Java Reflection Annotation getAnnotation(AnnotatedElement target, String annotationType)

Description

get Annotation

License

Apache License

Declaration

private static Annotation getAnnotation(AnnotatedElement target, String annotationType) 

Method Source Code

//package com.java2s;
/*/*from   www. ja  va  2  s .  co  m*/
 * Copyright (c) 2010-2016. Axon Framework
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.lang.annotation.Annotation;
import java.lang.reflect.AnnotatedElement;

import java.util.*;

public class Main {
    private static Annotation getAnnotation(AnnotatedElement target, String annotationType) {
        for (Annotation annotation : target.getAnnotations()) {
            if (annotationType.equals(annotation.annotationType().getName())) {
                return annotation;
            }
        }
        return null;
    }

    private static Annotation getAnnotation(Class<? extends Annotation> target, String annotationType,
            Set<String> visited) {
        Annotation ann = getAnnotation(target, annotationType);
        if (ann == null && visited.add(target.getName())) {
            for (Annotation metaAnn : target.getAnnotations()) {
                ann = getAnnotation(metaAnn.annotationType(), annotationType, visited);
                if (ann != null) {
                    break;
                }
            }
        }
        return ann;
    }
}

Related

1. getAnnotation(@Nonnull Class cls, @Nonnull Class annotation)
2. getAnnotation(AnnotatedElement ae, Class annotationType)
3. getAnnotation(AnnotatedElement aobj, Class aClass)
4. getAnnotation(AnnotatedElement element, Class annotation)
5. getAnnotation(AnnotatedElement element, String annotationTypeName)
6. getAnnotation(Annotation ann, Class annotationType)
7. getAnnotation(Annotation[] annotaions, Class T)
8. getAnnotation(Annotation[] annotations, Class annotationType)
9. getAnnotation(Annotation[] annotations, Class annotationClazz)