/*
 * Copyright 2012-2019 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
 *
 *      https://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.io.IOException;
import java.net.URL;
import java.net.URLClassLoader;
import java.time.Duration;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.function.Consumer;
import java.util.stream.Collectors;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import javax.transaction.Synchronization;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import javax.transaction.UserTransaction;

import com.zaxxer.hikari.HikariDataSource;
import org.awaitility.Awaitility;
import org.hibernate.boot.model.naming.ImplicitNamingStrategy;
import org.hibernate.boot.model.naming.PhysicalNamingStrategy;
import org.hibernate.cfg.AvailableSettings;
import org.hibernate.dialect.H2Dialect;
import org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform;
import org.hibernate.engine.transaction.jta.platform.spi.JtaPlatform;
import org.hibernate.internal.SessionFactoryImpl;
import org.hibernate.jpa.HibernatePersistenceProvider;
import org.junit.jupiter.api.Test;

import org.springframework.beans.factory.BeanCreationException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.AutoConfigurations;
import org.springframework.boot.autoconfigure.TestAutoConfigurationPackage;
import org.springframework.boot.autoconfigure.flyway.FlywayAutoConfiguration;
import org.springframework.boot.autoconfigure.jdbc.DataSourceSchemaCreatedEvent;
import org.springframework.boot.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration;
import org.springframework.boot.autoconfigure.jdbc.XADataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.liquibase.LiquibaseAutoConfiguration;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfigurationTests.JpaUsingApplicationListenerConfiguration.EventCapturingApplicationListener;
import org.springframework.boot.autoconfigure.orm.jpa.mapping.NonAnnotatedEntity;
import org.springframework.boot.autoconfigure.orm.jpa.test.City;
import org.springframework.boot.autoconfigure.transaction.jta.JtaAutoConfiguration;
import org.springframework.boot.orm.jpa.hibernate.SpringImplicitNamingStrategy;
import org.springframework.boot.orm.jpa.hibernate.SpringJtaPlatform;
import org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy;
import org.springframework.boot.test.context.assertj.AssertableApplicationContext;
import org.springframework.boot.test.context.runner.ContextConsumer;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.JpaVendorAdapter;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.entry;
import static org.hamcrest.Matchers.hasSize;
import static org.mockito.Mockito.mock;

/**
 * Tests for {@link HibernateJpaAutoConfiguration}.
 *
 * @author Dave Syer
 * @author Phillip Webb
 * @author Andy Wilkinson
 * @author Kazuki Shimizu
 * @author Stephane Nicoll
 */
class HibernateJpaAutoConfigurationTests extends AbstractJpaAutoConfigurationTests {

	HibernateJpaAutoConfigurationTests() {
		super(HibernateJpaAutoConfiguration.class);
	}

	@Test
	void testDataScriptWithMissingDdl() {
		contextRunner().withPropertyValues("spring.datasource.data:classpath:/city.sql",
				// Missing:
				"spring.datasource.schema:classpath:/ddl.sql").run((context) -> {
					assertThat(context).hasFailed();
					assertThat(context.getStartupFailure()).hasMessageContaining("ddl.sql");
					assertThat(context.getStartupFailure()).hasMessageContaining("spring.datasource.schema");
				});
	}

	@Test
	void testDataScript() {
		// This can't succeed because the data SQL is executed immediately after the
		// schema
		// and Hibernate hasn't initialized yet at that point
		contextRunner().withPropertyValues("spring.datasource.data:classpath:/city.sql").run((context) -> {
			assertThat(context).hasFailed();
			assertThat(context.getStartupFailure()).isInstanceOf(BeanCreationException.class);
		});
	}

	@Test
	void testDataScriptRunsEarly() {
		contextRunner().withUserConfiguration(TestInitializedJpaConfiguration.class)
				.withClassLoader(new HideDataScriptClassLoader())
				.withPropertyValues("spring.jpa.show-sql=true", "spring.jpa.hibernate.ddl-auto:create-drop",
						"spring.datasource.data:classpath:/city.sql")
				.run((context) -> assertThat(context.getBean(TestInitializedJpaConfiguration.class).called).isTrue());
	}

