001/* 002 * Copyright 2012-2017 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 * http://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.boot.autoconfigure.condition; 018 019import java.lang.annotation.Documented; 020import java.lang.annotation.ElementType; 021import java.lang.annotation.Retention; 022import java.lang.annotation.RetentionPolicy; 023import java.lang.annotation.Target; 024 025import org.springframework.boot.system.JavaVersion; 026import org.springframework.context.annotation.Conditional; 027 028/** 029 * {@link Conditional} that matches based on the JVM version the application is running 030 * on. 031 * 032 * @author Oliver Gierke 033 * @author Phillip Webb 034 * @author Andy Wilkinson 035 * @since 1.1.0 036 */ 037@Target({ ElementType.TYPE, ElementType.METHOD }) 038@Retention(RetentionPolicy.RUNTIME) 039@Documented 040@Conditional(OnJavaCondition.class) 041public @interface ConditionalOnJava { 042 043 /** 044 * Configures whether the value configured in {@link #value()} shall be considered the 045 * upper exclusive or lower inclusive boundary. Defaults to 046 * {@link Range#EQUAL_OR_NEWER}. 047 * @return the range 048 */ 049 Range range() default Range.EQUAL_OR_NEWER; 050 051 /** 052 * The {@link JavaVersion} to check for. Use {@link #range()} to specify whether the 053 * configured value is an upper-exclusive or lower-inclusive boundary. 054 * @return the java version 055 */ 056 JavaVersion value(); 057 058 /** 059 * Range options. 060 */ 061 enum Range { 062 063 /** 064 * Equal to, or newer than the specified {@link JavaVersion}. 065 */ 066 EQUAL_OR_NEWER, 067 068 /** 069 * Older than the specified {@link JavaVersion}. 070 */ 071 OLDER_THAN 072 073 } 074 075}