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27 package ch.ethz.prose.crosscut;
28
29 import java.lang.reflect.Field  ;
31 import java.util.HashMap ;
32
33 import ch.ethz.jvmai.ExceptionJoinPoint;
34 import ch.ethz.jvmai.FieldAccessJoinPoint;
35 import ch.ethz.jvmai.FieldModificationJoinPoint;
36 import ch.ethz.jvmai.JoinPoint;
37 import ch.ethz.jvmai.MethodEntryJoinPoint;
38 import ch.ethz.jvmai.MethodExitJoinPoint;
39 import ch.ethz.prose.engine.FieldAccessRequest;
40
41
42
62 public abstract class GetCut extends AbstractCrosscut {
63 private static class SetGetArgs
64 {
65 Object [] cc;
66 Object [] cw;
67 Object [] wc;
68 Object [] ww;
69 SetGetArgs()
70 {
71 cc = new Object [2];
72 cw = new Object [2]; cw[1]=new ANY();
73 wc = new Object [2]; wc[0]=new ANY();
74 ww = new Object [2]; ww[0]=new ANY(); ww[1]=new ANY();
75 }
76 }
77
78
79 private ThreadLocal threadLocalArgs;
80
81
85 protected void GET_ARGS(){}
86
87
88 private transient SetGetSignaturePattern advicePattern;
89
90
91 static class SetGetThreadLocal extends ThreadLocal implements java.io.Serializable
92 {
93 protected Object initialValue()
94 {
95 return new SetGetArgs();
96 }
97 };
98 protected GetCut()
99 {
100 threadLocalArgs = new SetGetThreadLocal();
101 initState();
102 }
103
104 private void initState()
105 {
106 if (advicePattern == null)
107 {
108 advicePattern = new SetGetSignaturePattern(this);
109 toStringSignature = advicePattern.toString();
110 }
111 }
112
113 String toStringSignature = null;
114 public void insertionAction(boolean isBeforeInsertion)
115 {
116 if (isBeforeInsertion)
117 initState();
118 }
119
120 protected void joinPointAction(FieldAccessJoinPoint ev)
121 {
122 Object [] args = null;
123 SetGetArgs setGetArgs=(SetGetArgs)threadLocalArgs.get();
124
125 switch (advicePattern.signatureCathegory)
126 {
127 case SignaturePattern.SIGNATURE__EMPTY: break;
129 case SignaturePattern.SIGNATURE__CONCRETE__CONCRETE:
130 args = setGetArgs.cc;
131 args[0]= ev.getTarget();
132 args[1] = ev.getValue();
133 break;
134 case SignaturePattern.SIGNATURE__WILDCARD__CONCRETE:
135 args=setGetArgs.wc;
136 ((ANY)args[0]).setObject(ev.getTarget());
137 args[1]=ev.getValue();
138 break;
139 case SignaturePattern.SIGNATURE__CONCRETE__WILDCARD:
140 args=setGetArgs.cw;
141 args[0]=ev.getTarget();
142 ((ANY)args[1]).setObject(ev.getValue());
143 break;
144 case SignaturePattern.SIGNATURE__WILDCARD__WILDCARD:
145 args=setGetArgs.ww;
146 ((ANY)args[0]).setObject(ev.getTarget());
147 ((ANY)args[1]).setObject(ev.getValue());
148 break;
149 default:
150 throw new Error ("Wrong pattern signature in " + this);
151 }
152 try
153 {
154 advicePattern.methodObj.invoke(this,args);
155 }
156 catch (IllegalAccessException e)
157 {
158 throw new RuntimeException ();
159 }
160 catch (java.lang.reflect.InvocationTargetException e)
161 {
162 throw new RuntimeException ();
163 }
164
165 }
166
167
168
174 protected CrosscutRequest doCreateRequest(Class c)
175 throws SecurityException
176 {
177 Field [] declaredFields = null;
180 CrosscutRequest result = new CrosscutRequest();
181
182 try { declaredFields = c.getDeclaredFields(); }
183 catch (NoClassDefFoundError e)
184 {
185 return result;
186 }
187 for ( int i = 0; i < declaredFields.length; i++ )
188 {
189 if (advicePattern.matchesOperationOnField(declaredFields[i]))
190 result.add(requestFactory.createJoinPointRequest(FieldAccessJoinPoint.KIND,declaredFields[i]));
191 }
192
193 return result;
194 }
195
196
199 public String toString()
200 {
201 return " Crosscut: 'GetCut' \n" +
202 " Advice:" + toStringSignature + "\n" +
203 " PointCutter: " + getSpecializer() + "\n";
204 }
205 }
206
207
208 |
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