es.us.isa.ideas.utilities.PopulateDatabase.java Source code

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Here is the source code for es.us.isa.ideas.utilities.PopulateDatabase.java

Source

/* PopulateDatabase.java
 *
 * Copyright (C) 2012 Universidad de Sevilla
 * 
 * The use of this project is hereby constrained to the conditions of the 
 * TDG Licence, a copy of which you may download from 
 * http://www.tdg-seville.info/License.html
 * 
 */

package es.us.isa.ideas.utilities;

import java.util.Map.Entry;

import javax.persistence.Entity;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class PopulateDatabase {

    public static void main(String[] args) {

        ApplicationContext ctx;
        EntityManagerFactory emf;
        EntityManager em;
        EntityTransaction et;

        ctx = new ClassPathXmlApplicationContext("utilities/PopulateDatabase.xml");

        emf = Persistence.createEntityManagerFactory("persistenceUnit");
        em = emf.createEntityManager();
        et = em.getTransaction();

        et.begin();
        try {
            for (Entry<String, Object> entry : ctx.getBeansWithAnnotation(Entity.class).entrySet()) {
                em.persist(entry.getValue());
                System.out.println(String.format("Persisting (%s, %s@%d)", entry.getKey(),
                        entry.getValue().getClass().getName(), entry.getValue().hashCode()));
            }
            et.commit();
        } catch (Exception oops) {
            oops.printStackTrace();
            et.rollback();
            oops.printStackTrace();
        } finally {
            if (em.isOpen())
                em.close();
            if (emf.isOpen())
                emf.close();
            ((ClassPathXmlApplicationContext) ctx).close();
        }
    }
}