	@Test
	void testFlywaySwitchOffDdlAuto() {
		contextRunner()
				.withPropertyValues("spring.datasource.initialization-mode:never",
						"spring.flyway.locations:classpath:db/city")
				.withConfiguration(AutoConfigurations.of(FlywayAutoConfiguration.class))
				.run((context) -> assertThat(context).hasNotFailed());
	}

	@Test
	void testFlywayPlusValidation() {
		contextRunner()
				.withPropertyValues("spring.datasource.initialization-mode:never",
						"spring.flyway.locations:classpath:db/city", "spring.jpa.hibernate.ddl-auto:validate")
				.withConfiguration(AutoConfigurations.of(FlywayAutoConfiguration.class))
				.run((context) -> assertThat(context).hasNotFailed());
	}

	@Test
	void testLiquibasePlusValidation() {
		contextRunner()
				.withPropertyValues("spring.datasource.initialization-mode:never",
						"spring.liquibase.changeLog:classpath:db/changelog/db.changelog-city.yaml",
						"spring.jpa.hibernate.ddl-auto:validate")
				.withConfiguration(AutoConfigurations.of(LiquibaseAutoConfiguration.class))
				.run((context) -> assertThat(context).hasNotFailed());
	}

	@Test
	void hibernateDialectIsNotSetByDefault() {
		contextRunner().run(assertJpaVendorAdapter(
				(adapter) -> assertThat(adapter.getJpaPropertyMap()).doesNotContainKeys("hibernate.dialect")));
	}

	@Test
	void hibernateDialectIsSetWhenDatabaseIsSet() {
		contextRunner().withPropertyValues("spring.jpa.database=H2")
				.run(assertJpaVendorAdapter((adapter) -> assertThat(adapter.getJpaPropertyMap())
						.contains(entry("hibernate.dialect", H2Dialect.class.getName()))));
	}

	@Test
	void hibernateDialectIsSetWhenDatabasePlatformIsSet() {
		String databasePlatform = TestH2Dialect.class.getName();
		contextRunner().withPropertyValues("spring.jpa.database-platform=" + databasePlatform)
				.run(assertJpaVendorAdapter((adapter) -> assertThat(adapter.getJpaPropertyMap())
						.contains(entry("hibernate.dialect", databasePlatform))));
	}

	private ContextConsumer<AssertableApplicationContext> assertJpaVendorAdapter(
			Consumer<HibernateJpaVendorAdapter> adapter) {
		return (context) -> {
			assertThat(context).hasSingleBean(JpaVendorAdapter.class);
			assertThat(context).hasSingleBean(HibernateJpaVendorAdapter.class);
			adapter.accept(context.getBean(HibernateJpaVendorAdapter.class));
		};
	}

	@Test
	void jtaDefaultPlatform() {
		contextRunner().withConfiguration(AutoConfigurations.of(JtaAutoConfiguration.class))
				.run(assertJtaPlatform(SpringJtaPlatform.class));
	}

	@Test
	void jtaCustomPlatform() {
		contextRunner()
				.withPropertyValues(
						"spring.jpa.properties.hibernate.transaction.jta.platform:" + TestJtaPlatform.class.getName())
				.withConfiguration(AutoConfigurations.of(JtaAutoConfiguration.class))
				.run(assertJtaPlatform(TestJtaPlatform.class));
	}

	@Test
	void jtaNotUsedByTheApplication() {
		contextRunner().run(assertJtaPlatform(NoJtaPlatform.class));
	}

	private ContextConsumer<AssertableApplicationContext> assertJtaPlatform(Class<? extends JtaPlatform> expectedType) {
		return (context) -> {
			SessionFactoryImpl sessionFactory = context.getBean(LocalContainerEntityManagerFactoryBean.class)
					.getNativeEntityManagerFactory().unwrap(SessionFactoryImpl.class);
			assertThat(sessionFactory.getServiceRegistry().getService(JtaPlatform.class)).isInstanceOf(expectedType);
		};
	}

