/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.deltaspike.data.impl.util.jpa;
import org.apache.deltaspike.data.impl.util.EntityUtils;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceUnitUtil;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class OpenJpaPersistenceUnitUtilDelegate implements PersistenceUnitUtil
{
private final PersistenceUnitUtil persistenceUnitUtil;
private final EntityManager entityManager;
public OpenJpaPersistenceUnitUtilDelegate(EntityManager entityManager)
{
this.persistenceUnitUtil = entityManager.getEntityManagerFactory().getPersistenceUnitUtil();
this.entityManager = entityManager;
}
@Override
public boolean isLoaded(Object entity, String attributeName)
{
return persistenceUnitUtil.isLoaded(entity, attributeName);
}
@Override
public boolean isLoaded(Object entity)
{
return persistenceUnitUtil.isLoaded(entity);
}
@Override
public Object getIdentifier(Object entity)
{
final String methodName = "getIdObject";
try
{
if (!entityManager.contains(entity))
{
entity = entityManager.getReference(entity.getClass(), EntityUtils.primaryKeyValue(entity));
}
final Object identifier = persistenceUnitUtil.getIdentifier(entity);
if (identifier != null)
{
final Method method;
method = identifier.getClass().getMethod(methodName);
return method.invoke(identifier);
}
}
catch (NoSuchMethodException e)
{
throw new RuntimeException(e);
}
catch (InvocationTargetException e)
{
throw new RuntimeException(e);
}
catch (IllegalAccessException e)
{
throw new RuntimeException(e);
}
catch (IllegalStateException e)
{
return null;
}
return null;
}
}