#374 - Update migration generation

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

@@ -162,6 +162,12 @@ public class ServerConfig {
    */
   private String asOfSysPeriod = "sys_period";
 
+  /**
+   * Suffix appended to the base table to derive the view that contains the union
+   * of the base table and the history table in order to support asOf queries.
+   */
+  private String historyTableSuffix = "_history";
+
   /**
    * Use for transaction scoped batch mode.
    */
@@ -676,6 +682,20 @@ public void setAsOfSysPeriod(String asOfSysPeriod) {
     this.asOfSysPeriod = asOfSysPeriod;
   }
 
+  /**
+   * Return the history table suffix (defaults to _history).
+   */
+  public String getHistoryTableSuffix() {
+    return historyTableSuffix;
+  }
+
+  /**
+   * Set the history table suffix.
+   */
+  public void setHistoryTableSuffix(String historyTableSuffix) {
+    this.historyTableSuffix = historyTableSuffix;
+  }
+
   /**
    * Return true if we are running in a JTA Transaction manager.
    */
@@ -1960,6 +1980,7 @@ protected void loadSettings(PropertiesWrapper p) {
     diffFlatMode = p.getBoolean("diffFlatMode", diffFlatMode);
     asOfViewSuffix = p.get("asOfViewSuffix", asOfViewSuffix);
     asOfSysPeriod = p.get("asOfSysPeriod", asOfSysPeriod);
+    historyTableSuffix = p.get("historyTableSuffix", historyTableSuffix);
     dataSourceJndiName = p.get("dataSourceJndiName", dataSourceJndiName);
     databaseSequenceBatchSize = p.getInt("databaseSequenceBatchSize", databaseSequenceBatchSize);
     databaseBooleanTrue = p.get("databaseBooleanTrue", databaseBooleanTrue);

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

@@ -1,14 +1,15 @@
 package com.avaje.ebean.dbmigration.ddlgeneration;
 
-import com.avaje.ebean.config.DbConstraintNaming;
-import com.avaje.ebean.config.NamingConvention;
+import com.avaje.ebean.config.ServerConfig;
 import com.avaje.ebean.dbmigration.ddlgeneration.platform.BaseTableDdl;
 import com.avaje.ebean.dbmigration.ddlgeneration.platform.PlatformDdl;
 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.CreateTable;
 import com.avaje.ebean.dbmigration.migration.DropColumn;
+import com.avaje.ebean.dbmigration.migration.DropHistoryTable;
 
 import java.io.IOException;
 import java.util.List;
@@ -20,27 +21,36 @@ public class BaseDdlHandler implements DdlHandler {
 
   protected final TableDdl tableDdl;
 
-  public BaseDdlHandler(NamingConvention namingConvention, DbConstraintNaming naming, PlatformDdl platformDdl) {
-    this.tableDdl = new BaseTableDdl(namingConvention, naming, platformDdl);
+  public BaseDdlHandler(ServerConfig serverConfig, PlatformDdl platformDdl) {
+    this.tableDdl = new BaseTableDdl(serverConfig, platformDdl);
   }
 
   @Override
   public void generate(DdlWrite writer, ChangeSet changeSet) throws IOException {
 
     List<Object> changeSetChildren = changeSet.getChangeSetChildren();
     for (Object change : changeSetChildren) {
-      if (change instanceof  CreateTable) {
+      if (change instanceof CreateTable) {
         generate(writer, (CreateTable) change);
       } else if (change instanceof AddColumn) {
         generate(writer, (AddColumn) change);
       } else if (change instanceof DropColumn) {
         generate(writer, (DropColumn) change);
       } else if (change instanceof AlterColumn) {
         generate(writer, (AlterColumn) change);
+      } else if (change instanceof AddHistoryTable) {
+        generate(writer, (AddHistoryTable) change);
+      } else if (change instanceof DropHistoryTable) {
+        generate(writer, (DropHistoryTable) change);
       }
     }
   }
 
+  @Override
+  public void generateExtra(DdlWrite write) throws IOException {
+    tableDdl.generateExtra(write);
+  }
+
   @Override
   public void generate(DdlWrite writer, CreateTable createTable) throws IOException {
     tableDdl.generate(writer, createTable);
@@ -60,4 +70,14 @@ public void generate(DdlWrite writer, DropColumn dropColumn) throws IOException
   public void generate(DdlWrite writer, AlterColumn alterColumn) throws IOException {
     tableDdl.generate(writer, alterColumn);
   }
+
+  @Override
+  public void generate(DdlWrite writer, AddHistoryTable addHistoryTable) throws IOException {
+    tableDdl.generate(writer, addHistoryTable);
+  }
+
+  @Override
+  public void generate(DdlWrite writer, DropHistoryTable dropHistoryTable) throws IOException {
+    tableDdl.generate(writer, dropHistoryTable);
+  }
 }

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

@@ -1,10 +1,12 @@
 package com.avaje.ebean.dbmigration.ddlgeneration;
 
 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.CreateTable;
 import com.avaje.ebean.dbmigration.migration.DropColumn;
+import com.avaje.ebean.dbmigration.migration.DropHistoryTable;
 
 import java.io.IOException;
 
@@ -22,4 +24,9 @@ public interface DdlHandler {
 
   void generate(DdlWrite writer, AlterColumn alterColumn) throws IOException;
 
+  void generate(DdlWrite writer, AddHistoryTable addHistoryTable) throws IOException;
+
+  void generate(DdlWrite writer, DropHistoryTable dropHistoryTable) throws IOException;
+
+  void generateExtra(DdlWrite write) throws IOException;
 }

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

@@ -1,9 +1,11 @@
 package com.avaje.ebean.dbmigration.ddlgeneration;
 
 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.CreateTable;
 import com.avaje.ebean.dbmigration.migration.DropColumn;
+import com.avaje.ebean.dbmigration.migration.DropHistoryTable;
 import com.avaje.ebean.dbmigration.migration.DropTable;
 
 import java.io.IOException;
@@ -37,4 +39,19 @@ public interface TableDdl {
    * Write the drop column change.
    */
   void generate(DdlWrite writer, DropColumn dropColumn) throws IOException;
+
+  /**
+   * Write the AddHistoryTable change.
+   */
+  void generate(DdlWrite writer, AddHistoryTable addHistoryTable) throws IOException;
+
+  /**
+   * Write the DropHistoryTable change.
+   */
+  void generate(DdlWrite writer, DropHistoryTable dropHistoryTable) throws IOException;
+
+  /**
+   * Generate any extra DDL such as regeneration of history triggers.
+   */
+  void generateExtra(DdlWrite write) throws IOException;
 }