/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, 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.resource.connectionmanager;
import java.lang.reflect.Method;
import java.rmi.RemoteException;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import javax.ejb.EJBException;
import javax.ejb.RemoveException;
import javax.management.MBeanServer;
import javax.resource.ResourceException;
import org.jboss.ejb.Container;
import org.jboss.ejb.EnterpriseContext;
import org.jboss.ejb.EntityContainer;
import org.jboss.ejb.EntityEnterpriseContext;
import org.jboss.ejb.EntityPersistenceManager;
import org.jboss.ejb.GenericEntityObjectFactory;
import org.jboss.ejb.plugins.AbstractInterceptor;
import org.jboss.invocation.Invocation;
import org.jboss.invocation.InvocationType;
import org.jboss.logging.Logger;
import org.jboss.metadata.ApplicationMetaData;
import org.jboss.metadata.BeanMetaData;
import org.jboss.metadata.ResourceRefMetaData;
import org.jboss.mx.util.JMXExceptionDecoder;
import org.jboss.mx.util.MBeanServerLocator;
/**
* CachedConnectionInterceptor
*
* @author <a href="mailto:d_jencks@users.sourceforge.net">David Jencks</a>
* @author <a href="mailto:E.Guib@ceyoniq.com">Erwin Guib</a>
* @author <a href="mailto:adrian@jboss.com">Adrian Brock</a>
* @version $Revision: 57189 $
*/
public class CachedConnectionInterceptor extends AbstractInterceptor implements EntityPersistenceManager
{
private final CachedConnectionManager ccm;
private final Logger log = Logger.getLogger(getClass());
private Container container;
private EntityPersistenceManager pm;
// contains the JNDI names of unshareable resources
private Set unsharableResources = new HashSet();
public CachedConnectionInterceptor() throws Exception
{
try
{
MBeanServer server = MBeanServerLocator.locateJBoss();
ccm = (CachedConnectionManager) server.getAttribute(CachedConnectionManagerMBean.OBJECT_NAME, "Instance");
}
catch (Exception e)
{
JMXExceptionDecoder.rethrow(e);
throw e;
}
}
public void start() throws Exception
{
log.debug("start called in CachedConnectionInterceptor");
if (container == null)
{
log.warn("container is null, can't steal persistence manager");
return;
}
if (container instanceof EntityContainer)
{
EntityContainer ec = (EntityContainer) container;
if (ec.getPersistenceManager() == null)
{
log.info("no persistence manager in container!");
return;
}
if (ec.getPersistenceManager() == this)
{
log.info(" persistence manager in container already set!");
return;
}
pm = ec.getPersistenceManager();
ec.setPersistenceManager(this);
}
// get the JNDI names for all resources that are referenced "Unshareable"
BeanMetaData bmd = container.getBeanMetaData();
ApplicationMetaData appMetaData = bmd.getApplicationMetaData();
ResourceRefMetaData resRefMetaData;
String jndiName;
for (Iterator iter = bmd.getResourceReferences(); iter.hasNext();)
{
resRefMetaData = (ResourceRefMetaData) iter.next();
jndiName = resRefMetaData.getJndiName();
if (jndiName == null)
{
jndiName = appMetaData.getResourceByName(resRefMetaData.getResourceName());
}
if (jndiName != null && resRefMetaData.isShareable() == false)
{
int i = jndiName.indexOf(':');
if (jndiName.charAt(i + 1) == '/')
{
i++;
}
unsharableResources.add(jndiName.substring(i + 1));
}
}
}
public void stop()
{
if (container != null && pm != null && ((EntityContainer) container).getPersistenceManager() == this)
{
((EntityContainer) container).setPersistenceManager(pm);
pm = null;
}
unsharableResources.clear();
}
public Object invoke(Invocation mi) throws Exception
{
Object key = ((EnterpriseContext) mi.getEnterpriseContext()).getInstance();
try
{
ccm.pushMetaAwareObject(key, unsharableResources);
try
{
