X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fdemoscenemusic%2Fdata%2FDataManager.java;h=928eebcf2223d0dfda7910443554792f8ef89494;hb=f533deea6ecc3f1bd59ca8926c31dd7667ee572a;hp=56d5cea314bd6b46a66982d603903ad6e8f51adf;hpb=4afa9c06e910ed4d8b005fda571d0e7c62822317;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 56d5cea..928eebc 100644
--- a/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java
+++ b/src/main/java/net/pterodactylus/demoscenemusic/data/DataManager.java
@@ -19,16 +19,24 @@ package net.pterodactylus.demoscenemusic.data;
 
 import java.sql.ResultSet;
 import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.List;
+import java.util.concurrent.Callable;
 
+import net.pterodactylus.util.collection.Memoizer;
 import net.pterodactylus.util.database.Database;
 import net.pterodactylus.util.database.DatabaseException;
 import net.pterodactylus.util.database.Field;
 import net.pterodactylus.util.database.Join;
 import net.pterodactylus.util.database.Join.JoinType;
-import net.pterodactylus.util.database.ObjectCreator;
+import net.pterodactylus.util.database.OrderField;
+import net.pterodactylus.util.database.OrderField.Order;
 import net.pterodactylus.util.database.Parameter.StringParameter;
 import net.pterodactylus.util.database.Query;
 import net.pterodactylus.util.database.Query.Type;
+import net.pterodactylus.util.database.ResultProcessor;
 import net.pterodactylus.util.database.ValueField;
 import net.pterodactylus.util.database.ValueFieldWhereClause;
 
@@ -41,80 +49,158 @@ public class DataManager {
 
 	private final Database database;
 
-	private final TrackLoader trackLoader = new TrackLoader();
-
-	private final ArtistLoader artistLoader = new ArtistLoader();
-
-	private final StyleLoader styleLoader = new StyleLoader();
-
 	public DataManager(Database database) {
 		this.database = database;
 	}
 
