Java tutorial
/** * OpenKM, Open Document Management System (http://www.openkm.com) * Copyright (c) 2006-2017 Paco Avila & Josep Llort * <p> * No bytes were intentionally harmed during the development of this application. * <p> * 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. * <p> * 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. * <p> * 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.openkm.extension.dao; import com.openkm.core.DatabaseException; import com.openkm.dao.HibernateUtil; import com.openkm.extension.dao.bean.Forum; import com.openkm.extension.dao.bean.ForumPost; import com.openkm.extension.dao.bean.ForumTopic; 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 java.util.List; /** * ExtensionDAO * * @author pavila */ public class ForumDAO { private static Logger log = LoggerFactory.getLogger(ForumDAO.class); private ForumDAO() { } /** * Create */ public static long create(Forum frm) throws DatabaseException { log.debug("create({})", frm); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); Long id = (Long) session.save(frm); HibernateUtil.commit(tx); log.debug("create: {}" + id); return id; } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } /** * Update */ public static void update(Forum frm) throws DatabaseException { log.debug("update({})", frm); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); session.update(frm); HibernateUtil.commit(tx); } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } log.debug("update: void"); } /** * Update */ public static void update(ForumTopic topic) throws DatabaseException { log.debug("update({})", topic); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); session.update(topic); HibernateUtil.commit(tx); } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } log.debug("update: void"); } /** * Update */ public static void update(ForumPost post) throws DatabaseException { log.debug("update({})", post); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); session.update(post); 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 frmId) throws DatabaseException { log.debug("delete({})", frmId); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); Forum frm = (Forum) session.load(Forum.class, frmId); session.delete(frm); HibernateUtil.commit(tx); } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } log.debug("deleteSent: void"); } /** * Find by pk */ public static Forum findByPk(long id) throws DatabaseException { log.debug("findByPk({})"); String qs = "from Forum frm where frm.id=:id"; Session session = null; try { session = HibernateUtil.getSessionFactory().openSession(); Query q = session.createQuery(qs); q.setLong("id", id); Forum ret = (Forum) q.setMaxResults(1).uniqueResult(); log.debug("findByPk: {}", ret); return ret; } catch (HibernateException e) { throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } /** * Find by pk */ public static ForumTopic findTopicByPk(long id) throws DatabaseException { log.debug("findTopicByPk({})"); Session session = null; try { session = HibernateUtil.getSessionFactory().openSession(); ForumTopic ret = (ForumTopic) session.get(ForumTopic.class, id); log.debug("findTopicByPk: {}", ret); return ret; } catch (HibernateException e) { throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } /** * Find by pk */ public static ForumPost findPostByPk(long id) throws DatabaseException { log.debug("findPostByPk({})"); Session session = null; try { session = HibernateUtil.getSessionFactory().openSession(); ForumPost ret = (ForumPost) session.get(ForumPost.class, id); log.debug("findPostByPk: {}", ret); return ret; } catch (HibernateException e) { throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } /** * Find all forums */ @SuppressWarnings("unchecked") public static List<Forum> findAll() throws DatabaseException { log.debug("findAll({})"); String qs = "from Forum frm order by frm.date asc"; Session session = null; try { session = HibernateUtil.getSessionFactory().openSession(); Query q = session.createQuery(qs); List<Forum> ret = q.list(); log.debug("findAll: {}", ret); return ret; } catch (HibernateException e) { throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } /** * Find all topics by node */ @SuppressWarnings("unchecked") public static List<ForumTopic> findAllTopicsByNode(String uuid) throws DatabaseException { log.debug("findAllTopicsByNode({})"); String qs = "from ForumTopic ft where ft.node=:uuid order by ft.lastPostDate desc"; Session session = null; try { session = HibernateUtil.getSessionFactory().openSession(); Query q = session.createQuery(qs); q.setString("uuid", uuid); List<ForumTopic> ret = q.list(); log.debug("findAllTopicsByNode: {}", ret); return ret; } catch (HibernateException e) { throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } /** * Remove forum topics by parent node */ @SuppressWarnings("unchecked") public static void purgeTopicsByNode(String nodeUuid) throws DatabaseException { log.debug("purgeTopicsByNode({})", nodeUuid); String qs = "from ForumTopic ft where ft.node=:uuid"; Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); Query q = session.createQuery(qs); q.setString("uuid", nodeUuid); for (ForumTopic ft : (List<ForumTopic>) q.list()) { session.delete(ft); } HibernateUtil.commit(tx); log.debug("purgeTopicsByNode: void"); } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } }