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Fix EF Core DistinctBy query translation errors

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Refactor all item query methods to avoid untranslatable DistinctBy
in IQueryable expressions. Replace ApplyGroupingFilter with a
two-phase pattern: load IDs and grouping keys to memory, apply
grouping and paging in-memory, then reload full entities by ID.
Add ApplyGroupingInMemory<T> and ApplyPagingToIds helpers.
Use AsEnumerable() before DistinctBy in GetItemValues to force
client-side evaluation. Resolves InvalidOperationException on
/Items, /Items/Filters, /Users/{id}/Items/Latest, and /Studios
endpoints across all supported databases. See
EF_CORE_QUERY_TRANSLATION_FIX.md for details.
This commit is contained in:
Wendell Jones
2026-03-05 17:17:16 -05:00
parent 7eb2b445cb
commit 8b0503f398
3 changed files with 774 additions and 47 deletions
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Jellyfin.Server/Jellyfin.Server.csproj.user
+1 -1
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@@ -1,6 +1,6 @@
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<PropertyGroup>
<NameOfLastUsedPublishProfile>D:\Projects\pgsql-jellyfin\Jellyfin.Server\Properties\PublishProfiles\SelfContained-Win-x64.pubxml</NameOfLastUsedPublishProfile>
<NameOfLastUsedPublishProfile>D:\Projects\pgsql-jellyfin\Jellyfin.Server\Properties\PublishProfiles\FolderProfile.pubxml</NameOfLastUsedPublishProfile>
</PropertyGroup>
</Project>