Java tutorial
/* 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.hsql; import net.sourceforge.subsonic.Logger; import net.sourceforge.subsonic.dao.schema.Schema; import org.springframework.jdbc.core.JdbcTemplate; /** * Used for creating and evolving the database schema. * This class implements the database schema for Subsonic version 4.7. * * @author Sindre Mehus */ public class Schema47 extends Schema { private static final Logger LOG = Logger.getLogger(Schema47.class); @Override public void execute(JdbcTemplate template) { if (template.queryForInt("select count(*) from version where version = 20") == 0) { LOG.info("Updating database schema to version 20."); template.execute("insert into version values (20)"); } if (!tableExists(template, "media_file")) { LOG.info("Database table 'media_file' not found. Creating it."); template.execute("create cached table media_file (" + "id identity," + "path varchar not null," + "folder varchar," + "type varchar not null," + "format varchar," + "title varchar," + "album varchar," + "artist varchar," + "album_artist varchar," + "disc_number int," + "track_number int," + "year int," + "genre varchar," + "bit_rate int," + "variable_bit_rate boolean not null," + "duration_seconds int," + "file_size bigint," + "width int," + "height int," + "cover_art_path varchar," + "parent_path varchar," + "play_count int not null," + "last_played datetime," + "comment varchar," + "created datetime not null," + "changed datetime not null," + "last_scanned datetime not null," + "children_last_updated datetime not null," + "present boolean not null," + "version int not null," + "unique (path))"); template.execute("create index idx_media_file_path on media_file(path)"); template.execute("create index idx_media_file_parent_path on media_file(parent_path)"); template.execute("create index idx_media_file_type on media_file(type)"); template.execute("create index idx_media_file_album on media_file(album)"); template.execute("create index idx_media_file_artist on media_file(artist)"); template.execute("create index idx_media_file_album_artist on media_file(album_artist)"); template.execute("create index idx_media_file_present on media_file(present)"); template.execute("create index idx_media_file_genre on media_file(genre)"); template.execute("create index idx_media_file_play_count on media_file(play_count)"); template.execute("create index idx_media_file_created on media_file(created)"); template.execute("create index idx_media_file_last_played on media_file(last_played)"); LOG.info("Database table 'media_file' was created successfully."); } if (!tableExists(template, "artist")) { LOG.info("Database table 'artist' not found. Creating it."); template.execute("create cached table artist (" + "id identity," + "name varchar not null," + "cover_art_path varchar," + "album_count int default 0 not null," + "last_scanned datetime not null," + "present boolean not null," + "unique (name))"); template.execute("create index idx_artist_name on artist(name)"); template.execute("create index idx_artist_present on artist(present)"); LOG.info("Database table 'artist' was created successfully."); } if (!tableExists(template, "album")) { LOG.info("Database table 'album' not found. Creating it."); template.execute("create cached table album (" + "id identity," + "path varchar not null," + "name varchar not null," + "artist varchar not null," + "song_count int default 0 not null," + "duration_seconds int default 0 not null," + "cover_art_path varchar," + "play_count int default 0 not null," + "last_played datetime," + "comment varchar," + "created datetime not null," + "last_scanned datetime not null," + "present boolean not null," + "unique (artist, name))"); template.execute("create index idx_album_artist_name on album(artist, name)"); template.execute("create index idx_album_play_count on album(play_count)"); template.execute("create index idx_album_last_played on album(last_played)"); template.execute("create index idx_album_present on album(present)"); LOG.info("Database table 'album' was created successfully."); } // Added in 4.7.beta3 if (!rowExists(template, "table_name='ALBUM' and column_name='NAME' and ordinal_position=1", "information_schema.system_indexinfo")) { template.execute("create index idx_album_name on album(name)"); } if (!tableExists(template, "starred_media_file")) { LOG.info("Database table 'starred_media_file' not found. Creating it."); template.execute("create table starred_media_file (" + "id identity," + "media_file_id int