1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.commons.proxy; 19 20 import java.lang.reflect.Method; 21 22 /** 23 * An invoker is responsible for handling a method invocation. 24 * 25 * @author James Carman 26 * @since 1.0 27 */ 28 public interface Invoker 29 { 30 /** 31 * "Invokes" the method. Implementation should throw a {@link org.apache.commons.proxy.exception.InvokerException} 32 * if problems arise while trying to invoke the method. 33 * @param proxy the proxy object 34 * @param method the method being invoked 35 * @param arguments the arguments 36 * @return the return value 37 * @throws Throwable thrown by the implementation 38 */ 39 public Object invoke( Object proxy, Method method, Object[] arguments ) throws Throwable; 40 }