KickJava   Java API By Example, From Geeks To Geeks.

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


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
41 /**
42  * Documents the difference, if any, for a given object
43  * type (class or interface). Its subclasses only
44  * differ in which Visitor callback they invoke.
45  *
46  * @see Visitor
47  */
48 public class ClassDifferences extends RemovableDifferences {
49     private Classfile oldClass;
50     private Classfile newClass;
51
52     private Collection featureDifferences = new LinkedList();
53
54     /**
55      * Only the DifferencesFactory can create instances of this class.
56      */
57     ClassDifferences(String JavaDoc name, Classfile oldClass, Classfile newClass) {
58         super(name);
59
60         setOldClass(oldClass);
61         setNewClass(newClass);
62         
63         if (oldClass != null) {
64             setOldDeclaration(oldClass.getDeclaration());
65         }
66
67         if (newClass != null) {
68             setNewDeclaration(newClass.getDeclaration());
69         }
70     
71         if (isModified()) {
72             Logger.getLogger(getClass()).debug(getName() + " declaration has been modified.");
73         } else {
74             Logger.getLogger(getClass()).debug(getName() + " declaration has not been modified.");
75         }
76     }
77
78     public Classfile getOldClass() {
79         return oldClass;
80     }
81
82     protected void setOldClass(Classfile oldClass) {
83         this.oldClass = oldClass;
84     }
85
86     public Classfile getNewClass() {
87         return newClass;
88     }
89
90     protected void setNewClass(Classfile newClass) {
91         this.newClass = newClass;
92     }
93
94     public Collection getFeatureDifferences() {
95         return featureDifferences;
96     }
97
98     public boolean isModified() {
99         return super.isModified() || (getFeatureDifferences().size() != 0);
100     }
101
102     public void accept(Visitor visitor) {
103         visitor.visitClassDifferences(this);
104     }
105 }
106
Popular Tags