/*
* Copyright 2000-2004 The Apache Software 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.
*/
package org.apache.jetspeed.search.handlers;
import java.util.HashMap;
import java.util.Map;
import org.apache.jetspeed.search.HandlerFactory;
import org.apache.jetspeed.search.ObjectHandler;
/**
* Search object handler factory
*
* @author <a href="mailto: morciuch@apache.org">Mark Orciuch</a>
* @author <a href="mailto: jford@apache.org">Jeremy Ford</a>
*
* @version $Id: HandlerFactoryImpl.java 187685 2004-10-11 21:52:00Z jford $
*/
public class HandlerFactoryImpl implements HandlerFactory
{
private final Map handlerCache = new HashMap();
private Map classNameMapping = new HashMap();
public HandlerFactoryImpl(Map classNameMapping)
{
this.classNameMapping = classNameMapping;
}
public void addClassNameMapping(String className, String handlerClassName)
{
classNameMapping.put(className, handlerClassName);
}
/**
* Returns parsed object handler for specific object
*
* @param obj
* @return
*/
public ObjectHandler getHandler(Object obj) throws Exception
{
return getHandler(obj.getClass().getName());
}
/**
* Returns parsed object handler for specific object
*
* @param obj
* @return
*/
public ObjectHandler getHandler(String className) throws Exception
{
ObjectHandler handler = null;
if(handlerCache.containsKey(className))
{
handler = (ObjectHandler)handlerCache.get(className);
}
else
{
String handlerClass = (String) classNameMapping.get(className);
if (handlerClass == null)
{
throw new Exception("No handler was found for document type: " + className);
}
//ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
//handler = (ObjectHandler) classLoader.loadClass(handlerClass).newInstance();
handler = (ObjectHandler)Class.forName(handlerClass).newInstance();
handlerCache.put(className, handler);
}
//System.out.println("HandlerFactory: returning handler " + handler + " for " + obj);
return handler;
}
}