Returns true if the given constructor has an "@Inject" annotation - Java java.lang.annotation

Java examples for java.lang.annotation:Constructor Annotation

  1. HOME
  2. Java
  3. java.lang.annotation
  4. Constructor Annotation

Description

Returns true if the given constructor has an "@Inject" annotation

Demo Code

/**//from ww w.  j  av  a 2 s .  c  o m
 *  Copyright (C) 2013-2016 Laurent GUERIN - NanoJ project org. ( http://www.nanoj.org/ )
 *
 *  Licensed under the GNU LESSER GENERAL PUBLIC LICENSE, Version 3.0 (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.gnu.org/licenses/lgpl.html
 *
 *  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.Constructor;
import java.lang.reflect.Field;

public class Main{
    /**
     * Returns true if the given constructor has an "@Inject" annotation
     * @param constructor
     * @return
     */
    static boolean hasInjectAnnotation(Constructor<?> constructor) {
        Annotation[] annotations = constructor.getDeclaredAnnotations();
        for (Annotation a : annotations) {
            if (AnnotationUtil.isInject(a)) {
                return true;
            }
        }
        return false;
    }
    /**
     * Returns true if the given field has an "@Inject" annotation
     * @param field
     * @return
     */
    static boolean hasInjectAnnotation(Field field) {
        Annotation[] annotations = field.getDeclaredAnnotations();
        for (Annotation a : annotations) {
            if (AnnotationUtil.isInject(a)) {
                return true;
            }
        }
        return false;
    }
    /**
     * Returns true if the given annotation can be considered as a "@Inject" annotation
     * @param annotation
     * @return
     */
    static boolean isInject(Annotation annotation) {
        return annotation.annotationType().getCanonicalName()
                .endsWith(".Inject");
    }
}

Related Tutorials