Java tutorial
/** * openkm, Open Document Management System (http://www.openkm.com) * Copyright (c) 2006-2013 Paco Avila & Josep Llort * * No bytes were intentionally harmed during the development of this application. * * 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., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ package com.ikon.dao; import java.util.List; import org.hibernate.HibernateException; import org.hibernate.Query; import org.hibernate.Session; import org.hibernate.Transaction; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import com.ikon.core.DatabaseException; import com.ikon.dao.bean.TwitterAccount; public class TwitterAccountDAO { private static Logger log = LoggerFactory.getLogger(TwitterAccountDAO.class); private TwitterAccountDAO() { } /** * Create account */ public static void create(TwitterAccount ta) throws DatabaseException { log.debug("create({})", ta); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); session.save(ta); HibernateUtil.commit(tx); } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } log.debug("create: void"); } /** * Update */ public static void update(TwitterAccount ta) throws DatabaseException { log.debug("update({})", ta); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); session.update(ta); HibernateUtil.commit(tx); } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } log.debug("update: void"); } /** * Delete */ public static void delete(long taId) throws DatabaseException { log.debug("delete({})", taId); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); TwitterAccount ta = (TwitterAccount) session.load(TwitterAccount.class, taId); session.delete(ta); HibernateUtil.commit(tx); } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } log.debug("deleteTwitterAccount: void"); } /** * Find by user */ @SuppressWarnings("unchecked") public static List<TwitterAccount> findByUser(String user, boolean filterByActive) throws DatabaseException { log.debug("findByUser({})", user); String qs = "from TwitterAccount ta where ta.user=:user " + (filterByActive ? "and ta.active=:active" : "") + " order by ta.id"; Session session = null; try { session = HibernateUtil.getSessionFactory().openSession(); Query q = session.createQuery(qs); q.setString("user", user); if (filterByActive) { q.setBoolean("active", true); } List<TwitterAccount> ret = q.list(); log.debug("findByUser: {}", ret); return ret; } catch (HibernateException e) { throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } /** * Find all twitter accounts */ @SuppressWarnings("unchecked") public static List<TwitterAccount> findAll(boolean filterByActive) throws DatabaseException { log.debug("findAll()"); String qs = "from TwitterAccount ta " + (filterByActive ? "where ta.active=:active" : "") + " order by ta.id"; Session session = null; try { session = HibernateUtil.getSessionFactory().openSession(); Query q = session.createQuery(qs); if (filterByActive) { q.setBoolean("active", true); } List<TwitterAccount> ret = q.list(); log.debug("findAll: {}", ret); return ret; } catch (HibernateException e) { throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } /** * Find by pk */ public static TwitterAccount findByPk(long taId) throws DatabaseException { log.debug("findByPk({})", taId); String qs = "from TwitterAccount ta where ta.id=:id"; Session session = null; try { session = HibernateUtil.getSessionFactory().openSession(); Query q = session.createQuery(qs); q.setLong("id", taId); TwitterAccount ret = (TwitterAccount) q.setMaxResults(1).uniqueResult(); log.debug("findByPk: {}", ret); return ret; } catch (HibernateException e) { throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } }