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Allow migration from sqlite-net to EF

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Bonus stage
This commit is contained in:
Dean Herbert
2017-10-19 19:41:16 +09:00
parent f7d0df1743
commit 1fbbee14e4
3 changed files with 71 additions and 3 deletions
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69
osu.Game/Database/OsuDbContext.cs
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@ -156,5 +156,74 @@ namespace osu.Game.Database
public IDisposable BeginScope<TState>(TState state) => null;
}
}
public void Migrate()
{
migrateFromSqliteNet();
Database.Migrate();
}
private void migrateFromSqliteNet()
{
try
{
// will fail if EF hasn't touched the database yet.
Database.ExecuteSqlCommand("SELECT * FROM __EFMigrationsHistory LIMIT 1");
}
catch
{
try
{
// will fail (intentionally) if we don't have sqlite-net data present.
Database.ExecuteSqlCommand("SELECT OnlineBeatmapSetId FROM BeatmapMetadata LIMIT 1");
// we are good to perform messy migration of data!.
Database.ExecuteSqlCommand("ALTER TABLE BeatmapDifficulty RENAME TO BeatmapDifficulty_Old");
Database.ExecuteSqlCommand("ALTER TABLE BeatmapMetadata RENAME TO BeatmapMetadata_Old");
Database.ExecuteSqlCommand("ALTER TABLE FileInfo RENAME TO FileInfo_Old");
Database.ExecuteSqlCommand("ALTER TABLE KeyBinding RENAME TO KeyBinding_Old");
Database.ExecuteSqlCommand("ALTER TABLE BeatmapSetInfo RENAME TO BeatmapSetInfo_Old");
Database.ExecuteSqlCommand("ALTER TABLE BeatmapInfo RENAME TO BeatmapInfo_Old");
Database.ExecuteSqlCommand("ALTER TABLE BeatmapSetFileInfo RENAME TO BeatmapSetFileInfo_Old");
Database.ExecuteSqlCommand("ALTER TABLE RulesetInfo RENAME TO RulesetInfo_Old");
Database.ExecuteSqlCommand("DROP TABLE StoreVersion");
// perform EF migrations to create sane table structure.
Database.Migrate();
// copy data table by table to new structure, dropping old tables as we go.
Database.ExecuteSqlCommand("INSERT INTO FileInfo SELECT * FROM FileInfo_Old");
Database.ExecuteSqlCommand("DROP TABLE FileInfo_Old");
Database.ExecuteSqlCommand("INSERT INTO KeyBinding SELECT ID, [Action], Keys, RulesetID, Variant FROM KeyBinding_Old");
Database.ExecuteSqlCommand("DROP TABLE KeyBinding_Old");
Database.ExecuteSqlCommand(
"INSERT INTO BeatmapMetadata SELECT ID, Artist, ArtistUnicode, AudioFile, Author, BackgroundFile, PreviewTime, Source, Tags, Title, TitleUnicode FROM BeatmapMetadata_Old");
Database.ExecuteSqlCommand("DROP TABLE BeatmapMetadata_Old");
Database.ExecuteSqlCommand(
"INSERT INTO BeatmapDifficulty SELECT `ID`, `ApproachRate`, `CircleSize`, `DrainRate`, `OverallDifficulty`, `SliderMultiplier`, `SliderTickRate` FROM BeatmapDifficulty_Old");
Database.ExecuteSqlCommand("DROP TABLE BeatmapDifficulty_Old");
Database.ExecuteSqlCommand("INSERT INTO BeatmapSetInfo SELECT ID, DeletePending, Hash, BeatmapMetadataID, OnlineBeatmapSetID, Protected FROM BeatmapSetInfo_Old");
Database.ExecuteSqlCommand("DROP TABLE BeatmapSetInfo_Old");
Database.ExecuteSqlCommand("INSERT INTO BeatmapSetFileInfo SELECT ID, BeatmapSetInfoID, FileInfoID, Filename FROM BeatmapSetFileInfo_Old");
Database.ExecuteSqlCommand("DROP TABLE BeatmapSetFileInfo_Old");
Database.ExecuteSqlCommand("INSERT INTO RulesetInfo SELECT ID, Available, InstantiationInfo, Name FROM RulesetInfo_Old");
Database.ExecuteSqlCommand("DROP TABLE RulesetInfo_Old");
Database.ExecuteSqlCommand(
"INSERT INTO BeatmapInfo SELECT ID, AudioLeadIn, BaseDifficultyID, BeatDivisor, BeatmapSetInfoID, Countdown, DistanceSpacing, GridSize, Hash, Hidden, LetterboxInBreaks, MD5Hash, NULLIF(BeatmapMetadataID, 0), OnlineBeatmapID, Path, RulesetID, SpecialStyle, StackLeniency, StarDifficulty, StoredBookmarks, TimelineZoom, Version, WidescreenStoryboard FROM BeatmapInfo_Old");
Database.ExecuteSqlCommand("DROP TABLE BeatmapInfo_Old");
}
catch
{
}
}
}
}
}