org.codehaus.plexus.component.discovery.DefaultComponentDiscovererManager Maven / Gradle / Ivy
package org.codehaus.plexus.component.discovery;
/*
* 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 java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.Map;
import java.util.LinkedHashMap;
public class DefaultComponentDiscovererManager
implements ComponentDiscovererManager
{
private final List componentDiscoverers = new ArrayList();
// todo dain change this to LinkedHashSet (requires change to maven)
private final Map listeners = new LinkedHashMap();
public synchronized void addComponentDiscoverer( ComponentDiscoverer discoverer )
{
componentDiscoverers.add( discoverer );
}
// todo this is not thread safe... we are returning the raw collection
public synchronized List getComponentDiscoverers()
{
return componentDiscoverers;
}
// Listeners
// todo this is not thread safe... we are returning the raw collection
public synchronized Map getComponentDiscoveryListeners()
{
return listeners;
}
public synchronized void registerComponentDiscoveryListener( ComponentDiscoveryListener listener )
{
if ( !listeners.containsKey( listener ) )
{
listeners.put( listener, new Object() );
}
}
public synchronized void removeComponentDiscoveryListener( ComponentDiscoveryListener listener )
{
listeners.remove( listener );
}
public void fireComponentDiscoveryEvent( ComponentDiscoveryEvent event )
{
Set listeners;
synchronized ( this )
{
listeners = this.listeners.keySet();
}
for ( ComponentDiscoveryListener listener : listeners )
{
listener.componentDiscovered( event );
}
}
}