/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.webbeans.jsf;
import javax.enterprise.context.BusyConversationException;
import javax.enterprise.context.Conversation;
import javax.enterprise.context.NonexistentConversationException;
import javax.faces.event.PhaseEvent;
import javax.faces.event.PhaseId;
import javax.faces.event.PhaseListener;
import org.apache.webbeans.config.WebBeansContext;
import org.apache.webbeans.context.ContextFactory;
import org.apache.webbeans.context.ConversationContext;
import org.apache.webbeans.conversation.ConversationImpl;
import org.apache.webbeans.conversation.ConversationManager;
import org.apache.webbeans.logger.WebBeansLoggerFacade;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Conversation related phase listener.
*
* @version $Rev: 1366642 $ $Date: 2012-07-28 13:27:23 +0200 (Sa, 28 Jul 2012) $
*
*/
public class WebBeansPhaseListener implements PhaseListener
{
private static final long serialVersionUID = 1L;
/**Logger instance*/
private final static Logger logger = WebBeansLoggerFacade.getLogger(WebBeansPhaseListener.class);
private Boolean owbApplication = null;
/**
* {@inheritDoc}
*/
public void afterPhase(PhaseEvent phaseEvent)
{
if (phaseEvent.getPhaseId().equals(PhaseId.RENDER_RESPONSE) ||
phaseEvent.getFacesContext().getResponseComplete())
{
if(!isOwbApplication())
{
return;
}
WebBeansContext webBeansContext = WebBeansContext.getInstance();
ConversationManager conversationManager = webBeansContext.getConversationManager();
Conversation conversation = conversationManager.getConversationBeanReference();
if (conversation.isTransient())
{
if (logger.isLoggable(Level.FINE))
{
logger.log(Level.FINE, "Destroying the conversation context with cid : [{0}]", conversation.getId());
}
ContextFactory contextFactory = webBeansContext.getContextFactory();
contextFactory.destroyConversationContext();
}
else
{
//Conversation must be used by one thread at a time
ConversationImpl owbConversation = (ConversationImpl)conversation;
owbConversation.updateTimeOut();
//Other threads can now access propogated conversation.
owbConversation.setInUsed(false);
}
}
}
/**
* {@inheritDoc}
*/
public void beforePhase(PhaseEvent phaseEvent)
{
if (phaseEvent.getPhaseId().equals(PhaseId.RESTORE_VIEW) && isOwbApplication())
{
//It looks for cid parameter in the JSF request.
//If request contains cid, then it must restore conversation
//Otherwise create NonexistentException
WebBeansContext webBeansContext = WebBeansContext.getInstance();
ConversationManager conversationManager = webBeansContext.getConversationManager();
Conversation conversation = conversationManager.getConversationBeanReference();
String cid = JSFUtil.getConversationId();
ContextFactory contextFactory = webBeansContext.getContextFactory();
if (conversation.isTransient())
{
if (logger.isLoggable(Level.FINE))
{
logger.log(Level.FINE, "Creating a new transitional conversation with cid : [{0}]", conversation.getId());
}
contextFactory.initConversationContext(null);
//Not restore, throw exception
if(cid != null && !cid.equals(""))
{
throw new NonexistentConversationException("Propogated conversation with cid=" + cid + " is not restored. It creates a new transient conversation.");
}
}
else
{
if (logger.isLoggable(Level.FINE))
{
logger.log(Level.FINE, "Restoring conversation with cid : [{0}]", conversation.getId());
}
//Conversation must be used by one thread at a time
ConversationImpl owbConversation = (ConversationImpl)conversation;
if(!owbConversation.getInUsed().compareAndSet(false, true))
{
contextFactory.initConversationContext(null);
//Throw Busy exception
throw new BusyConversationException("Propogated conversation with cid=" + cid + " is used by other request. It creates a new transient conversation");
}
else
{
ConversationContext conversationContext = conversationManager.getConversationContext(conversation);
contextFactory.initConversationContext(conversationContext);
}
}
}
}
public PhaseId getPhaseId()
{
return PhaseId.ANY_PHASE;
}
private boolean isOwbApplication()
{
if (owbApplication == null)
{
owbApplication = Boolean.valueOf(WebBeansContext.getInstance().getBeanManagerImpl().isInUse());
}
return owbApplication.booleanValue();
}
}