(ModelContainer newModel) {
+
+    for (Entry entry : map.values()) {
+      for (ChangeSet changeSet : entry.list) {
+        newModel.registerPendingHistoryDropColumns(changeSet);
+      }
+    }
+  }
+
+  /**
+   * Return true if there is an Entry for the given version.
+   */
+  boolean testContainsEntryFor(MigrationVersion version) {
+    return map.containsKey(version.normalised());
+  }
+
+  /**
+   * Return the Entry for the given version.
+   */
+  Entry testGetEntryFor(MigrationVersion version) {
+    return map.get(version.normalised());
+  }
+
+  static class Entry {
+
+    final MigrationVersion version;
+
+    final List<ChangeSet> list = new ArrayList<ChangeSet>();
+
+    Entry(MigrationVersion version) {
+      this.version = version;
+    }
+
+    void add(ChangeSet changeSet) {
+      list.add(changeSet);
+    }
+
+    /**
+     * Return true if this contains suppressForever changeSets.
+     */
+    boolean containsSuppressForever() {
+      for (ChangeSet changeSet : list) {
+        if (isSuppressForever(changeSet)) {
+          return true;
+        }
+      }
+      return false;
+    }
+
+    /**
+     * Return true if this contains drops that can be applied / migrated.
+     */
+    boolean hasPendingDrops() {
+      for (ChangeSet changeSet : list) {
+        if (!isSuppressForever(changeSet)) {
+          return true;
+        }
+      }
+      return false;
+    }
+
+    /**
+     * Remove the drops that are not suppressForever and return true if that
+     * removed all the changeSets (and there are no suppressForever ones).
+     */
+    boolean removeDrops(ChangeSet appliedDrops) {
+
+      Iterator<ChangeSet> iterator = list.iterator();
+      while (iterator.hasNext()) {
+        ChangeSet next = iterator.next();
+        if (!isSuppressForever(next)) {
+          removeMatchingChanges(next, appliedDrops);
+          if (next.getChangeSetChildren().isEmpty()) {
+            iterator.remove();
+          }
+        }
+      }
+
+      return list.isEmpty();
+    }
+
+    /**
+     * Remove the applied drops from the pending ones matching by table name and column name.
+     */
+    private void removeMatchingChanges(ChangeSet pendingDrops, ChangeSet appliedDrops) {
+
+      List<Object> pending = pendingDrops.getChangeSetChildren();
+      Iterator<Object> iterator = pending.iterator();
+      while (iterator.hasNext()) {
+        Object pendingDrop = iterator.next();
+        if (pendingDrop instanceof DropColumn && dropColumnIn((DropColumn)pendingDrop, appliedDrops)) {
+          iterator.remove();
+
+        } else if (pendingDrop instanceof DropTable && dropTableIn((DropTable)pendingDrop, appliedDrops)) {
+          iterator.remove();
+        }
+      }
+    }
+
+    /**
+     * Return true if the pendingDrop is contained in the appliedDrops.
+     */
+    private boolean dropTableIn(DropTable pendingDrop, ChangeSet appliedDrops) {
+      for (Object o : appliedDrops.getChangeSetChildren()) {
+        if (o instanceof DropTable && sameTable(pendingDrop, (DropTable)o)) {
+          return true;
+        }
+      }
+      return false;
+    }
+
+    /**
+     * Return true if the pendingDrop is contained in the appliedDrops.
+     */
+    private boolean dropColumnIn(DropColumn pendingDrop, ChangeSet appliedDrops) {
+      for (Object o : appliedDrops.getChangeSetChildren()) {
+        if (o instanceof DropColumn && sameColumn(pendingDrop, (DropColumn) o)) {
+          return true;
+        }
+      }
+      return false;
+    }
+
+    /**
+     * Return true if the DropTable match by table name.
+     */
+    private boolean sameTable(DropTable pendingDrop, DropTable o) {
+      return pendingDrop.getName().equals(o.getName());
+    }
+
+    /**
+     * Return true if the DropColumns match by table and column name.
+     */
+    private boolean sameColumn(DropColumn pending, DropColumn o) {
+      return pending.getColumnName().equals(o.getColumnName())
+          && pending.getTableName().equals(o.getTableName());
+    }
+
+  }
+
+  private static boolean isSuppressForever(ChangeSet next) {
+    return Boolean.TRUE.equals(next.isSuppressDropsForever());
+  }
+
+}

