/*******************************************************************************
* * Copyright 2012 Impetus Infotech.
* *
* * 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 com.impetus.kundera;
import java.util.Map;
import javax.persistence.EntityManagerFactory;
import javax.persistence.spi.PersistenceProvider;
import javax.persistence.spi.PersistenceUnitInfo;
import javax.persistence.spi.ProviderUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.impetus.kundera.configure.PersistenceUnitConfigurationException;
import com.impetus.kundera.persistence.EntityManagerFactoryImpl;
/**
* The Class KunderaPersistence.
*
* @author animesh.kumar
*/
@SuppressWarnings("unchecked")
public class KunderaPersistence implements PersistenceProvider
{
/** The logger. */
private static Logger logger = LoggerFactory.getLogger(KunderaPersistence.class);
private final ProviderUtil providerUtil;
private final PersistenceUtilHelper.MetadataCache cache;
/**
* Instantiates a new kundera persistence.
*/
public KunderaPersistence()
{
this.providerUtil = new KunderaPersistenceProviderUtil(this);
this.cache = new PersistenceUtilHelper.MetadataCache();
}
@Override
public final EntityManagerFactory createContainerEntityManagerFactory(PersistenceUnitInfo info, Map map)
{
synchronized (this)
{
try
{
EntityManagerFactory emf = new EntityManagerFactoryImpl(info, map);
return emf;
}
catch (PersistenceUnitConfigurationException pcex)
{
// Means it is not for kundera persistence!
logger.error("EntityManagerFactory not created, returning null.");
return null;
}
}
}
@Override
public synchronized final EntityManagerFactory createEntityManagerFactory(String persistenceUnit, Map map)
{
// TODO: This may be a comma separated PU list, synchronizing on this
// list may not be intended
synchronized (this)
{
try
{
EntityManagerFactory emf = new EntityManagerFactoryImpl(persistenceUnit, map);
return emf;
}
catch (PersistenceUnitConfigurationException pcex)
{
// Means it is not for kundera persistence!
logger.error("EntityManagerFactory not created, returning null.");
return null;
}
}
}
/**
* Returns Persistence Provider util
*
* @see javax.persistence.spi.PersistenceProvider#getProviderUtil()
*/
@Override
public ProviderUtil getProviderUtil()
{
return this.providerUtil;
}
/**
* @return the cache
*/
public PersistenceUtilHelper.MetadataCache getCache()
{
return cache;
}
@Override
public void generateSchema(PersistenceUnitInfo arg0, Map arg1)
{
//TODO: See https://github.com/impetus-opensource/Kundera/issues/457
// do nothing.
}
@Override
public boolean generateSchema(String arg0, Map arg1)
{
// returning default.
return false;
}
}