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GetBaseItemDtos already batch fetches user data, child counts, played counts
and artists before its per item loop, but AttachPeople still ran one GetPeople
query per item. Rendering a page of items (for example a large playlist) fired
one extra query per row.
Add GetPeopleByItems to IPeopleRepository, which reads every requested item in a
single query over the people mapping table and returns full PersonInfo (role,
type and sort order) grouped by item id. GetBaseItemDtos prefetches this once
when the People field is requested and passes it into AttachPeople, which reads
from the batch instead of querying per item. The single item GetBaseItemDto path
keeps its existing per item behaviour when no batch is supplied.
Adds a DtoService test asserting people resolve from the batch and the per item
GetPeople is never called.
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Fix incorrect year on local trailers
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Avoid NRE when sorting by user-dependent keys without a user
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A query sorted by a user-dependent key (PlayCount, IsFavoriteOrLiked,
DatePlayed, IsPlayed, IsUnplayed) but carrying no User caused a
NullReferenceException inside UserDataManager.GetUserData, surfacing as
"Failed to compare two elements in the array" (InvalidOperationException
wrapping the NRE from the LINQ sort) and 500-ing the /Items request.
Root cause: LibraryManager.GetComparer assigned comparer.User = user
without a null guard, so PlayCountComparer.GetValue called
UserDataManager.GetUserData(null, item), dereferencing user.Id.
Two-part fix:
- LibraryManager.GetComparer: when user is null and the sort key requires a
user (IUserBaseItemComparer), substitute the SortName comparer so the
result stays deterministic instead of 500-ing. SortName is the project's
canonical tiebreaker (ItemsController injects it for album-by-artist).
- UserDataManager.GetUserData: ArgumentNullException.ThrowIfNull(user) as
defense in depth (matches the existing guards on the SaveUserData
overloads in the same file). On master this overload was rewritten to use
ResolveUserDataRow, so the NRE dereferences user.Id rather than
user.InternalId as on the release branch — same bug, different line.
Also fixes DateLastMediaAddedComparer being statically mis-tagged as
IUserBaseItemComparer: its GetDate is static and never reads User, so it
does not need one. Without this, the SortName fallback above would wrongly
engage for DateLastContentAdded on anonymous queries (returning SortName
order instead of date order). Re-tagged to IBaseItemComparer and dropped the
unused User/UserManager/UserDataManager properties.
Tests:
- UserDataManagerTests.GetUserData_NullUser_ThrowsArgumentNullException:
reproduces the crash (NRE -> now ArgumentNullException). Added to master's
existing UserDataManagerTests.
- LibraryManagerSortTests.Sort_UserDependentKey_NullUser_FallsBackToSortNameWithoutThrowing:
Sort with a user-dependent key + null user no longer throws and returns
items ordered by the SortName fallback (direction preserved).
- LibraryManagerSortTests.Sort_DateLastContentAdded_NullUser_OrdersByDateNotSortName:
guards that DateLastContentAdded still sorts by date with no user (fixture
chosen so date-desc and SortName-desc disagree, so a revert is caught).
Full Jellyfin.Server.Implementations.Tests suite: 642 passed, 0 failed.
Fixes #17393
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TheMelmacian/feature/library_specific_language_filter_values
Improve language filters to only fetch language codes that match the requested items/libraries (follow up to #9787)
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Refresh live TV channel image when remapped (alt #7843) (fixes #7834)
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Fix external data pruning on item deletion
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Fix similarity
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values
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Fix movie recommendations
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New filters for audio and subtitle languages
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Implement ignore rule caching
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Fix Playlist and Boxset query, save and count performance
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fix person TotalRecordCount when limit is applied
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