001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    
018    package org.apache.commons.proxy;
019    
020    import java.io.Serializable;
021    import java.lang.reflect.Method;
022    
023    /**
024     * An invoker is responsible for handling a method invocation.
025     *
026     * @author James Carman
027     * @since 1.0
028     */
029    public interface Invoker extends Serializable
030    {
031    //**********************************************************************************************************************
032    // Other Methods
033    //**********************************************************************************************************************
034    
035        /**
036         * "Invokes" the method.  Implementation should throw a {@link org.apache.commons.proxy.exception.InvokerException}
037         * if problems arise while trying to invoke the method.
038         *
039         * @param proxy     the proxy object
040         * @param method    the method being invoked
041         * @param arguments the arguments
042         * @return the return value
043         * @throws Throwable thrown by the implementation
044         */
045        public Object invoke( Object proxy, Method method, Object[] arguments ) throws Throwable;
046    }