src/beans/ProductManager.java


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/*
 * $RCSFile$
 *
 * Created on 11.06.2007
 * for Project: 
 * by steins
 *
 * (C) 2005-2006 by 
 */
package beans;

import java.io.IOException;
import java.util.Map;

import javax.faces.context.FacesContext;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;

import jpa.Product;

public class ProductManager
{
   private Product current;
   
   public Product getCurrent()
   {
      return current;
   }

   public void select(javax.faces.event.ActionEvent actionEvent)
   {
      FacesContext facesContext = FacesContext.getCurrentInstance();
      Map params = facesContext.getExternalContext().getRequestParameterMap();
      String selectedId = (String) params.get("selectedId");
//      System.out.println(selectedId);

      EntityManagerFactory factory = Persistence
            .createEntityManagerFactory("catalog");
      EntityManager manager = factory.createEntityManager();

      EntityTransaction tx = manager.getTransaction();
      tx.begin();
      try
      {
         current = manager.find(Product.class, selectedId);

         tx.commit();
      }
      catch (Exception ex)
      {
         ex.printStackTrace(System.err);
         tx.rollback();
      }

      FacesContext context = FacesContext.getCurrentInstance();
      try
      {
         context.getExternalContext().redirect("product.jsf");
      }
      catch (IOException e)
      {
         // TODO Auto-generated catch block
         e.printStackTrace();
      }
      context.responseComplete();
   }

}