import java.sql.SQLException;
import java.util.Collection;
import java.util.EnumMap;
+import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
+import java.util.Set;
import java.util.UUID;
import java.util.concurrent.Callable;
import net.pterodactylus.util.database.Join.JoinType;
import net.pterodactylus.util.database.ObjectCreator;
import net.pterodactylus.util.database.ObjectCreator.StringCreator;
+import net.pterodactylus.util.database.OrWhereClause;
import net.pterodactylus.util.database.OrderField;
import net.pterodactylus.util.database.Parameter.IntegerParameter;
import net.pterodactylus.util.database.Parameter.StringParameter;
query.addValueField(new ValueField("NAME", new StringParameter(artist.getName())));
query.addWhereClause(new ValueFieldWhereClause(new ValueField("ID", new StringParameter(artist.getId()))));
database.update(query);
+
+ /* save groups. */
+ Collection<Group> groups = artist.getGroups();
+ query = new Query(Type.DELETE, "GROUP_ARTISTS");
+ query.addWhereClause(new ValueFieldWhereClause(new ValueField("GROUP_ARTISTS.ARTIST", new StringParameter(artist.getId()))));
+ database.update(query);
+ for (Group group : groups) {
+ query = new Query(Type.INSERT, "GROUP_ARTISTS");
+ query.addValueField(new ValueField("GROUP_", new StringParameter(group.getId())));
+ query.addValueField(new ValueField("ARTIST", new StringParameter(artist.getId())));
+ database.insert(query);
+ }
+
+ /* save properties. */
saveArtistProperties(artist);
}
* if a database error occurs
*/
public List<Artist> loadArtistProperties(List<Artist> artists) throws DatabaseException {
- for (Artist artist : artists) {
- loadArtistProperties(artist);
- }
- return artists;
+ return loadProperties(artists, "ARTIST_PROPERTIES", "ARTIST");
}
/**
* if a database error occurs
*/
public List<Track> loadTrackProperties(List<Track> tracks) throws DatabaseException {
- for (Track track : tracks) {
- loadTrackProperties(track);
- }
- return tracks;
+ return loadProperties(tracks, "TRACK_PROPERTIES", "TRACK");
}
/**
query.addValueField(new ValueField("TRACK_ARTISTS.DISPLAY_ORDER", new IntegerParameter(index + 1)));
database.insert(query);
}
+
+ /* store party links. */
+ Collection<Party> parties = track.getParties(); /* prefetch parties. */
+ query = new Query(Type.DELETE, "PARTY_TRACKS");
+ query.addWhereClause(new ValueFieldWhereClause(new ValueField("PARTY_TRACKS.TRACK", new StringParameter(track.getId()))));
+ database.update(query);
+ for (Party party : parties) {
+ query = new Query(Type.INSERT, "PARTY_TRACKS");
+ query.addValueField(new ValueField("PARTY_TRACKS.TRACK", new StringParameter(track.getId())));
+ query.addValueField(new ValueField("PARTY_TRACKS.PARTY", new StringParameter(party.getId())));
+ database.insert(query);
+ }
+
/* store properties. */
saveProperties(track.getProperties(), "TRACK_PROPERTIES", "TRACK", track.getId());
}
* if a database error occurs
*/
public List<TrackDerivative> loadTrackDerivativeProperties(List<TrackDerivative> trackDerivatives) throws DatabaseException {
- for (TrackDerivative trackDerivative : trackDerivatives) {
- loadTrackDerivativeProperties(trackDerivative);
- }
- return trackDerivatives;
+ return loadProperties(trackDerivatives, "TRACK_DERIVATIVE_PROPERTIES", "TRACK_DERIVATIVE");
}
/**
}
/**
+ * Returns all groups.
+ *
+ * @return All groups
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public Collection<Group> getAllGroups() throws DatabaseException {
+ Query query = new Query(Type.SELECT, "GROUPS");
+ query.addField(new Field("GROUPS.*"));
+ return loadGroupProperties(database.getMultiple(query, groupCreator));
+ }
+
+ /**
+ * Returns the group with the given ID.
