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.lang.reflect.Member;
23 import java.util.Map;
24
25 /**
26 * This interface provides a hook for preparing for accessing members of objects. The Java2 version of this method can
27 * allow access to otherwise inaccessable members, such as private fields.
28 *
29 * @author Luke Blanshard (blanshlu@netscape.net)
30 * @author Drew Davidson (drew@ognl.org)
31 * @version 15 October 1999
32 */
33 public interface MemberAccess
34 {
35 /**
36 * Sets the member up for accessibility
37 */
38 Object setup( Map<String, Object> context, Object target, Member member, String propertyName );
39
40 /**
41 * Restores the member from the previous setup call.
42 */
43 void restore( Map<String, Object> context, Object target, Member member, String propertyName, Object state );
44
45 /**
46 * Returns true if the given member is accessible or can be made accessible by this object.
47 */
48 boolean isAccessible( Map<String, Object> context, Object target, Member member, String propertyName );
49 }