Examples of javassist.bytecode.AnnotationsAttribute

javassist.bytecode.AnnotationsAttribute
A class representing RuntimeVisibleAnnotations_attribute and RuntimeInvisibleAnnotations_attribute.
To obtain an AnnotationAttribute object, invoke getAttribute(AnnotationsAttribute.visibleTag) in ClassFile, MethodInfo, or FieldInfo. The obtained attribute is a runtime visible annotations attribute. If the parameter is AnnotationAttribute.invisibleTag, then the obtained attribute is a runtime invisible one.
For example,
This code snippet retrieves an annotation of the type Author from the MethodInfo object specified by minfo. Then, it prints the value of name in Author.
If the annotation type Author is annotated by a meta annotation:
Then Author is visible at runtime. Therefore, the third statement of the code snippet above must be changed into:
The attribute tag must be visibleTag instead of invisibleTag.
If the member value of an annotation is not specified, the default value is used as that member value. If so, getMemberValue() in Annotation returns null since the default value is not included in the AnnotationsAttribute. It is included in the AnnotationDefaultAttribute of the method declared in the annotation type.
If you want to record a new AnnotationAttribute object, execute the following snippet:
The last statement is necessary if the class file was produced by Javassist or JDK 1.4. Otherwise, it is not necessary. @see AnnotationDefaultAttribute @see javassist.bytecode.annotation.Annotation

    sb.append("return f;");
    sb.append("}");
    mnew = CtNewMethod.make(sb.toString(), mainClass);


    ConstPool cp = mnew.getMethodInfo().getConstPool();
    AnnotationsAttribute attr = new AnnotationsAttribute(cp,
        AnnotationsAttribute.visibleTag);


    javassist.bytecode.annotation.Annotation producesAnnotation = new javassist.bytecode.annotation.Annotation(
        "javax.enterprise.inject.Produces", cp);
    javassist.bytecode.annotation.Annotation zkScopedAnnotation = new javassist.bytecode.annotation.Annotation(
        "org.zkoss.cdi.context.IdSpaceScoped", cp);
    javassist.bytecode.annotation.Annotation zkCompAnnotation = new javassist.bytecode.annotation.Annotation(
        "org.zkoss.cdi.inject.ComponentId", cp);
    zkCompAnnotation.addMemberValue("value", new StringMemberValue(field
        .getName(), cp));
    
    attr.addAnnotation(producesAnnotation);
    attr.addAnnotation(zkScopedAnnotation);
    attr.addAnnotation(zkCompAnnotation);
    mnew.getMethodInfo().addAttribute(attr);
    
    mainClass.addMethod(mnew);
  }

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      final String typeName = SOAPMessage.class.getName().replace('.', '/') ;
      final String signature = 'L' + superClassName + ';' + 'L' + interfaceName + "<L" + typeName + ";>;" ;
      final SignatureAttribute signatureAttribute = new SignatureAttribute(constantPool, signature) ;
      seiClass.getClassFile().addAttribute(signatureAttribute) ;


      AnnotationsAttribute attribute = new AnnotationsAttribute(
          constantPool, AnnotationsAttribute.visibleTag);
      Annotation annotation = new Annotation(
          "javax.xml.ws.WebServiceProvider", constantPool);
      StringMemberValue strValue1 = new StringMemberValue(constantPool);
      strValue1.setValue(epInfo.getWSDLFileName());
      annotation.addMemberValue("wsdlLocation", strValue1);
      StringMemberValue strValue2 = new StringMemberValue(constantPool);
      strValue2.setValue(epInfo.getServiceName());
      annotation.addMemberValue("serviceName", strValue2);
      StringMemberValue strValue3 = new StringMemberValue(constantPool);
      strValue3.setValue(epInfo.getPortName());
      annotation.addMemberValue("portName", strValue3);


      StringMemberValue strValue4 = new StringMemberValue(constantPool);
      strValue4.setValue(epInfo.getNamespace());
      annotation.addMemberValue("targetNamespace", strValue4);


      attribute.addAnnotation(annotation);


