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EFCore will break on Net6 cause Queryable class will be extended and EF Core Reflection will break #24002

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jogibear9988 opened this issue Jan 27, 2021 · 5 comments · Fixed by #24090
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EFCore will break on Net6 cause Queryable class will be extended and EF Core Reflection will break #24002

jogibear9988 opened this issue Jan 27, 2021 · 5 comments · Fixed by #24090
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@smitpatel
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area-query closed-fixed The issue has been fixed and is/will be included in the release indicated by the issue milestone. customer-reported Servicing-approved type-bug
Milestone
3.1.14

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@jogibear9988
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EFCore reflection will break when this Issue is fixed and will be merged into NET6

dotnet/runtime#28776

Problem is EFCore only checks for Parameter count and uses "Single", so it will crash cause there will be now 2 Methods with same Parameter Count:

efcore/src/EFCore/Query/QueryableMethods.cs

Line 477 in 5d53796

ElementAt = queryableMethods.Single(

EFCore should switch to a safer reflection like done in Linq2db:
https://github.com/linq2db/linq2db/blob/37d0f108214c2fc0e6f1991c9d08627c605a9241/Source/LinqToDB/Reflection/Methods.cs#L42
or in NHibernate
https://github.com/nhibernate/nhibernate-core/blob/master/src/NHibernate/Util/ReflectionCache.cs
@smitpatel smitpatel self-assigned this Jan 28, 2021
@eiriktsarpalis
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Related to #23996.

@roji
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roji commented Jan 28, 2021

Unless I'm mistaken, this should also be backported otherwise older EF running on newer BCLs would also break...

@jogibear9988
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@roji yes, all versions without propper fix will not work on net6.
I think not only ElementAt should be fixed, all reflection code for method finding should be changed to be more stable (compare parameter types, not only count)

@ajcvickers
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Notes from triage: @smitpatel to follow up on:

  • Which releases of EF Core are broken
  • Whether or not EF6 is broken

@AndriySvyryd AndriySvyryd added this to the 5.0.x milestone Feb 5, 2021
smitpatel added a commit that referenced this issue Feb 8, 2021
@smitpatel
Query: Use stronger reflection in Queryable/Enumerable methods
7f8a1f9 
Resolves #24002
@smitpatel smitpatel mentioned this issue Feb 8, 2021
Merged
smitpatel added a commit that referenced this issue Feb 8, 2021
@smitpatel
Query: Use stronger reflection in Queryable/Enumerable methods
352cdf2 
Resolves #24002
smitpatel added a commit that referenced this issue Feb 10, 2021
@smitpatel
Query: Use stronger reflection in Queryable/Enumerable methods (#24090)
acfee51 
Resolves #24002
smitpatel added a commit that referenced this issue Feb 10, 2021
@smitpatel
Query: Use stronger reflection in Queryable/Enumerable methods (#24090)
77460f8 
Resolves #24002
@smitpatel smitpatel mentioned this issue Feb 10, 2021
Merged
smitpatel added a commit that referenced this issue Feb 10, 2021
@smitpatel
Query: Use stronger reflection in Queryable/Enumerable methods
50a34bd 
Resolves #24002
@smitpatel smitpatel mentioned this issue Feb 10, 2021
Merged
@smitpatel smitpatel reopened this Feb 10, 2021
@smitpatel
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PRs out for 3.1/5.0

@smitpatel smitpatel added the closed-fixed The issue has been fixed and is/will be included in the release indicated by the issue milestone. label Feb 10, 2021
wtgodbe pushed a commit that referenced this issue Mar 10, 2021
@smitpatel
Query: Use stronger reflection in Queryable/Enumerable methods (#24090)…
8fbe0c3 
… (#24115)

Resolves #24002
smitpatel added a commit that referenced this issue Mar 10, 2021
@smitpatel
[release/5.0] Query: Use stronger reflection in Queryable/Enumerable …
fbe40a1 
…methods (#24116)

Resolves #24002
@ajcvickers ajcvickers modified the milestones: 5.0.x, 3.1.14 Mar 11, 2021
This was referenced Mar 16, 2021
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@smitpatel smitpatel mentioned this issue Nov 11, 2021
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@KalleOlaviNiemitalo KalleOlaviNiemitalo mentioned this issue Jan 22, 2022
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@ajcvickers ajcvickers mentioned this issue Jun 8, 2022
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@roji roji mentioned this issue Jun 15, 2022
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Query: Use stronger reflection in Queryable/Enumerable methods dotnet/efcore
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@jogibear9988 @ajcvickers @smitpatel @roji @eiriktsarpalis @AndriySvyryd