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

Constructor Summary

Constructors

Constructor and Description
Annotations(AnnotatedElement annotatedElement)

Method Summary

Methods

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Annotations

public Annotations(AnnotatedElement annotatedElement)

Parameters:

annotatedElement - must not be null.

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.

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.

iterator

public Iterator<Annotation> iterator()

Specified by:

iterator in interface Iterable<Annotation>

getAnnotations

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