package tutorial.persistence;

import java.util.*;
import javax.persistence.*;

/**
 * Populates the database with an initial set of values for the
 * tutorial.
 */
public class SeedDatabase {

    public static void seed(EntityManager em) {
        List objects = new LinkedList();
        objects.add(new Dog("Binney", 80));
        objects.add(new Dog("Fido", 50));
        objects.add(new Dog("Odie", 30));
        objects.add(new Dog("Tasha", 75));
        objects.add(new Dog("Rusty", 25));

        // write the new objects to the database
        em.getTransaction().begin();
        for (Object ob : objects)
            em.persist(ob);
        em.getTransaction().commit();

        System.out.println("Created " + objects.size() + " new dogs.");
    }

    public static void main(String[] args) {
        EntityManagerFactory emf = Persistence.
            createEntityManagerFactory(null);
        EntityManager em = emf.createEntityManager();
        seed(em);
        em.close();
        emf.close();
    }
}