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Shift tenant to aggregateId part of streamId #10

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merged 2 commits into from
Dec 6, 2021
Merged

Shift tenant to aggregateId part of streamId #10

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fabcf77
Shift tenant to streamId part of stream name
bartelink Oct 14, 2021
ee7d693
Tidy comment
bartelink Oct 14, 2021
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9 changes: 6 additions & 3 deletions CQRS_Flow/.NET/Core/Core/Events/StreamNameMapper.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -29,12 +29,15 @@ public static string ToStreamPrefix(Type streamType) => Instance.typeNameMap.Get
public static string ToStreamId<TStream>(object aggregateId, object? tenantId = null) =>
ToStreamId(typeof(TStream), aggregateId);

// Generates a stream id in the canonical `{category}-{aggregateId}` format
public static string ToStreamId(Type streamType, object aggregateId, object? tenantId = null)
{
var tenantPrefix = tenantId != null ? $"{tenantId}_" : "";
var tenantPrefix = tenantId == null ? $"{tenantId}_" : "";
var category = ToStreamPrefix(streamType);

return $"{tenantPrefix}{ToStreamPrefix(streamType)}-{aggregateId}";
// (Out-of-the box, the category projection treats anything before a `-` separator as the category name)
// For this reason, we place the "{tenantId}_" bit (if present) on the right hand side of the '-'
return $"{category}-{tenantPrefix}{aggregateId}";
}

}
}