/*
* Copyright 2002-2016 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.integration.jpa.core;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.orm.jpa.SharedEntityManagerCreator;
import org.springframework.util.Assert;
/**
*
* @author Gunnar Hillert
*
* @since 2.2
*
*/
abstract class AbstractJpaOperations implements JpaOperations, InitializingBean {
protected EntityManager entityManager;
private EntityManagerFactory entityManagerFactory;
public void setEntityManager(EntityManager entityManager) {
Assert.notNull(entityManager, "The provided entityManager must not be null.");
this.entityManager = entityManager;
}
public void setEntityManagerFactory(EntityManagerFactory entityManagerFactory) {
Assert.notNull(entityManagerFactory, "The provided entityManagerFactory must not be null.");
this.entityManagerFactory = entityManagerFactory;
}
public final void afterPropertiesSet() {
this.onInit();
}
/**
* Subclasses may implement this for initialization logic.
*/
protected void onInit() {
if (this.entityManager == null && this.entityManagerFactory != null) {
this.entityManager = SharedEntityManagerCreator.createSharedEntityManager(this.entityManagerFactory);
}
Assert.notNull(this.entityManager, "The entityManager is null. Please set " +
"either the entityManager or the entityManagerFactory.");
}
@Override
public void flush() {
this.entityManager.flush();
}
}