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 }