javassist.bytecode

Class AnnotationDefaultAttribute

public class AnnotationDefaultAttribute extends AttributeInfo

A class representing AnnotationDefault_attribute.

For example, if you declare the following annotation type:

 @interface Author {
   String name() default "Shakespeare";
   int age() default 99;
 }

The defautl values of name and age are stored as annotation default attributes in Author.class. The following code snippet obtains the default value of name:

 ClassPool pool = ...
 CtClass cc = pool.get("Author");
 CtMethod cm = cc.getDeclaredMethod("age");
 MethodInfo minfo = cm.getMethodInfo();
 AnnotationDefaultAttribute ada
         = (AnnotationDefaultAttribute)
           minfo.getAttribute(AnnotationDefaultAttribute.tag);
 MemberValue value = ada.getDefaultValue());    // default value of age

If the following statement is executed after the code above, the default value of age is set to 80:

 ada.setDefaultValue(new IntegerMemberValue(minfo.getConstPool(), 80));

Field Summary
static String	tag The name of the `AnnotationDefault` attribute.

Constructor Summary
	AnnotationDefaultAttribute(ConstPool cp, byte[] info) Constructs an `AnnotationDefault_attribute`.
	AnnotationDefaultAttribute(ConstPool cp) Constructs an empty `AnnotationDefault_attribute`.

Method Summary
AttributeInfo	copy(ConstPool newCp, Map classnames) Copies this attribute and returns a new copy.
MemberValue	getDefaultValue() Obtains the default value represented by this attribute.
void	setDefaultValue(MemberValue value) Changes the default value represented by this attribute.
String	toString() Returns a string representation of this object.