@SuppressWarnings("synthetic-access")
private final ObjectCreator<Track> trackCreator = new TrackCreator();
+ /** The track object creator. */
+ @SuppressWarnings("synthetic-access")
+ private final ObjectCreator<TrackDerivative> trackDerivativeCreator = new TrackDerivativeCreator();
+
/** The style object creator. */
@SuppressWarnings("synthetic-access")
private final ObjectCreator<Style> styleCreator = new StyleCreator();
public Collection<Artist> getAllArtists() throws DatabaseException {
Query query = new Query(Type.SELECT, "ARTISTS");
query.addField(new Field("ARTISTS.*"));
- return loadProperties(database.getMultiple(query, artistCreator));
+ return loadArtistProperties(database.getMultiple(query, artistCreator));
}
/**
Query query = new Query(Type.SELECT, "ARTISTS");
query.addField(new Field("ARTISTS.*"));
query.addWhereClause(new ValueFieldWhereClause(new ValueField("ARTISTS.ID", new StringParameter(id))));
- return loadProperties(database.getSingle(query, artistCreator));
+ return loadArtistProperties(database.getSingle(query, artistCreator));
}
/**
query.addField(new Field("ARTISTS.*"));
query.addJoin(new Join(JoinType.INNER, "GROUP_ARTISTS", new Field("ARTISTS.ID"), new Field("GROUP_ARTISTS.ARTIST")));
query.addWhereClause(new ValueFieldWhereClause(new ValueField("GROUP_ARTISTS.GROUP_", new StringParameter(groupId))));
- return loadProperties(database.getMultiple(query, artistCreator));
+ return loadArtistProperties(database.getMultiple(query, artistCreator));
}
/**
query.addJoin(new Join(JoinType.INNER, "TRACK_ARTISTS", new Field("TRACK_ARTISTS.ARTIST"), new Field("ARTISTS.ID")));
query.addWhereClause(new ValueFieldWhereClause(new ValueField("TRACK_ARTISTS.TRACK", new StringParameter(trackId))));
query.addOrderField(new OrderField(new Field("TRACK_ARTISTS.DISPLAY_ORDER")));
- return loadProperties(database.getMultiple(query, artistCreator));
+ return loadArtistProperties(database.getMultiple(query, artistCreator));
}
/**
query.addValueField(new ValueField("ID", new StringParameter(id)));
query.addValueField(new ValueField("NAME", new StringParameter(name)));
database.insert(query);
- return loadProperties(getArtistById(id));
+ return loadArtistProperties(getArtistById(id));
}
/**
* @throws DatabaseException
* if a database error occurs
*/
- public Artist loadProperties(final Artist artist) throws DatabaseException {
- Query query = new Query(Type.SELECT, "ARTIST_PROPERTIES");
- query.addField(new Field("ARTIST_PROPERTIES.PROPERTY"));
- query.addField(new Field("ARTIST_PROPERTIES.VALUE"));
- query.addWhereClause(new ValueFieldWhereClause(new ValueField("ARTIST", new StringParameter(artist.getId()))));
- database.process(query, new ResultProcessor() {
-
- @Override
- public void processResult(ResultSet resultSet) throws SQLException {
- if (resultSet.isFirst()) {
- artist.getProperties().removeAll();
- }
- artist.getProperties().set(resultSet.getString("ARTIST_PROPERTIES.PROPERTY"), resultSet.getString("ARTIST_PROPERTIES.VALUE"));
- }
-
- });
- return artist;
+ public Artist loadArtistProperties(final Artist artist) throws DatabaseException {
+ return loadProperties(artist, "ARTIST_PROPERTIES", "ARTIST");
}
/**
* @throws DatabaseException
* if a database error occurs
*/
- public List<Artist> loadProperties(List<Artist> artists) throws DatabaseException {
+ public List<Artist> loadArtistProperties(List<Artist> artists) throws DatabaseException {
for (Artist artist : artists) {
- loadProperties(artist);
+ loadArtistProperties(artist);
}
return artists;
}
}
/**
+ * Returns the derivative with the given ID.
+ *
+ * @param id
+ * The ID of the derivatives to load
+ * @return The derivative with the given ID
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public TrackDerivative getTrackDerivativeById(String id) throws DatabaseException {
+ Query query = new Query(Type.SELECT, "TRACK_DERIVATIVES");
+ query.addField(new Field("TRACK_DERIVATIVES.*"));
+ query.addWhereClause(new ValueFieldWhereClause(new ValueField("TRACK_DERIVATIVES.ID", new StringParameter(id))));
+ return loadTrackDerivativeProperties(database.getSingle(query, trackDerivativeCreator));
+ }
+
+ /**
+ * Returns the derivatives for the given track.
