org.apache.deltaspike.core.util.metadata

Class AnnotationInstanceProvider

java.lang.Object

org.apache.deltaspike.core.util.metadata.AnnotationInstanceProvider

All Implemented Interfaces:

Serializable, java.lang.annotation.Annotation, InvocationHandler

public class AnnotationInstanceProvider
extends Object
implements java.lang.annotation.Annotation, InvocationHandler, Serializable

A small helper class to create an Annotation instance of the given annotation class via Proxy. The annotation literal gets filled with the default values.

This class can be used to dynamically create Annotations which can be usd in AnnotatedTyp. This is e.g. the case if you configure an annotation via properties or XML file. In those cases you cannot use AnnotationLiteral because the type is not known at compile time.

usage:

 String annotationClassName = ...;
 Class annotationClass =
     (Class) ClassUtils.getClassLoader(null).loadClass(annotationClassName);
 Annotation a = AnnotationInstanceProvider.of(annotationClass)
 

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
Class<? extends java.lang.annotation.Annotation>	annotationType()
boolean	equals(Object o)
int	hashCode()
Object	invoke(Object proxy, Method method, Object[] args)
static <T extends java.lang.annotation.Annotation> T	of(Class<T> annotationClass) Creates an annotation instance for the given annotation class
static <T extends java.lang.annotation.Annotation> T	of(Class<T> annotationClass, Map<String,?> values) Creates an annotation instance for the given annotation class
String	toString() Copied from Apache OWB (javax.enterprise.util.AnnotationLiteral#toString()) with minor changes.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

of

public static <T extends java.lang.annotation.Annotation> T of(Class<T> annotationClass,
                                                               Map<String,?> values)

Creates an annotation instance for the given annotation class

Type Parameters:

T - current type

Parameters:

annotationClass - type of the target annotation

values - A non-null map of the member values, keys being the name of the members

Returns:

annotation instance for the given type

of

public static <T extends java.lang.annotation.Annotation> T of(Class<T> annotationClass)

Creates an annotation instance for the given annotation class

Type Parameters:

T - current type

Parameters:

annotationClass - type of the target annotation

Returns:

annotation instance for the given type

invoke

public Object invoke(Object proxy,
                     Method method,
                     Object[] args)
              throws Exception

Specified by:

invoke in interface InvocationHandler

Throws:

Exception

annotationType

public Class<? extends java.lang.annotation.Annotation> annotationType()

Specified by:

annotationType in interface java.lang.annotation.Annotation

toString

public String toString()

Copied from Apache OWB (javax.enterprise.util.AnnotationLiteral#toString()) with minor changes.

Specified by:

toString in interface java.lang.annotation.Annotation

Overrides:

toString in class Object

Returns:

the current state of the annotation as string

equals

public boolean equals(Object o)

Specified by:

equals in interface java.lang.annotation.Annotation

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface java.lang.annotation.Annotation

Overrides:

hashCode in class Object