001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2009 SonarSource SA
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     */
020    package org.sonar.api.database;
021    
022    import org.apache.commons.configuration.Configuration;
023    import org.apache.commons.configuration.PropertiesConfiguration;
024    
025    import java.sql.Connection;
026    import javax.persistence.EntityManager;
027    import javax.persistence.EntityManagerFactory;
028    
029    public class InMemoryDatabaseConnector extends DriverDatabaseConnector {
030      public static final String DRIVER = "org.hsqldb.jdbcDriver";
031      public static final String URL = "jdbc:hsqldb:mem:sonar";
032      public static final String USER = "sa";
033      public static final String PASSWORD = "";
034      public static final int ISOLATION = Connection.TRANSACTION_READ_UNCOMMITTED;
035    
036      private int version;
037    
038      public InMemoryDatabaseConnector(Configuration config) {
039        super(config);
040        version = SchemaMigration.LAST_VERSION;
041      }
042    
043      public InMemoryDatabaseConnector() {
044        this(getInMemoryConfiguration(true));
045      }
046    
047      public InMemoryDatabaseConnector(int version) {
048        this(getInMemoryConfiguration(true));
049        this.version = version;
050      }
051    
052      protected static Configuration getInMemoryConfiguration(boolean createSchema) {
053        PropertiesConfiguration conf = new PropertiesConfiguration();
054        conf.setProperty(DatabaseProperties.PROP_URL, URL);
055        conf.setProperty(DatabaseProperties.PROP_DRIVER, DRIVER);
056        conf.setProperty(DatabaseProperties.PROP_USER, USER);
057        conf.setProperty(DatabaseProperties.PROP_PASSWORD, PASSWORD);
058        conf.setProperty(DatabaseProperties.PROP_ISOLATION, ISOLATION);
059        if (createSchema) {
060          conf.setProperty(DatabaseProperties.PROP_HIBERNATE_HBM2DLL, "create-drop");
061        }
062        return conf;
063      }
064    
065      @Override
066      public void start() {
067        try {
068          super.start();
069        } catch (DatabaseException ex) {
070          if (!isStarted()) {
071            throw ex;
072          }
073          setEntityManagerFactory(createEntityManagerFactory());
074          setupSchemaVersion(version);
075        }
076      }
077    
078      @Override
079      protected EntityManagerFactory createEntityManagerFactory() {
080        return super.createEntityManagerFactory();
081      }
082    
083      protected void setupSchemaVersion(int version) {
084        SchemaMigration migration = new SchemaMigration();
085        migration.setVersion(version);
086        EntityManager manager = null;
087        try {
088          manager = createEntityManager();
089          manager.getTransaction().begin();
090          manager.persist(migration);
091          manager.getTransaction().commit();
092    
093        } finally {
094          if (manager != null) {
095            manager.close();
096          }
097        }
098      }
099    }