io.neba.core.util

Class Annotations

java.lang.Object

io.neba.core.util.Annotations

All Implemented Interfaces:

Iterable<Annotation>

public class Annotations
extends Object
implements Iterable<Annotation>

Supports meta-annotations by looking up annotations in the transitive hull (annotations and their annotations, called meta-annotations) of a given AnnotatedElement.

Author:

Olaf Otto

Method Summary

Modifier and Type	Method and Description
static Annotations	annotations(AnnotatedElement annotatedElement)
boolean	contains(Class<? extends Annotation> type)
boolean	containsName(String name)
<T extends Annotation> T	get(Class<T> type)
Map<Class<? extends Annotation>,Annotation>	getAnnotations()
Iterator<Annotation>	iterator()
Stream<Annotation>	stream()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Method Detail

annotations

public static Annotations annotations(AnnotatedElement annotatedElement)

Parameters:

annotatedElement - must not be null

Returns:

never null.

contains

public boolean contains(Class<? extends Annotation> type)

Parameters:

type - must not be null.

Returns:

whether the given element or any of its meta-annotations is annotated with the given annotation type.

containsName

public boolean containsName(String name)

Parameters:

name - must not be null.

Returns:

whether the given type name matches one of the present annotations

get

public <T extends Annotation> T get(Class<T> type)

Parameters:

type - must not be null.

Returns:

the annotation if present on the given element or any meta-annotation thereof, or null.

stream

public Stream<Annotation> stream()

Returns:

never null.

iterator

@Nonnull
public Iterator<Annotation> iterator()

Specified by:

iterator in interface Iterable<Annotation>

getAnnotations

public Map<Class<? extends Annotation>,Annotation> getAnnotations()