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.bean.Folder; import com.ikon.bean.Repository; import com.ikon.core.DatabaseException; import com.ikon.core.PathNotFoundException; import com.ikon.core.RepositoryException; import com.ikon.dao.bean.Bookmark; import com.ikon.dao.bean.NodeBase; public class BookmarkDAO { private static Logger log = LoggerFactory.getLogger(BookmarkDAO.class); private BookmarkDAO() { } /** * Create */ public static void create(Bookmark bm) throws DatabaseException { log.debug("create({})", bm); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); session.save(bm); 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(Bookmark bm) throws DatabaseException { log.debug("update({})", bm); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); session.update(bm); 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 bmId) throws DatabaseException { log.debug("delete({})", bmId); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); Bookmark bm = (Bookmark) session.load(Bookmark.class, bmId); session.delete(bm); HibernateUtil.commit(tx); } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } log.debug("delete: void"); } /** * Find by user */ @SuppressWarnings("unchecked") public static List<Bookmark> findByUser(String usrId) throws DatabaseException, RepositoryException { log.debug("findByUser({})", usrId); String qs = "from Bookmark bm where bm.user=:user order by bm.id"; Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); Query q = session.createQuery(qs); q.setString("user", usrId); List<Bookmark> ret = q.list(); for (Bookmark bm : ret) { // If user bookmark is missing, set a default NodeBase nBase = (NodeBase) session.get(NodeBase.class, bm.getNode()); if (nBase == null) { String rootPath = "/" + Repository.ROOT; String rootUuid = NodeBaseDAO.getInstance().getUuidFromPath(session, rootPath); bm.setNode(rootUuid); bm.setType(Folder.TYPE); session.save(bm); } } HibernateUtil.commit(tx); log.debug("findByUser: {}", ret); return ret; } catch (PathNotFoundException e) { HibernateUtil.rollback(tx); throw new RepositoryException(e.getMessage(), e); } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } /** * Find by pk */ public static Bookmark findByPk(long bmId) throws DatabaseException, RepositoryException { log.debug("findByPk({})", bmId); String qs = "from Bookmark bm where bm.id=:id"; Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); Query q = session.createQuery(qs); q.setLong("id", bmId); Bookmark ret = (Bookmark) q.setMaxResults(1).uniqueResult(); if (ret != null) { // If user bookmark is missing, set a default NodeBase nBase = (NodeBase) session.get(NodeBase.class, ret.getNode()); if (nBase == null) { String rootPath = "/" + Repository.ROOT; String rootUuid = NodeBaseDAO.getInstance().getUuidFromPath(session, rootPath); ret.setNode(rootUuid); ret.setType(Folder.TYPE); session.save(ret); } } HibernateUtil.commit(tx); log.debug("findByPk: {}", ret); return ret; } catch (PathNotFoundException e) { HibernateUtil.rollback(tx); throw new RepositoryException(e.getMessage(), e); } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } /** * Remove bookmarks by parent node */ public static void purgeBookmarksByNode(String nodeUuid) throws DatabaseException { log.debug("purgeBookmarksByNode({})", nodeUuid); String qs = "delete from Bookmark bm where bm.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); q.executeUpdate(); HibernateUtil.commit(tx); log.debug("purgeBookmarksByNode: void"); } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } }