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Java > Open Source Codes > com > jeantessier > diff > JarDifferences


1 /*
2  * Copyright (c) 2001-2005, Jean Tessier
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * * Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  *
12  * * Redistributions in binary form must reproduce the above copyright
13  * notice, this list of conditions and the following disclaimer in the
14  * documentation and/or other materials provided with the distribution.
15  *
16  * * Neither the name of Jean Tessier nor the names of his contributors
17  * may be used to endorse or promote products derived from this software
18  * without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32
33 package com.jeantessier.diff;
34
35 import java.util.*;
36
37 import org.apache.log4j.*;
38
39 import com.jeantessier.classreader.*;
40 import com.jeantessier.dependency.*;
41
42 /**
43  * Documents the difference, if any, between two codebases.
44  */
45 public class JarDifferences implements Differences {
46     private String JavaDoc name;
47     private String JavaDoc oldVersion;
48     private String JavaDoc newVersion;
49
50     private Collection packageDifferences = new LinkedList();
51
52     /**
53      * Only the DifferencesFactory can create instances of this class.
54      */
55     JarDifferences(String JavaDoc name, String JavaDoc oldVersion, String JavaDoc newVersion) {
56         this.name = name;
57         this.oldVersion = oldVersion;
58         this.newVersion = newVersion;
59     }
60
61     public String JavaDoc getName() {
62         return name;
63     }
64
65     public String JavaDoc getOldVersion() {
66         return oldVersion;
67     }
68
69     public String JavaDoc getNewVersion() {
70         return newVersion;
71     }
72
73     public Collection getPackageDifferences() {
74         return packageDifferences;
75     }
76
77     public boolean isEmpty() {
78         return getPackageDifferences().size() == 0;
79     }
80
81     public void accept(Visitor visitor) {
82         visitor.visitJarDifferences(this);
83     }
84
85     public String JavaDoc toString() {
86         return getName();
87     }
88 }
89
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