1 /*
2 * Copyright 1999-2001,2004 The Apache Software Foundation.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.apache.commons.workflow;
18
19
20 import java.util.EventListener;
21
22
23 /**
24 * A <strong>ScopeListener</strong> registers its interest in receiving
25 * <code>ScopeEvent</code> notifications when the occur on a particular
26 * <code>Scope</code> of interest.
27 *
28 * @version $Revision: 155475 $ $Date: 2005-02-26 13:31:11 +0000 (Sat, 26 Feb 2005) $
29 * @author Craig R. McClanahan
30 */
31
32 public interface ScopeListener extends EventListener {
33
34
35 // --------------------------------------------------------- Public Methods
36
37
38 /**
39 * Invoked when a new bean was added to this <code>scope</code>.
40 *
41 * @param event The <code>ScopeEvent</code> that has occurred
42 */
43 public void beanAdded(ScopeEvent event);
44
45
46 /**
47 * Invoked when an existing bean was removed in this <code>scope</code>.
48 *
49 * @param event The <code>ScopeEvent</code> that has occurred
50 */
51 public void beanRemoved(ScopeEvent event);
52
53
54 /**
55 * Invoked when an existing bean was replaced in this <code>scope</code>.
56 *
57 * @param event The <code>ScopeEvent</code> that has occurred
58 */
59 public void beanReplaced(ScopeEvent event);
60
61
62 /**
63 * Invoked when the entire Scope is cleared.
64 *
65 * @param event The <code>ScopeEvent</code> that has occurred
66 */
67 public void scopeCleared(ScopeEvent event);
68
69
70 }
71
72