project upload

app/src/main/java/com/cappielloantonio/play/database/AppDatabase.java

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+package com.cappielloantonio.play.database;
+
+import android.content.Context;
+
+import androidx.room.Database;
+import androidx.room.Room;
+import androidx.room.RoomDatabase;
+
+import com.cappielloantonio.play.database.dao.AlbumDao;
+import com.cappielloantonio.play.database.dao.ArtistDao;
+import com.cappielloantonio.play.database.dao.GenreDao;
+import com.cappielloantonio.play.database.dao.PlaylistDao;
+import com.cappielloantonio.play.database.dao.SongDao;
+import com.cappielloantonio.play.model.Album;
+import com.cappielloantonio.play.model.Artist;
+import com.cappielloantonio.play.model.Genre;
+import com.cappielloantonio.play.model.Playlist;
+import com.cappielloantonio.play.model.Song;
+
+@Database(entities = {Album.class, Artist.class, Genre.class, Playlist.class, Song.class}, version = 2, exportSchema = false)
+public abstract class AppDatabase extends RoomDatabase {
+    private static final String TAG = "AppDatabase";
+
+    private static AppDatabase instance;
+    private final static String DB_NAME = "play_db";
+
+    public static synchronized AppDatabase getInstance(Context context) {
+
+        if (instance == null) {
+            instance = Room.databaseBuilder(context.getApplicationContext(), AppDatabase.class, DB_NAME)
+                    .fallbackToDestructiveMigration()
+                    .build();
+        }
+        return instance;
+    }
+
+    public abstract AlbumDao albumDao();
+
+    public abstract ArtistDao artistDao();
+
+    public abstract GenreDao genreDao();
+
+    public abstract PlaylistDao playlistDao();
+
+    public abstract SongDao songDao();
+}

app/src/main/java/com/cappielloantonio/play/database/dao/AlbumDao.java

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+package com.cappielloantonio.play.database.dao;
+
+import androidx.lifecycle.LiveData;
+import androidx.room.Dao;
+import androidx.room.Delete;
+import androidx.room.Insert;
+import androidx.room.OnConflictStrategy;
+import androidx.room.Query;
+
+import com.cappielloantonio.play.model.Album;
+import com.cappielloantonio.play.model.Song;
+
+import java.util.List;
+
+@Dao
+public interface AlbumDao {
+    @Query("SELECT * FROM album")
+    LiveData<List<Album>> getAll();
+
+    @Query("SELECT EXISTS(SELECT * FROM album WHERE id = :id)")
+    boolean exist(String id);
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    void insert(Album album);
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    void insertAll(List<Album> albums);
+
+    @Delete
+    void delete(Album album);
+}

app/src/main/java/com/cappielloantonio/play/database/dao/ArtistDao.java

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+package com.cappielloantonio.play.database.dao;
+
+import androidx.lifecycle.LiveData;
+import androidx.room.Dao;
+import androidx.room.Delete;
+import androidx.room.Insert;
+import androidx.room.OnConflictStrategy;
+import androidx.room.Query;
+
+import com.cappielloantonio.play.model.Album;
+import com.cappielloantonio.play.model.Artist;
+
+import java.util.List;
+
+@Dao
+public interface ArtistDao {
+    @Query("SELECT * FROM artist")
+    LiveData<List<Artist>> getAll();
+
+    @Query("SELECT EXISTS(SELECT * FROM artist WHERE id = :id)")
+    boolean exist(String id);
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    void insert(Artist artist);
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    void insertAll(List<Artist> artists);
+
+    @Delete
+    void delete(Artist artist);
+}

app/src/main/java/com/cappielloantonio/play/database/dao/GenreDao.java

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+package com.cappielloantonio.play.database.dao;
+
+import androidx.lifecycle.LiveData;
+import androidx.room.Dao;
+import androidx.room.Delete;
+import androidx.room.Insert;
+import androidx.room.OnConflictStrategy;
+import androidx.room.Query;
+
+import com.cappielloantonio.play.model.Artist;
+import com.cappielloantonio.play.model.Genre;
+
+import java.util.List;
+
+@Dao
+public interface GenreDao {
+    @Query("SELECT * FROM genre")
+    LiveData<List<Genre>> getAll();
+
+    @Query("SELECT EXISTS(SELECT * FROM genre WHERE id = :id)")
+    boolean exist(String id);
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    void insert(Genre genre);
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    void insertAll(List<Genre> genres);
+
+    @Delete
+    void delete(Genre genre);
+}

app/src/main/java/com/cappielloantonio/play/database/dao/PlaylistDao.java

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+package com.cappielloantonio.play.database.dao;
+
+import androidx.lifecycle.LiveData;
+import androidx.room.Dao;
+import androidx.room.Delete;
+import androidx.room.Insert;
+import androidx.room.OnConflictStrategy;
+import androidx.room.Query;
+
+import com.cappielloantonio.play.model.Artist;
+import com.cappielloantonio.play.model.Playlist;
+
+import java.util.List;
+
+@Dao
+public interface PlaylistDao {
+    @Query("SELECT * FROM playlist")
+    LiveData<List<Playlist>> getAll();
+
+    @Query("SELECT EXISTS(SELECT * FROM playlist WHERE id = :id)")
+    boolean exist(String id);
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    void insert(Playlist playlist);
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    void insertAll(List<Playlist> playlists);
+
+    @Delete
+    void delete(Playlist playlist);
+}

app/src/main/java/com/cappielloantonio/play/database/dao/SongDao.java

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+package com.cappielloantonio.play.database.dao;
+
+import androidx.lifecycle.LiveData;
+import androidx.room.Dao;
+import androidx.room.Delete;
+import androidx.room.Insert;
+import androidx.room.OnConflictStrategy;
+import androidx.room.Query;
+
+import com.cappielloantonio.play.model.Song;
+
+import java.util.List;
+
+@Dao
+public interface SongDao {
+    @Query("SELECT * FROM song")
+    LiveData<List<Song>> getAll();
+
+    @Query("SELECT EXISTS(SELECT * FROM song WHERE id = :id)")
+    boolean exist(String id);
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    void insert(Song song);
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    void insertAll(List<Song> songs);
+
+    @Delete
+    void delete(Song song);
+}