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

@@ -3,9 +3,11 @@ package com.avaje.ebean.dbmigration.model;
 import com.avaje.ebean.config.DbMigrationConfig;
 import com.avaje.ebean.config.ServerConfig;
 import com.avaje.ebean.config.dbplatform.DatabasePlatform;
+import com.avaje.ebean.dbmigration.ddlgeneration.DdlBuffer;
 import com.avaje.ebean.dbmigration.ddlgeneration.DdlHandler;
 import com.avaje.ebean.dbmigration.ddlgeneration.DdlWrite;
 import com.avaje.ebean.dbmigration.migration.ChangeSet;
+import com.avaje.ebean.dbmigration.migration.ChangeSetType;
 import com.avaje.ebean.dbmigration.migration.Migration;
 
 import java.io.File;
@@ -43,7 +45,7 @@ public class PlatformDdlWriter {
 
     List<ChangeSet> changeSets = dbMigration.getChangeSet();
     for (ChangeSet changeSet : changeSets) {
-      if (!changeSet.getChangeSetChildren().isEmpty()) {
+      if (isApply(changeSet)) {
         handler.generate(write, changeSet);
       }
     }
@@ -52,6 +54,13 @@ public class PlatformDdlWriter {
     writePlatformDdl(write, writePath, fullVersion);
   }
 
+  /**
+   * Return true if the changeSet is APPLY and not empty.
+   */
+  private boolean isApply(ChangeSet changeSet) {
+    return changeSet.getType() == ChangeSetType.APPLY && !changeSet.getChangeSetChildren().isEmpty();
+  }
+
   /**
    * Write the ddl files.
    */
@@ -65,26 +74,6 @@ public class PlatformDdlWriter {
       } finally {
         applyWriter.close();
       }
-
-      if (!config.isSuppressRollback() && !write.isApplyRollbackEmpty()) {
-        FileWriter applyRollbackWriter = createWriter(resourcePath, fullVersion, config.getRollbackPath(), config.getRollbackSuffix());
-        try {
-          writeApplyRollbackDdl(applyRollbackWriter, write);
-          applyRollbackWriter.flush();
-        } finally {
-          applyRollbackWriter.close();
-        }
-      }
-    }
-
-    if (!write.isDropEmpty()) {
-      FileWriter dropWriter = createWriter(resourcePath, fullVersion, config.getDropPath(), config.getDropSuffix());
-      try {
-        writeDropDdl(dropWriter, write);
-        dropWriter.flush();
-      } finally {
-        dropWriter.close();
-      }
     }
   }
 
@@ -116,29 +105,19 @@ public class PlatformDdlWriter {
   protected void writeApplyDdl(Writer writer, DdlWrite write) throws IOException {
 
     // merge the apply buffers in the appropriate order
+    prependDropDependencies(writer, write.applyDropDependencies());
+    writer.append("-- apply changes\n");
     writer.append(write.apply().getBuffer());
     writer.append(write.applyForeignKeys().getBuffer());
     writer.append(write.applyHistory().getBuffer());
   }
 
-  /**
-   * Write the 'Rollback' DDL buffers to the writer.
-   */
-  protected void writeApplyRollbackDdl(Writer writer, DdlWrite write) throws IOException {
-
-    // merge the rollback buffers in the appropriate order
-    writer.append(write.rollbackForeignKeys().getBuffer());
-    writer.append(write.rollback().getBuffer());
-  }
-
-  /**
-   * Write the 'Drop' DDL buffers to the writer.
-   */
-  protected void writeDropDdl(Writer writer, DdlWrite write) throws IOException {
-
-    // merge the rollback buffers in the appropriate order
-    writer.append(write.dropHistory().getBuffer());
-    writer.append(write.drop().getBuffer());
+  private void prependDropDependencies(Writer writer, DdlBuffer buffer) throws IOException {
+    if (!buffer.isEmpty()) {
+      writer.append("-- drop dependencies\n");
+      writer.append(buffer.getBuffer());
+      writer.append("\n");
+    }
   }
 
   /**

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

@@ -38,7 +38,7 @@ public class ModelBuildBeanVisitor implements BeanVisitor {
     table.setComment(descriptor.getDbComment());
     if (descriptor.isHistorySupport()) {
       table.setWithHistory(true);
-      BeanProperty whenCreated = descriptor.findWhenCreatedProperty();
+      BeanProperty whenCreated = descriptor.getWhenCreatedProperty();
       if (whenCreated != null) {
         table.setWhenCreatedColumn(whenCreated.getDbColumn());
       }

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

@@ -43,6 +43,10 @@ public class ModelBuildContext {
     model.adjustDraftReferences();
   }
 
