1 package org.apache.commons.ognl;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.util.Map;
23
24 /**
25 * This interface defines methods for calling methods in a target object. Methods are broken up into static and instance
26 * methods for convenience. indexes into the target object, which must be an array.
27 *
28 * @author Luke Blanshard (blanshlu@netscape.net)
29 * @author Drew Davidson (drew@ognl.org)
30 */
31 public interface MethodAccessor
32 {
33 /**
34 * Calls the static method named with the arguments given on the class given.
35 *
36 * @param context expression context in which the method should be called
37 * @param targetClass the object in which the method exists
38 * @param methodName the name of the method
39 * @param args the arguments to the method
40 * @return result of calling the method
41 * @exception OgnlException if there is an error calling the method
42 */
43 Object callStaticMethod( Map<String, Object> context, Class<?> targetClass, String methodName, Object[] args )
44 throws OgnlException;
45
46 /**
47 * Calls the method named with the arguments given.
48 *
49 * @param context expression context in which the method should be called
50 * @param target the object in which the method exists
51 * @param methodName the name of the method
52 * @param args the arguments to the method
53 * @return result of calling the method
54 * @exception OgnlException if there is an error calling the method
55 */
56 Object callMethod( Map<String, Object> context, Object target, String methodName, Object[] args )
57 throws OgnlException;
58 }