[IGNITE-13734] .NET Service loses returned array type information

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.9
• Fix Version/s: 2.10
• Component/s: platforms
• Release Note: .NET: Fix typed array passing in Services
• Assignee: Nikolay Izhikov
• Reporter: Alexey Kukushkin
• Created: 19/Nov/20 11:02
• Updated: 10/Mar/21 17:10
• Resolved: 25/Dec/20 19:52

Description

.NET service client receives Object[] instead of strongly typed array from a .NET service. 

There was another already resolved similar issue IGNITE-12823 that addressed the problem of using arrays as parameters. The problem of using arrays as results still exists.

Reproducer

A .NET service returning an array of user-defined types is deployed:

public interface ITestService
{
    Parameter[] TestReturnParametersArray();
}

public sealed class Parameter
{
    public int Id { get; set; }
    public int[] Values { get; set; }
}

A .NET client calls the service:

Parameter[] res = svcProxy.TestReturnParametersArray()

The service call fails with exception:

System.InvalidCastException : Unable to cast object of type 'System.Object[]' to type 'Parameter[]'.

Issue Links

• is related to: IGNITE-14299 .NET: Service loses array type information
• relates to: IGNITE-12823 .NET: Service method with user type array parameter can't be found
• links to: GitHub Pull Request #8602