      Annotation annotation2 = new Annotation("javax.xml.ws.ServiceMode",
          constantPool);
      EnumMemberValue enumValue = new EnumMemberValue(constantPool);
      enumValue.setType("javax.xml.ws.Service$Mode");
      enumValue.setValue("MESSAGE");
      annotation2.addMemberValue("value", enumValue);
      attribute.addAnnotation(annotation2);


      if (epInfo.isAddressing() && JBossDeployerUtil.getWSImpl().equals(JBossDeployerUtil.WSIMPL_CXF))
      {
        Annotation annotation3 = new Annotation("javax.xml.ws.soap.Addressing", constantPool);
        BooleanMemberValue boolEnabled = new BooleanMemberValue(constantPool);
        boolEnabled.setValue(true);
        BooleanMemberValue boolRequired = new BooleanMemberValue(constantPool);
        boolRequired.setValue(true);
        annotation3.addMemberValue("enabled", boolEnabled);
        annotation3.addMemberValue("required", boolEnabled);
        attribute.addAnnotation(annotation3);
      }


      if (includeHandlers)
      {
        final Annotation handlerChainAnnotation = new Annotation("javax.jws.HandlerChain", constantPool) ;
        final StringMemberValue handlerValue = new StringMemberValue(constantPool) ;
        handlerValue.setValue("esb-jaxws-handlers.xml") ;
        handlerChainAnnotation.addMemberValue("file", handlerValue) ;
        attribute.addAnnotation(handlerChainAnnotation) ;
      }
      
      seiClass.getClassFile().addAttribute(attribute);
      
      final String siClassName = ServiceInvoker.class.getName() ;

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            //we'll be adding new constants to the class file (for generics and annotations)
            ConstPool constPool = newClassFile.getConstPool();


            //copy the annotations on the class
            AnnotationsAttribute annotations = (AnnotationsAttribute) originalClassFile
                .getAttribute(AnnotationsAttribute.visibleTag);
            AnnotationsAttribute newAnnotations = copyAnnotations(annotations, constPool);


            //add our @Simplified annotation to the new class
            newAnnotations = addSimplifiedClassAnnotation(originalClass.getName(), newAnnotations, constPool);
            newClassFile.addAttribute(newAnnotations);

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            Annotation[] newClassAnnotations = new Annotation[origAnnotations.length];
            for (int i = 0; i < newClassAnnotations.length; ++i) {
                newClassAnnotations[i] = cloneAnnotation(origAnnotations[i], constPool);
            }


            AnnotationsAttribute newAnnotations = new AnnotationsAttribute(constPool, AnnotationsAttribute.visibleTag);
            newAnnotations.setAnnotations(newClassAnnotations);


            return newAnnotations;
        }


        return null;

View Full Code Here


    private static AnnotationsAttribute addSimplifiedClassAnnotation(String originalClassName,
        AnnotationsAttribute annotations, ConstPool constPool) {


        if (annotations == null) {
            annotations = new AnnotationsAttribute(constPool, AnnotationsAttribute.visibleTag);
        }


        Annotation simplified = new Annotation(SimplifiedClass.class.getName(), constPool);
        simplified.addMemberValue("originalClass", new ClassMemberValue(originalClassName, constPool));

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    private static AnnotationsAttribute addSimplifiedMethodAnnotation(AnnotationsAttribute annotations,
        ConstPool constPool) {


        if (annotations == null) {
            annotations = new AnnotationsAttribute(constPool, AnnotationsAttribute.visibleTag);
        }


        annotations.addAnnotation(new Annotation(SimplifiedMethod.class.getName(), constPool));


        return annotations;

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   */
  private void markAsEnhanced(CtClass aCtClazz) {
    ClassFile classFile = aCtClazz.getClassFile();
    ConstPool constPool = classFile.getConstPool();


    AnnotationsAttribute annoAttr = (AnnotationsAttribute) classFile
            .getAttribute(AnnotationsAttribute.visibleTag);


    // Create annotation attribute if it does not exist
    if (annoAttr == null) {
      annoAttr = new AnnotationsAttribute(constPool, AnnotationsAttribute.visibleTag);
    }


    // Create annotation if it does not exist
    Annotation a = new Annotation(EnhancedClassFile.class.getName(), constPool);


    // Replace annotation
    annoAttr.addAnnotation(a);


    // Replace annotation attribute
    classFile.addAttribute(annoAttr);
  }

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  private void enhanceResourceMetaData(JavaSource aAST, Class<?> aClazz, CtClass aCtClazz,
          Multimap<String, String> aReportData) {
    ClassFile classFile = aCtClazz.getClassFile();
    ConstPool constPool = classFile.getConstPool();


    AnnotationsAttribute annoAttr = (AnnotationsAttribute) classFile
            .getAttribute(AnnotationsAttribute.visibleTag);


    // Create annotation attribute if it does not exist
    if (annoAttr == null) {
      annoAttr = new AnnotationsAttribute(constPool, AnnotationsAttribute.visibleTag);
    }


