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https://issues.apache.org/jira/browse/IGNITE-14343?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pavel Tupitsyn updated IGNITE-14343:
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Description:
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.
was:
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.
> .NET: Allow arbitrary MemberInit projections in LINQ
> ----------------------------------------------------
>
> Key: IGNITE-14343
> URL: https://issues.apache.org/jira/browse/IGNITE-14343
> Project: Ignite
> Issue Type: Improvement
> Components: platforms
> Reporter: Pavel Tupitsyn
> Assignee: Pavel Tupitsyn
> Priority: Major
> Labels: .NET, LINQ
> Fix For: 2.11
>
>
> 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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