Java tutorial
/** * File ./src/main/java/de/lemo/dms/connectors/lemo_0_8/HibernateUtil.java * Lemo-Data-Management-Server for learning analytics. * Copyright (C) 2015 * Leonard Kappe, Andreas Pursian, Sebastian Schwarzrock, Boris Wenzlaff * * 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 3 of the License, or * 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, see <http://www.gnu.org/licenses/>. **/ /** * File ./main/java/de/lemo/dms/connectors/lemo_0_8/HibernateUtil.java * Date 2015-01-05 * Project Lemo Learning Analytics */ package de.lemo.dms.connectors.lemo_0_8; import java.util.HashMap; import java.util.Map.Entry; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; import com.google.common.collect.Maps; import de.lemo.dms.db.DBConfigObject; import de.lemo.dms.connectors.lemo_0_8.mapping.AssignmentLogLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.AssignmentLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.ChatLogLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.ChatLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.ConfigLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.CourseAssignmentLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.CourseChatLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.CourseForumLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.CourseGroupLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.CourseLogLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.CourseLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.CourseQuizLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.CourseResourceLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.CourseScormLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.CourseUserLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.CourseWikiLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.ForumLogLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.ForumLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.GroupLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.GroupUserLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.IDMappingLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.LevelAssociationLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.LevelCourseLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.LevelLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.PlatformLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.QuestionLogLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.QuestionLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.QuizLogLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.QuizLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.QuizQuestionLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.QuizUserLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.ResourceLogLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.ResourceLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.RoleLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.ScormLogLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.ScormLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.UserLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.WikiLogLMS; import de.lemo.dms.connectors.lemo_0_8.mapping.WikiLMS; /** * Startup Hibernate and provide access to the singleton SessionFactory */ public final class HibernateUtil { private HibernateUtil() { } private static HashMap<DBConfigObject, SessionFactory> sessionFactories = Maps.newHashMap(); public static SessionFactory getSessionFactory(final DBConfigObject dbconfig) { SessionFactory sessionFactory = HibernateUtil.sessionFactories.get(dbconfig); if (sessionFactory == null) { sessionFactory = HibernateUtil.createSessionFactory(dbconfig); HibernateUtil.sessionFactories.put(dbconfig, sessionFactory); } return sessionFactory; } public static void closeSessionFactory(final DBConfigObject dbconfig) { final SessionFactory sessionFactory = HibernateUtil.sessionFactories.remove(dbconfig); if (sessionFactory != null) { sessionFactory.close(); } } private static SessionFactory createSessionFactory(final DBConfigObject dbconfig) { final Configuration cfg = new Configuration(); // add properties from files for (final Entry<String, String> entry : dbconfig.getProperties().entrySet()) { cfg.setProperty(entry.getKey(), entry.getValue()); } // Meta cfg.addAnnotatedClass(ConfigLMS.class); cfg.addAnnotatedClass(IDMappingLMS.class); cfg.addAnnotatedClass(PlatformLMS.class); // Object-classes cfg.addAnnotatedClass(AssignmentLMS.class); cfg.addAnnotatedClass(ChatLMS.class); cfg.addAnnotatedClass(CourseLMS.class); cfg.addAnnotatedClass(ForumLMS.class); cfg.addAnnotatedClass(GroupLMS.class); cfg.addAnnotatedClass(QuestionLMS.class); cfg.addAnnotatedClass(QuizLMS.class); cfg.addAnnotatedClass(ResourceLMS.class); cfg.addAnnotatedClass(RoleLMS.class); cfg.addAnnotatedClass(ScormLMS.class); cfg.addAnnotatedClass(UserLMS.class); cfg.addAnnotatedClass(WikiLMS.class); cfg.addAnnotatedClass(LevelLMS.class); // Association-classes cfg.addAnnotatedClass(CourseAssignmentLMS.class); cfg.addAnnotatedClass(CourseChatLMS.class); cfg.addAnnotatedClass(CourseForumLMS.class); cfg.addAnnotatedClass(CourseGroupLMS.class); cfg.addAnnotatedClass(CourseQuizLMS.class); cfg.addAnnotatedClass(CourseResourceLMS.class); cfg.addAnnotatedClass(CourseScormLMS.class); cfg.addAnnotatedClass(CourseUserLMS.class); cfg.addAnnotatedClass(CourseWikiLMS.class); cfg.addAnnotatedClass(GroupUserLMS.class); cfg.addAnnotatedClass(QuizQuestionLMS.class); cfg.addAnnotatedClass(QuizUserLMS.class); cfg.addAnnotatedClass(LevelCourseLMS.class); cfg.addAnnotatedClass(LevelAssociationLMS.class); // Log-classes cfg.addAnnotatedClass(AssignmentLogLMS.class); cfg.addAnnotatedClass(ChatLogLMS.class); cfg.addAnnotatedClass(CourseLogLMS.class); cfg.addAnnotatedClass(ForumLogLMS.class); cfg.addAnnotatedClass(ResourceLogLMS.class); cfg.addAnnotatedClass(ScormLogLMS.class); cfg.addAnnotatedClass(QuestionLogLMS.class); cfg.addAnnotatedClass(QuizLogLMS.class); cfg.addAnnotatedClass(WikiLogLMS.class); return cfg.buildSessionFactory(); } }