ThreadbasedAspect


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22  package org.jboss.aspects;
23  
24  import org.jboss.aop.joinpoint.FieldReadInvocation;
25  import org.jboss.aop.joinpoint.FieldWriteInvocation;
26  
27  /**
28   * This aspect should be scoped PER_JOINPOINT
29   * It allows a field to be like a ThreadLocal
30   *
31   * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
32   * @version $Revision: 37406 $
33   */
34  public class ThreadbasedAspect
35  {
36     private ThreadLocal   threadbased = new ThreadLocal  ();
37  
38     public Object   access(FieldReadInvocation invocation) throws Throwable  
39     {
40        // just in case we have a primitive, we can't return null
41        if (threadbased.get() == null) return invocation.invokeNext();
42        return threadbased.get();
43     }
44  
45     public Object   access(FieldWriteInvocation invocation) throws Throwable  
46     {
47        threadbased.set(invocation.getValue());
48        return null;
49     }
50  }
51
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