org.junit.platform.commons.util

Class AnnotationUtils

java.lang.Object

org.junit.platform.commons.util.AnnotationUtils

@API(status=INTERNAL,
     since="1.0")
public final class AnnotationUtils
extends Object

Collection of utilities for working with annotations.

DISCLAIMER

These utilities are intended solely for usage within the JUnit framework itself. Any usage by external parties is not supported. Use at your own risk!

Some utilities are published via the maintained AnnotationSupport class.

Since:

1.0

See Also:

Annotation, AnnotatedElement, AnnotationSupport

Method Summary

Modifier and Type	Method and Description
static List<Field>	findAnnotatedFields(Class<?> clazz, Class<? extends Annotation> annotationType, Predicate<Field> predicate) Find all fields of the supplied class or interface that are annotated or meta-annotated with the specified annotationType and match the specified predicate, using top-down search semantics within the type hierarchy.
static List<Field>	findAnnotatedFields(Class<?> clazz, Class<? extends Annotation> annotationType, Predicate<Field> predicate, ReflectionUtils.HierarchyTraversalMode traversalMode) Find all fields of the supplied class or interface that are annotated or meta-annotated with the specified annotationType and match the specified predicate.
static List<Method>	findAnnotatedMethods(Class<?> clazz, Class<? extends Annotation> annotationType, ReflectionUtils.HierarchyTraversalMode traversalMode)
static <A extends Annotation> Optional<A>	findAnnotation(AnnotatedElement element, Class<A> annotationType)
static <A extends Annotation> Optional<A>	findAnnotation(Optional<? extends AnnotatedElement> element, Class<A> annotationType)
static List<Field>	findPublicAnnotatedFields(Class<?> clazz, Class<?> fieldType, Class<? extends Annotation> annotationType)
static <A extends Annotation> List<A>	findRepeatableAnnotations(AnnotatedElement element, Class<A> annotationType)
static boolean	isAnnotated(AnnotatedElement element, Class<? extends Annotation> annotationType) Determine if an annotation of annotationType is either present or meta-present on the supplied element.
static boolean	isAnnotated(Optional<? extends AnnotatedElement> element, Class<? extends Annotation> annotationType) Determine if an annotation of annotationType is either present or meta-present on the supplied optional element.

Methods inherited from class java.lang.Object

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

Method Detail

isAnnotated

public static boolean isAnnotated(Optional<? extends AnnotatedElement> element,
                                  Class<? extends Annotation> annotationType)

Determine if an annotation of annotationType is either present or meta-present on the supplied optional element.

See Also:

findAnnotation(Optional, Class), AnnotationSupport.isAnnotated(Optional, Class)

isAnnotated

public static boolean isAnnotated(AnnotatedElement element,
                                  Class<? extends Annotation> annotationType)

Determine if an annotation of annotationType is either present or meta-present on the supplied element.

Parameters:

element - the element on which to search for the annotation; may be null

annotationType - the annotation type to search for; never null

Returns:

true if the annotation is present or meta-present

See Also:

findAnnotation(AnnotatedElement, Class), AnnotationSupport.isAnnotated(AnnotatedElement, Class)

findAnnotation

public static <A extends Annotation> Optional<A> findAnnotation(Optional<? extends AnnotatedElement> element,
                                                                Class<A> annotationType)

See Also:

AnnotationSupport.findAnnotation(Optional, Class)

findAnnotation

public static <A extends Annotation> Optional<A> findAnnotation(AnnotatedElement element,
                                                                Class<A> annotationType)

See Also:

AnnotationSupport.findAnnotation(AnnotatedElement, Class)

findRepeatableAnnotations

public static <A extends Annotation> List<A> findRepeatableAnnotations(AnnotatedElement element,
                                                                       Class<A> annotationType)

See Also:

AnnotationSupport.findRepeatableAnnotations(AnnotatedElement, Class)

findPublicAnnotatedFields

public static List<Field> findPublicAnnotatedFields(Class<?> clazz,
                                                    Class<?> fieldType,
                                                    Class<? extends Annotation> annotationType)

See Also:

AnnotationSupport.findPublicAnnotatedFields(Class, Class, Class)

findAnnotatedFields

public static List<Field> findAnnotatedFields(Class<?> clazz,
                                              Class<? extends Annotation> annotationType,
                                              Predicate<Field> predicate)

Find all fields of the supplied class or interface that are annotated or meta-annotated with the specified annotationType and match the specified predicate, using top-down search semantics within the type hierarchy.

See Also:

#findAnnotatedFields(Class, Class, Predicate, HierarchyTraversalMode)

findAnnotatedFields

public static List<Field> findAnnotatedFields(Class<?> clazz,
                                              Class<? extends Annotation> annotationType,
                                              Predicate<Field> predicate,
                                              ReflectionUtils.HierarchyTraversalMode traversalMode)

Find all fields of the supplied class or interface that are annotated or meta-annotated with the specified annotationType and match the specified predicate.

Parameters:

clazz - the class or interface in which to find the fields; never null

annotationType - the annotation type to search for; never null

predicate - the field filter; never null

traversalMode - the hierarchy traversal mode; never null

Returns:

the list of all such fields found; neither null nor mutable

findAnnotatedMethods

public static List<Method> findAnnotatedMethods(Class<?> clazz,
                                                Class<? extends Annotation> annotationType,
                                                ReflectionUtils.HierarchyTraversalMode traversalMode)

See Also:

AnnotationSupport.findAnnotatedMethods(Class, Class, org.junit.platform.commons.support.HierarchyTraversalMode)