Java tutorial
/* * Copyright (C) 2014 Joerg Wiesmann joerg.wiesmann@gmail.com * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ package de.inetsource.jsfforum.db; import de.inetsource.jsfforum.entity.Category; import java.util.List; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import javax.persistence.Query; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; /** * * @author Joerg Wiesmann joerg.wiesmann@gmail.com */ @Service public class CategoryFacade extends AbstractFacade<Category> { @PersistenceContext(unitName = "forumPU") private EntityManager em; @Override protected EntityManager getEntityManager() { return em; } public CategoryFacade() { super(Category.class); } @Override public List<Category> findAll() { try { Query q = em.createQuery("SELECT c FROM Category c order by c.id asc"); return q.getResultList(); } catch (Exception nre) { return null; } } @Override @Transactional public void edit(Category entity) { super.edit(entity); } }