[jboss-user] [Javassist user questions] - Re: adding annotations

[cat4hire]

Hi,
I'm still fighting with the annotation problem. I've made a code clean up, and now I've got the following piece of code:


  | 		    // make a new class 
  | 		    CtClass newProxyClass = pool.makeClass( subProxyClassName );
  | 		    newProxyClass.setSuperclass( baseProxyClass );
  | 		    
  | 		    // place a default constructor in the new class
  | 		    CtConstructor constructor = new CtConstructor(null, newProxyClass );
  | 		    constructor.setBody(";");
  | 		    newProxyClass.addConstructor(constructor);
  | 
  | 		    // get the class file and add the annotation
  | 		    ClassFile classFile = newProxyClass.getClassFile();
  | 		    ConstPool constantPool = classFile.getConstPool();
  | 		    AnnotationsAttribute attr = new AnnotationsAttribute(constantPool, AnnotationsAttribute.visibleTag);
  | 		    javassist.bytecode.annotation.Annotation a = new javassist.bytecode.annotation.Annotation(this.annotationClassName, constantPool);
  | 		    attr.setAnnotation(a);
  | 		    classFile.addAttribute(attr);
  | 		    classFile.setVersionToJava5();
  | 
  | 		    // transform the classfile into bytecode
  | 		    ByteArrayOutputStream bos = new ByteArrayOutputStream();
  | 		    DataOutputStream os = new DataOutputStream( bos );
  | 		    classFile.write( os );
  | 		    os.close();
  | 
  | 		    // load the class
  | 		    return this.defineClass(subProxyClassName, bytecode, 0, bytecode.length);
  | 

at runtime no exception are thrown, but the new class still has no annotation added!

Then I saved the bytecode to a file in two cases, the above piece of code and the one without the addAttribute, and I can see they are different, so it seems as the annotation is added, but it is not visible to the runtime system.

Please, any suggestion is appreciated!!!

Thanks,
Luca

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