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/*
 * Copyright 2002,2003 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 com.github.drinkjava2.cglib.proxy;

/**
 * General-purpose {@link Enhancer} callback which provides for "around advice".
 * @author Juozas Baliuka [email protected]
 * @version $Id: MethodInterceptor.java,v 1.8 2004/06/24 21:15:20 herbyderby Exp $
 */
public interface MethodInterceptor
extends Callback
{
    /**
     * All generated proxied methods call this method instead of the original method.
     * The original method may either be invoked by normal reflection using the Method object,
     * or by using the MethodProxy (faster).
     * @param obj "this", the enhanced object
     * @param method intercepted Method
     * @param args argument array; primitive types are wrapped
     * @param proxy used to invoke super (non-intercepted method); may be called
     * as many times as needed
     * @throws Throwable any exception may be thrown; if so, super method will not be invoked
     * @return any value compatible with the signature of the proxied method. Method returning void will ignore this value.
     * @see MethodProxy
     */    
    public Object intercept(Object obj, java.lang.reflect.Method method, Object[] args,
                               MethodProxy proxy) throws Throwable;

}