+ *
+ * @param track
+ * The track to get the derivatives for
+ * @return The derivatives for the given track
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public Collection<TrackDerivative> getTrackDerivativesByTrack(Track track) throws DatabaseException {
+ Query query = new Query(Type.SELECT, "TRACK_DERIVATIVES");
+ query.addField(new Field("TRACK_DERIVATIVES.*"));
+ query.addWhereClause(new ValueFieldWhereClause(new ValueField("TRACK_DERIVATIVES.TRACK", new StringParameter(track.getId()))));
+ return loadTrackDerivativeProperties(database.getMultiple(query, trackDerivativeCreator));
+ }
+
+ /**
+ * Loads the properties for the given track derivative.
+ *
+ * @param trackDerivative
+ * The track derivative to load the properties for
+ * @return The track derivative with its properties loaded
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public TrackDerivative loadTrackDerivativeProperties(TrackDerivative trackDerivative) throws DatabaseException {
+ return loadProperties(trackDerivative, "TRACK_DERIVATIVE_PROPERTIES", "TRACK_DERIVATIVE");
+ }
+
+ /**
+ * Loads the properties for the given track derivatives.
+ *
+ * @param trackDerivatives
+ * The track derivatives to load the properties for
+ * @return The track derivatives with their properties loaded
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public List<TrackDerivative> loadTrackDerivativeProperties(List<TrackDerivative> trackDerivatives) throws DatabaseException {
+ for (TrackDerivative trackDerivative : trackDerivatives) {
+ loadTrackDerivativeProperties(trackDerivative);
+ }
+ return trackDerivatives;
+ }
+
+ /**
* Returns all groups the artist with the given ID belongs to.
*
* @param artistId
return database.getMultiple(query, new StringCreator("USER_OPENIDS.OPENID"));
}
+ //
+ // PRIVATE METHODS
+ //
+
+ /**
+ * Loads the properties for the given object.
+ *
+ * @param <T>
+ * The type of the object
+ * @param object
+ * The object
+ * @param table
+ * The table to load the properties from
+ * @param type
+ * The type of the object (“ARTIST,” “TRACK,” etc.)
+ * @return The object with its properties loaded
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ private <T extends Base> T loadProperties(final T object, final String table, String type) throws DatabaseException {
+ Query query = new Query(Type.SELECT, table);
+ query.addField(new Field(table + ".PROPERTY"));
+ query.addField(new Field(table + ".VALUE"));
+ query.addWhereClause(new ValueFieldWhereClause(new ValueField(type, new StringParameter(object.getId()))));
+ database.process(query, new ResultProcessor() {
+
+ @Override
+ public void processResult(ResultSet resultSet) throws SQLException {
+ if (resultSet.isFirst()) {
+ object.getProperties().removeAll();
+ }
+ object.getProperties().set(resultSet.getString(table + ".PROPERTY"), resultSet.getString(table + ".VALUE"));
+ }
+
+ });
+ return object;
+ }
+
/**
* {@link Artist} implementation that retrieves some attributes (such as
* {@link #getGroups()}, and {@link #getTracks()}) from the
});
+ /** Memoizer for the track derivatives. */
+ private final Memoizer<Void> derivativesMemoizer = new Memoizer<Void>(new Callable<Void>() {
+
+ @Override
+ public Void call() throws Exception {
+ if (!hasValue("derivatives")) {
+ getValue("derivatives", Collection.class).set(getTrackDerivativesByTrack(LazyTrack.this));
+ }
+ return null;
+ }
+
+ });
+
/** Memoizer for the related tracks. */
private final Memoizer<Void> relatedTracksMemoizer = new Memoizer<Void>(new Callable<Void>() {
* {@inheritDoc}
*/
@Override
+ public Collection<TrackDerivative> getDerivatives() {
+ derivativesMemoizer.get();
+ return super.getDerivatives();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
public Map<Relationship, Collection<Track>> getRelatedTracks() {
relatedTracksMemoizer.get();
return super.getRelatedTracks();
}
/**
+ * {@link ObjectCreator} implementation that can create
+ * {@link TrackDerivative} objects.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+ private class TrackDerivativeCreator implements ObjectCreator<TrackDerivative> {
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public TrackDerivative createObject(ResultSet resultSet) throws SQLException {
+ return new DefaultTrackDerivative(resultSet.getString("TRACK_DERIVATIVES.ID"));
+ }
+
+ }
+
+ /**
* {@link ObjectCreator} implementation that can create {@link Style}
* objects.
*