org.springframework.core.annotation

Class MergedAnnotationCollectors

java.lang.Object

org.springframework.core.annotation.MergedAnnotationCollectors

public abstract class MergedAnnotationCollectors
extends java.lang.Object

Collector implementations that provide various reduction operations for MergedAnnotation instances.

Since:

5.2

Author:

Phillip Webb

Field Summary

Fields

Modifier and Type	Field and Description
private static java.util.stream.Collector.Characteristics[]	IDENTITY_FINISH_CHARACTERISTICS
private static java.util.stream.Collector.Characteristics[]	NO_CHARACTERISTICS

Constructor Summary

Constructors

Modifier	Constructor and Description
private	MergedAnnotationCollectors()

Method Summary

Modifier and Type	Method and Description
private static <E,L extends java.util.List<E>> L	addAll(L list, L additions)
private static boolean	isSameInstance(java.lang.Object instance, java.lang.Object candidate)
private static <K,V> MultiValueMap<K,V>	merge(MultiValueMap<K,V> map, MultiValueMap<K,V> additions)
static <A extends java.lang.annotation.Annotation> java.util.stream.Collector<MergedAnnotation<A>,?,java.lang.annotation.Annotation[]>	toAnnotationArray() Create a new Collector that accumulates merged annotations to an Annotation array containing synthesized versions.
static <R extends java.lang.annotation.Annotation,A extends R> java.util.stream.Collector<MergedAnnotation<A>,?,R[]>	toAnnotationArray(java.util.function.IntFunction<R[]> generator) Create a new Collector that accumulates merged annotations to an Annotation array containing synthesized versions.
static <A extends java.lang.annotation.Annotation> java.util.stream.Collector<MergedAnnotation<A>,?,java.util.Set<A>>	toAnnotationSet() Create a new Collector that accumulates merged annotations to a LinkedHashSet containing synthesized versions.
static <A extends java.lang.annotation.Annotation> java.util.stream.Collector<MergedAnnotation<A>,?,MultiValueMap<java.lang.String,java.lang.Object>>	toMultiValueMap(java.util.function.Function<MultiValueMap<java.lang.String,java.lang.Object>,MultiValueMap<java.lang.String,java.lang.Object>> finisher, MergedAnnotation.Adapt... adaptations) Create a new Collector that accumulates merged annotations to an MultiValueMap with items added from each merged annotation as a map.
static <A extends java.lang.annotation.Annotation> java.util.stream.Collector<MergedAnnotation<A>,?,MultiValueMap<java.lang.String,java.lang.Object>>	toMultiValueMap(MergedAnnotation.Adapt... adaptations) Create a new Collector that accumulates merged annotations to an MultiValueMap with items added from each merged annotation as a map.

Methods inherited from class java.lang.Object

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

Field Detail

NO_CHARACTERISTICS

private static final java.util.stream.Collector.Characteristics[] NO_CHARACTERISTICS

IDENTITY_FINISH_CHARACTERISTICS

private static final java.util.stream.Collector.Characteristics[] IDENTITY_FINISH_CHARACTERISTICS

Constructor Detail

MergedAnnotationCollectors

private MergedAnnotationCollectors()

Method Detail

toAnnotationSet

public static <A extends java.lang.annotation.Annotation> java.util.stream.Collector<MergedAnnotation<A>,?,java.util.Set<A>> toAnnotationSet()

Create a new Collector that accumulates merged annotations to a LinkedHashSet containing synthesized versions.

Type Parameters:

A - the annotation type

Returns:

a Collector which collects and synthesizes the annotations into a Set

toAnnotationArray

public static <A extends java.lang.annotation.Annotation> java.util.stream.Collector<MergedAnnotation<A>,?,java.lang.annotation.Annotation[]> toAnnotationArray()

Create a new Collector that accumulates merged annotations to an Annotation array containing synthesized versions.

Type Parameters:

A - the annotation type

Returns:

a Collector which collects and synthesizes the annotations into an Annotation[]

See Also:

toAnnotationArray(IntFunction)

toAnnotationArray

public static <R extends java.lang.annotation.Annotation,A extends R> java.util.stream.Collector<MergedAnnotation<A>,?,R[]> toAnnotationArray(java.util.function.IntFunction<R[]> generator)

Create a new Collector that accumulates merged annotations to an Annotation array containing synthesized versions.

Type Parameters:

A - the annotation type

R - the resulting array type

Parameters:

generator - a function which produces a new array of the desired type and the provided length

Returns:

a Collector which collects and synthesizes the annotations into an annotation array

See Also:

toAnnotationArray()

toMultiValueMap

public static <A extends java.lang.annotation.Annotation> java.util.stream.Collector<MergedAnnotation<A>,?,MultiValueMap<java.lang.String,java.lang.Object>> toMultiValueMap(MergedAnnotation.Adapt... adaptations)

Create a new Collector that accumulates merged annotations to an MultiValueMap with items added from each merged annotation as a map.

Type Parameters:

A - the annotation type

Parameters:

adaptations - adaptations that should be applied to the annotation values

Returns:

a Collector which collects and synthesizes the annotations into a LinkedMultiValueMap

See Also:

toMultiValueMap(Function, MergedAnnotation.Adapt...)

toMultiValueMap

public static <A extends java.lang.annotation.Annotation> java.util.stream.Collector<MergedAnnotation<A>,?,MultiValueMap<java.lang.String,java.lang.Object>> toMultiValueMap(java.util.function.Function<MultiValueMap<java.lang.String,java.lang.Object>,MultiValueMap<java.lang.String,java.lang.Object>> finisher,
                                                                                                                                                                             MergedAnnotation.Adapt... adaptations)

Create a new Collector that accumulates merged annotations to an MultiValueMap with items added from each merged annotation as a map.

Type Parameters:

A - the annotation type

Parameters:

adaptations - adaptations that should be applied to the annotation values

finisher - the finisher function for the new MultiValueMap

Returns:

a Collector which collects and synthesizes the annotations into a LinkedMultiValueMap

See Also:

toMultiValueMap(MergedAnnotation.Adapt...)

isSameInstance

private static boolean isSameInstance(java.lang.Object instance,
                                      java.lang.Object candidate)

addAll

private static <E,L extends java.util.List<E>> L addAll(L list,
                                                        L additions)

merge

private static <K,V> MultiValueMap<K,V> merge(MultiValueMap<K,V> map,
                                              MultiValueMap<K,V> additions)