package org.codehaus.plexus.container.initialization;
/*
* Copyright 2001-2006 Codehaus Foundation.
*
* Licensed 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.
*/
import org.codehaus.plexus.MutablePlexusContainer;
import org.codehaus.plexus.component.discovery.ComponentDiscoveryListener;
import org.codehaus.plexus.component.discovery.DiscoveryListenerDescriptor;
import org.codehaus.plexus.component.repository.exception.ComponentLookupException;
import java.util.Iterator;
import java.util.List;
/**
* @author Jason van Zyl
*/
public class RegisterComponentDiscoveryListenersPhase
extends AbstractContainerInitializationPhase
{
public void execute( ContainerInitializationContext context )
throws ContainerInitializationException
{
List listeners = context.getContainer().getComponentDiscovererManager().getListeners();
if ( listeners != null )
{
for ( Iterator i = listeners.iterator(); i.hasNext(); )
{
DiscoveryListenerDescriptor listenerDescriptor = (DiscoveryListenerDescriptor) i.next();
String role = listenerDescriptor.getRole();
String roleHint = listenerDescriptor.getRoleHint();
try
{
MutablePlexusContainer container = context.getContainer();
ComponentDiscoveryListener listener;
if ( container.getParentContainer() != null )
{
try
{
listener = (ComponentDiscoveryListener) container.getParentContainer().lookup(
role,
roleHint );
}
catch ( ComponentLookupException e )
{
listener = (ComponentDiscoveryListener) container.lookup( role, roleHint );
}
}
else
{
listener = (ComponentDiscoveryListener) container.lookup( role, roleHint );
}
container.getComponentDiscovererManager().registerComponentDiscoveryListener( listener );
}
catch ( ComponentLookupException e )
{
throw new ContainerInitializationException( "Error looking up component discovery listener.", e );
}
}
}
}
}