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.sonar.api.database.DatabaseSession;
023
024public class ThreadLocalDatabaseSessionFactory implements DatabaseSessionFactory {
025
026  private final ThreadLocal<JpaDatabaseSession> threadSession = new ThreadLocal<JpaDatabaseSession>();
027  private final DatabaseConnector connector;
028
029  public ThreadLocalDatabaseSessionFactory(DatabaseConnector connector) {
030    this.connector = connector;
031  }
032
033  public DatabaseSession getSession() {
034    JpaDatabaseSession session = threadSession.get();
035    if (session == null) {
036      session = new JpaDatabaseSession(connector);
037      session.start();
038      threadSession.set(session);
039    }
040    return session;
041  }
042
043  public void clear() {
044    JpaDatabaseSession session = threadSession.get();
045    if (session != null) {
046      session.stop();
047    }
048    threadSession.set(null);
049  }
050
051  public void stop() {
052    clear();
053  }
054}