org.jboss.forge.bus.util
Class Annotations

java.lang.Object
  org.jboss.forge.bus.util.Annotations

public class Annotations
extends Object

Utility class for common @Annotation operations.

TODO: This should probably go into weld-extensions so other portable extensions can leverage it.

Author:

Constructor Summary

Annotations()

Method Summary

static <A extends Annotation> A	getAnnotation(Annotation a, Class<A> type) Inspect annotation a for a specific type of annotation.
static <A extends Annotation> A	getAnnotation(Class<?> c, Class<A> type) Inspect class c for a specific type of annotation.
static <A extends Annotation> A	getAnnotation(Method m, Class<A> type) Inspect method m for a specific type of annotation.
static boolean	isAnnotationPresent(Class<?> c, Class<? extends Annotation> type) Discover if a Class c has been annotated with type.
static boolean	isAnnotationPresent(Method m, Class<? extends Annotation> type) Discover if a Method m has been annotated with type.

Methods inherited from class java.lang.Object

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

Constructor Detail

Annotations

public Annotations()

Method Detail

isAnnotationPresent

public static boolean isAnnotationPresent(Method m,
                                          Class<? extends Annotation> type)

Discover if a Method m has been annotated with type. This also discovers annotations defined through a @Stereotype.

Parameters:

m - The method to inspect.

type - The targeted annotation class

Returns:

True if annotation is present either on the method itself, or on the declaring class of the method. Returns false if the annotation is not present.

isAnnotationPresent

public static boolean isAnnotationPresent(Class<?> c,
                                          Class<? extends Annotation> type)

Discover if a Class c has been annotated with type. This also discovers annotations defined through a @Stereotype.

Parameters:

c - The class to inspect.

type - The targeted annotation class

Returns:

True if annotation is present either on class, false if the annotation is not present.

getAnnotation

public static <A extends Annotation> A getAnnotation(Method m,
                                                     Class<A> type)

Inspect method m for a specific type of annotation. This also discovers annotations defined through a @ Stereotype.

Parameters:

m - The method to inspect.

type - The targeted annotation class

Returns:

The annotation instance found on this method or enclosing class, or null if no matching annotation was found.

getAnnotation

public static <A extends Annotation> A getAnnotation(Annotation a,
                                                     Class<A> type)

Inspect annotation a for a specific type of annotation. This also discovers annotations defined through a @ Stereotype.

Parameters:

m - The method to inspect.

type - The targeted annotation class

Returns:

The annotation instance found on this method or enclosing class, or null if no matching annotation was found.

getAnnotation

public static <A extends Annotation> A getAnnotation(Class<?> c,
                                                     Class<A> type)

Inspect class c for a specific type of annotation. This also discovers annotations defined through a @ Stereotype.

Parameters:

c - The class to inspect.

type - The targeted annotation class

Returns:

The annotation instance found on this class, or null if no matching annotation was found.