	@Test
	void jtaCustomTransactionManagerUsingProperties() {
		contextRunner().withPropertyValues("spring.transaction.default-timeout:30",
				"spring.transaction.rollback-on-commit-failure:true").run((context) -> {
					JpaTransactionManager transactionManager = context.getBean(JpaTransactionManager.class);
					assertThat(transactionManager.getDefaultTimeout()).isEqualTo(30);
					assertThat(transactionManager.isRollbackOnCommitFailure()).isTrue();
				});
	}

	@Test
	void autoConfigurationBacksOffWithSeveralDataSources() {
		contextRunner()
				.withConfiguration(AutoConfigurations.of(DataSourceTransactionManagerAutoConfiguration.class,
						XADataSourceAutoConfiguration.class, JtaAutoConfiguration.class))
				.withUserConfiguration(TestTwoDataSourcesConfiguration.class).run((context) -> {
					assertThat(context).hasNotFailed();
					assertThat(context).doesNotHaveBean(EntityManagerFactory.class);
				});
	}

	@Test
	void providerDisablesAutoCommitIsConfigured() {
		contextRunner().withPropertyValues("spring.datasource.type:" + HikariDataSource.class.getName(),
				"spring.datasource.hikari.auto-commit:false").run((context) -> {
					Map<String, Object> jpaProperties = context.getBean(LocalContainerEntityManagerFactoryBean.class)
							.getJpaPropertyMap();
					assertThat(jpaProperties)
							.contains(entry("hibernate.connection.provider_disables_autocommit", "true"));
				});
	}

	@Test
	void providerDisablesAutoCommitIsNotConfiguredIfAutoCommitIsEnabled() {
		contextRunner().withPropertyValues("spring.datasource.type:" + HikariDataSource.class.getName(),
				"spring.datasource.hikari.auto-commit:true").run((context) -> {
					Map<String, Object> jpaProperties = context.getBean(LocalContainerEntityManagerFactoryBean.class)
							.getJpaPropertyMap();
					assertThat(jpaProperties).doesNotContainKeys("hibernate.connection.provider_disables_autocommit");
				});
	}

	@Test
	void providerDisablesAutoCommitIsNotConfiguredIfPropertyIsSet() {
		contextRunner()
				.withPropertyValues("spring.datasource.type:" + HikariDataSource.class.getName(),
						"spring.datasource.hikari.auto-commit:false",
						"spring.jpa.properties.hibernate.connection.provider_disables_autocommit=false")
				.run((context) -> {
					Map<String, Object> jpaProperties = context.getBean(LocalContainerEntityManagerFactoryBean.class)
							.getJpaPropertyMap();
					assertThat(jpaProperties)
							.contains(entry("hibernate.connection.provider_disables_autocommit", "false"));
				});
	}

	@Test
	void providerDisablesAutoCommitIsNotConfiguredWithJta() {
		contextRunner().withConfiguration(AutoConfigurations.of(JtaAutoConfiguration.class))
				.withPropertyValues("spring.datasource.type:" + HikariDataSource.class.getName(),
						"spring.datasource.hikari.auto-commit:false")
				.run((context) -> {
					Map<String, Object> jpaProperties = context.getBean(LocalContainerEntityManagerFactoryBean.class)
							.getJpaPropertyMap();
					assertThat(jpaProperties).doesNotContainKeys("hibernate.connection.provider_disables_autocommit");
				});
	}

	@Test
	void customResourceMapping() {
		contextRunner().withClassLoader(new HideDataScriptClassLoader())
				.withPropertyValues("spring.datasource.data:classpath:/db/non-annotated-data.sql",
						"spring.jpa.mapping-resources=META-INF/mappings/non-annotated.xml")
				.run((context) -> {
					EntityManager em = context.getBean(EntityManagerFactory.class).createEntityManager();
					NonAnnotatedEntity found = em.find(NonAnnotatedEntity.class, 2000L);
					assertThat(found).isNotNull();
					assertThat(found.getValue()).isEqualTo("Test");
				});
	}