    // Create annotation if it does not exist
    Annotation a = annoAttr.getAnnotation(ResourceMetaData.class.getName());
    if (a == null) {
      a = new Annotation(ResourceMetaData.class.getName(), constPool);
      // Add a name, otherwise there will be none in the generated descriptor.
      a.addMemberValue("name", new StringMemberValue(
              ResourceMetaDataFactory.getDefaultName(aClazz), constPool));
    }


    // Update description from JavaDoc
    String doc = Util.getComponentDocumentation(aAST, aClazz.getName());
    enhanceMemberValue(a, "description", doc, overrideComponentDescription,
            ResourceMetaDataFactory.getDefaultDescription(aClazz), constPool, aReportData, aClazz);


    // Update version
    enhanceMemberValue(a, "version", componentVersion, overrideComponentVersion,
            ResourceMetaDataFactory.getDefaultVersion(aClazz), constPool, aReportData, aClazz);


    // Update vendor
    enhanceMemberValue(a, "vendor", componentVendor, overrideComponentVendor,
            ResourceMetaDataFactory.getDefaultVendor(aClazz), constPool, aReportData, aClazz);


    // Update copyright
    enhanceMemberValue(a, "copyright", componentCopyright, overrideComponentCopyright,
            ResourceMetaDataFactory.getDefaultCopyright(aClazz), constPool, aReportData, aClazz);


    // Replace annotation
    annoAttr.addAnnotation(a);


    // Replace annotation attribute
    classFile.addAttribute(annoAttr);
  }

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      }


      // Update the "description" field of the annotation
      try {
        CtField ctField = aCtClazz.getField(field.getName());
        AnnotationsAttribute annoAttr = (AnnotationsAttribute) ctField.getFieldInfo().getAttribute(
                AnnotationsAttribute.visibleTag);


        // Locate and update annotation
        if (annoAttr != null) {
          Annotation[] annotations = annoAttr.getAnnotations();


          // Update existing annotation
          for (Annotation a : annotations) {
            if (a.getTypeName().equals(
                    org.apache.uima.fit.descriptor.ConfigurationParameter.class.getName())
                    || a.getTypeName().equals(
                            org.apache.uima.fit.descriptor.ExternalResource.class.getName())
                    || a.getTypeName().equals("org.uimafit.descriptor.ConfigurationParameter")
                    || a.getTypeName().equals("org.uimafit.descriptor.ExternalResource")) {
              if (a.getMemberValue("description") == null) {
                a.addMemberValue("description", new StringMemberValue(pdesc, aCtClazz
                        .getClassFile().getConstPool()));
                getLog().info("Enhanced description of " + type + " [" + pname + "]");
                // Replace updated annotation
                annoAttr.addAnnotation(a);
              } else {
                // Extract configuration parameter information from the uimaFIT annotation
                // We only want to override if the description is not set yet.
                getLog().info("Not overwriting description of " + type + " [" + pname + "] ");
              }

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        }
        
        for (CtField cf: ctClass.getDeclaredFields()) {
            if (hasAnnotation(cf, siena.Max.class.getName())) {
              // retrieves @siena.Max value
              AnnotationsAttribute attr = getAnnotations(cf);
              Annotation orig = attr.getAnnotation(Max.class.getName());
              int val = ((IntegerMemberValue)orig.getMemberValue("value")).getValue();


              // adds @play.data.validation.MaxSize value
              Map<String, MemberValue> map = new HashMap<String, MemberValue>();
              map.put("value", new IntegerMemberValue(attr.getConstPool(), val));


                createAnnotation(
                attr, 
                play.data.validation.MaxSize.class, map);
            }
            if (hasAnnotation(cf, siena.NotNull.class.getName())) {
              // retrieves @siena.NotNull value
              AnnotationsAttribute attr = getAnnotations(cf);
              // adds @play.data.validation.Required value
              createAnnotation(
                attr, 
                play.data.validation.Required.class);
            }
            if (hasAnnotation(cf, siena.DateTime.class.getName())) {
              // retrieves @siena.DateTime value
              AnnotationsAttribute attr = getAnnotations(cf);
              
              // adds @play.data.binding.As(lang={"*"}, value={"yyyy-MM-dd HH:mm:ss"})
              Map<String, MemberValue> map = new HashMap<String, MemberValue>();
              ConstPool cp = attr.getConstPool();
              // creates lang array
              MemberValue[] langArray = new MemberValue[1];
              langArray[0] = new StringMemberValue("*", cp);
              ArrayMemberValue langMember = new ArrayMemberValue(cp);
              langMember.setValue(langArray);

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