程序包 cn.taketoday.core.annotation

类 MergedAnnotationCollectors

java.lang.Object

cn.taketoday.core.annotation.MergedAnnotationCollectors

public abstract class MergedAnnotationCollectors
extends Object

Collector implementations that provide various reduction operations for MergedAnnotation instances.

从以下版本开始:

4.0

作者:

Phillip Webb, Sam Brannen

字段概要

字段

修饰符和类型	字段	说明
private static final Collector.Characteristics[]	IDENTITY_FINISH_CHARACTERISTICS
private static final Collector.Characteristics[]	NO_CHARACTERISTICS

构造器概要

构造器

构造器	说明
MergedAnnotationCollectors()

方法概要

修饰符和类型	方法	说明
private static <K, V> MultiValueMap<K,V>	combiner(MultiValueMap<K,V> map, MultiValueMap<K,V> additions)	Combiner for multi-value maps.
private static <E, C extends Collection<E>> C	combiner(C collection, C additions)	Combiner for collections.
private static boolean	isSameInstance(Object instance, Object candidate)
static <A extends Annotation> Collector<MergedAnnotation<A>,?,Annotation[]>	toAnnotationArray()	Create a new Collector that accumulates merged annotations to an Annotation array containing synthesized versions.
static <R extends Annotation, A extends R> Collector<MergedAnnotation<A>,?,R[]>	toAnnotationArray(IntFunction<R[]> generator)	Create a new Collector that accumulates merged annotations to an Annotation array containing synthesized versions.
static <A extends Annotation> Collector<MergedAnnotation<A>,?,Set<A>>	toAnnotationSet()	Create a new Collector that accumulates merged annotations to a LinkedHashSet containing synthesized versions.
static <A extends Annotation> Collector<MergedAnnotation<A>,?,MultiValueMap<String,Object>>	toMultiValueMap(MergedAnnotation.Adapt... adaptations)	Create a new Collector that accumulates merged annotations to a MultiValueMap with items added from each merged annotation as a map.
static <A extends Annotation> Collector<MergedAnnotation<A>,?,MultiValueMap<String,Object>>	toMultiValueMap(UnaryOperator<MultiValueMap<String,Object>> finisher, MergedAnnotation.Adapt... adaptations)	Create a new Collector that accumulates merged annotations to a MultiValueMap with items added from each merged annotation as a map.

从类继承的方法 java.lang.Object

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

字段详细资料

NO_CHARACTERISTICS

private static final Collector.Characteristics[] NO_CHARACTERISTICS

IDENTITY_FINISH_CHARACTERISTICS

private static final Collector.Characteristics[] IDENTITY_FINISH_CHARACTERISTICS

构造器详细资料

MergedAnnotationCollectors

public MergedAnnotationCollectors()

方法详细资料

toAnnotationSet

public static <A extends Annotation>
Collector<MergedAnnotation<A>,?,Set<A>> toAnnotationSet()

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

The collector returned by this method is effectively equivalent to Collectors.mapping(MergedAnnotation::synthesize, Collectors.toCollection(LinkedHashSet::new)) but avoids the creation of a composite collector.

类型参数:

A - the annotation type

返回:

a Collector which collects and synthesizes the annotations into a Set

toAnnotationArray

public static <A extends Annotation>
Collector<MergedAnnotation<A>,?,Annotation[]> toAnnotationArray()

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

类型参数:

A - the annotation type

返回:

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

另请参阅:

• toAnnotationArray(IntFunction)

toAnnotationArray

public static <R extends Annotation,
A extends R>
Collector<MergedAnnotation<A>,?,R[]> toAnnotationArray(IntFunction<R[]> generator)

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

类型参数:

A - the annotation type

R - the resulting array type

参数:

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

返回:

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

另请参阅:

• toAnnotationArray()

toMultiValueMap

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

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

类型参数:

A - the annotation type

参数:

adaptations - the adaptations that should be applied to the annotation values

返回:

a Collector which collects and synthesizes the annotations into a DefaultMultiValueMap

另请参阅:

• toMultiValueMap(UnaryOperator, Adapt...)

toMultiValueMap

public static <A extends Annotation>
Collector<MergedAnnotation<A>,?,MultiValueMap<String,Object>> toMultiValueMap(UnaryOperator<MultiValueMap<String,Object>> finisher,
 MergedAnnotation.Adapt... adaptations)

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

类型参数:

A - the annotation type

参数:

finisher - the finisher function for the new MultiValueMap

adaptations - the adaptations that should be applied to the annotation values

返回:

a Collector which collects and synthesizes the annotations into a DefaultMultiValueMap

另请参阅:

• toMultiValueMap(Adapt...)

isSameInstance

private static boolean isSameInstance(Object instance,
 Object candidate)

combiner

private static <E,
C extends Collection<E>> C combiner(C collection,
 C additions)

Combiner for collections.

This method is only invoked if the Stream is processed in parallel.

combiner

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

Combiner for multi-value maps.

This method is only invoked if the Stream is processed in parallel.