/*
* Copyright 2002-2009 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.orm.jpa.vendor;
import java.util.HashMap;
import java.util.Map;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.spi.PersistenceProvider;
import org.hibernate.cfg.Environment;
import org.hibernate.dialect.DB2Dialect;
import org.hibernate.dialect.DerbyDialect;
import org.hibernate.dialect.H2Dialect;
import org.hibernate.dialect.HSQLDialect;
import org.hibernate.dialect.InformixDialect;
import org.hibernate.dialect.MySQLDialect;
import org.hibernate.dialect.Oracle9iDialect;
import org.hibernate.dialect.PostgreSQLDialect;
import org.hibernate.dialect.SQLServerDialect;
import org.hibernate.dialect.SybaseDialect;
import org.hibernate.ejb.HibernateEntityManager;
import org.hibernate.ejb.HibernateEntityManagerFactory;
import org.hibernate.ejb.HibernatePersistence;
import org.springframework.orm.jpa.JpaDialect;
/**
* {@link org.springframework.orm.jpa.JpaVendorAdapter} implementation for
* Hibernate EntityManager. Developed and tested against Hibernate 3.3.
*
* <p>Exposes Hibernate's persistence provider and EntityManager extension interface,
* and supports {@link AbstractJpaVendorAdapter}'s common configuration settings.
*
* @author Juergen Hoeller
* @author Rod Johnson
* @since 2.0
* @see org.hibernate.ejb.HibernatePersistence
* @see org.hibernate.ejb.HibernateEntityManager
*/
public class HibernateJpaVendorAdapter extends AbstractJpaVendorAdapter {
private final PersistenceProvider persistenceProvider = new HibernatePersistence();
private final JpaDialect jpaDialect = new HibernateJpaDialect();
public PersistenceProvider getPersistenceProvider() {
return this.persistenceProvider;
}
@Override
public String getPersistenceProviderRootPackage() {
return "org.hibernate";
}
@Override
public Map<String, Object> getJpaPropertyMap() {
Map<String, Object> jpaProperties = new HashMap<String, Object>();
if (getDatabasePlatform() != null) {
jpaProperties.put(Environment.DIALECT, getDatabasePlatform());
}
else if (getDatabase() != null) {
Class databaseDialectClass = determineDatabaseDialectClass(getDatabase());
if (databaseDialectClass != null) {
jpaProperties.put(Environment.DIALECT, databaseDialectClass.getName());
}
}
if (isGenerateDdl()) {
jpaProperties.put(Environment.HBM2DDL_AUTO, "update");
}
if (isShowSql()) {
jpaProperties.put(Environment.SHOW_SQL, "true");
}
return jpaProperties;
}
/**
* Determine the Hibernate database dialect class for the given target database.
* @param database the target database
* @return the Hibernate database dialect class, or <code>null<code> if none found
*/
protected Class determineDatabaseDialectClass(Database database) {
switch (database) {
case DB2: return DB2Dialect.class;
case DERBY: return DerbyDialect.class;
case H2: return H2Dialect.class;
case HSQL: return HSQLDialect.class;
case INFORMIX: return InformixDialect.class;
case MYSQL: return MySQLDialect.class;
case ORACLE: return Oracle9iDialect.class;
case POSTGRESQL: return PostgreSQLDialect.class;
case SQL_SERVER: return SQLServerDialect.class;
case SYBASE: return SybaseDialect.class;
default: return null;
}
}
@Override
public JpaDialect getJpaDialect() {
return this.jpaDialect;
}
@Override
public Class<? extends EntityManagerFactory> getEntityManagerFactoryInterface() {
return HibernateEntityManagerFactory.class;
}
@Override
public Class<? extends EntityManager> getEntityManagerInterface() {
return HibernateEntityManager.class;
}
}
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