+  public String normaliseTable(String baseTable) {
+    return constraintNaming.normaliseTable(baseTable);
+  }
+
   public String primaryKeyName(String tableName) {
     return maxLength(constraintNaming.primaryKeyName(tableName), 0);
   }
@@ -154,7 +158,7 @@ public class ModelBuildContext {
     int fkCount = 0;
     int ixCount = 0;
     int uqCount = 0;
-    Collection<MColumn> cols = draftTable.getColumns().values();
+    Collection<MColumn> cols = draftTable.allColumns();
     for (MColumn col: cols) {
       if (col.getForeignKeyName() != null) {
         // Note that we adjust the 'references' table later in a second pass

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

@@ -64,8 +64,7 @@ public class ModelBuildIntersectionTable {
 	private void buildFkConstraints(BeanDescriptor<?> desc, TableJoinColumn[] columns, boolean direction) {
 
     String tableName = intersectionTableJoin.getTable();
-    String baseTable = desc.getBaseTable();
-
+    String baseTable = ctx.normaliseTable(desc.getBaseTable());
     String fkName = ctx.foreignKeyConstraintName(tableName, baseTable, ++countForeignKey);
     String fkIndex = ctx.foreignKeyIndexName(tableName, baseTable, countForeignKey);
 

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

@@ -84,7 +84,7 @@ public class ModelBuildPropertyVisitor extends BaseTablePropertyVisitor {
     table.setPkName(determinePrimaryKeyName());
 
     // check if indexes on foreign keys should be suppressed
-    for (MColumn column : table.getColumns().values()) {
+    for (MColumn column : table.allColumns()) {
       if (hasValue(column.getForeignKeyIndex())) {
         if (indexSet.contains(column.getName())) {
           // suppress index on foreign key as there is already
@@ -230,6 +230,7 @@ public class ModelBuildPropertyVisitor extends BaseTablePropertyVisitor {
     }
 
     MColumn col = new MColumn(p.getDbColumn(), ctx.getColumnDefn(p));
+    col.setDefaultValue(p.getDbColumnDefault());
     col.setComment(p.getDbComment());
     col.setDraftOnly(p.isDraftOnly());
 

src/main/java/com/avaje/ebean/plugin/BeanDocType.java

@@ -0,0 +1,72 @@
+package com.avaje.ebean.plugin;
+
+import com.avaje.ebean.FetchPath;
+import com.avaje.ebean.Query;
+import com.avaje.ebeanservice.docstore.api.DocStoreUpdateContext;
+
+import java.io.IOException;
+
+/**
+ * Doc store functions for a specific entity bean type.
+ *
+ * @param <T> The type of entity bean
+ */
+public interface BeanDocType<T> {
+
+  /**
+   * Return the doc store index type for this bean type.
+   */
+  String getIndexType();
+
+  /**
+   * Return the doc store index name for this bean type.
+   */
+  String getIndexName();
+
+  /**
+   * Apply the appropriate fetch path to the query such that the query returns beans matching
+   * the document store structure with the expected embedded properties.
+   */
+  void applyPath(Query<T> spiQuery);
+
+  /**
+   * Return the FetchPath for the embedded document.
+   */
+  FetchPath getEmbedded(String path);
+
+  /**
+   * For embedded 'many' properties we need a FetchPath relative to the root which is used to
+   * build and replace the embedded list.
+   */
+  FetchPath getEmbeddedManyRoot(String path);
+
+  /**
+   * Return a 'raw' property mapped for the given property.
+   * If none exists the given property is returned.
+   */
+  String rawProperty(String property);
+
+  /**
+   * Store the bean in the doc store index.
+   * <p>
+   * This somewhat assumes the bean is fetched with appropriate path properties
+   * to match the expected document structure.
+   */
+  void index(Object idValue, T bean, DocStoreUpdateContext txn) throws IOException;
+
+  /**
+   * Add a delete by Id to the doc store.
+   */
+  void deleteById(Object idValue, DocStoreUpdateContext txn) throws IOException;
+
+  /**
+   * Add a embedded document update to the doc store.
+   *
+   * @param idValue            the Id value of the bean holding the embedded document
+   * @param embeddedProperty   the embedded property
+   * @param embeddedRawContent the content of the embedded document in JSON form
+   * @param txn                the doc store transaction to add the update to
+   */
+  void updateEmbedded(Object idValue, String embeddedProperty, String embeddedRawContent, DocStoreUpdateContext txn) throws IOException;
+
+}

