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

[cat4hire]

After a lot I found that the following is the code that works for me:


  | 	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();
  | 	
  | 	
  | 	ByteArrayOutputStream bos = new ByteArrayOutputStream();
  | 	DataOutputStream os = new DataOutputStream( bos );
  | 	classFile.write( os );
  | 	os.close();
  | 	
  | 	// all done
  | 	return bos.toByteArray();
  | 

the above produces the byte code for a class with the added annotation.

Thanks,
Luca

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