Aggregate Statement on Collection of IEdmEntityObjects cant find property

[vrkrishn]

I was wondering whether aggregation was supported for methods that return EdmEntityObjectCollection (i.e. with type parameter Contact). I see that in all the examples, the controller methods return IQueryable but I'm not sure if that would work if the method expects IEdmEntityObjects rather than aspecific contact object. Currently I am running into an exception where I cannot find a property defined in the Contact entityType.

Assemblies affected

Microsoft.AspNet.OData 5.9.1
Microsoft.OData.Core 6.15
Microsoft.OData.Edm 6.15

Reproduce steps

GET /data/Contacts?$apply=aggregate(Date with min as Earliest)

Expected result

{
@odata.context":"http://hostname/data/$metadata#Contacts,
"value": [
{
"@odata.id": null,
"Earliest": Datetime Object
}
]
}

Actual result

"error":{
"code":"","message":"The query specified in the URI is not valid. Could not find a property named 'Date' on type 'System.Web.OData.IEdmEntityObject'.
}

[TehWardy]

I have a similar problem when I use groupby with a DateTime property in the same version assemblies ...

~/Api/MyType?$apply=groupby((DueDate))

With the DueDate property on the type being a DateTime it returns ...

{
  "error": {
    "code": "",
    "message": "An error has occurred."
  }
}

doing a normal "get all" query with the url "~/Api/MyType" returns the data fine and displays the datetime properties correctly as ISO strings as I would expect.

[TehWardy]

Ah looks like my problem is #912
Could be related though I guess ???