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Java > Open Source Codes > org > objectstyle > cayenne > event > CayenneEvent


1 /* ====================================================================
2  *
3  * The ObjectStyle Group Software License, version 1.1
4  * ObjectStyle Group - http://objectstyle.org/
5  *
6  * Copyright (c) 2002-2005, Andrei (Andrus) Adamchik and individual authors
7  * of the software. All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution, if any,
22  * must include the following acknowlegement:
23  * "This product includes software developed by independent contributors
24  * and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
25  * Alternately, this acknowlegement may appear in the software itself,
26  * if and wherever such third-party acknowlegements normally appear.
27  *
28  * 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse
29  * or promote products derived from this software without prior written
30  * permission. For written permission, email
31  * "andrus at objectstyle dot org".
32  *
33  * 5. Products derived from this software may not be called "ObjectStyle"
34  * or "Cayenne", nor may "ObjectStyle" or "Cayenne" appear in their
35  * names without prior written permission.
36  *
37  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
38  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
39  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
40  * DISCLAIMED. IN NO EVENT SHALL THE OBJECTSTYLE GROUP OR
41  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48  * SUCH DAMAGE.
49  * ====================================================================
50  *
51  * This software consists of voluntary contributions made by many
52  * individuals and hosted on ObjectStyle Group web site. For more
53  * information on the ObjectStyle Group, please see
54  * <http://objectstyle.org/>.
55  */
56
57 package org.objectstyle.cayenne.event;
58
59 import java.util.Collections JavaDoc;
60 import java.util.EventObject JavaDoc;
61 import java.util.Map JavaDoc;
62
63 /**
64  * Common superclass for events passed from the EventManager to Listeners;
65  * encapsulates optional event information.
66  *
67  * @author Dirk Olmes
68  * @author Holger Hoffstaette
69  */
70
71 public class CayenneEvent extends EventObject JavaDoc {
72
73     protected Map JavaDoc info;
74     protected transient Object JavaDoc postedBy;
75
76     public CayenneEvent(Object JavaDoc source) {
77         this(source, null);
78     }
79
80     public CayenneEvent(Object JavaDoc source, Map JavaDoc info) {
81         this(source, source, info);
82     }
83
84     /**
85      * @since 1.1
86      */
87     public CayenneEvent(Object JavaDoc source, Object JavaDoc postedBy, Map JavaDoc info) {
88         super(source);
89         this.postedBy = postedBy;
90         this.info = (info != null ? info : Collections.EMPTY_MAP);
91     }
92
93     public Map JavaDoc getInfo() {
94         return info;
95     }
96
97     /**
98      * Used when deserializing remote events.
99      */
100     void setSource(Object JavaDoc source) {
101         super.source = source;
102     }
103     
104     /**
105      * Returns an object that posted this event. It may be different
106      * from event source, if event is reposted multiple times.
107      */
108     public Object JavaDoc getPostedBy() {
109         return postedBy;
110     }
111
112     public void setPostedBy(Object JavaDoc postedBy) {
113         this.postedBy = postedBy;
114     }
115 }
116
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