/*******************************************************************************
* Copyright (c) 1998, 2010 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* dclarke - Dynamic Persistence INCUBATION - Enhancement 200045
* http://wiki.eclipse.org/EclipseLink/Development/Dynamic
*
* This code is being developed under INCUBATION and is not currently included
* in the automated EclipseLink build. The API in this code may change, or
* may never be included in the product. Please provide feedback through mailing
* lists or the bug database.
******************************************************************************/
package org.eclipse.persistence.jpa.dynamic;
//java eXtension imports
import java.util.ArrayList;
import java.util.Collection;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
//EclipseLink imports
import org.eclipse.persistence.descriptors.ClassDescriptor;
import org.eclipse.persistence.dynamic.DynamicHelper;
import org.eclipse.persistence.dynamic.DynamicType;
import org.eclipse.persistence.internal.sessions.AbstractSession;
import org.eclipse.persistence.jpa.JpaHelper;
import org.eclipse.persistence.tools.schemaframework.DynamicSchemaManager;
/**
*
* @author dclarke
* @since EclipseLink 1.2
*/
public class JPADynamicHelper extends DynamicHelper {
public JPADynamicHelper(EntityManagerFactory emf) {
super(JpaHelper.getServerSession(emf));
}
public JPADynamicHelper(EntityManager em) {
super(JpaHelper.getEntityManager(em).getServerSession());
}
/**
* Add one or more EntityType instances to a session and optionally generate
* needed tables with or without FK constraints.
*/
public void addTypes(boolean createMissingTables, boolean generateFKConstraints, Collection<DynamicType> types) {
if (types == null || types.isEmpty()) {
throw new IllegalArgumentException("No types provided");
}
Collection<ClassDescriptor> descriptors = new ArrayList<ClassDescriptor>(types.size());
for (DynamicType type : types) {
if (!type.getDescriptor().requiresInitialization()) {
type.getDescriptor().getInstantiationPolicy().initialize((AbstractSession) session);
}
if (type.getDescriptor().getJavaClassName() != null) {
fqClassnameToDescriptor.put(type.getDescriptor().getJavaClassName(), type.getDescriptor());
}
descriptors.add(type.getDescriptor());
}
session.addDescriptors(descriptors);
if (createMissingTables) {
if (!getSession().isConnected()) {
getSession().login();
}
new DynamicSchemaManager(session).createTables(generateFKConstraints, types);
}
}
}