001/*
002 * Copyright 2012-2018 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.orm.jpa;
018
019import java.util.Arrays;
020
021import javax.persistence.EntityManager;
022
023import org.springframework.boot.autoconfigure.AutoConfigureAfter;
024import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
025import org.springframework.boot.autoconfigure.condition.ConditionMessage;
026import org.springframework.boot.autoconfigure.condition.ConditionMessage.Style;
027import org.springframework.boot.autoconfigure.condition.ConditionOutcome;
028import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
029import org.springframework.boot.autoconfigure.condition.SpringBootCondition;
030import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
031import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration.HibernateEntityManagerCondition;
032import org.springframework.boot.context.properties.EnableConfigurationProperties;
033import org.springframework.context.annotation.ConditionContext;
034import org.springframework.context.annotation.Conditional;
035import org.springframework.context.annotation.Configuration;
036import org.springframework.context.annotation.Import;
037import org.springframework.core.Ordered;
038import org.springframework.core.annotation.Order;
039import org.springframework.core.type.AnnotatedTypeMetadata;
040import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
041import org.springframework.util.ClassUtils;
042
043/**
044 * {@link EnableAutoConfiguration Auto-configuration} for Hibernate JPA.
045 *
046 * @author Phillip Webb
047 * @author Josh Long
048 * @author Manuel Doninger
049 * @author Andy Wilkinson
050 */
051@Configuration
052@ConditionalOnClass({ LocalContainerEntityManagerFactoryBean.class, EntityManager.class })
053@Conditional(HibernateEntityManagerCondition.class)
054@EnableConfigurationProperties(JpaProperties.class)
055@AutoConfigureAfter({ DataSourceAutoConfiguration.class })
056@Import(HibernateJpaConfiguration.class)
057public class HibernateJpaAutoConfiguration {
058
059        @Order(Ordered.HIGHEST_PRECEDENCE + 20)
060        static class HibernateEntityManagerCondition extends SpringBootCondition {
061
062                private static final String[] CLASS_NAMES = {
063                                "org.hibernate.ejb.HibernateEntityManager",
064                                "org.hibernate.jpa.HibernateEntityManager" };
065
066                @Override
067                public ConditionOutcome getMatchOutcome(ConditionContext context,
068                                AnnotatedTypeMetadata metadata) {
069                        ConditionMessage.Builder message = ConditionMessage
070                                        .forCondition("HibernateEntityManager");
071                        for (String className : CLASS_NAMES) {
072                                if (ClassUtils.isPresent(className, context.getClassLoader())) {
073                                        return ConditionOutcome
074                                                        .match(message.found("class").items(Style.QUOTE, className));
075                                }
076                        }
077                        return ConditionOutcome.noMatch(message.didNotFind("class", "classes")
078                                        .items(Style.QUOTE, Arrays.asList(CLASS_NAMES)));
079                }
080
081        }
082
083}