Schema29.java

/*
 This file is part of Subsonic.

 Subsonic 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
 (at your option) any later version.

 Subsonic 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 Subsonic.  If not, see <http://www.gnu.org/licenses/>.

 Copyright 2009 (C) Sindre Mehus
 */
package net.sourceforge.subsonic.dao.schema;

import net.sourceforge.subsonic.*;
import org.springframework.jdbc.core.*;

/**
 * Used for creating and evolving the database schema.
 * This class implementes the database schema for Subsonic version 2.9.
 *
 * @author Sindre Mehus
 */
public class Schema29 extends Schema {
    private static final Logger LOG = Logger.getLogger(Schema29.class);

    public void execute(JdbcTemplate template) {

        if (template.queryForInt("select count(*) from version where version = 5") == 0) {
            LOG.info("Updating database schema to version 5.");
            template.execute("insert into version values (5)");
        }

        if (!tableExists(template, "user_rating")) {
            LOG.info("Database table 'user_rating' not found.  Creating it.");
            template.execute("create table user_rating (" +
                             "username varchar not null," +
                             "path varchar not null," +
                             "rating double not null," +
                             "primary key (username, path)," +
                             "foreign key (username) references user(username) on delete cascade)");
            LOG.info("Database table 'user_rating' was created successfully.");

            template.execute("insert into user_rating select 'admin', path, rating from music_file_info " +
                             "where rating is not null and rating > 0");
            LOG.info("Migrated data from 'music_file_info' to 'user_rating'.");
        }
    }
}