not null," + "username varchar not null," + "created datetime not null," + "foreign key (media_file_id) references media_file(id) on delete cascade," + "foreign key (username) references user(username) on delete cascade," + "unique (media_file_id, username))"); template.execute( "create index idx_starred_media_file_media_file_id on starred_media_file(media_file_id)"); template.execute("create index idx_starred_media_file_username on starred_media_file(username)"); LOG.info("Database table 'starred_media_file' was created successfully."); } if (!tableExists(template, "starred_album")) { LOG.info("Database table 'starred_album' not found. Creating it."); template.execute("create table starred_album (" + "id identity," + "album_id int not null," + "username varchar not null," + "created datetime not null," + "foreign key (album_id) references album(id) on delete cascade," + "foreign key (username) references user(username) on delete cascade," + "unique (album_id, username))"); template.execute("create index idx_starred_album_album_id on starred_album(album_id)"); template.execute("create index idx_starred_album_username on starred_album(username)"); LOG.info("Database table 'starred_album' was created successfully."); } if (!tableExists(template, "starred_artist")) { LOG.info("Database table 'starred_artist' not found. Creating it."); template.execute("create table starred_artist (" + "id identity," + "artist_id int not null," + "username varchar not null," + "created datetime not null," + "foreign key (artist_id) references artist(id) on delete cascade," + "foreign key (username) references user(username) on delete cascade," + "unique (artist_id, username))"); template.execute("create index idx_starred_artist_artist_id on starred_artist(artist_id)"); template.execute("create index idx_starred_artist_username on starred_artist(username)"); LOG.info("Database table 'starred_artist' was created successfully."); } if (!tableExists(template, "playlist")) { LOG.info("Database table 'playlist' not found. Creating it."); template.execute("create table playlist (" + "id identity," + "username varchar not null," + "is_public boolean not null," + "name varchar not null," + "comment varchar," + "file_count int default 0 not null," + "duration_seconds int default 0 not null," + "created datetime not null," + "changed datetime not null," + "foreign key (username) references user(username) on delete cascade)"); LOG.info("Database table 'playlist' was created successfully."); } if (!columnExists(template, "imported_from", "playlist")) { LOG.info("Database column 'playlist.imported_from' not found. Creating it."); template.execute("alter table playlist add imported_from varchar"); LOG.info("Database column 'playlist.imported_from' was added successfully."); } if (!tableExists(template, "playlist_file")) { LOG.info("Database table 'playlist_file' not found. Creating it."); template.execute("create cached table playlist_file (" + "id identity," + "playlist_id int not null," + "media_file_id int not null," + "foreign key (playlist_id) references playlist(id) on delete cascade," + "foreign key (media_file_id) references media_file(id) on delete cascade)"); LOG.info("Database table 'playlist_file' was created successfully."); } if (!tableExists(template, "playlist_user")) { LOG.info("Database table 'playlist_user' not found. Creating it."); template.execute("create table playlist_user (" + "id identity," + "playlist_id int not null," + "username varchar not null," + "unique(playlist_id, username)," + "foreign key (playlist_id) references playlist(id) on delete cascade," + "foreign key (username) references user(username) on delete cascade)"); LOG.info("Database table 'playlist_user' was created successfully."); } if (!tableExists(template, "bookmark")) { LOG.info("Database table 'bookmark' not found. Creating it."); template.execute("create table bookmark (" + "id identity," + "media_file_id int not null," + "position_millis bigint not null," + "username varchar not null," + "comment varchar," + "created datetime not null," + "changed datetime not null," + "foreign key (media_file_id) references media_file(id) on delete cascade," + "foreign key (username) references user(username) on delete cascade," + "unique (media_file_id, username))"); template.execute("create index idx_bookmark_media_file_id on bookmark(media_file_id)"); template.execute("create index idx_bookmark_username on bookmark(username)"); LOG.info("Database table 'bookmark' was created successfully."); } } }