content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.aries.async.impl;
  
  import java.lang.reflect.InvocationHandler;
  import java.lang.reflect.Method;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.osgi.framework.Bundle;
  import org.osgi.framework.ServiceReference;
  import org.osgi.service.log.LogService;
  import org.osgi.util.tracker.ServiceTracker;
  
  class TrackingInvocationHandler implements InvocationHandler, net.sf.cglib.proxy.InvocationHandler {
  
  	private static final Map<Class<?>, Object> RETURN_VALUES;
  	
  	static {
  		Map<Class<?>, Object> map = new HashMap<Class<?>, Object>();
  		
  		map.put(boolean.class, Boolean.FALSE);
  		map.put(byte.class, Byte.valueOf((byte)0));
  		map.put(short.class, Short.valueOf((short)0));
  		map.put(char.class, Character.valueOf((char)0));
  		map.put(int.class, Integer.valueOf(0));
  		map.put(float.class, Float.valueOf(0));
  		map.put(long.class, Long.valueOf(0));
  		map.put(double.class, Double.valueOf(0));
  		
  		RETURN_VALUES = Collections.unmodifiableMap(map);
  	}
  	
  	/**
  	 * 
  	 */
  	private final AsyncService asyncService;
  	private final ServiceTracker<LogService, LogService> logServiceTracker;
  	private final Bundle clientBundle;
  	private final ServiceReference<?> ref;
  	private final Object delegate;
  	
  	public TrackingInvocationHandler(AsyncService asyncService, 
  			Bundle clientBundle, ServiceTracker<LogService, LogService> logServiceTracker, 
  			ServiceReference<?> ref) {
  		this.asyncService = asyncService;
  		this.logServiceTracker = logServiceTracker;
  		this.clientBundle = clientBundle;
  		this.ref = ref;
  		this.delegate = null;
  	}
  	public TrackingInvocationHandler(AsyncService asyncService, 
  			Bundle clientBundle,ServiceTracker<LogService, LogService> logServiceTracker, 
  			Object service) {
  		this.asyncService = asyncService;
  		this.logServiceTracker = logServiceTracker;
  		this.clientBundle = clientBundle;
  		this.delegate = service;
  		this.ref = null;
  	}
  
  	public Object invoke(Object proxy, Method method, Object[] args)
  			throws Throwable {
  		asyncService.registerInvocation(new MethodCall(clientBundle, logServiceTracker, 
  				ref, delegate, method, args));
  		Class<?> returnType = method.getReturnType();
  		return RETURN_VALUES.get(returnType);
  	}
  	
  }
  