public final class AnnotationProxyFactory extends Object
Allows you to transform the type of your custom annotation to a reference annotation type.
It can come handy when you want to allow the consumers of your library not to depend on your API because of the annotations, still allowing them to use the original annotation methods.
Example :
getting a custom annotation from a class
my.Annotation customAnnotation = klazz.getAnnotation(my.Annotation.class);
if this annotation is "similar" (duck-typing, same methods) to the reference one, I can get a proxy to it, whose type is the reference annotation
ehcache.Annotation annotation = AnnotationProxyFactory.getAnnotationProxy(customAnnotation, ehcache.Annotation.class);
so my library can apply the behavior when the default annotation is used
@ehcache.Annotation(action="true")
public class UserClass {}
or when a custom one is used, since all calls to action() will be caught and redirected to the custom annotation action method, if it exists,
or fall back to the reference action method
@my.Annotation(action="true")
public class UserClass {}
Modifier and Type | Method and Description |
---|---|
static <T extends Annotation> |
getAnnotationProxy(Annotation customAnnotation,
Class<T> referenceAnnotation)
Returns a proxy on the customAnnotation, having the same type than the referenceAnnotation
|
public static <T extends Annotation> T getAnnotationProxy(Annotation customAnnotation, Class<T> referenceAnnotation)
customAnnotation
- referenceAnnotation
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