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1
4 package com.tc.aspectwerkz.transform.inlining.deployer;
5
6 import com.tc.aspectwerkz.definition.AdviceDefinition;
7 import com.tc.aspectwerkz.definition.AspectDefinition;
8 import com.tc.aspectwerkz.definition.SystemDefinition;
9 import com.tc.aspectwerkz.definition.SystemDefinitionContainer;
10 import com.tc.aspectwerkz.expression.ExpressionInfo;
11 import com.tc.aspectwerkz.util.UuidGenerator;
12
13 import java.lang.ref.WeakReference  ;
14 import java.util.HashMap ;
15 import java.util.Iterator ;
16 import java.util.Map ;
17
18
27 public final class DeploymentHandle {
28
29 private final String UUID;
30 private final Map m_definitionChangeElements = new HashMap ();
31 private final WeakReference m_loaderRef;
32 private final WeakReference m_classRef;
33
34
39 DeploymentHandle(final Class clazz, final ClassLoader loader) {
40 if (clazz == null) {
41 throw new IllegalArgumentException ("class can not be null");
42 }
43 if (loader == null) {
44 throw new IllegalArgumentException ("loader can not be null");
45 }
46 UUID = UuidGenerator.generate(clazz);
48 m_loaderRef = new WeakReference (loader);
49 m_classRef = new WeakReference (clazz);
50 }
51
52 void registerDefinitionChange(final AdviceDefinition adviceDef, final ExpressionInfo oldExpression) {
53 m_definitionChangeElements.put(
54 adviceDef.getQualifiedName(),
55 new DefinitionChangeElement(adviceDef, oldExpression)
56 );
57 }
58
59 Class getAspectClass() {
60 return (Class ) m_classRef.get();
61 }
62
63 Map getDefintionChangeElements() {
64 return m_definitionChangeElements;
65 }
66
67 void revertChanges() {
68 final ClassLoader loader = (ClassLoader ) m_loaderRef.get();
69 SystemDefinition systemDef = SystemDefinitionContainer.getVirtualDefinitionFor(loader);
71 for (Iterator it2 = systemDef.getAspectDefinitions().iterator(); it2.hasNext();) {
72 AspectDefinition aspectDef = (AspectDefinition) it2.next();
73 for (Iterator it3 = aspectDef.getAfterAdviceDefinitions().iterator(); it3.hasNext();) {
74 AdviceDefinition adviceDef = (AdviceDefinition) it3.next();
75 DefinitionChangeElement changeElement =
76 (DefinitionChangeElement) m_definitionChangeElements.get(adviceDef.getQualifiedName());
77 if (changeElement != null) {
78 changeElement.getAdviceDef().setExpressionInfo(changeElement.getOldExpression());
79 }
80 }
81 }
82 }
83
84 public String toString() {
85 return new StringBuffer ().append("DeploymentHandle [").
86 append(UUID.toString()).append(',').
87 append(((Class ) m_classRef.get()).getName()).append(',').
88 append(m_loaderRef.get()).append(']').toString();
89 }
90
91 public int hashCode() {
92 return UUID.hashCode();
93 }
94
95 public boolean equals(Object o) {
96 return ((DeploymentHandle) o).UUID.equals(UUID);
97 }
98
99
104 static class DefinitionChangeElement {
105 private final AdviceDefinition m_adviceDef;
106 private final ExpressionInfo m_oldExpression;
107
108 public DefinitionChangeElement(final AdviceDefinition adviceDef, final ExpressionInfo oldExpression) {
109 m_adviceDef = adviceDef;
110 m_oldExpression = oldExpression;
111 }
112
113 public ExpressionInfo getOldExpression() {
114 return m_oldExpression;
115 }
116
117 public AdviceDefinition getAdviceDef() {
118 return m_adviceDef;
119 }
120 }
121 }
122 |
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