Webapi: $apply in combination with $select not working

[wurst0815]

Combination of $apply and $select not working.
According to http://docs.oasis-open.org/odata/odata-data-aggregation-ext/v4.0/cs02/odata-data-aggregation-ext-v4.0-cs02.html#_Toc435016590

3.16 Evaluating $apply
The new system query option $apply is evaluated first, then the other system query options are evaluated, if applicable, on the result of $apply in their normal order (see [OData-Protocol, section 11.2.1]). If the result is a collection, $filter, $orderby, $expand and $select work as usual on properties that are defined on the output set after evaluating $apply.

Assemblies affected

Microsoft.aspNet.OData 7.0.1.20718

Reproduce steps

RutHWModelsView?$apply=groupby((description,hw_model,id))&$select=description,hw_model,id

Expected result

The select should work as the groupby returns a collection.

Actual result

"message": "Instance property 'description' is not defined for type 'Microsoft.AspNet.OData.Query.Expressions.AggregationWrapper'",

Additional detail

Optional, details of the root cause if known. Delete this section if you have no additional details to add.

[xuzhg]

@kosinsky Would please take a look this issue?

[kosinsky]

It's not implemented yet. Workaround is to just do "RutHWModelsView?$apply=groupby((description,hw_model,id))". Adding $select will not change query results

[wurst0815]

That's correct, the result is the same in that case.
But I'm using a framework which automatically adds the $select to the query, as it normally should work according to the specs.
Is this already in scope for one of the next releases?
Thanks

[mikenorgate]

Is there any progress on this?

This is the stack trace I get when attempting a query which contains a groupby and a select

{
    "error": "System.ArgumentNullException",
    "message": "Value cannot be null.\r\nParameter name: property",
    "stackTrace": [
        "   at System.Linq.Expressions.Expression.Property(Expression expression, PropertyInfo property)\r",
        "   at Microsoft.AspNet.OData.Query.Expressions.SelectExpandBinder.CreatePropertyValueExpression(IEdmStructuredType elementType, IEdmProperty property, Expression source, FilterClause filterClause)\r",
        "   at Microsoft.AspNet.OData.Query.Expressions.SelectExpandBinder.BuildPropertyContainer(Expression source, IEdmStructuredType structuredType, IDictionary`2 propertiesToExpand, IDictionary`2 propertiesToInclude, ISet`1 autoSelectedProperties, Boolean isSelectingOpenTypeSegments)\r",
        "   at Microsoft.AspNet.OData.Query.Expressions.SelectExpandBinder.ProjectElement(Expression source, SelectExpandClause selectExpandClause, IEdmStructuredType structuredType, IEdmNavigationSource navigationSource)\r",
        "   at Microsoft.AspNet.OData.Query.Expressions.SelectExpandBinder.GetProjectionLambda(SelectExpandQueryOption selectExpandQuery)\r",
        "   at Microsoft.AspNet.OData.Query.Expressions.SelectExpandBinder.Bind(IQueryable queryable, SelectExpandQueryOption selectExpandQuery)\r",
        "   at Microsoft.AspNet.OData.Query.Expressions.SelectExpandBinder.Bind(IQueryable queryable, ODataQuerySettings settings, SelectExpandQueryOption selectExpandQuery)\r",
        "   at Microsoft.AspNet.OData.Query.SelectExpandQueryOption.ApplyTo(IQueryable queryable, ODataQuerySettings settings)\r",
        "   at Microsoft.AspNet.OData.Query.ODataQueryOptions.ApplySelectExpand[T](T entity, ODataQuerySettings querySettings)\r",
        "   at Microsoft.AspNet.OData.Query.ODataQueryOptions.ApplyTo(IQueryable query, ODataQuerySettings querySettings)\r",
        "   at Microsoft.AspNet.OData.EnableQueryAttribute.ApplyQuery(IQueryable queryable, ODataQueryOptions queryOptions)\r",
        "   at Microsoft.AspNet.OData.EnableQueryAttribute.ExecuteQuery(Object responseValue, IQueryable singleResultCollection, IWebApiActionDescriptor actionDescriptor, Func`2 modelFunction, IWebApiRequestMessage request, Func`2 createQueryOptionFunction)\r",
        "   at Microsoft.AspNet.OData.EnableQueryAttribute.OnActionExecuted(Object responseValue, IQueryable singleResultCollection, IWebApiActionDescriptor actionDescriptor, IWebApiRequestMessage request, Func`2 modelFunction, Func`2 createQueryOptionFunction, Action`1 createResponseAction, Action`3 createErrorAction)\r",
        "   at Microsoft.AspNet.OData.EnableQueryAttribute.OnActionExecuted(ActionExecutedContext actionExecutedContext)\r",
        "   at Microsoft.AspNetCore.Mvc.Filters.ActionFilterAttribute.OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)\r",
        "   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeNextActionFilterAsync()\r",
        "   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext context)\r",
        "   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)\r",
        "   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeInnerFilterAsync()\r",
        "   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextExceptionFilterAsync()"
    ]
}

[knapekt]

Any updates on this? Will this be resolved, or do I need to find a work-around?

[rjayabalan-conga]

Guys, any update on this in the latest version? If not, what is the work-around?