Fix foreign key constraint failure

osu.Game/Beatmaps/BeatmapInfo.cs

@@ -19,19 +19,20 @@ namespace osu.Game.Beatmaps
         //TODO: should be in database
         public int BeatmapVersion;
 
+        [NotMapped]
         public int? BeatmapOnlineInfoId { get; set; }
 
+        [NotMapped]
         public int? BeatmapSetOnlineInfoId { get; set; }
 
         public int BeatmapSetInfoId { get; set; }
 
         public BeatmapSetInfo BeatmapSet { get; set; }
 
-        public int BeatmapMetadataId { get; set; }
+        public int? BeatmapMetadataId { get; set; }
 
         public BeatmapMetadata Metadata { get; set; }
 
-        //[Required]
         public int BeatmapDifficultyId { get; set; }
 
         public BeatmapDifficulty Difficulty { get; set; }

osu.Game/Beatmaps/BeatmapMetadata.cs

@@ -12,6 +12,7 @@ namespace osu.Game.Beatmaps
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
         public int Id { get; set; }
 
+        [NotMapped]
         public int? BeatmapSetOnlineInfoId { get; set; }
 
         public string Title { get; set; }

osu.Game/Beatmaps/BeatmapSetInfo.cs

@@ -12,6 +12,7 @@ namespace osu.Game.Beatmaps
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
         public int Id { get; set; }
 
+        [NotMapped]
         public int? BeatmapSetOnlineInfoId { get; set; }
 
         public BeatmapMetadata Metadata { get; set; }

osu.Game/Beatmaps/BeatmapStore.cs

@@ -137,22 +137,22 @@ namespace osu.Game.Beatmaps
 
         public BeatmapSetInfo QueryBeatmapSet(Func<BeatmapSetInfo, bool> query)
         {
-            return Connection.BeatmapSetInfo.FirstOrDefault(query);
+            return Connection.BeatmapSetInfo.Include(b=>b.Beatmaps).Include(b=>b.Metadata).FirstOrDefault(query);
         }
 
         public List<BeatmapSetInfo> QueryBeatmapSets(Expression<Func<BeatmapSetInfo, bool>> query)
         {
-            return Connection.BeatmapSetInfo.Where(query).ToList();
+            return Connection.BeatmapSetInfo.Include(b => b.Beatmaps).Include(b => b.Metadata).Include(b=>b.Files).Where(query).ToList();
         }
 
         public BeatmapInfo QueryBeatmap(Func<BeatmapInfo, bool> query)
         {
-            return Connection.BeatmapInfo.FirstOrDefault(query);
+            return Connection.BeatmapInfo.Include(b => b.BeatmapSet).Include(b => b.Metadata).Include(b=>b.Ruleset).FirstOrDefault(query);
         }
 
         public List<BeatmapInfo> QueryBeatmaps(Expression<Func<BeatmapInfo, bool>> query)
         {
-            return Connection.BeatmapInfo.Where(query).ToList();
+            return Connection.BeatmapInfo.Include(b => b.BeatmapSet).Include(b => b.Metadata).Where(query).ToList();
         }
     }
 }

osu.Game/Database/OsuDbContext.cs

@@ -47,9 +47,6 @@ namespace osu.Game.Database
             modelBuilder.Entity<RulesetInfo>().HasIndex(b => b.Name).IsUnique();
             modelBuilder.Entity<RulesetInfo>().HasIndex(b => b.InstantiationInfo).IsUnique();
             modelBuilder.Entity<RulesetInfo>().HasIndex(b => b.Available);
-            //modelBuilder.Entity<BeatmapMetadata>().HasOne(b => b.BeatmapSetOnlineInfo).WithOne(bs => bs.BeatmapMetadata).OnDelete(DeleteBehavior.SetNull);
-            //modelBuilder.Entity<BeatmapSetInfo>().HasOne(b => b.BeatmapSetOnlineInfo).WithOne(bs => bs.BeatmapSetInfo).OnDelete(DeleteBehavior.SetNull);
-            //modelBuilder.Entity<BeatmapInfo>().HasOne(b => b.BeatmapSetOnlineInfo).WithMany(bs => bs.Beatmaps).OnDelete(DeleteBehavior.SetNull);
         }
     }
 }

