/**
* Copyright (C) 2009 eXo Platform SAS.
*
* 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.gatein.mop.core.api.content;
import org.gatein.mop.spi.customization.CustomizationContextProvider;
import org.gatein.mop.api.content.CustomizationContext;
import java.util.Map;
import java.util.HashMap;
/**
* A global registry.
*
* @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
* @version $Revision$
*/
public class CustomizationContextProviderRegistry implements CustomizationContextResolver
{
/** The various providers. */
final transient Map<String, CustomizationContextProvider> resolvers;
public CustomizationContextProviderRegistry()
{
resolvers = new HashMap<String, CustomizationContextProvider>();
}
public synchronized void register(String contextType, CustomizationContextProvider contentProvider)
{
if (contextType == null)
{
throw new NullPointerException();
}
if (contentProvider == null)
{
throw new NullPointerException();
}
resolvers.put(contextType, contentProvider);
}
public synchronized void unregister(String contextType)
{
if (contextType == null)
{
throw new NullPointerException();
}
resolvers.remove(contextType);
}
public CustomizationContext resolve(String contextType, String contextId)
{
if (contextType == null)
{
throw new NullPointerException();
}
if (contextId == null)
{
throw new NullPointerException();
}
//
CustomizationContextProvider provider = resolvers.get(contextType);
//
if (provider != null)
{
return provider.resolveContext(contextId);
}
//
return null;
}
}