	@Test
	void physicalNamingStrategyCanBeUsed() {
		contextRunner().withUserConfiguration(TestPhysicalNamingStrategyConfiguration.class).run((context) -> {
			Map<String, Object> hibernateProperties = context.getBean(HibernateJpaConfiguration.class)
					.getVendorProperties();
			assertThat(hibernateProperties).contains(
					entry("hibernate.physical_naming_strategy", context.getBean("testPhysicalNamingStrategy")));
			assertThat(hibernateProperties).doesNotContainKeys("hibernate.ejb.naming_strategy");
		});
	}

	@Test
	void implicitNamingStrategyCanBeUsed() {
		contextRunner().withUserConfiguration(TestImplicitNamingStrategyConfiguration.class).run((context) -> {
			Map<String, Object> hibernateProperties = context.getBean(HibernateJpaConfiguration.class)
					.getVendorProperties();
			assertThat(hibernateProperties).contains(
					entry("hibernate.implicit_naming_strategy", context.getBean("testImplicitNamingStrategy")));
			assertThat(hibernateProperties).doesNotContainKeys("hibernate.ejb.naming_strategy");
		});
	}

	@Test
	void namingStrategyInstancesTakePrecedenceOverNamingStrategyProperties() {
		contextRunner()
				.withUserConfiguration(TestPhysicalNamingStrategyConfiguration.class,
						TestImplicitNamingStrategyConfiguration.class)
				.withPropertyValues("spring.jpa.hibernate.naming.physical-strategy:com.example.Physical",
						"spring.jpa.hibernate.naming.implicit-strategy:com.example.Implicit")
				.run((context) -> {
					Map<String, Object> hibernateProperties = context.getBean(HibernateJpaConfiguration.class)
							.getVendorProperties();
					assertThat(hibernateProperties).contains(
							entry("hibernate.physical_naming_strategy", context.getBean("testPhysicalNamingStrategy")),
							entry("hibernate.implicit_naming_strategy", context.getBean("testImplicitNamingStrategy")));
					assertThat(hibernateProperties).doesNotContainKeys("hibernate.ejb.naming_strategy");
				});
	}

	@Test
	void hibernatePropertiesCustomizerTakesPrecedenceOverStrategyInstancesAndNamingStrategyProperties() {
		contextRunner()
				.withUserConfiguration(TestHibernatePropertiesCustomizerConfiguration.class,
						TestPhysicalNamingStrategyConfiguration.class, TestImplicitNamingStrategyConfiguration.class)
				.withPropertyValues("spring.jpa.hibernate.naming.physical-strategy:com.example.Physical",
						"spring.jpa.hibernate.naming.implicit-strategy:com.example.Implicit")
				.run((context) -> {
					Map<String, Object> hibernateProperties = context.getBean(HibernateJpaConfiguration.class)
							.getVendorProperties();
					TestHibernatePropertiesCustomizerConfiguration configuration = context
							.getBean(TestHibernatePropertiesCustomizerConfiguration.class);
					assertThat(hibernateProperties).contains(
							entry("hibernate.physical_naming_strategy", configuration.physicalNamingStrategy),
							entry("hibernate.implicit_naming_strategy", configuration.implicitNamingStrategy));
					assertThat(hibernateProperties).doesNotContainKeys("hibernate.ejb.naming_strategy");
				});
	}

	@Test
	void eventListenerCanBeRegisteredAsBeans() {
		contextRunner().withUserConfiguration(TestInitializedJpaConfiguration.class)
				.withClassLoader(new HideDataScriptClassLoader()).withPropertyValues("spring.jpa.show-sql=true",
						"spring.jpa.hibernate.ddl-auto:create-drop", "spring.datasource.data:classpath:/city.sql")
				.run((context) -> {
					// See CityListener
					assertThat(context).hasSingleBean(City.class);
					assertThat(context.getBean(City.class).getName()).isEqualTo("Washington");
				});
	}