+ *
+ * @param groupId
+ * The ID of the group
+ * @return The group with the given ID, or {@code null} if no such group
+ * exists
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public Group getGroupById(String groupId) throws DatabaseException {
+ Query query = new Query(Type.SELECT, "GROUPS");
+ query.addField(new Field("GROUPS.*"));
+ query.addWhereClause(new ValueFieldWhereClause(new ValueField("GROUPS.ID", new StringParameter(groupId))));
+ return loadGroupProperties(database.getSingle(query, groupCreator));
+ }
+
+ /**
* Returns all groups the artist with the given ID belongs to.
*
* @param artistId
}
/**
+ * Loads the properties of the given group.
+ *
+ * @param group
+ * The group to load the properties for
+ * @return The group with its properties loaded
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public Group loadGroupProperties(Group group) throws DatabaseException {
+ return loadProperties(group, "GROUP_PROPERTIES", "GROUP_ID");
+ }
+
+ /**
+ * Loads the properties of the given groups.
+ *
+ * @param groups
+ * The groups to load the properties for
+ * @return The groups with their properties loaded
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public Collection<Group> loadGroupProperties(List<Group> groups) throws DatabaseException {
+ return loadProperties(groups, "GROUP_PROPERTIES", "GROUP_ID");
+ }
+
+ /**
+ * Creates a group with the given name.
+ *
+ * @param name
+ * The name of the new group
+ * @return The new group
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public Group createGroup(String name) throws DatabaseException {
+ Query query = new Query(Type.INSERT, "GROUPS");
+ String id = UUID.randomUUID().toString();
+ query.addValueField(new ValueField("ID", new StringParameter(id)));
+ query.addValueField(new ValueField("NAME", new StringParameter(name)));
+ database.insert(query);
+ return getGroupById(id);
+ }
+
+ /**
+ * Saves the given group.
+ *
+ * @param group
+ * The group to save
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public void saveGroup(Group group) throws DatabaseException {
+ Query query = new Query(Type.UPDATE, "GROUPS");
+ query.addValueField(new ValueField("NAME", new StringParameter(group.getName())));
+ query.addWhereClause(new ValueFieldWhereClause(new ValueField("ID", new StringParameter(group.getId()))));
+ database.update(query);
+ /* save properties. */
+ saveGroupProperties(group);
+ }
+
+ /**
+ * Saves the properties of the given group.
+ *
+ * @param group
+ * The group whose properties to save
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public void saveGroupProperties(Group group) throws DatabaseException {
+ saveProperties(group.getProperties(), "GROUP_PROPERTIES", "GROUP_ID", group.getId());
+ }
+
+ /**
* Returns all styles for the track with the given ID.
*
* @param trackId
}
/**
+ * Returns all parties that the track with the given ID was released at.
+ *
+ * @param trackId
+ * The ID of the track
+ * @return All parties the track was released at
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public Collection<Party> getPartiesByTrackId(String trackId) throws DatabaseException {
+ Query query = new Query(Type.SELECT, "PARTIES");
+ query.addField(new Field("PARTIES.*"));
+ query.addJoin(new Join(JoinType.INNER, "PARTY_TRACKS", new Field("PARTY_TRACKS.PARTY"), new Field("PARTIES.ID")));
+ query.addWhereClause(new ValueFieldWhereClause(new ValueField("PARTY_TRACKS.TRACK", new StringParameter(trackId))));
+ return loadPartyProperties(database.getMultiple(query, partyCreator));
+ }
+
+ /**
+ * Returns the party with the given ID.
+ *
+ * @param partyId
+ * The ID of the party
+ * @return The party with the given ID
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public Party getPartyById(String partyId) throws DatabaseException {
+ Query query = new Query(Type.SELECT, "PARTIES");
+ query.addField(new Field("PARTIES.*"));
+ query.addWhereClause(new ValueFieldWhereClause(new ValueField("PARTIES.ID", new StringParameter(partyId))));
+ return loadPartyProperties(database.getSingle(query, partyCreator));
+ }
+
+ /**
+ * Loads the properties of the given party.
+ *
+ * @param party
+ * The party to load the properties for
+ * @return The party with its properties loaded
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public Party loadPartyProperties(Party party) throws DatabaseException {
+ return loadProperties(party, "PARTY_PROPERTIES", "PARTY");
+ }
+
+ /**
+ * Loads the properties of the given parties.
+ *
+ * @param parties
+ * The parties to load the properties for
+ * @return The parties with their properties loaded
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public List<Party> loadPartyProperties(List<Party> parties) throws DatabaseException {
+ return loadProperties(parties, "PARTY_PROPERTIES", "PARTY");
+ }
+
+ /**
+ * Saves the given party.
