/**
* @(#)SessionFactoryHelper.java 1.0.0 2:57:50 PM
*
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package com.idega.hibernate;
import javax.persistence.EntityManagerFactory;
import org.hibernate.SessionFactory;
import org.hibernate.ejb.HibernateEntityManagerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import com.idega.util.expression.ELUtil;
/**
* <p>
* Class for helping to get {@link SessionFactory}. A singleton.
* </p>
* <p>
* You can report about problems to: <a
* href="mailto:martynas@idega.com">Martynas Stakė</a>
* </p>
* <p>
* You can expect to find some test cases notice in the end of the file.
* </p>
*
* @version 1.0.0 Apr 5, 2012
* @author martynasstake
*/
public class SessionFactoryHelper {
private static SessionFactory sessionFactory = null;
private static SessionFactoryHelper helper;
@Autowired
private EntityManagerFactory entityManagerFactory;
static {
helper = new SessionFactoryHelper();
}
private SessionFactoryHelper() {
sessionFactory = ((HibernateEntityManagerFactory) getEntityManagerFactory()).getSessionFactory();
}
/**
* @return instance of {@link SessionFactoryHelper}.
* @author <a href="mailto:martynas@idega.com">Martynas Stakė</a>
*/
public static SessionFactoryHelper getInstance() {
return helper;
}
/**
* <p>A method for other application to get SessionFactory object
* initialized in this helper class.</p>
* @return {@link SessionFactory} instance of started system.
*/
public SessionFactory getSessionFactory() {
return sessionFactory;
}
/**
* <p>Initiates {@link EntityManagerFactory}, if not initiated.</p>
* @return autowired {@link EntityManagerFactory}.
* @author <a href="mailto:martynas@idega.com">Martynas Stakė</a>
*/
private EntityManagerFactory getEntityManagerFactory() {
if (entityManagerFactory == null) {
ELUtil.getInstance().autowire(this);
}
return entityManagerFactory;
}
}