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/***************************************************************************
* Copyright (c) 2004, 2005, 2006 Eike Stepper, Germany.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
**************************************************************************/
package org.eclipse.net4j.util.registry;
import org.eclipse.net4j.util.registry.IRegistryListener.EventType;
import java.util.Set;
/**
* @author Eike Stepper
*/
public class DelegatingRegistry<ID, E extends IRegistryElement<ID>> extends AbstractRegistry<ID, E>
{
private IRegistry<ID, E> delegate;
private IRegistryListener<ID, E> delegateListener = new IRegistryListener<ID, E>()
{
public void notifyRegistryEvent(IRegistry<ID, E> registry, EventType eventType, E element)
{
handleDelegateEvent(eventType, element);
}
};
public DelegatingRegistry(IRegistry<ID, E> delegate)
{
this(delegate, DEFAULT_RESOLVING);
}
public DelegatingRegistry(IRegistry<ID, E> delegate, boolean resolving)
{
super(resolving);
this.delegate = delegate;
delegate.addRegistryListener(delegateListener);
}
public IRegistry<ID, E> getDelegate()
{
return delegate;
}
public void register(E element)
{
delegatedRegister(element);
}
public void deregister(ID id)
{
delegatedDeregister(id);
}
public E lookup(ID id, boolean resolve)
{
return delegatedLookup(id, resolve);
}
public Set<ID> getElementIDs()
{
return delegatedGetElementIDs();
}
@Override
public void dispose()
{
delegate.removeRegistryListener(delegateListener);
}
protected void delegatedRegister(E element)
{
delegate.register(element);
}
protected void delegatedDeregister(ID id)
{
delegate.deregister(id);
}
protected E delegatedLookup(ID id, boolean resolve)
{
return delegate.lookup(id, resolve);
}
protected Set<ID> delegatedGetElementIDs()
{
return delegate.getElementIDs();
}
protected int delegatedSize()
{
return delegate.size();
}
protected void delegatedDispose()
{
delegate.dispose();
}
protected void handleDelegateEvent(EventType eventType, E element)
{
fireRegistryEvent(eventType, element);
}
@Override
protected void replaceElement(ID id, E element)
{
// Do nothing
}
}
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