/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.osgi;
import java.util.Map;
import java.util.Properties;
import javax.persistence.EntityManagerFactory;
import javax.persistence.spi.PersistenceProvider;
import javax.persistence.spi.PersistenceUnitInfo;
import javax.persistence.spi.PersistenceUnitTransactionType;
import org.hibernate.cfg.AvailableSettings;
import org.hibernate.ejb.Ejb3Configuration;
import org.hibernate.ejb.HibernatePersistence;
import org.hibernate.internal.util.ClassLoaderHelper;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.BundleEvent;
import org.osgi.framework.BundleListener;
/**
* @author Brett Meyer
* @author Martin Neimeier
*/
public class HibernateBundleActivator
extends HibernatePersistence
implements BundleActivator, /*ServiceListener,*/ BundleListener {
private BundleContext context;
private OsgiClassLoader osgiClassLoader;
@Override
public void start(BundleContext context) throws Exception {
this.context = context;
// register this instance as a bundle listener to get informed about all
// bundle live cycle events
context.addBundleListener(this);
osgiClassLoader = new OsgiClassLoader();
ClassLoaderHelper.overridenClassLoader = osgiClassLoader;
for ( Bundle bundle : context.getBundles() ) {
handleBundleChange( bundle );
}
Properties properties = new Properties();
properties.put( "javax.persistence.provider", HibernateBundleActivator.class.getName() );
context.registerService(
PersistenceProvider.class.getName(),
this,
properties
);
}
@Override
public void stop(BundleContext context) throws Exception {
context.removeBundleListener(this);
// Nothing else to do. When re-activated, this Activator will be
// re-started and the EMF re-created.
}
@Override
public void bundleChanged(BundleEvent event) {
handleBundleChange( event.getBundle() );
}
private void handleBundleChange( Bundle bundle ) {
if ( bundle.getState() == Bundle.ACTIVE ) {
osgiClassLoader.registerBundle(bundle);
} else {
osgiClassLoader.unregisterBundle(bundle);
}
}
@Override
public EntityManagerFactory createContainerEntityManagerFactory(PersistenceUnitInfo info, Map map) {
Ejb3Configuration cfg = new Ejb3Configuration();
if ( info.getTransactionType().equals( PersistenceUnitTransactionType.JTA ) ) {
map.put( AvailableSettings.JTA_PLATFORM, new OsgiJtaPlatform( context ) );
}
Ejb3Configuration configured = cfg.configure( info, map );
return configured != null ? configured.buildEntityManagerFactory() : null;
}
}