	@Test
	void hibernatePropertiesCustomizerCanDisableBeanContainer() {
		contextRunner().withUserConfiguration(DisableBeanContainerConfiguration.class)
				.run((context) -> assertThat(context).doesNotHaveBean(City.class));
	}

	@Test
	void withSyncBootstrappingAnApplicationListenerThatUsesJpaDoesNotTriggerABeanCurrentlyInCreationException() {
		contextRunner().withUserConfiguration(JpaUsingApplicationListenerConfiguration.class)
				.withPropertyValues("spring.datasource.initialization-mode=never").run((context) -> {
					assertThat(context).hasNotFailed();
					assertThat(context.getBean(EventCapturingApplicationListener.class).events.stream()
							.filter(DataSourceSchemaCreatedEvent.class::isInstance)).hasSize(1);
				});
	}

	@Test
	void withAsyncBootstrappingAnApplicationListenerThatUsesJpaDoesNotTriggerABeanCurrentlyInCreationException() {
		contextRunner()
				.withUserConfiguration(AsyncBootstrappingConfiguration.class,
						JpaUsingApplicationListenerConfiguration.class)
				.withPropertyValues("spring.datasource.initialization-mode=never").run((context) -> {
					assertThat(context).hasNotFailed();
					EventCapturingApplicationListener listener = context
							.getBean(EventCapturingApplicationListener.class);
					Awaitility.waitAtMost(Duration.ofSeconds(30))
							.until(() -> dataSourceSchemaCreatedEventsReceivedBy(listener), hasSize(1));
				});
	}

	@Test
	void whenLocalContanerEntityManagerFactoryBeanHasNoJpaVendorAdapterAutoConfigurationSucceeds() {
		contextRunner()
				.withUserConfiguration(
						TestConfigurationWithLocalContainerEntityManagerFactoryBeanWithNoJpaVendorAdapter.class)
				.run((context) -> {
					EntityManagerFactory factoryBean = context.getBean(EntityManagerFactory.class);
					Map<String, Object> map = factoryBean.getProperties();
					assertThat(map.get("configured")).isEqualTo("manually");
				});
	}

	private List<ApplicationEvent> dataSourceSchemaCreatedEventsReceivedBy(EventCapturingApplicationListener listener) {
		return listener.events.stream().filter(DataSourceSchemaCreatedEvent.class::isInstance)
				.collect(Collectors.toList());
	}

	@Configuration(proxyBeanMethods = false)
	@TestAutoConfigurationPackage(City.class)
	static class TestInitializedJpaConfiguration {

		private boolean called;

		@Autowired
		void validateDataSourceIsInitialized(EntityManagerFactory entityManagerFactory) {
			// Inject the entity manager to validate it is initialized at the injection
			// point
			EntityManager entityManager = entityManagerFactory.createEntityManager();
			City city = entityManager.find(City.class, 2000L);
			assertThat(city).isNotNull();
			assertThat(city.getName()).isEqualTo("Washington");
			this.called = true;
		}

	}

	@Configuration(proxyBeanMethods = false)
	static class TestImplicitNamingStrategyConfiguration {

		@Bean
		ImplicitNamingStrategy testImplicitNamingStrategy() {
			return new SpringImplicitNamingStrategy();
		}

	}

	@Configuration(proxyBeanMethods = false)
	static class TestPhysicalNamingStrategyConfiguration {

		@Bean
		PhysicalNamingStrategy testPhysicalNamingStrategy() {
			return new SpringPhysicalNamingStrategy();
		}

	}

	@Configuration(proxyBeanMethods = false)
	static class TestHibernatePropertiesCustomizerConfiguration {

		private final PhysicalNamingStrategy physicalNamingStrategy = new SpringPhysicalNamingStrategy();

		private final ImplicitNamingStrategy implicitNamingStrategy = new SpringImplicitNamingStrategy();