src/main/java/com/avaje/ebean/plugin/BeanType.java

@@ -0,0 +1,179 @@
+package com.avaje.ebean.plugin;
+
+import com.avaje.ebean.config.dbplatform.IdType;
+import com.avaje.ebean.event.BeanFindController;
+import com.avaje.ebean.event.BeanPersistController;
+import com.avaje.ebean.event.BeanPersistListener;
+import com.avaje.ebean.event.BeanQueryAdapter;
+import com.avaje.ebeaninternal.api.SpiQuery;
+import com.avaje.ebeanservice.docstore.api.mapping.DocumentMapping;
+
+import java.util.Collection;
+
+/**
+ * Information and methods on BeanDescriptors made available to plugins.
+ */
+public interface BeanType<T> {
+
+  /**
+   * Return the short name of the bean type.
+   */
+  String getName();
+
+  /**
+   * Return the full name of the bean type.
+   */
+  String getFullName();
+
+  /**
+   * Return the class type this BeanDescriptor describes.
+   */
+  Class<T> getBeanType();
+
+  /**
+   * Return the type bean for an OneToMany or ManyToOne or ManyToMany property.
+   */
+  BeanType<?> getBeanTypeAtPath(String propertyName);
+
+  /**
+   * Return all the properties for this bean type.
+   */
+  Collection<? extends Property> allProperties();
+
+  /**
+   * Return the Id property.
+   */
+  Property getIdProperty();
+
+  /**
+   * Return the when modified property if there is one defined.
+   */
+  Property getWhenModifiedProperty();
+
+  /**
+   * Return the when created property if there is one defined.
+   */
+  Property getWhenCreatedProperty();
+
+  /**
+   * Return the Property to read values from a bean.
+   */
+  Property getProperty(String propertyName);
+
+  /**
+   * Return the ExpressionPath for a given property path.
+   * <p>
+   * This can return a property or nested property path.
+   * </p>
+   */
+  ExpressionPath getExpressionPath(String path);
+
+  /**
+   * Return true if the property is a valid known property or path for the given bean type.
+   */
+  boolean isValidExpression(String property);
+
+  /**
+   * Return the base table this bean type maps to.
+   */
+  String getBaseTable();
+
+  /**
+   * Create a new instance of the bean.
+   */
+  T createBean();
+
+  /**
+   * Return the bean id. This is the same as getBeanId() but without the generic type.
+   */
+  Object beanId(Object bean);
+
+  /**
+   * Return the id value for the given bean.
+   */
+  Object getBeanId(T bean);
+
+  /**
+   * Set the id value to the bean.
+   */
+  void setBeanId(T bean, Object idValue);
+
+  /**
+   * Return the bean persist controller.
+   */
+  BeanPersistController getPersistController();
+
+  /**
+   * Return the bean persist listener.
+   */
+  BeanPersistListener getPersistListener();
+
+  /**
+   * Return the beanFinder. Usually null unless overriding the finder.
+   */
+  BeanFindController getFindController();
+
+  /**
+   * Return the BeanQueryAdapter or null if none is defined.
+   */
+  BeanQueryAdapter getQueryAdapter();
+
+  /**
+   * Return the identity generation type.
+   */
+  IdType getIdType();
+
+  /**
+   * Return the sequence name associated to this entity bean type (if there is one).
+   */
+  String getSequenceName();
+
+  /**
+   * Return true if this bean type has doc store backing.
+   */
+  boolean isDocStoreMapped();
+
+  /**
+   * Return the DocumentMapping for this bean type.
+   * <p>
+   * This is the document structure and mapping options for how this bean type is mapped
+   * for the document store.
+   * </p>
+   */
+  DocumentMapping getDocMapping();
+
+  /**
+   * Return the doc store queueId for this bean type.
+   */
+  String getDocStoreQueueId();
+
+  /**
+   * Return the doc store support for this bean type.\
+   */
+  BeanDocType<T> docStore();
+
+  /**
+   * Add the discriminator value to the query if needed.
+   */
+  void addInheritanceWhere(SpiQuery<?> query);
+
+  /**
+   * Return the root bean type for an inheritance hierarchy.
+   */
+  BeanType<?> root();
+
+  /**
+   * Return true if this bean type has an inheritance hierarchy.
+   */
+  boolean hasInheritance();
+
+  /**
+   * Return the discriminator column.
+   */
+  String getDiscColumn();
+
+  /**
+   * Create a bean given the discriminator value.
+   */
+  T createBeanUsingDisc(Object discValue);
+}

src/main/java/com/avaje/ebean/plugin/ExpressionPath.java

@@ -0,0 +1,76 @@
+package com.avaje.ebean.plugin;
+
+import com.avaje.ebean.bean.EntityBean;
+import com.avaje.ebean.text.StringParser;
+
+/**
+ * A dot notation expression path.
+ */
+public interface ExpressionPath {
+
+  /**
+   * Return true if there is a property on the path that is a many property.
+   */
+  boolean containsMany();
+
+  /**
+   * Return the value from a given entity bean.
+   */
+  Object pathGet(Object bean);
+
+  /**
+   * Set a value to the bean for this expression path.
+   *
+   * @param bean  the bean to set the value on
+   * @param value the value to set
+   */
+  void pathSet(Object bean, Object value);
+
+  /**
+   * Convert the value to the expected type.
+   * <p>
+   * Typically useful for converting strings to the appropriate number type etc.
+   * </p>
+   */
+  Object convert(Object value);
+
+  /**
+   * Return the default StringParser for the scalar property.
+   */
+  StringParser getStringParser();
+
+  /**
+   * For DateTime capable scalar types convert the long systemTimeMillis into
+   * an appropriate java time (Date,Timestamp,Time,Calendar, JODA type etc).
+   */
+  Object parseDateTime(long systemTimeMillis);
+
+  /**
+   * Return true if the last type is "DateTime capable" - can support
+   * {@link #parseDateTime(long)}.
+   */
+  boolean isDateTimeCapable();
+
+  /**
+   * Return the underlying JDBC type or 0 if this is not a scalar type.
+   */
+  int getJdbcType();
+
+  /**
+   * Return true if this is an ManyToOne or OneToOne associated bean property.
+   */
+  boolean isAssocId();
+
+  /**
+   * Return the Id expression string.
+   * <p>
+   * Typically used to produce id = ? expression strings.
+   * </p>
+   */
+  String getAssocIdExpression(String propName, String bindOperator);
+
+  /**
+   * Return the Id values for the given bean value.
+   */
+  Object[] getAssocIdValues(EntityBean bean);
+}

src/main/java/com/avaje/ebean/plugin/Plugin.java

@@ -3,7 +3,7 @@ package com.avaje.ebean.plugin;
 /**
  * A 'plugin' that wants to be configured on startup so it can use features of the EbeanServer itself.
  */
-public interface SpiServerPlugin {
+public interface Plugin {
 
   /**
    * Configure the plugin.

src/main/java/com/avaje/ebean/plugin/Property.java

@@ -0,0 +1,22 @@
+package com.avaje.ebean.plugin;
+
+/**
+ * Property of a entity bean that can be read.
+ */
+public interface Property {
+
+  /**
+   * Return the name of the property.
+   */
+  String getName();
+
+  /**
+   * Return the value of the property on the given bean.
+   */
+  Object getVal(Object bean);
+
+  /**
+   * Return true if this is a OneToMany or ManyToMany property.
+   */
+  boolean isMany();
+}

src/main/java/com/avaje/ebean/plugin/SpiBeanType.java

@@ -1,64 +0,0 @@
-package com.avaje.ebean.plugin;
-
-import com.avaje.ebean.config.dbplatform.IdType;
-import com.avaje.ebean.event.BeanFindController;
-import com.avaje.ebean.event.BeanPersistController;
-import com.avaje.ebean.event.BeanPersistListener;
-import com.avaje.ebean.event.BeanQueryAdapter;
-
-/**
- * Information and methods on BeanDescriptors made available to plugins.
- */
-public interface SpiBeanType<T> {
-
-  /**
-   * Return the class type this BeanDescriptor describes.
-   */
-  Class<T> getBeanType();
-
-  /**
-   * Return true if the property is a valid known property or path for the given bean type.
-   */
-  boolean isValidExpression(String property);
-
-    /**
-     * Return the base table this bean type maps to.
-     */
-  String getBaseTable();
-
-  /**
-   * Return the id value for the given bean.
-   */
-  Object getBeanId(T bean);
-
-  /**
-   * Return the bean persist controller.
-   */
-  BeanPersistController getPersistController();
-
-  /**
-   * Return the bean persist listener.
-   */
-  BeanPersistListener getPersistListener();
-
-  /**
-   * Return the beanFinder. Usually null unless overriding the finder.
-   */
-  BeanFindController getFindController();
-
-  /**
-   * Return the BeanQueryAdapter or null if none is defined.
-   */
-  BeanQueryAdapter getQueryAdapter();
-
-  /**
-   * Return the identity generation type.
-   */
-  IdType getIdType();
-
-  /**
-   * Return the sequence name associated to this entity bean type (if there is one).
-   */
-  String getSequenceName();
-
-}