001/* 002 * Copyright 2002-2009 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 org.springframework.beans.factory.config.AutowireCapableBeanFactory; 020 021/** 022 * Enumeration determining autowiring status: that is, whether a bean should 023 * have its dependencies automatically injected by the Spring container using 024 * setter injection. This is a core concept in Spring DI. 025 * 026 * <p>Available for use in annotation-based configurations, such as for the 027 * AspectJ AnnotationBeanConfigurer aspect. 028 * 029 * @author Rod Johnson 030 * @author Juergen Hoeller 031 * @since 2.0 032 * @see org.springframework.beans.factory.annotation.Configurable 033 * @see org.springframework.beans.factory.config.AutowireCapableBeanFactory 034 */ 035public enum Autowire { 036 037 /** 038 * Constant that indicates no autowiring at all. 039 */ 040 NO(AutowireCapableBeanFactory.AUTOWIRE_NO), 041 042 /** 043 * Constant that indicates autowiring bean properties by name. 044 */ 045 BY_NAME(AutowireCapableBeanFactory.AUTOWIRE_BY_NAME), 046 047 /** 048 * Constant that indicates autowiring bean properties by type. 049 */ 050 BY_TYPE(AutowireCapableBeanFactory.AUTOWIRE_BY_TYPE); 051 052 053 private final int value; 054 055 056 Autowire(int value) { 057 this.value = value; 058 } 059 060 public int value() { 061 return this.value; 062 } 063 064 /** 065 * Return whether this represents an actual autowiring value. 066 * @return whether actual autowiring was specified 067 * (either BY_NAME or BY_TYPE) 068 */ 069 public boolean isAutowire() { 070 return (this == BY_NAME || this == BY_TYPE); 071 } 072 073}