org.sonar.jpa.session.MemoryDatabaseConnector.java Source code

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Here is the source code for org.sonar.jpa.session.MemoryDatabaseConnector.java

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/*
 * Sonar, open source software quality management tool.
 * Copyright (C) 2008-2011 SonarSource
 * mailto:contact AT sonarsource DOT com
 *
 * Sonar is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * Sonar 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with Sonar; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package org.sonar.jpa.session;

import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.sonar.api.database.DatabaseProperties;
import org.sonar.jpa.entity.SchemaMigration;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import java.sql.Connection;

public class MemoryDatabaseConnector extends DriverDatabaseConnector {
    public static final String DRIVER = "org.hsqldb.jdbcDriver";
    public static final String URL = "jdbc:hsqldb:mem:sonar";
    public static final String USER = "sa";
    public static final String PASSWORD = "";
    public static final int ISOLATION = Connection.TRANSACTION_READ_UNCOMMITTED;

    private int version;

    public MemoryDatabaseConnector(Configuration config) {
        super(config);
        version = SchemaMigration.LAST_VERSION;
    }

    public MemoryDatabaseConnector() {
        this(getInMemoryConfiguration(true));
    }

    public MemoryDatabaseConnector(int version) {
        this(getInMemoryConfiguration(true));
        this.version = version;
    }

    protected static Configuration getInMemoryConfiguration(boolean createSchema) {
        PropertiesConfiguration conf = new PropertiesConfiguration();
        conf.setProperty(DatabaseProperties.PROP_URL, URL);
        conf.setProperty(DatabaseProperties.PROP_DRIVER, DRIVER);
        conf.setProperty(DatabaseProperties.PROP_USER, USER);
        conf.setProperty(DatabaseProperties.PROP_PASSWORD, PASSWORD);
        conf.setProperty(DatabaseProperties.PROP_ISOLATION, ISOLATION);
        if (createSchema) {
            conf.setProperty(DatabaseProperties.PROP_HIBERNATE_HBM2DLL, "create-drop");
        }
        return conf;
    }

    @Override
    public void start() {
        try {
            super.start();
        } catch (DatabaseException ex) {
            if (!isStarted()) {
                throw ex;
            }
            setEntityManagerFactory(createEntityManagerFactory());
            setupSchemaVersion(version);
        }
    }

    @Override
    protected EntityManagerFactory createEntityManagerFactory() {
        return super.createEntityManagerFactory();
    }

    protected void setupSchemaVersion(int version) {
        SchemaMigration migration = new SchemaMigration();
        migration.setVersion(version);
        EntityManager manager = null;
        try {
            manager = createEntityManager();
            manager.getTransaction().begin();
            manager.persist(migration);
            manager.getTransaction().commit();

        } finally {
            if (manager != null) {
                manager.close();
            }
        }
    }
}