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rephrased description of local context checking

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This commit is contained in:
Aergwyn 2017-12-07 14:14:50 +01:00
parent 1dcbfab18e
commit 95955d68ef
1 changed files with 4 additions and 2 deletions
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6
osu.Game/Beatmaps/BeatmapStore.cs
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@ -34,12 +34,14 @@ namespace osu.Game.Beatmaps
foreach (var beatmap in beatmapSet.Beatmaps.Where(b => b.Metadata != null)) foreach (var beatmap in beatmapSet.Beatmaps.Where(b => b.Metadata != null))
{ {
// check local context for metadata so we can reuse duplicates from the same set // If we detect a new metadata object it'll be attached to the current context so it can be reused
// to prevent duplicate entries when persisting. To accomplish this we look in the cache (.Local)
// of the corresponding table (.Set<BeatmapMetadata>()) for matching entries to our criteria.
var contextMetadata = context.Set<BeatmapMetadata>().Local.SingleOrDefault(e => e.Equals(beatmap.Metadata)); var contextMetadata = context.Set<BeatmapMetadata>().Local.SingleOrDefault(e => e.Equals(beatmap.Metadata));
if (contextMetadata != null) if (contextMetadata != null)
beatmap.Metadata = contextMetadata; beatmap.Metadata = contextMetadata;
else else
context.BeatmapMetadata.Attach(beatmap.Metadata); // adding new to context context.BeatmapMetadata.Attach(beatmap.Metadata);
} }
context.BeatmapSetInfo.Attach(beatmapSet); context.BeatmapSetInfo.Attach(beatmapSet);