RE: Function Import questions

["Handl, Ralf" <ralf.handl@sap.com>]

Hi Mark,

 

Question 1: yes, that should be possible:

 

resourcePath = …

             / entityFunctionImportCall       [ singleNavigation ]

 

singleNavigation = …

                   [ "/" propertyPath

                   / …

 

 

Question 2: yes, if you prefix the unqualified function import with $root/

 

http://services.odata.org/TripPinRESTierService/(S(2yexst3navg3ksybtvafe0ux))/People?$filter=LastName eq $root/GetPersonWithMostFriends()/LastName

 

Which is not implemented by the TripPin service.

 

Thanks

Ralf

 

From: odata@lists.oasis-open.org [mailto:odata@lists.oasis-open.org] On Behalf Of Mark Biamonte
Sent: Freitag, 13. Oktober 2017 00:36
To: odata@lists.oasis-open.org
Subject: [odata] Function Import questions

 

I am trying to come up with an example of using a function import in a $filter _expression_.  I am not having much luck using the TripPin Service.

 

I can execute the function import query

 

http://services.odata.org/TripPinRESTierService/(S(2yexst3navg3ksybtvafe0ux))/GetPersonWithMostFriends()

 

and it returns the Person Russel Whyte

 

Then I try to execute the same function import and navigate to the LastName property of the Person returned

http://services.odata.org/TripPinRESTierService/(S(2yexst3navg3ksybtvafe0ux))/GetPersonWithMostFriends()/LastName

 

This returns a 500 response with the message “The page cannot be displayed because an internal server error has occurred.”

 

Question 1:  Should I be able to navigate to a property of an Entity returned by the function import?

 

Finally I try using the function import in a $filter _expression_

 

http://services.odata.org/TripPinRESTierService/(S(2yexst3navg3ksybtvafe0ux))/People?$filter=LastName eq Microsoft.OData.Service.Sample.TrippinInMemory.Models.GetPersonWithMostFriends()/LastName

 

This also returns a 500 response with the message “An error has occurred”.  I suspect this query may be failing for the same reason as the previous query.  I realize this is a contrived query since I can get the desired result by calling the function import directly.

 

Question 2: Should I be able to use a function import in the $filter _expression_ as in the above query?

 

Thanks

Mark