X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fdemoscenemusic%2Fdata%2FDataManager.java;h=f3d35788f2cfaee5af00bef82ef0c4a78227debb;hb=51130ce0f519aa3ac648999413e76558679ee182;hp=967faa5fecd042ee0c6bb53f40df485e2a923943;hpb=747a5afddade17479a3d0e951c1e5ce51a3b7950;p=demoscenemusic.git

diff --git a/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java b/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java
index 967faa5..f3d3578 100644
--- a/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java
+++ b/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java
@@ -73,6 +73,10 @@ public class DataManager {
 	@SuppressWarnings("synthetic-access")
 	private final ObjectCreator<Style> styleCreator = new StyleCreator();
 
+	/** The party object creator. */
+	@SuppressWarnings("synthetic-access")
+	private final ObjectCreator<Party> partyCreator = new PartyCreator();
+
 	/** The {@link User} object creator. */
 	@SuppressWarnings("synthetic-access")
 	private final ObjectCreator<User> userCreator = new UserCreator();
@@ -364,6 +368,23 @@ public class DataManager {
 	}
 
 	/**
+	 * Returns all tracks that were released at the party with the given ID.
+	 *
+	 * @param partyId
+	 *            The ID of the party
+	 * @return All tracks that were released at the given party
+	 * @throws DatabaseException
+	 *             if a database error occurs
+	 */
+	public Collection<Track> getTracksByParty(String partyId) throws DatabaseException {
+		Query query = new Query(Type.SELECT, "TRACKS");
+		query.addField(new Field("TRACKS.*"));
+		query.addJoin(new Join(JoinType.INNER, "PARTY_TRACKS", new Field("PARTY_TRACKS.TRACK"), new Field("TRACKS.ID")));
+		query.addWhereClause(new ValueFieldWhereClause(new ValueField("PARTY_TRACKS.PARTY", new StringParameter(partyId))));
+		return loadTrackProperties(database.getMultiple(query, trackCreator));
+	}
+
+	/**
 	 * Loads the properties for the given track.
 	 *
 	 * @param track
@@ -436,6 +457,19 @@ public class DataManager {
 			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());
 	}
@@ -584,6 +618,127 @@ public class DataManager {
 	}
 
 	/**
+	 * Returns all parties.
+	 *
+	 * @return All parties
+	 * @throws DatabaseException
+	 *             if a database error occurs
+	 */
+	public Collection<Party> getAllParties() throws DatabaseException {
+		Query query = new Query(Type.SELECT, "PARTIES");
+		query.addField(new Field("PARTIES.*"));
+		return loadPartyProperties(database.getMultiple(query, partyCreator));
+	}
+
+	/**
+	 * 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 {
+		for (Party party : parties) {
+			loadPartyProperties(party);
+		}
+		return parties;
+	}
+
+	/**
+	 * 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
@@ -653,6 +808,9 @@ public class DataManager {
 	 *             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"));
@@ -956,6 +1114,21 @@ public class DataManager {
 			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();
+		}
+
 	}
 
 	/**
@@ -1014,6 +1187,63 @@ public class DataManager {
 	}
 
 	/**
+	 * {@link Party} implementation that loads additional information only on
+	 * demand.
+	 *
+	 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+	 */
+	private class LazyParty extends DefaultParty {
+
+		/**
+		 * Creates a new party.
+		 *
+		 * @param id
+		 *            The ID of the party
+		 */
+		public LazyParty(String id) {
+			super(id);
+		}
+
+		//
+		// PARTY METHODS
+		//
+
+		/**
+		 * {@inheritDoc}
+		 */
+		@Override
+		public Collection<Track> getReleases() {
+			if (!hasValue("releases")) {
+				try {
+					getValue("releases", Collection.class).set(getTracksByParty(getId()));
+				} catch (DatabaseException de1) {
+					throw new RuntimeException("Could not loaded Tracks for Party " + getId() + ".", de1);
+				}
+			}
+			return super.getReleases();
+		}
+
+	}
+
+	/**
+	 * {@link ObjectCreator} implementation that can create {@link Party}
+	 * objects.
+	 *
+	 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+	 */
+	private class PartyCreator implements ObjectCreator<Party> {
+
+		/**
+		 * {@inheritDoc}
+		 */
+		@Override
+		public Party createObject(ResultSet resultSet) throws SQLException {
+			return new LazyParty(resultSet.getString("PARTIES.ID")).setName(resultSet.getString("PARTIES.NAME"));
+		}
+
+	}
+
+	/**
 	 * {@link User} implementation that retrieves some attributes (such as
 	 * {@link #getOpenIds()}) from the {@link DataManager} on demand.
 	 *