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Java > Open Source Codes > ch > ethz > prose > filter > ExceptionTypeFilter


1 //
2 // This file is part of the prose package.
3 //
4 // The contents of this file are subject to the Mozilla Public License
5 // Version 1.1 (the "License"); you may not use this file except in
6 // compliance with the License. You may obtain a copy of the License at
7 // http://www.mozilla.org/MPL/
8 //
9 // Software distributed under the License is distributed on an "AS IS" basis,
10 // WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11 // for the specific language governing rights and limitations under the
12 // License.
13 //
14 // The Original Code is prose.
15 //
16 // The Initial Developer of the Original Code is Andrei Popovici. Portions
17 // created by Andrei Popovici are Copyright (C) 2002 Andrei Popovici.
18 // All Rights Reserved.
19 //
20 // Contributor(s):
21 // $Id: ExceptionTypeFilter.java,v 1.2 2004/05/12 09:41:55 anicoara Exp $
22 // =====================================================================
23 //
24 // (history at end)
25 //
26
27 package ch.ethz.prose.filter;
28
29 // used packages
30 import java.util.*;
31 import java.io.*;
32 import ch.ethz.jvmai.JoinPointKinds;
33 import ch.ethz.jvmai.JoinPoint;
34 import ch.ethz.jvmai.CodeJoinPoint;
35 import ch.ethz.prose.engine.ExceptionThrowRequest;
36 import ch.ethz.prose.engine.ExceptionCatchRequest;
37 import ch.ethz.prose.engine.JoinPointRequest;
38
39
40 /**
41  * Class FieldsInTypeFilter XXX
42  *
43  * @version $Revision: 1.2 $
44  * @author Andrei Popovici
45  * @author Angela Nicoara
46  */
47 public
48 class ExceptionTypeFilter extends PointCutter implements JoinPointKinds{
49
50   public final static int SUBCLASS_INHERITANCE = 1;
51   public final static int SUPERCLASS_INHERITANCE = 2;
52   public final static int NO_INHERITANCE = 3;
53
54   private int inheritanceType;
55   private Class JavaDoc subOrSuperClass;
56   /**
57    * XXX
58    * @param XXX XXX
59    */
60   public ExceptionTypeFilter(Class JavaDoc cls, int inhType)
61   {
62     this.inheritanceType = inhType;
63     this.subOrSuperClass = cls;
64
65     acceptMask = MASK_EXCEPTION_THROW_ARGS_JP | MASK_EXCEPTION_CATCH_ARGS_JP;
66     mayFilterStaticallyMask = MASK_EXCEPTION_THROW_ARGS_JP | MASK_EXCEPTION_CATCH_ARGS_JP;
67     canFilterStaticallyMask = MASK_EXCEPTION_THROW_ARGS_JP | MASK_EXCEPTION_CATCH_ARGS_JP;
68   }
69
70
71   protected boolean doIsSpecialRequest(JoinPointRequest jpr)
72     {
73       Class JavaDoc declaringClass;
74
75       switch (jpr.getMask() & (MASK_EXCEPTION_THROW_ARGS_JP | MASK_EXCEPTION_CATCH_ARGS_JP))
76       {
77           case MASK_EXCEPTION_THROW_ARGS_JP:
78                 declaringClass = ((ExceptionThrowRequest)jpr).getExceptionClass();
79                 break;
80           case MASK_EXCEPTION_CATCH_ARGS_JP:
81                 declaringClass = ((ExceptionCatchRequest)jpr).getExceptionClass();
82                 break;
83           default:
84                 throw new Error JavaDoc("ExceptionTypeFilter.doIsSpecialRequest: unrequested request");
85       }
86
87
88       switch(inheritanceType)
89     {
90       case SUBCLASS_INHERITANCE:
91         return subOrSuperClass.isAssignableFrom(declaringClass);
92
93       case SUPERCLASS_INHERITANCE: return declaringClass.isAssignableFrom(subOrSuperClass);
94       case NO_INHERITANCE: return subOrSuperClass.equals(declaringClass);
95       default:
96         throw new Error JavaDoc("Illegal state Exception");
97     }
98     }
99
100   protected boolean doIsSpecialEvent(CodeJoinPoint jpr)
101     {
102       throw new Error JavaDoc("PointCutter did not fullfil its contract");
103     }
104
105
106
107 }
108
109
110 //======================================================================
111 //
112 // $Log: ExceptionTypeFilter.java,v $
113 // Revision 1.2 2004/05/12 09:41:55 anicoara
114 // Remove the README.RVM file
115 //
116 // Revision 1.1.1.1 2003/07/02 15:30:51 apopovic
117 // Imported from ETH Zurich
118 //
119 // Revision 1.3 2003/07/02 12:42:55 anicoara
120 // Added CatchJoinPoint Functionality (Requests, Join-Points, Filters, CatchCuts, Tests)
121 //
122 // Revision 1.2 2003/05/06 15:51:35 popovici
123 // Mozilla-ification
124 //
125 // Revision 1.1 2003/05/05 13:57:45 popovici
126 // renaming from runes to prose
127 //
128 // Revision 1.3 2003/04/27 13:08:46 popovici
129 // Specializers renamed to PointCutter
130 //
131 // Revision 1.2 2003/04/17 12:49:35 popovici
132 // Refactoring of the crosscut package
133 // ExceptionCut renamed to ThrowCut
134 // McutSignature is now SignaturePattern
135 //
136 // Revision 1.1 2003/04/17 08:47:36 popovici
137 // Important functionality additions
138 // - Cflow specializers
139 // - Restructuring of the MethodCut, SetCut, ThrowCut, and GetCut (they are much smaller)
140 // - Transactional capabilities
141 // - Total refactoring of Specializer evaluation, which permits fine-grained distinction
142 // between static and dynamic specializers.
143 // - Functionality pulled up in abstract classes
144 // - Uniformization of advice methods patterns and names
145 //
146
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