+	public Collection<Artist> getAllArtists() throws DatabaseException {
+		Query query = new Query(Type.SELECT, "ARTISTS");
+		query.addField(new Field("ARTISTS.*"));
+		query.addField(new Field("GROUP_ARTISTS.*"));
+		query.addField(new Field("GROUPS.*"));
+		query.addJoin(new Join(JoinType.INNER, "GROUP_ARTISTS", new Field("ARTISTS.ID"), new Field("GROUP_ARTISTS.ARTIST")));
+		query.addJoin(new Join(JoinType.INNER, "GROUPS", new Field("GROUP_ARTISTS.GROUP_"), new Field("GROUPS.ID")));
+		query.addOrderField(new OrderField(new Field("ARTISTS.ID")));
+		ArtistLoader artistLoader = new ArtistLoader();
+		database.process(query, artistLoader);
+		return artistLoader.all();
+	}
+
+	public Artist getArtistById(String id) throws DatabaseException {
+		Query query = new Query(Type.SELECT, "ARTISTS");
+		query.addField(new Field("ARTISTS.*"));
+		query.addField(new Field("GROUP_ARTISTS.*"));
+		query.addField(new Field("GROUPS.*"));
+		query.addJoin(new Join(JoinType.INNER, "GROUP_ARTISTS", new Field("ARTISTS.ID"), new Field("GROUP_ARTISTS.ARTIST")));
+		query.addJoin(new Join(JoinType.INNER, "GROUPS", new Field("GROUP_ARTISTS.GROUP_"), new Field("GROUPS.ID")));
+		query.addWhereClause(new ValueFieldWhereClause(new ValueField("ARTISTS.ID", new StringParameter(id))));
+		query.addOrderField(new OrderField(new Field("ARTISTS.ID")));
+		ArtistLoader artistLoader = new ArtistLoader();
+		database.process(query, artistLoader);
+		return artistLoader.get();
+	}
+
 	public Track trackById(String id) throws DatabaseException {
 		Query query = new Query(Type.SELECT, "TRACKS");
 		query.addField(new Field("TRACKS.*"));
+		query.addField(new Field("TRACK_ARTISTS.*"));
 		query.addField(new Field("ARTISTS.*"));
+		query.addField(new Field("TRACK_STYLES.*"));
 		query.addField(new Field("STYLES.*"));
-		query.addJoin(new Join(JoinType.INNER, "ARTISTS", new Field("TRACKS.ARTIST"), new Field("ARTISTS.ID")));
-		query.addJoin(new Join(JoinType.INNER, "STYLES", new Field("TRACKS.STYLE"), new Field("STYLES.ID")));
-		query.addWhereClause(new ValueFieldWhereClause(new ValueField("ID", new StringParameter(id))));
-		return database.getSingle(query, trackLoader);
+		query.addJoin(new Join(JoinType.INNER, "TRACK_ARTISTS", new Field("TRACKS.ID"), new Field("TRACK_ARTISTS.TRACK")));
+		query.addJoin(new Join(JoinType.INNER, "ARTISTS", new Field("TRACK_ARTISTS.ARTIST"), new Field("ARTISTS.ID")));
+		query.addJoin(new Join(JoinType.INNER, "TRACK_STYLES", new Field("TRACKS.ID"), new Field("TRACK_STYLES.TRACK")));
+		query.addJoin(new Join(JoinType.INNER, "STYLES", new Field("TRACK_STYLES.STYLE"), new Field("STYLES.ID")));
+		query.addWhereClause(new ValueFieldWhereClause(new ValueField("TRACKS.ID", new StringParameter(id))));
+		query.addOrderField(new OrderField(new Field("TRACKS.ID"), Order.ASCENDING));
+		query.addOrderField(new OrderField(new Field("TRACK_ARTISTS.DISPLAY_ORDER"), Order.ASCENDING));
+		TrackLoader trackLoader = new TrackLoader();
+		database.process(query, trackLoader);
+		return trackLoader.get();
 	}
 
-	private class TrackLoader implements ObjectCreator<Track> {
+	public Collection<Track> getTracksByArtist(String artistId) throws DatabaseException {
+		Query query = new Query(Type.SELECT, "TRACKS");
+		query.addField(new Field("TRACKS.*"));
+		query.addField(new Field("TRACK_ARTISTS.*"));
+		query.addField(new Field("ARTISTS.*"));
+		query.addField(new Field("TRACK_STYLES.*"));
+		query.addField(new Field("STYLES.*"));
+		query.addJoin(new Join(JoinType.INNER, "TRACK_ARTISTS", new Field("TRACKS.ID"), new Field("TRACK_ARTISTS.TRACK")));
+		query.addJoin(new Join(JoinType.INNER, "ARTISTS", new Field("TRACK_ARTISTS.ARTIST"), new Field("ARTISTS.ID")));
+		query.addJoin(new Join(JoinType.INNER, "TRACK_STYLES", new Field("TRACKS.ID"), new Field("TRACK_STYLES.TRACK")));
+		query.addJoin(new Join(JoinType.INNER, "STYLES", new Field("TRACK_STYLES.STYLE"), new Field("STYLES.ID")));
+		query.addWhereClause(new ValueFieldWhereClause(new ValueField("ARTISTS.ID", new StringParameter(artistId))));
+		query.addOrderField(new OrderField(new Field("TRACKS.ID"), Order.ASCENDING));
+		query.addOrderField(new OrderField(new Field("TRACK_ARTISTS.DISPLAY_ORDER"), Order.ASCENDING));
+		TrackLoader trackLoader = new TrackLoader();
+		database.process(query, trackLoader);
+		return trackLoader.all();
+	}
 
-		/**
-		 * {@inheritDoc}
-		 */
-		public Track createObject(ResultSet resultSet) throws SQLException {
-			return new AbstractTrack(resultSet.getString("TRACKS.ID")) {
+	private class TrackLoader implements ResultProcessor {
 
