/*
* JBoss, Home of Professional Open Source.
* Copyright 2009, 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.exoplatform.container.mc;
import org.exoplatform.container.ConcurrentPicoContainer;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import org.picocontainer.ComponentAdapter;
import org.picocontainer.PicoContainer;
import org.picocontainer.defaults.ComponentAdapterFactory;
/**
* Container class that serves as an interception point for MC integration.
*
* @author <a href="mailto:mstrukel@redhat.com">Marko Strukelj</a>
*/
public class MCIntegrationContainer extends ConcurrentPicoContainer
{
/**
* Logger
*/
private static final Log LOG = ExoLogger.getLogger("exo.kernel.container.MCIntegrationContainer");
/**
* Constructor that exposes super constructor.
*
* @param componentAdapterFactory
* @param parent
*/
public MCIntegrationContainer(ComponentAdapterFactory componentAdapterFactory, PicoContainer parent)
{
super(componentAdapterFactory, parent);
}
/**
* Constructor that exposes super constructor.
*
* @param parent
*/
public MCIntegrationContainer(PicoContainer parent)
{
super(parent);
}
/**
* Constructor that exposes super constructor.
*
* @param componentAdapterFactory
*/
public MCIntegrationContainer(ComponentAdapterFactory componentAdapterFactory)
{
super(componentAdapterFactory);
}
/**
* Constructor that exposes super constructor.
*/
public MCIntegrationContainer()
{
}
/**
* Method interception that swaps the original component adapter for intercepting one
* for components that require mc integration.
* If mc integration isn't available in the current runtime environment, then interception
* simply delegates to parent without interfering.
*
* @param componentAdapter original component adapter
* @return the original component adapter, or the intercepting component adapter
* that takes care of mc integration
*/
public ComponentAdapter registerComponent(ComponentAdapter componentAdapter)
{
ComponentAdapter adapter = componentAdapter;
if (hasMCKernel(componentAdapter))
{
try
{
adapter = MCIntegrationInvoker.getMCAdapter(componentAdapter);
}
catch(Exception ignored)
{
LOG.debug(
"MC integration failed - maybe not supported in this environment (component: "
+ componentAdapter.getComponentKey() + ")", ignored);
}
}
super.registerComponent(adapter);
return adapter;
}
/**
* Check if runtime environment supports mc integration.
*
* @param componentAdapter original component adapter
* @return true if mc integration is supported
*/
public static boolean hasMCKernel(ComponentAdapter componentAdapter)
{
try
{
return MCIntegrationInvoker.hasMCKernel(componentAdapter);
}
catch (Exception ignored)
{
LOG.warn(
"MC integration failed - maybe not supported in this environment (component: "
+ componentAdapter.getComponentKey() + ")", ignored);
}
return false;
}
}