return getNext().invoke(mi);
}
finally
{
ccm.popMetaAwareObject(unsharableResources);
}
}
catch (ResourceException e)
{
InvocationType type = mi.getType();
boolean isLocal = (type == InvocationType.LOCAL || type == InvocationType.LOCALHOME);
if (isLocal)
throw new EJBException("Resource problem during invoke", e);
else
throw new RemoteException("Resource problem during invoke", e);
}
}
public Object invokeHome(Invocation mi) throws Exception
{
EnterpriseContext ctx = (EnterpriseContext) mi.getEnterpriseContext();
if (ctx == null)
return getNext().invokeHome(mi);
else
{
Object key = ctx.getInstance();
try
{
ccm.pushMetaAwareObject(key, unsharableResources);
try
{
return getNext().invokeHome(mi);
}
finally
{
ccm.popMetaAwareObject(unsharableResources);
}
}
catch (ResourceException e)
{
InvocationType type = mi.getType();
boolean isLocal = (type == InvocationType.LOCAL || type == InvocationType.LOCALHOME);
if (isLocal)
throw new EJBException("Resource problem during invokeHome", e);
else
throw new RemoteException("Resource problem during invokeHome", e);
}
}
}
public void setContainer(Container container)
{
this.container = container;
}
public Container getContainer()
{
return container;
}
public Object createBeanClassInstance() throws Exception
{
return pm.createBeanClassInstance();
}
public void createEntity(Method m, Object[] args, EntityEnterpriseContext instance) throws Exception
{
pm.createEntity(m, args, instance);
}
public void postCreateEntity(Method m, Object[] args, EntityEnterpriseContext instance) throws Exception
{
pm.postCreateEntity(m, args, instance);
}
public Object findEntity(Method finderMethod, Object[] args, EntityEnterpriseContext instance,
GenericEntityObjectFactory factory) throws Exception
{
return pm.findEntity(finderMethod, args, instance, factory);
}
public Collection findEntities(Method finderMethod, Object[] args, EntityEnterpriseContext instance,
GenericEntityObjectFactory factory) throws Exception
{
return pm.findEntities(finderMethod, args, instance, factory);
}
public void activateEntity(EntityEnterpriseContext instance) throws RemoteException
{
pm.activateEntity(instance);
}
public void loadEntity(EntityEnterpriseContext instance) throws RemoteException
{
pm.loadEntity(instance);
}
public boolean isStoreRequired(EntityEnterpriseContext instance) throws Exception
{
return pm.isStoreRequired(instance);
}
public boolean isModified(EntityEnterpriseContext ctx) throws Exception
{
return pm.isModified(ctx);
}
public void storeEntity(EntityEnterpriseContext ctx) throws RemoteException
{
Object key = ctx.getInstance();
try
{
ccm.pushMetaAwareObject(key, unsharableResources);
try
{
pm.storeEntity(ctx);
}
finally
{
ccm.popMetaAwareObject(unsharableResources);
}
}
catch (ResourceException e)
{
throw new RemoteException("Could not store!: ", e);
}
}
public void invokeEjbStore(EntityEnterpriseContext ctx) throws RemoteException
{
Object key = ctx.getInstance();
try
{
ccm.pushMetaAwareObject(key, unsharableResources);
try
{
pm.invokeEjbStore(ctx);
}
finally
{
ccm.popMetaAwareObject(unsharableResources);
}
}
catch (ResourceException e)
{
throw new RemoteException("Could not store!: ", e);
}
}
public void passivateEntity(EntityEnterpriseContext instance) throws RemoteException
{
pm.passivateEntity(instance);
}
public void removeEntity(EntityEnterpriseContext instance) throws RemoteException, RemoveException
{
pm.removeEntity(instance);
}
/**
Return the real EntityPersistenceManager to which this interceptor delegates.
@return the real EntityPersistenceManager
*/
public EntityPersistenceManager getDelegatePersistenceManager()
{
return pm;
}
}
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