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.util.ArrayList; 020import java.util.List; 021 022import org.springframework.context.annotation.Condition; 023import org.springframework.core.Ordered; 024import org.springframework.core.annotation.Order; 025 026/** 027 * {@link Condition} that will match when any nested class condition matches. Can be used 028 * to create composite conditions, for example: 029 * 030 * <pre class="code"> 031 * static class OnJndiOrProperty extends AnyNestedCondition { 032 * 033 * OnJndiOrProperty() { 034 * super(ConfigurationPhase.PARSE_CONFIGURATION); 035 * } 036 * 037 * @ConditionalOnJndi() 038 * static class OnJndi { 039 * } 040 * 041 * @ConditionalOnProperty("something") 042 * static class OnProperty { 043 * } 044 * 045 * } 046 * </pre> 047 * <p> 048 * The 049 * {@link org.springframework.context.annotation.ConfigurationCondition.ConfigurationPhase 050 * ConfigurationPhase} should be specified according to the conditions that are defined. 051 * In the example above, all conditions are static and can be evaluated early so 052 * {@code PARSE_CONFIGURATION} is a right fit. 053 * 054 * @author Phillip Webb 055 * @since 1.2.0 056 */ 057@Order(Ordered.LOWEST_PRECEDENCE - 20) 058public abstract class AnyNestedCondition extends AbstractNestedCondition { 059 060 public AnyNestedCondition(ConfigurationPhase configurationPhase) { 061 super(configurationPhase); 062 } 063 064 @Override 065 protected ConditionOutcome getFinalMatchOutcome(MemberMatchOutcomes memberOutcomes) { 066 boolean match = !memberOutcomes.getMatches().isEmpty(); 067 List<ConditionMessage> messages = new ArrayList<>(); 068 messages.add(ConditionMessage.forCondition("AnyNestedCondition") 069 .because(memberOutcomes.getMatches().size() + " matched " 070 + memberOutcomes.getNonMatches().size() + " did not")); 071 for (ConditionOutcome outcome : memberOutcomes.getAll()) { 072 messages.add(outcome.getConditionMessage()); 073 } 074 return new ConditionOutcome(match, ConditionMessage.of(messages)); 075 } 076 077}