		@Bean
		HibernatePropertiesCustomizer testHibernatePropertiesCustomizer() {
			return (hibernateProperties) -> {
				hibernateProperties.put("hibernate.physical_naming_strategy", this.physicalNamingStrategy);
				hibernateProperties.put("hibernate.implicit_naming_strategy", this.implicitNamingStrategy);
			};
		}

	}

	@Configuration(proxyBeanMethods = false)
	static class DisableBeanContainerConfiguration {

		@Bean
		HibernatePropertiesCustomizer disableBeanContainerHibernatePropertiesCustomizer() {
			return (hibernateProperties) -> hibernateProperties.remove(AvailableSettings.BEAN_CONTAINER);
		}

	}

	public static class TestJtaPlatform implements JtaPlatform {

		@Override
		public TransactionManager retrieveTransactionManager() {
			return mock(TransactionManager.class);
		}

		@Override
		public UserTransaction retrieveUserTransaction() {
			throw new UnsupportedOperationException();
		}

		@Override
		public Object getTransactionIdentifier(Transaction transaction) {
			throw new UnsupportedOperationException();
		}

		@Override
		public boolean canRegisterSynchronization() {
			throw new UnsupportedOperationException();
		}

		@Override
		public void registerSynchronization(Synchronization synchronization) {
			throw new UnsupportedOperationException();
		}

		@Override
		public int getCurrentStatus() {
			throw new UnsupportedOperationException();
		}

	}

	static class HideDataScriptClassLoader extends URLClassLoader {

		private static final List<String> HIDDEN_RESOURCES = Arrays.asList("schema-all.sql", "schema.sql");

		HideDataScriptClassLoader() {
			super(new URL[0], HideDataScriptClassLoader.class.getClassLoader());
		}

		@Override
		public Enumeration<URL> getResources(String name) throws IOException {
			if (HIDDEN_RESOURCES.contains(name)) {
				return Collections.emptyEnumeration();
			}
			return super.getResources(name);
		}

	}

	@org.springframework.context.annotation.Configuration(proxyBeanMethods = false)
	static class JpaUsingApplicationListenerConfiguration {

		@Bean
		EventCapturingApplicationListener jpaUsingApplicationListener(EntityManagerFactory emf) {
			return new EventCapturingApplicationListener();
		}

		static class EventCapturingApplicationListener implements ApplicationListener<ApplicationEvent> {

			private final List<ApplicationEvent> events = new ArrayList<>();

			@Override
			public void onApplicationEvent(ApplicationEvent event) {
				this.events.add(event);
			}

		}

	}

	@Configuration(proxyBeanMethods = false)
	static class AsyncBootstrappingConfiguration {

		@Bean
		ThreadPoolTaskExecutor ThreadPoolTaskExecutor() {
			return new ThreadPoolTaskExecutor();
		}

		@Bean
		EntityManagerFactoryBuilderCustomizer asyncBootstrappingCustomizer(ThreadPoolTaskExecutor executor) {
			return (builder) -> builder.setBootstrapExecutor(executor);
		}

	}

	@Configuration(proxyBeanMethods = false)
	static class TestConfigurationWithLocalContainerEntityManagerFactoryBeanWithNoJpaVendorAdapter
			extends TestConfiguration {

		@Bean
		LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource) {
			LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();
			factoryBean.setDataSource(dataSource);
			factoryBean.setPersistenceUnitName("manually-configured");
			factoryBean.setPersistenceProviderClass(HibernatePersistenceProvider.class);
			Map<String, Object> properties = new HashMap<>();
			properties.put("configured", "manually");
			properties.put("hibernate.transaction.jta.platform", NoJtaPlatform.INSTANCE);
			factoryBean.setJpaPropertyMap(properties);
			return factoryBean;
		}

	}

	public static class TestH2Dialect extends H2Dialect {

	}

}
