jp.sf.amateras.mirage.util

Class AnnotationUtils

java.lang.Object

jp.sf.amateras.mirage.util.AnnotationUtils

public class AnnotationUtils
extends java.lang.Object

TODO for daisuke

Constructor Summary

Constructors

Constructor and Description
AnnotationUtils()

Method Summary

Modifier and Type	Method and Description
static <A extends java.lang.annotation.Annotation> A	findAnnotation(java.lang.Class<?> clazz, java.lang.Class<A> annotationType) Find a single Annotation of annotationType from the supplied Class, traversing its interfaces and superclasses if no annotation can be found on the given class itself.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AnnotationUtils

public AnnotationUtils()

Method Detail

findAnnotation

public static <A extends java.lang.annotation.Annotation> A findAnnotation(java.lang.Class<?> clazz,
                                                                           java.lang.Class<A> annotationType)

Find a single Annotation of annotationType from the supplied Class, traversing its interfaces and superclasses if no annotation can be found on the given class itself.

This method explicitly handles class-level annotations which are not declared as inherited as well as annotations on interfaces.

The algorithm operates as follows: Searches for an annotation on the given class and returns it if found. Else searches all interfaces that the given class declares, returning the annotation from the first matching candidate, if any. Else proceeds with introspection of the superclass of the given class, checking the superclass itself; if no annotation found there, proceeds with the interfaces that the superclass declares. Recurring up through the entire superclass hierarchy if no match is found.

Parameters:

clazz - the class to look for annotations on

annotationType - the annotation class to look for

Returns:

the annotation found, or null if none found