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.ArrayList; import java.util.List; import java.util.StringTokenizer; import org.hibernate.Hibernate; 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.google.gson.Gson; import com.ikon.bean.ConfigStoredOption; import com.ikon.bean.ConfigStoredSelect; import com.ikon.core.DatabaseException; import com.ikon.dao.bean.Config; public class ConfigDAO { private static Logger log = LoggerFactory.getLogger(ConfigDAO.class); private ConfigDAO() { } /** * Create activity */ public static void create(Config cfg) throws DatabaseException { Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); session.save(cfg); HibernateUtil.commit(tx); } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } /** * Update */ public static void update(Config cfg) throws DatabaseException { log.debug("update({})", cfg); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); session.update(cfg); 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(String key) throws DatabaseException { log.debug("delete({})", key); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); Config mt = (Config) session.load(Config.class, key); session.delete(mt); 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 pk */ public static Config findByPk(String key) throws DatabaseException { log.debug("findByPk({})", key); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); Config ret = (Config) session.load(Config.class, key); Hibernate.initialize(ret); HibernateUtil.commit(tx); log.debug("findByPk: {}", ret); return ret; } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } /** * Find by pk with a default value */ private static String getProperty(String key, String defaultValue, String type) throws DatabaseException { log.debug("getProperty({}, {}, {})", new Object[] { key, defaultValue, type }); Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); Config ret = (Config) session.get(Config.class, key); if (ret == null) { ret = new Config(); ret.setKey(key); ret.setType(type); ret.setValue(defaultValue); session.save(ret); } else if (ret.getValue() == null) { // For Oracle '' are like NULL ret.setValue(""); } HibernateUtil.commit(tx); log.debug("getProperty: {}", ret.getValue()); return ret.getValue(); } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } /** * Find by pk with a default value */ public static String getHidden(String key, String defaultValue) throws DatabaseException { return getProperty(key, defaultValue, Config.HIDDEN); } /** * Find by pk with a default value */ public static String getString(String key, String defaultValue) throws DatabaseException { return getProperty(key, defaultValue, Config.STRING); } /** * Find by pk with a default value */ public static String getText(String key, String defaultValue) throws DatabaseException { return getProperty(key, defaultValue, Config.TEXT); } /** * Find by pk with a default value */ public static boolean getBoolean(String key, boolean defaultValue) throws DatabaseException { return "true".equalsIgnoreCase(getProperty(key, Boolean.toString(defaultValue), Config.BOOLEAN)); } /** * Find by pk with a default value */ public static int getInteger(String key, int defaultValue) throws DatabaseException { return Integer.parseInt(getProperty(key, Integer.toString(defaultValue), Config.INTEGER)); } /** * Find by pk with a default value */ public static long getLong(String key, long defaultValue) throws DatabaseException { return Long.parseLong(getProperty(key, Long.toString(defaultValue), Config.LONG)); } /** * Find by pk with a default value */ public static void initSelect(String key, ConfigStoredSelect value) throws DatabaseException { Config cfg = new Config(); cfg.setKey(key); cfg.setValue(new Gson().toJson(value)); cfg.setType(Config.SELECT); delete(key); create(cfg); } /** * Find by pk with a default value */ public static ConfigStoredSelect getSelect(String key) throws DatabaseException { String dbValue = getProperty(key, null, Config.SELECT); if (dbValue == null || dbValue.equals("")) { return null; } else { return new Gson().fromJson(dbValue, ConfigStoredSelect.class); } } /** * Find by pk with a default value */ public static String getSelectedOption(String key, String value) throws DatabaseException { StringTokenizer st = new StringTokenizer(value, "|"); ConfigStoredSelect stSelect = new ConfigStoredSelect(); boolean selected = false; while (st.hasMoreTokens()) { String tk = st.nextToken().trim(); ConfigStoredOption stOption = new ConfigStoredOption(); if (tk.startsWith(ConfigStoredOption.SELECTED)) { stOption.setName(tk.substring(1)); stOption.setValue(tk.substring(1)); stOption.setSelected(true); selected = true; } else { stOption.setName(tk); stOption.setValue(tk); stOption.setSelected(false); } stSelect.getOptions().add(stOption); } // Set first option as default if (!selected && stSelect.getOptions().size() > 0) { stSelect.getOptions().get(0).setSelected(true); } String dbValue = getProperty(key, new Gson().toJson(stSelect), Config.SELECT); ConfigStoredSelect dbSelect = new Gson().fromJson(dbValue, ConfigStoredSelect.class); for (ConfigStoredOption option : dbSelect.getOptions()) { if (option.isSelected()) { return option.getValue(); } } return ""; } /** * Find by pk with a default value */ public static List<String> getList(String key, String defaultValue) throws DatabaseException { List<String> list = new ArrayList<String>(); String dbValue = getProperty(key, defaultValue, Config.LIST); StringTokenizer st = new StringTokenizer(dbValue, "\t\n\r\f"); while (st.hasMoreTokens()) { String tk = st.nextToken().trim(); if (tk != null && !tk.equals("")) { list.add(tk); } } return list; } /** * Find by pk */ @SuppressWarnings("unchecked") public static List<Config> findAll() throws DatabaseException { log.debug("findAll()"); String qs = "from Config cfg order by cfg.key"; Session session = null; Transaction tx = null; try { session = HibernateUtil.getSessionFactory().openSession(); tx = session.beginTransaction(); Query q = session.createQuery(qs); List<Config> ret = q.list(); HibernateUtil.commit(tx); log.debug("findAll: {}", ret); return ret; } catch (HibernateException e) { HibernateUtil.rollback(tx); throw new DatabaseException(e.getMessage(), e); } finally { HibernateUtil.close(session); } } }