Package 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	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	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 Details

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 Details

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