package com.totsp.example.jpa.dao.plain;

import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.PersistenceUnit;

import org.apache.log4j.Logger;

public class BaseDao
{
    private static final Logger LOG = Logger.getLogger(BaseDao.class);
    
    @PersistenceUnit 
    protected EntityManagerFactory emf; 
    
    public BaseDao()
    {   
        emf = Persistence.createEntityManagerFactory("sample");
        LOG.debug("EntityManagerFactory created");
    }
    
    public void finalize() throws Throwable
    {      
        LOG.debug("finalize invoked");
        try
        {
            if (emf != null)
            {
                emf.close();
                LOG.debug("EntityManagerFactory closed");
            }
        }
        finally
        {
            super.finalize();
        }        
    }
    
}