001/*
002 * Copyright 2002-2012 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.beans.factory.annotation;
018
019import java.lang.annotation.ElementType;
020import java.lang.annotation.Retention;
021import java.lang.annotation.RetentionPolicy;
022import java.lang.annotation.Target;
023
024/**
025 * Marks a method (typically a JavaBean setter method) as being 'required': that is,
026 * the setter method must be configured to be dependency-injected with a value.
027 *
028 * <p>Please do consult the javadoc for the {@link RequiredAnnotationBeanPostProcessor}
029 * class (which, by default, checks for the presence of this annotation).
030 *
031 * @author Rob Harrop
032 * @since 2.0
033 * @see RequiredAnnotationBeanPostProcessor
034 */
035@Retention(RetentionPolicy.RUNTIME)
036@Target(ElementType.METHOD)
037public @interface Required {
038
039}