[jira] [Commented] (IGNITE-18120) .NET: Thin 3.0: Allow arbitrary MemberInit projections in LINQ

["Pavel Tupitsyn (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-18120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17709707#comment-17709707 ] 

Pavel Tupitsyn commented on IGNITE-18120:
-----------------------------------------

Looks good. Merged to main: 54781ef08e6b66fefaca13259fc888daef5ffe8f

> .NET: Thin 3.0: Allow arbitrary MemberInit projections in LINQ
> --------------------------------------------------------------
>
>                 Key: IGNITE-18120
>                 URL: https://issues.apache.org/jira/browse/IGNITE-18120
>             Project: Ignite
>          Issue Type: Improvement
>          Components: platforms
>            Reporter: Pavel Tupitsyn
>            Assignee: Sergey Stronchinskiy
>            Priority: Major
>              Labels: .NET, LINQ, ignite-3
>          Time Spent: 1h 40m
>  Remaining Estimate: 0h
>
> Ignite LINQ provider allows anonymous type projections:
> {code}
> query.Select(emp => new {Id = emp.Key, Name = emp.Value.Name});
> {code}
> However, it does not work with a custom class:
> {code}
> query.Select(emp => new Foo {Id = emp.Key, Name = emp.Value.Name});
> {code}
> throws exception:
> {code}
> System.NotSupportedException : The expression 'new Foo() {Id = [x].Key}' (type: System.Linq.Expressions.MemberInitExpression) is not supported.
> {code}
> Add VisitMemberInit overload to CacheQueryExpressionVisitor to support this scenario. See linked SO page for more details - there is a proposed fix as well.



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