org.springframework.data.util

Class AnnotationDetectionMethodCallback<A extends Annotation>

java.lang.Object

org.springframework.data.util.AnnotationDetectionMethodCallback<A>

All Implemented Interfaces:

ReflectionUtils.MethodCallback

public class AnnotationDetectionMethodCallback<A extends Annotation>
extends Object
implements ReflectionUtils.MethodCallback

ReflectionUtils.MethodCallback to find annotations of a given type.

Author:

Oliver Gierke, Christoph Strobl, Mark Paluch, Johannes Englmeier

Constructor Summary

Constructors

Constructor and Description
AnnotationDetectionMethodCallback(Class<A> annotationType) Creates a new AnnotationDetectionMethodCallback for the given annotation type.
AnnotationDetectionMethodCallback(Class<A> annotationType, boolean enforceUniqueness) Creates a new AnnotationDetectionMethodCallback for the given annotation type.

Method Summary

Modifier and Type	Method and Description
void	doWith(Method method)
A	getAnnotation()
Method	getMethod()
Method	getRequiredMethod() Returns the method with the configured annotation.
boolean	hasFoundAnnotation() Returns whether an annotation was found.
<T> T	invoke(Object target, Object... args) Invokes the method using reflection.

Methods inherited from class java.lang.Object

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

Constructor Detail

AnnotationDetectionMethodCallback

public AnnotationDetectionMethodCallback(Class<A> annotationType)

Creates a new AnnotationDetectionMethodCallback for the given annotation type.

Parameters:

annotationType - must not be null.

AnnotationDetectionMethodCallback

public AnnotationDetectionMethodCallback(Class<A> annotationType,
                                         boolean enforceUniqueness)

Creates a new AnnotationDetectionMethodCallback for the given annotation type.

Parameters:

annotationType - must not be null.

enforceUniqueness - whether to fail if multiple methods with the annotation are found.

Method Detail

getMethod

@Nullable
public Method getMethod()

Returns:

the method

getRequiredMethod

public Method getRequiredMethod()

Returns the method with the configured annotation.

Returns:

Throws:

IllegalStateException - in case no method with the configured annotation was found.

getAnnotation

@Nullable
public A getAnnotation()

Returns:

the annotation

hasFoundAnnotation

public boolean hasFoundAnnotation()

Returns whether an annotation was found.

Returns:

doWith

public void doWith(Method method)
            throws IllegalArgumentException,
                   IllegalAccessException

Specified by:

doWith in interface ReflectionUtils.MethodCallback

Throws:

IllegalArgumentException

IllegalAccessException

invoke

@Nullable
public <T> T invoke(@Nullable
                              Object target,
                              Object... args)

Invokes the method using reflection.

Parameters:

target - can be null for static method invocations.

args - method arguments.

Returns:

Since:

2.7