/*
 * Copyright 2012-2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.boot.autoconfigure.orm.jpa;

import java.util.Map;

import javax.persistence.EntityManager;
import javax.sql.DataSource;

import org.hibernate.jpa.HibernateEntityManager;
import org.springframework.beans.factory.BeanClassLoaderAware;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.jdbc.EmbeddedDatabaseConnection;
import org.springframework.boot.bind.RelaxedPropertyResolver;
import org.springframework.boot.orm.jpa.SpringNamingStrategy;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.AbstractJpaVendorAdapter;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.annotation.EnableTransactionManagement;

/**
 * {@link EnableAutoConfiguration Auto-configuration} for Hibernate JPA.
 * 
 * @author Phillip Webb
 */
@Configuration
@ConditionalOnClass({ LocalContainerEntityManagerFactoryBean.class,
		EnableTransactionManagement.class, EntityManager.class,
		HibernateEntityManager.class })
@ConditionalOnBean(DataSource.class)
@AutoConfigureAfter(DataSourceAutoConfiguration.class)
public class HibernateJpaAutoConfiguration extends JpaBaseConfiguration implements
		BeanClassLoaderAware {

	private RelaxedPropertyResolver environment;

	private ClassLoader classLoader;

	public HibernateJpaAutoConfiguration() {
		this.environment = null;
	}

	@Override
	public void setBeanClassLoader(ClassLoader classLoader) {
		this.classLoader = classLoader;
	}

	@Override
	public void setEnvironment(Environment environment) {
		super.setEnvironment(environment);
		this.environment = new RelaxedPropertyResolver(environment,
				"spring.jpa.hibernate.");
	}

	@Override
	protected AbstractJpaVendorAdapter createJpaVendorAdapter() {
		return new HibernateJpaVendorAdapter();
	}

	@Override
	protected void configure(
			LocalContainerEntityManagerFactoryBean entityManagerFactoryBean) {
		Map<String, Object> properties = entityManagerFactoryBean.getJpaPropertyMap();
		properties.put("hibernate.ejb.naming_strategy", this.environment.getProperty(
				"naming-strategy", SpringNamingStrategy.class.getName()));
		String ddlAuto = this.environment.getProperty("ddl-auto", getDefaultDdlAuto());
		if (!"none".equals(ddlAuto)) {
			properties.put("hibernate.hbm2ddl.auto", ddlAuto);
		}
	}

	private String getDefaultDdlAuto() {
		EmbeddedDatabaseConnection embeddedDatabaseConnection = EmbeddedDatabaseConnection
				.get(this.classLoader);
		if (embeddedDatabaseConnection == EmbeddedDatabaseConnection.NONE) {
			return "none";
		}
		return "create-drop";
	}
}

@@ -769,57 +769,8 @@
 e;%0A%0A
-import org.hibernate.jpa.HibernateEntityManager;%0A
 impo
@@ -828,16 +828,16 @@
 rAware;%0A
+
 import o
@@ -957,32 +957,106 @@
 oConfiguration;%0A
+import org.springframework.boot.autoconfigure.condition.ConditionOutcome;%0A
 import org.sprin
@@ -1190,16 +1190,93 @@
 nClass;%0A
+import org.springframework.boot.autoconfigure.condition.SpringBootCondition;%0A
 import o
@@ -1422,24 +1422,141 @@
 Connection;%0A
+import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration.HibernateEntityManagerCondition;%0A
 import org.s
@@ -1667,16 +1667,139 @@
 rategy;%0A
+import org.springframework.context.annotation.ConditionContext;%0Aimport org.springframework.context.annotation.Conditional;%0A
 import o
@@ -1900,16 +1900,76 @@
 onment;%0A
+import org.springframework.core.type.AnnotatedTypeMetadata;%0A
 import o
@@ -2250,16 +2250,60 @@
 agement;
+%0Aimport org.springframework.util.ClassUtils;
 %0A%0A/**%0A *
@@ -2544,20 +2544,33 @@
 er.class
-,%0A%09%09
+ %7D)%0A@Conditional(
 Hibernat
@@ -2579,32 +2579,39 @@
 ntityManager
+Condition
 .class
- %7D
 )%0A@Condition
@@ -4160,13 +4160,595 @@
 -drop%22;%0A
-
 %09%7D%0A
+%0A%09public static class HibernateEntityManagerCondition extends SpringBootCondition %7B%0A%0A%09%09@Override%0A%09%09public ConditionOutcome getMatchOutcome(ConditionContext context,%0A%09%09%09%09AnnotatedTypeMetadata metadata) %7B%0A%09%09%09if (ClassUtils.isPresent(%22org.hibernate.ejb.HibernateEntityManager%22,%0A%09%09%09%09%09context.getClassLoader())%0A%09%09%09%09%09%7C%7C ClassUtils.isPresent(%22org.hibernate.jpa.HibernateEntityManager%22,%0A%09%09%09%09%09%09%09context.getClassLoader())) %7B%0A%09%09%09%09return ConditionOutcome.match(%22found HibernateEntityManager class%22);%0A%09%09%09%7D%0A%09%09%09return ConditionOutcome.noMatch(%22did not find HibernateEntityManager class%22);%0A%09%09%7D%0A%09%7D%0A%0A
 %7D%0A

Use custom condition to detect Hibernate 4.2 and 4.3