-				public void save() {
-					if (!dirty()) {
-						return;
-					}
-				}
+		private final List<Track> loadedTracks = new ArrayList<Track>();
+		private Track track;
 
-			}.name(resultSet.getString("TRACKS.NAME")).style(styleLoader.createObject(resultSet)).artist(artistLoader.createObject(resultSet));
+		public Track get() {
+			return loadedTracks.isEmpty() ? null : loadedTracks.get(0);
 		}
 
-	}
-
-	private class ArtistLoader implements ObjectCreator<Artist> {
+		public List<Track> all() {
+			return loadedTracks;
+		}
 
 		/**
 		 * {@inheritDoc}
 		 */
-		public Artist createObject(ResultSet resultSet) throws SQLException {
-			return new AbstractArtist(resultSet.getString("ARTISTS.ID")) {
+		public void processResult(ResultSet resultSet) throws SQLException {
+			String trackId = resultSet.getString("TRACKS.ID");
+			if ((track == null) || (!track.id().equals(trackId))) {
+				track = new DefaultTrack(trackId).name(resultSet.getString("TRACKS.NAME")).artists(new ArrayList<Artist>()).styles(new HashSet<Style>());
+				loadedTracks.add(track);
+			}
+			Artist artist = new LazyArtist(resultSet.getString("ARTISTS.ID")).name(resultSet.getString("ARTISTS.NAME"));
+			if (!track.artists().contains(artist)) {
+				track.artists().add(artist);
+			}
+			Style style = new DefaultStyle(resultSet.getString("STYLES.ID")).name(resultSet.getString("STYLES.NAME"));
+			track.styles().add(style);
+		}
 
-				public void save() {
-					if (!dirty()) {
-						return;
-					}
-				}
+	}
+
+	private class ArtistLoader implements ResultProcessor {
+
+		private final List<Artist> artists = new ArrayList<Artist>();
+		private Artist artist;
 
-			}.name(resultSet.getString("ARTISTS.NAME"));
+		public Artist get() {
+			return artists.isEmpty() ? null : artists.get(0);
 		}
 
-	}
+		public List<Artist> all() {
+			return artists;
+		}
 
-	private class StyleLoader implements ObjectCreator<Style> {
+		//
+		// RESULTPROCESSOR METHODS
+		//
 
 		/**
 		 * {@inheritDoc}
 		 */
-		public Style createObject(ResultSet resultSet) throws SQLException {
-			return new AbstractStyle(resultSet.getString("STYLES.ID")) {
+		public void processResult(ResultSet resultSet) throws SQLException {
+			String artistId = resultSet.getString("ARTISTS.ID");
+			if ((artist == null) || (!artist.id().equals(artistId))) {
+				artist = new LazyArtist(artistId).name(resultSet.getString("ARTISTS.NAME")).groups(new HashSet<Group>());
+				artists.add(artist);
+			}
+
+			Group group = new DefaultGroup(resultSet.getString("GROUPS.ID")).name(resultSet.getString("GROUPS.NAME")).url(resultSet.getString("GROUPS.URL"));
+			artist.groups().add(group);
+		}
+
+	}
+
+	private class LazyArtist extends DefaultArtist {
 
-				public void save() {
-					if (!dirty()) {
-						return;
-					}
+		private final Memoizer<Void> tracks = new Memoizer<Void>(new Callable<Void>() {
+			public Void call() throws DatabaseException {
+				if (!hasValue("tracks")) {
+					value("tracks", Collection.class).set(getTracksByArtist(id()));
 				}
+				return null;
+			}
+		});
+
+		public LazyArtist(String id) {
+			super(id);
+		}
 
-			}.name(resultSet.getString("STYLES.NAME"));
+		public Collection<Track> tracks() {
+			tracks.get();
+			return super.tracks();
 		}
 
 	}