Decorating JCR Repository

SeamJCRRepository.java

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 * Copyright [2010], Red Hat, Inc., and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
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 * http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software
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 * See the License for the specific language governing permissions and
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 */
package org.jboss.seam.jcr;

import javax.decorator.Decorator;
import javax.decorator.Delegate;
import javax.enterprise.inject.spi.BeanManager;
import javax.inject.Inject;
import javax.jcr.Credentials;
import javax.jcr.LoginException;
import javax.jcr.NoSuchWorkspaceException;
import javax.jcr.Repository;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.jcr.observation.EventListener;
import javax.jcr.observation.ObservationManager;

import org.jboss.seam.jcr.annotations.JcrEventListener;
import org.jboss.seam.jcr.annotations.JcrRepository;
import org.jboss.seam.jcr.events.JcrCDIEventListener;

/**
 * Decorator class for JCR 2.0 {@link Repository} implementations
 * 
 * @author george
 * 
 */
@Decorator
public abstract class SeamJcrRepository implements Repository
{
   @Inject
   @JcrRepository
   @Delegate
   private Repository repository;

   @Inject
   private BeanManager beanManager;

   @Override
   public Session login() throws LoginException, RepositoryException
   {
      Session session = repository.login();
      registerListener(session);
      return session;
   }

   @Override
   public Session login(Credentials credentials) throws LoginException, RepositoryException
   {
      Session session = repository.login(credentials);
      registerListener(session);
      return session;
   }

   @Override
   public Session login(Credentials credentials, String workspaceName) throws LoginException, NoSuchWorkspaceException, RepositoryException
   {
      Session session = repository.login(credentials, workspaceName);
      registerListener(session);
      return session;
   }

   @Override
   public Session login(String workspaceName) throws LoginException, NoSuchWorkspaceException, RepositoryException
   {
      Session session = repository.login(workspaceName);
      registerListener(session);
      return session;
   }

   /**
    * Registers this {@link EventListener} into an {@link ObservationManager}
    * using the supplied config
    * 
    * @param ann
    * @param obsManager
    * @throws RepositoryException
    */
   private void registerListener(Session session) throws RepositoryException
   {
      session.getWorkspace().getObservationManager().addEventListener(new JcrCDIEventListener(beanManager), JcrEventListener.ALL_EVENTS, "/", true, null, null, false);
   }

}