+ *
+ * @param party
+ * The party to save
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public void saveParty(Party party) throws DatabaseException {
+ Query query = new Query(Type.UPDATE, "PARTIES");
+ query.addValueField(new ValueField("NAME", new StringParameter(party.getName())));
+ query.addWhereClause(new ValueFieldWhereClause(new ValueField("ID", new StringParameter(party.getId()))));
+ database.update(query);
+ savePartyProperties(party);
+ }
+
+ /**
+ * Saves the properties of the given party.
+ *
+ * @param party
+ * The party whose properties to save
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public void savePartyProperties(Party party) throws DatabaseException {
+ saveProperties(party.getProperties(), "PARTY_PROPERTIES", "PARTY", party.getId());
+ }
+
+ /**
+ * Creates a new party with the given name.
+ *
+ * @param name
+ * The name of the party
+ * @return The new party
+ * @throws DatabaseException
+ * if a database error occurs
+ */
+ public Party createParty(String name) throws DatabaseException {
+ Query query = new Query(Type.INSERT, "PARTIES");
+ String id = UUID.randomUUID().toString();
+ query.addValueField(new ValueField("ID", new StringParameter(id)));
+ query.addValueField(new ValueField("NAME", new StringParameter(name)));
+ database.insert(query);
+ return getPartyById(id);
+ }
+
+ /**
* Returns the user with the given name.
*
* @param username
* if a database error occurs
*/
private <T extends Base> T loadProperties(final T object, final String table, String type) throws DatabaseException {
+ if (object == null) {
+ return null;
+ }
Query query = new Query(Type.SELECT, table);
query.addField(new Field(table + ".PROPERTY"));
query.addField(new Field(table + ".VALUE"));
}
/**
+ * Loads the properties for the given objects.
+ *
+ * @param <T>
+ * The type of the object
+ * @param objects
+ * The objects
+ * @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> List<T> loadProperties(List<T> objects, final String table, final String type) throws DatabaseException {
+ final Map<String, T> objectMap = new HashMap<String, T>();
+ final Set<String> firstObjects = new HashSet<String>();
+ for (T object : objects) {
+ objectMap.put(object.getId(), object);
+ firstObjects.add(object.getId());
+ }
+ Query query = new Query(Type.SELECT, table);
+ query.addField(new Field(table + "." + type));
+ query.addField(new Field(table + ".PROPERTY"));
+ query.addField(new Field(table + ".VALUE"));
+ OrWhereClause whereClause = new OrWhereClause();
+ for (T object : objects) {
+ whereClause.add(new ValueFieldWhereClause(new ValueField(type, new StringParameter(object.getId()))));
+ }
+ query.addWhereClause(whereClause);
+ database.process(query, new ResultProcessor() {
+
+ @Override
+ public void processResult(ResultSet resultSet) throws SQLException {
+ String id = resultSet.getString(table + "." + type);
+ T object = objectMap.get(id);
+ if (firstObjects.remove(id)) {
+ object.getProperties().removeAll();
+ }
+ object.getProperties().set(resultSet.getString(table + ".PROPERTY"), resultSet.getString(table + ".VALUE"));
+ }
+
+ });
+ return objects;
+ }
+
+ /**
* {@link Artist} implementation that retrieves some attributes (such as
* {@link #getGroups()}, and {@link #getTracks()}) from the
* {@link DataManager} on demand.
*/
@Override
public Group createObject(ResultSet resultSet) throws SQLException {
- return new LazyGroup(resultSet.getString("GROUPS.ID")).setName(resultSet.getString("GROUPS.NAME")).setUrl(resultSet.getString("GROUPS.URL"));
+ return new LazyGroup(resultSet.getString("GROUPS.ID")).setName(resultSet.getString("GROUPS.NAME"));
}
}
return super.getRelatedTracks();
}
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public Collection<Party> getParties() {
+ if (!hasValue("parties")) {
+ try {
+ getValue("parties", Collection.class).set(getPartiesByTrackId(getId()));
+ } catch (DatabaseException de1) {
+ throw new RuntimeException("Could not load Parties for Track " + getId() + ".", de1);
+ }
+ }
+ return super.getParties();
+ }
+
}
/**
projects / demoscenemusic.git / blobdiff