private static Map<String, Object> getAnnotationDefaults(
Class<? extends Annotation> annotationClass) {
Map<String, Object> defaults = new LinkedHashMap<String, Object>();
try {
Field field = Class.class.getDeclaredField("annotationType");
field.setAccessible(true);
sun.reflect.annotation.AnnotationType type =
(sun.reflect.annotation.AnnotationType) field.get(annotationClass);
defaults.putAll(type.memberDefaults());
} catch (Exception ignored) {
}
return defaults;
}
/**
* Returns the default value for the annotation member represented by this {@code Method}
* instance. If the member is of a primitive type, an instance of the corresponding wrapper type
* is returned. Returns null if no default is associated with the member, or if the method
* instance does not represent a declared member of an annotation type.
*
* @return the default value for the annotation member represented by this {@code Method}
* instance.
* @throws TypeNotPresentException if the annotation is of type {@link Class} and no definition
* can be found for the default class value.
* @since 1.5
*/
public Object getDefaultValue() {
if (annotationDefault == null) return null;
Class<?> memberType = AnnotationType.invocationHandlerReturnType(getReturnType());
Object result =
AnnotationParser.parseMemberValue(
memberType,
ByteBuffer.wrap(annotationDefault),
sun.misc.SharedSecrets.getJavaLangAccess().getConstantPool(getDeclaringClass()),
getDeclaringClass());
if (result instanceof sun.reflect.annotation.ExceptionProxy)
throw new AnnotationFormatError("Invalid default: " + this);
return result;
}