osu.Game/OsuGameBase.cs

@@ -83,8 +83,6 @@ namespace osu.Game
         protected override IReadOnlyDependencyContainer CreateLocalDependencies(IReadOnlyDependencyContainer parent) =>
             dependencies = new DependencyContainer(base.CreateLocalDependencies(parent));
 
-        private OsuDbContext dbContext;
-
         private OsuDbContext createDbContext()
         {
             var connectionString = Host.Storage.GetDatabaseConnectionString(@"client");
@@ -106,7 +104,7 @@ namespace osu.Game
             dependencies.Cache(this);
             dependencies.Cache(LocalConfig);
 
-            dbContext = createDbContext();
+            using (var dbContext = createDbContext())
                 if (dbContext.Database.GetPendingMigrations().Any())
                     dbContext.Database.Migrate();
 
@@ -116,11 +114,11 @@ namespace osu.Game
                 Token = LocalConfig.Get<string>(OsuSetting.Token)
             });
 
-            dependencies.Cache(RulesetStore = new RulesetStore(dbContext));
-            dependencies.Cache(FileStore = new FileStore(dbContext, Host.Storage));
-            dependencies.Cache(BeatmapManager = new BeatmapManager(Host.Storage, FileStore, dbContext, RulesetStore, API, Host));
-            dependencies.Cache(ScoreStore = new ScoreStore(Host.Storage, dbContext, Host, BeatmapManager, RulesetStore));
-            dependencies.Cache(KeyBindingStore = new KeyBindingStore(dbContext, RulesetStore));
+            dependencies.Cache(RulesetStore = new RulesetStore(createDbContext()));
+            dependencies.Cache(FileStore = new FileStore(createDbContext(), Host.Storage));
+            dependencies.Cache(BeatmapManager = new BeatmapManager(Host.Storage, FileStore, createDbContext(), RulesetStore, API, Host));
+            dependencies.Cache(ScoreStore = new ScoreStore(Host.Storage, createDbContext(), Host, BeatmapManager, RulesetStore));
+            dependencies.Cache(KeyBindingStore = new KeyBindingStore(createDbContext(), RulesetStore));
             dependencies.Cache(new OsuColour());
 
             //this completely overrides the framework default. will need to change once we make a proper FontStore.
@@ -247,8 +245,6 @@ namespace osu.Game
                 LocalConfig.Save();
             }
 
-            dbContext?.Dispose();
-
             base.Dispose(isDisposing);
         }
     }

osu.Game/Screens/Menu/Intro.cs

@@ -22,7 +22,7 @@ namespace osu.Game.Screens.Menu
     {
         private readonly OsuLogo logo;
 
-        private const string menu_music_beatmap_hash = "715a09144f885d746644c1983e285044";
+        private const string menu_music_beatmap_hash = "3c8b1fcc9434dbb29e2fb613d3b9eada9d7bb6c125ceb32396c3b53437280c83";
 
         /// <summary>
         /// Whether we have loaded the menu previously.
@@ -91,7 +91,6 @@ namespace osu.Game.Screens.Menu
                     setInfo = beatmaps.Import(new OszArchiveReader(game.Resources.GetStream(@"Tracks/circles.osz")));
 
                     setInfo.Protected = true;
-                    beatmaps.Delete(setInfo);
                 }
             }
 
@@ -101,6 +100,7 @@ namespace osu.Game.Screens.Menu
 
             welcome = audio.Sample.Get(@"welcome");
             seeya = audio.Sample.Get(@"seeya");
+            beatmaps.Delete(setInfo);
         }
 
         protected override void OnEntering(Screen last)