java.lang.Object
- org.springframework.core.annotation.MergedAnnotationCollectors

```
public abstract class MergedAnnotationCollectors
extends Object
```
Collector implementations that provide various reduction operations for MergedAnnotation instances.
Since:
5.2
Author:
Phillip Webb, Sam Brannen

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`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(Function<MultiValueMap<String,Object>,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.
`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.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - 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.
    Type Parameters:
    A - the annotation type
    Returns:
    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.
    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 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.
    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 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.
    Type Parameters:
    A - the annotation type
    Parameters:
    adaptations - the 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 Annotation> Collector<MergedAnnotation<A>,?,MultiValueMap<String,Object>> toMultiValueMap(Function<MultiValueMap<String,Object>,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.
    Type Parameters:
    A - the annotation type
    Parameters:
    finisher - the finisher function for the new MultiValueMap
    adaptations - the adaptations that should be applied to the annotation values
    Returns:
    a Collector which collects and synthesizes the annotations into a LinkedMultiValueMap
    See Also:
    toMultiValueMap(MergedAnnotation.Adapt...)

Class MergedAnnotationCollectors

Method Summary

Methods inherited from class java.lang.Object

Method Detail

toAnnotationSet

toAnnotationArray

toAnnotationArray

toMultiValueMap

toMultiValueMap