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1
22 package org.jboss.aop.advice;
23
24 import java.io.StringReader  ;
25 import java.lang.ref.WeakReference ;
26 import java.util.ArrayList ;
27 import java.util.Arrays ;
28 import java.util.Collection ;
29 import java.util.HashSet ;
30 import java.util.Iterator ;
31 import java.util.List ;
32
33 import org.jboss.aop.Advisor;
34 import org.jboss.aop.AspectManager;
35 import org.jboss.aop.pointcut.Pointcut;
36 import org.jboss.aop.pointcut.PointcutExpression;
37 import org.jboss.aop.pointcut.ast.ASTCFlowExpression;
38 import org.jboss.aop.pointcut.ast.ParseException;
39 import org.jboss.aop.pointcut.ast.PointcutExpressionParser;
40
41
47 public class AdviceBinding
48 {
49 private static volatile long counter = 0;
50
51 protected String name;
52 protected Pointcut pointcut;
53 protected ASTCFlowExpression cflow;
54 protected String cflowString;
55
56 protected Collection advisors = new HashSet ();
58 protected InterceptorFactory[] interceptorFactories = new InterceptorFactory[0];
59
60 public AdviceBinding() {}
61
62 public AdviceBinding(String name, Pointcut p, ASTCFlowExpression cflow, String cflowString, InterceptorFactory[] factories) throws ParseException
63 {
64 this.name = name;
65 interceptorFactories = factories;
66 this.cflow = cflow;
67
68 pointcut = p;
69 this.cflowString = cflowString;
70 }
71
72
79 public AdviceBinding(String pointcutExpression, String cflow) throws ParseException
80 {
81 this(Long.toString(System.currentTimeMillis()) + ":" + Long.toString(counter++), pointcutExpression, cflow);
82 }
83
84
91 public AdviceBinding(String name, String pointcutExpression, String cflow) throws ParseException
92 {
93 this.name = name;
94 setPointcutExpression(pointcutExpression);
95 setCFlowExpression(cflow);
96 interceptorFactories = new InterceptorFactory[0];
97 }
98
99 public void setCFlowExpression(String cflow)
100 throws ParseException
101 {
102 if (cflow != null)
103 {
104 cflowString = cflow;
105 this.cflow = new PointcutExpressionParser(new StringReader (cflowString)).CFlowExpression();
106 }
107 }
108
109 public void setPointcutExpression(String pointcutExpression)
110 throws ParseException
111 {
112 pointcut = new PointcutExpression(Long.toString(System.currentTimeMillis()) + ":" + Long.toString(counter++), pointcutExpression);
113 }
114
115 public void addInterceptorFactory(InterceptorFactory factory)
116 {
117 List list = Arrays.asList(interceptorFactories);
118 list = new ArrayList (list);
119 list.add(factory);
120 interceptorFactories = (InterceptorFactory[]) list.toArray(new InterceptorFactory[list.size()]);
121 }
122
123
124
131 public void addInterceptor(Class clazz)
132 {
133 addInterceptorFactory(new GenericInterceptorFactory(clazz));
134 }
135
136 public String getName()
137 {
138 return name;
139 }
140
141 public InterceptorFactory[] getInterceptorFactories()
142 {
143 return interceptorFactories;
144 }
145
146 public void setName(String name)
147 {
148 this.name = name;
149 }
150
151 public void addAdvisor(Advisor advisor)
152 {
153 if (AspectManager.verbose) System.out.println("[debug] added advisor: " + advisor.getName() + " from binding: " + name);
154 synchronized (advisors)
157 {
158 if (advisors.size() > 0)
159 {
160 Iterator it = advisors.iterator();
161 while (it.hasNext())
162 {
163 WeakReference ref = (WeakReference ) it.next();
164 Object obj = ref.get();
165 if (obj == null) it.remove();
166 else if(obj.equals(advisor))
167 {
168 return; }
170 }
171 }
172 advisors.add(new WeakReference (advisor));
173 }
174
175 }
176
177 public boolean hasAdvisors()
178 {
179 return advisors.size() > 0;
180 }
181
182 public ArrayList getAdvisors()
183 {
184 ArrayList list = new ArrayList (advisors.size());
185 synchronized (advisors)
186 {
187 Iterator it = advisors.iterator();
188 while (it.hasNext())
189 {
190 WeakReference ref = (WeakReference ) it.next();
191 Object advisor = ref.get();
192 if (advisor != null)
193 {
194 list.add(advisor);
195 }
196 else
197 {
198 it.remove();
199 }
200 }
201 }
202 return list;
203 }
204
205 public void clearAdvisors()
206 {
207 synchronized (advisors)
208 {
209 for (Iterator it = advisors.iterator(); it.hasNext();)
210 {
211 WeakReference ref = (WeakReference ) it.next();
212 Object obj = ref.get();
213 if (obj != null)
214 {
215 Advisor advisor = (Advisor) obj;
216 if (advisor.getManager().isAdvisorRegistered(advisor))
217 {
218 advisor.removeAdviceBinding(this);
219 }
220 }
221 }
222 advisors.clear();
223 }
224 }
225
226 public boolean equals(Object obj)
227 {
228 if (obj == this) return true;
229 if (!(obj instanceof AdviceBinding)) return false;
230 return ((AdviceBinding) obj).getName().equals(name);
231 }
232
233 public int hashCode()
234 {
235 return name.hashCode();
236 }
237
238 public Pointcut getPointcut()
239 {
240 return pointcut;
241 }
242
243 public ASTCFlowExpression getCFlow()
244 {
245 return cflow;
246 }
247
248 public String getCFlowString()
249 {
250 return cflowString;
251 }
252 }
253 |
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