/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ejb.plugins;
import org.jboss.ejb.EntityEnterpriseContext;
import org.jboss.ejb.GlobalTxEntityMap;
import org.jboss.invocation.Invocation;
import org.jboss.tm.TxUtils;
/**
* The instance interceptors role is to break entity creation into two
* calls, one for ejbCreate and one for ejbPostCreate. The ejbCreate
* method is passed over the invokeHome chain, and ejbPostCreate is
* passed over the invoke chain.
*
* @author <a href="mailto:dain@daingroup.com">Dain Sundstrom</a>
* @version $Revision: 81030 $
*/
public class EntityCreationInterceptor extends AbstractInterceptor
{
public Object invokeHome(Invocation mi)
throws Exception
{
// Invoke through interceptors
Object retVal = getNext().invokeHome(mi);
// Is the context now with an identity?
// This means that a create method was called, so invoke ejbPostCreate.
EntityEnterpriseContext ctx =
(EntityEnterpriseContext) mi.getEnterpriseContext();
if(ctx != null && ctx.getId() != null)
{
// copy from the context into the mi
// interceptors down the chain look in the mi for the id not the ctx.
mi.setId(ctx.getId());
// invoke down the invoke chain
// the final interceptor in EntityContainer will redirect this
// call to postCreateEntity, which calls ejbPostCreate
getNext().invoke(mi);
// now it's ready and can be scheduled for the synchronization
if(TxUtils.isActive(mi.getTransaction()))
{
GlobalTxEntityMap.NONE.scheduleSync(mi.getTransaction(), ctx);
}
}
return retVal;
}
public Object invoke(Invocation mi)
throws Exception
{
// nothing to see here... move along
return getNext().invoke(mi);
}
}