OptimizedConstructionTransformer


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15    * Lesser General Public License for more details.
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22  package org.jboss.aop.instrument;
23  
24  
25  import javassist.CtClass;
26  import javassist.CtConstructor;
27  import javassist.Modifier;
28  
29  /**
30   * Comment
31   *
32   * @author <a HREF="mailto:kabir.khan@jboss.org">Kabir Khan</a>
33   * @version $Revision$
34   */
35  public class OptimizedConstructionTransformer extends ConstructionTransformer
36  {
37  
38     public OptimizedConstructionTransformer(Instrumentor instrumentor)
39     {
40        super(instrumentor);
41     }
42  
43     protected void insertInterception(CtConstructor constructor, int index) throws Exception  
44     {
45        CtClass type = constructor.getDeclaringClass();
46        OptimizedConstructionInvocations.createOptimizedInvocationClass(instrumentor, type, constructor, index);
47        createWrapper(type, constructor,  constructor.getDeclaringClass(), index);
48     }
49  
50     private void createWrapper(CtClass type, CtConstructor constructor, CtClass clazz, int index) throws Exception  
51     {
52        String   invocationClass = OptimizedConstructionInvocations.getOptimizedInvocationClassName(type, index);
53        if(!Modifier.isPublic(constructor.getModifiers())) {
54           invocationClass = invocationClass.substring(invocationClass.lastIndexOf('.') + 1);
55           invocationClass = clazz.getName() + "$" + invocationClass;
56        }
57        
58        String   infoName = getConstructionInfoFieldName(clazz.getSimpleName(), index);
59        
60        String   code =
61           "    " + constructionInfoFromWeakReference("info", infoName) +
62           "    org.jboss.aop.advice.Interceptor[] interceptors = info.getInterceptors(); " +
63           "    if (interceptors != (org.jboss.aop.advice.Interceptor[])null) " +
64           "    { " +
65           "       " + invocationClass + " invocation = new " + invocationClass + "(interceptors, " +
66           Instrumentor.HELPER_FIELD_NAME + ".getConstructors()[" + index + "]); " +
67           OptimizedBehaviourInvocations.setArguments(constructor.getParameterTypes().length) +
68           "       invocation.setAdvisor(" + Instrumentor.HELPER_FIELD_NAME + "); " +
69           "       invocation.setTargetObject(this); " +
70           "       invocation.invokeNext(); " +
71           "    } ";
72  
73        constructor.insertAfter(code, false);
74     }}
75
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