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

    finally {
      dstream.close();
      is.close();
    }
    boolean match = false;
    AnnotationsAttribute visible = (AnnotationsAttribute) cf.getAttribute( AnnotationsAttribute.visibleTag );
    if ( visible != null ) {
      for ( Class annotation : filter.getAnnotations() ) {
        match = visible.getAnnotation( annotation.getName() ) != null;
        if ( match ) break;
      }
    }
    return match;
  }

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    finally {
      dstream.close();
      is.close();
    }
    boolean match = false;
    AnnotationsAttribute visible = (AnnotationsAttribute) cf.getAttribute( AnnotationsAttribute.visibleTag );
    if ( visible != null ) {
      for ( Class annotation : filter.getAnnotations() ) {
        match = visible.getAnnotation( annotation.getName() ) != null;
        if ( match ) break;
      }
    }
    return match;
  }

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    finally {
      dstream.close();
      is.close();
    }
    boolean match = false;
    AnnotationsAttribute visible = (AnnotationsAttribute) cf.getAttribute( AnnotationsAttribute.visibleTag );
    if ( visible != null ) {
      for ( Class annotation : filter.getAnnotations() ) {
        match = visible.getAnnotation( annotation.getName() ) != null;
        if ( match ) break;
      }
    }
    return match;
  }

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        EnhancerConstants.NEXT_SETTER_NAME
    );
  }


  private AnnotationsAttribute getVisibleAnnotations(FieldInfo fieldInfo) {
    AnnotationsAttribute annotationsAttribute = (AnnotationsAttribute) fieldInfo.getAttribute( AnnotationsAttribute.visibleTag );
    if ( annotationsAttribute == null ) {
      annotationsAttribute = new AnnotationsAttribute(
          fieldInfo.getConstPool(),
          AnnotationsAttribute.visibleTag
      );
      fieldInfo.addAttribute( annotationsAttribute );
    }

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    if ( makeTransient ) {
      theField.setModifiers( theField.getModifiers() | Modifier.TRANSIENT );
    }
    theField.setModifiers( Modifier.setPrivate( theField.getModifiers() ) );


    final AnnotationsAttribute annotationsAttribute = getVisibleAnnotations( theField.getFieldInfo() );
    annotationsAttribute.addAnnotation( new Annotation( Transient.class.getName(), constPool ) );
    return theField;
  }

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    finally {
      dstream.close();
      is.close();
    }
    boolean match = false;
    AnnotationsAttribute visible = (AnnotationsAttribute) cf.getAttribute( AnnotationsAttribute.visibleTag );
    if ( visible != null ) {
      for ( Class annotation : filter.getAnnotations() ) {
        match = visible.getAnnotation( annotation.getName() ) != null;
        if ( match ) break;
      }
    }
    return match;
  }

View Full Code Here


   }
   
   private void copyAnnotations(javassist.bytecode.MethodInfo src, javassist.bytecode.MethodInfo dest, String annotationTag)
   {
      AnnotationsAttribute attribute = (AnnotationsAttribute) src.getAttribute(annotationTag);
      if (attribute != null)
      {
         dest.addAttribute(attribute.copy(dest.getConstPool(), EMPTY_HASHMAP));
      }
   }

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      copyAnnotations(srcFile, destFile, AnnotationsAttribute.visibleTag);
   }
   
   private void copyAnnotations(ClassFile src, ClassFile dest, String annotationTag)
   {
      AnnotationsAttribute attribute = (AnnotationsAttribute) src.getAttribute(annotationTag);
      if (attribute != null)
      {
         dest.addAttribute(attribute.copy(dest.getConstPool(), EMPTY_HASHMAP));
      }
   }

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    }


    public static void createAnnotation(CtField ctField, Class<? extends Annotation> annotationType, Map<String, MemberValue> members) {
        if (ctField.hasAnnotation(annotationType)) return;


        AnnotationsAttribute attr = new AnnotationsAttribute(ctField.getFieldInfo().getConstPool(), AnnotationsAttribute.visibleTag);
        boolean isNewAttr = true;
        List<AttributeInfo> attributeInfos = ctField.getFieldInfo().getAttributes();
        for (AttributeInfo attributeInfo : attributeInfos) {
            if (attributeInfo instanceof AnnotationsAttribute) {
                attr = (AnnotationsAttribute) attributeInfo;
                isNewAttr = false;
            }
        }


        javassist.bytecode.annotation.Annotation[] annotations = attr.getAnnotations();
        javassist.bytecode.annotation.Annotation annotation = new javassist.bytecode.annotation.Annotation(annotationType.getName(), attr.getConstPool());


        for (javassist.bytecode.annotation.Annotation annotation1 : annotations) {
            if (annotation1.getTypeName().equals(annotationType.getName())) {
                annotation = annotation1;
                break;
            }
        }


        for (Map.Entry<String, MemberValue> member : members.entrySet()) {
            try {
                if (annotation.getMemberValue(member.getKey()) == null) {
                    annotation.addMemberValue(member.getKey(), member.getValue());
                }
            } catch (Exception e) {
                e.printStackTrace();
                annotation.addMemberValue(member.getKey(), member.getValue());
            }


        }


        attr.addAnnotation(annotation);
        if (isNewAttr) {
            ctField.getFieldInfo().addAttribute(attr);
        }


    }

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    public static void createAnnotation(CtClass ctClass, Class<? extends Annotation> annotationType, Map<String, MemberValue> members) {




        if (ctClass.hasAnnotation(annotationType)) return;


        AnnotationsAttribute attr = new AnnotationsAttribute(ctClass.getClassFile().getConstPool(), AnnotationsAttribute.visibleTag);
        boolean isNewAttr = true;
        List<AttributeInfo> attributeInfos = ctClass.getClassFile2().getAttributes();
        for (AttributeInfo attributeInfo : attributeInfos) {
            if (attributeInfo instanceof AnnotationsAttribute) {
                attr = (AnnotationsAttribute) attributeInfo;
                isNewAttr = false;
            }
        }


        javassist.bytecode.annotation.Annotation[] annotations = attr.getAnnotations();
        javassist.bytecode.annotation.Annotation annotation = new javassist.bytecode.annotation.Annotation(annotationType.getName(), attr.getConstPool());


        for (javassist.bytecode.annotation.Annotation annotation1 : annotations) {
            if (annotation1.getTypeName().equals(annotationType.getName())) {
                annotation = annotation1;
                break;
            }
        }


        for (Map.Entry<String, MemberValue> member : members.entrySet()) {
            try {
                if (annotation.getMemberValue(member.getKey()) == null) {
                    annotation.addMemberValue(member.getKey(), member.getValue());
                }
            } catch (Exception e) {
                e.printStackTrace();
                annotation.addMemberValue(member.getKey(), member.getValue());
            }


        }


        attr.addAnnotation(annotation);


        if (isNewAttr) {
            ctClass.getClassFile().addAttribute(attr);
        }

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