Package org.ehcache.sizeof.annotations
Class AnnotationProxyFactory
- java.lang.Object
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- org.ehcache.sizeof.annotations.AnnotationProxyFactory
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public final class AnnotationProxyFactory extends java.lang.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
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Nested Class Summary
Nested Classes Modifier and Type Class Description private static class
AnnotationProxyFactory.AnnotationInvocationHandler
Invocation handler implementing an invoke method that redirects every method call to the custom annotation method when possible; if not returns the reference annotation method default value
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Constructor Summary
Constructors Modifier Constructor Description private
AnnotationProxyFactory()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static <T extends java.lang.annotation.Annotation>
TgetAnnotationProxy(java.lang.annotation.Annotation customAnnotation, java.lang.Class<T> referenceAnnotation)
Returns a proxy on the customAnnotation, having the same type than the referenceAnnotation
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Method Detail
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getAnnotationProxy
public static <T extends java.lang.annotation.Annotation> T getAnnotationProxy(java.lang.annotation.Annotation customAnnotation, java.lang.Class<T> referenceAnnotation)
Returns a proxy on the customAnnotation, having the same type than the referenceAnnotation- Parameters:
customAnnotation
- annotation proxiedreferenceAnnotation
- type of the returned annotation- Returns:
- proxied customAnnotation with the type of referenceAnnotation
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