Class AnnotationUtils



  • @API(status=INTERNAL,
         since="1.0")
    public final class AnnotationUtils
    extends java.lang.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

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static java.util.List<java.lang.reflect.Field> findAnnotatedFields​(java.lang.Class<?> clazz, java.lang.Class<? extends java.lang.annotation.Annotation> annotationType, java.util.function.Predicate<java.lang.reflect.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 java.util.List<java.lang.reflect.Field> findAnnotatedFields​(java.lang.Class<?> clazz, java.lang.Class<? extends java.lang.annotation.Annotation> annotationType, java.util.function.Predicate<java.lang.reflect.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 java.util.List<java.lang.reflect.Method> findAnnotatedMethods​(java.lang.Class<?> clazz, java.lang.Class<? extends java.lang.annotation.Annotation> annotationType, ReflectionUtils.HierarchyTraversalMode traversalMode)  
      static <A extends java.lang.annotation.Annotation>
      java.util.Optional<A>
      findAnnotation​(java.lang.reflect.AnnotatedElement element, java.lang.Class<A> annotationType)  
      static <A extends java.lang.annotation.Annotation>
      java.util.Optional<A>
      findAnnotation​(java.util.Optional<? extends java.lang.reflect.AnnotatedElement> element, java.lang.Class<A> annotationType)  
      static java.util.List<java.lang.reflect.Field> findPublicAnnotatedFields​(java.lang.Class<?> clazz, java.lang.Class<?> fieldType, java.lang.Class<? extends java.lang.annotation.Annotation> annotationType)  
      static <A extends java.lang.annotation.Annotation>
      java.util.List<A>
      findRepeatableAnnotations​(java.lang.reflect.AnnotatedElement element, java.lang.Class<A> annotationType)  
      static boolean isAnnotated​(java.lang.reflect.AnnotatedElement element, java.lang.Class<? extends java.lang.annotation.Annotation> annotationType)
      Determine if an annotation of annotationType is either present or meta-present on the supplied element.
      static boolean isAnnotated​(java.util.Optional<? extends java.lang.reflect.AnnotatedElement> element, java.lang.Class<? extends java.lang.annotation.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​(java.util.Optional<? extends java.lang.reflect.AnnotatedElement> element,
                                          java.lang.Class<? extends java.lang.annotation.Annotation> annotationType)
        Determine if an annotation of annotationType is either present or meta-present on the supplied optional element.
        See Also:
        findAnnotation(Optional, Class)
      • findAnnotation

        public static <A extends java.lang.annotation.Annotation> java.util.Optional<A> findAnnotation​(java.util.Optional<? extends java.lang.reflect.AnnotatedElement> element,
                                                                                                       java.lang.Class<A> annotationType)
        See Also:
        AnnotationSupport.findAnnotation(Optional, Class)
      • findPublicAnnotatedFields

        public static java.util.List<java.lang.reflect.Field> findPublicAnnotatedFields​(java.lang.Class<?> clazz,
                                                                                        java.lang.Class<?> fieldType,
                                                                                        java.lang.Class<? extends java.lang.annotation.Annotation> annotationType)
        See Also:
        AnnotationSupport.findPublicAnnotatedFields(Class, Class, Class)
      • findAnnotatedFields

        public static java.util.List<java.lang.reflect.Field> findAnnotatedFields​(java.lang.Class<?> clazz,
                                                                                  java.lang.Class<? extends java.lang.annotation.Annotation> annotationType,
                                                                                  java.util.function.Predicate<java.lang.reflect.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 java.util.List<java.lang.reflect.Field> findAnnotatedFields​(java.lang.Class<?> clazz,
                                                                                  java.lang.Class<? extends java.lang.annotation.Annotation> annotationType,
                                                                                  java.util.function.Predicate<java.lang.reflect.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