[WIP] NEW: DDL generation can be invoked separately

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

@@ -1520,4 +1520,8 @@ static DatabaseBuilder builder() {
    */
   void truncate(Class<?>... beanTypes);
 
+  /**
+   * RunDdl manually. This can be used if 'db.ddl.run=false' is set and you plan to run DDL manually.
+   */
+  void runDdl();
 }

ebean-core/src/main/java/io/ebeaninternal/api/SpiDdlGenerator.java

@@ -12,4 +12,9 @@ public interface SpiDdlGenerator {
    */
   void execute(boolean online);
 
+  /**
+   * Run DDL manually. This can be used to initialize multi tenant environments or if you plan not to run
+   * DDL on startup
+   */
+  void runDdl();
 }

ebean-core/src/main/java/io/ebeaninternal/server/core/DefaultServer.java

@@ -2285,4 +2285,9 @@ List<MetaQueryPlan> queryPlanInit(QueryPlanInit initRequest) {
   List<MetaQueryPlan> queryPlanCollectNow(QueryPlanRequest request) {
     return queryPlanManager.collect(request);
   }
+
+  @Override
+  public void runDdl() {
+    ddlGenerator.runDdl();
+  }
 }

ebean-core/src/main/java/io/ebeaninternal/server/core/InternalConfiguration.java

@@ -619,6 +619,11 @@ private static class NoopDdl implements SpiDdlGenerator {
       this.ddlRun = ddlRun;
     }
 
+    @Override
+    public void runDdl() {
+      CoreLog.log.log(ERROR, "Manual DDL run not possible");
+    }
+
     @Override
     public void execute(boolean online) {
       if (online && ddlRun) {

ebean-ddl-generator/src/main/java/io/ebeaninternal/dbmigration/DdlGenerator.java

@@ -63,11 +63,10 @@ public DdlGenerator(SpiEbeanServer server) {
     if (!config.getTenantMode().isDdlEnabled() && config.isDdlRun()) {
       log.log(WARNING, "DDL can''t be run on startup with TenantMode " + config.getTenantMode());
       this.runDdl = false;
-      this.useMigrationStoredProcedures = false;
     } else {
       this.runDdl = config.isDdlRun();
-      this.useMigrationStoredProcedures = config.getDatabasePlatform().useMigrationStoredProcedures();
     }
+    this.useMigrationStoredProcedures = config.getDatabasePlatform() != null && config.getDatabasePlatform().useMigrationStoredProcedures();
     this.scriptTransform = createScriptTransform(config);
     this.baseDir = initBaseDir();
   }
@@ -85,7 +84,7 @@ private File initBaseDir() {
   @Override
   public void execute(boolean online) {
     generateDdl();
-    if (online) {
+    if (online && runDdl) {
       runDdl();
     }
   }
@@ -105,16 +104,15 @@ protected void generateDdl() {
   /**
    * Run the DDL drop and DDL create scripts if properties have been set.
    */
-  protected void runDdl() {
-    if (runDdl) {
-      Connection connection = null;
-      try {
-        connection = obtainConnection();
-        runDdlWith(connection);
-      } finally {
-        JdbcClose.rollback(connection);
-        JdbcClose.close(connection);
-      }
+  @Override
+  public void runDdl() {
+    Connection connection = null;
+    try {
+      connection = obtainConnection();
+      runDdlWith(connection);
+    } finally {
+      JdbcClose.rollback(connection);
+      JdbcClose.close(connection);
     }
   }
 

ebean-test/src/test/java/io/ebean/xtest/internal/api/TDSpiServer.java

@@ -632,4 +632,9 @@ public void loadBeanL2(EntityBeanIntercept ebi) {
   public void loadBean(EntityBeanIntercept ebi) {
 
   }
+
+  @Override
+  public void runDdl() {
+
+  }
 }