001/* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2012 SonarSource 004 * mailto:contact AT sonarsource DOT com 005 * 006 * Sonar is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 3 of the License, or (at your option) any later version. 010 * 011 * Sonar is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public 017 * License along with Sonar; if not, write to the Free Software 018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02 019 */ 020package org.sonar.jpa.session; 021 022import org.slf4j.Logger; 023import org.slf4j.LoggerFactory; 024import org.sonar.core.persistence.Database; 025import org.sonar.core.persistence.DatabaseVersion; 026import org.sonar.core.persistence.dialect.Dialect; 027 028import javax.persistence.EntityManager; 029import javax.persistence.EntityManagerFactory; 030import javax.persistence.Persistence; 031import java.util.Map; 032import java.util.Properties; 033 034public abstract class AbstractDatabaseConnector implements DatabaseConnector { 035 protected static final Logger LOG = LoggerFactory.getLogger(AbstractDatabaseConnector.class); 036 037 protected Database database; 038 private EntityManagerFactory factory = null; 039 040 protected AbstractDatabaseConnector(Database database) { 041 this.database = database; 042 } 043 044 public void start() { 045 LOG.info("Initializing Hibernate"); 046 factory = createEntityManagerFactory(); 047 048 } 049 050 public void stop() { 051 if (factory != null && factory.isOpen()) { 052 factory.close(); 053 factory = null; 054 } 055 database = null; 056 } 057 058 public EntityManagerFactory getEntityManagerFactory() { 059 return factory; 060 } 061 062 protected EntityManagerFactory createEntityManagerFactory() { 063 // other settings are stored into /META-INF/persistence.xml 064 Properties props = database.getHibernateProperties(); 065 logHibernateSettings(props); 066 return Persistence.createEntityManagerFactory("sonar", props); 067 } 068 069 private void logHibernateSettings(Properties props) { 070 if (LOG.isDebugEnabled()) { 071 for (Map.Entry<Object, Object> entry : props.entrySet()) { 072 LOG.debug(entry.getKey() + ": " + entry.getValue()); 073 } 074 } 075 } 076 077 public EntityManager createEntityManager() { 078 return factory.createEntityManager(); 079 } 080 081 public final int getDatabaseVersion() { 082 throw new UnsupportedOperationException("Moved to " + DatabaseVersion.class.getCanonicalName()); 083 } 084 085 public final Dialect getDialect() { 086 return database.getDialect(); 087 } 088}