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 * Represents a method invocation.
24 *
25 * @author James Carman
26 * @since 1.0
27 */
28 public interface Invocation
29 {
30 /**
31 * Returns the method being called.
32 * @return the method being called
33 */
34 public Method getMethod();
35
36 /**
37 * Returns the arguments being passed to this method invocation. Changes in the elements of this array will be
38 * propagated to the recipient of this invocation.
39 *
40 * @return the arguments being passed to this method invocation
41 */
42 public Object[] getArguments();
43
44 /**
45 * Returns the proxy object on which this invocation was invoked.
46 * @return the proxy object on which this invocation was invoked
47 */
48 public Object getProxy();
49
50 /**
51 * Called in order to let the invocation proceed.
52 * @return the return value of the invocation
53 * @throws Throwable any exception or error that was thrown as a result of this invocation
54 */
55 public Object proceed() throws Throwable;
56 }