carsessionbean.java

来自「Java Application using EJB 3.0 for renti」· Java 代码 · 共 53 行

/*
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 * and open the template in the editor.
 */

package BusinessSessionBeans;

import javax.ejb.Stateless;
import java.util.List;
import Entities.CarEntityBean;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
/**
 *
 * @author kiriashoo
 */
@Stateless
public class CarSessionBean implements CarSessionBeanRemote {
    // Add business logic below. (Right-click in editor and choose
    // "EJB Methods > Add Business Method" or "Web Service > Add Operation")
    @PersistenceContext
    EntityManager em;
    // make, model, year,price
    public void create(String make, String model, int year, int price, int status) {
        CarEntityBean carBean = new CarEntityBean();
        carBean.setMake(make);
        carBean.setModel(model);
        carBean.setYearOfFabr(year);
        carBean.setStatus(status);
        carBean.setPrice(price);
        em.persist(carBean);
    }
    
    public void edit(CarEntityBean carBean){
        em.merge(carBean);
    }
    
    public void destroy(Integer id){
        CarEntityBean carBean = (CarEntityBean) em.find(CarEntityBean.class, id);
        em.remove(carBean);
    }
    
    public CarEntityBean find(Object pk){
        return (CarEntityBean) em.find(CarEntityBean.class,pk);
    }
    
    public List findAll(){
        return 
        em.createQuery("select OBJECT(o) from CarEntityBean o").getResultList();
    }
    
}