Evaluate FeatureScript request returns empty BTFSValueArray instead of face.

max_borsh

Hi everybody!
I want to determine the geometryId for existing face (upper face of extrude).
I have featureId of extrude that I got from response (feature -> message -> featureId. "FjEqUFlhNuPViCq_0", for example)

I sent evaluating FeatureScript request like this:

"FjEqUFlhNuPViCq_0", false), EntityType.FACE))); }
function(context is Context, queries){ return transientQueriesToStrings(evaluateQuery(context, 
qEntityFilter(qCapEntity(newId() + 

but in response I have only empty BTFSValueArray. What am I doing wrong?

 P.S.: documentID, workspaceID, elementID, serializationVersion, sourceMicroversion were added with evaluate FS request.

Thank you in advice!

ilya_baran

I don't see anything immediately wrong, but what is going on is that your query is not resolving to anything.  Can you create a custom feature in that document that calls

"FjEqUFlhNuPViCq_0", false), EntityType.FACE))debug(context,&nbsp;<code>qEntityFilter(qCapEntity(newId() + 

and see if that works?

max_borsh

Thank you for answer, Ilya!

Okay, I did it.
I created a custom feature with this call after the extrude feature via API was created. And I see the face that I need through debug. I can even get the transientId by using transientQueriesToStrings and println:

<div>debug(context, qEntityFilter(qCapEntity(newId() + "FBdS264Dn0b9qW0_0", false), EntityType.FACE));
println(transientQueriesToStrings(evaluateQuery(context, qEntityFilter(qCapEntity(newId() + "FBdS264Dn0b9qW0_0", false), EntityType.FACE))));</div>

    And what I can see:

But If I use same request via API (using C# HttpClient) it returns nothing (json that doesn't contain notices(errors) but contains  empty BTFSValueArray).
Another requests I sent (determine geometry of front plane, create sketch etc) worked fine.

Works fine:

planeDetermination = await SendObjectAsJsonAsync<object>(
                String.Format(OnshapeAPIConstants.FEATURES_FEATURE_SCRIPT, documentID, workspaceID, elementID),
            new OnshapeFeatureScriptEvaluationRequest()
            {
                script = "function(context is Context, queries){ return transientQueriesToStrings(evaluateQuery(context, qCreatedBy(makeId(\"Front\"), EntityType.FACE)));}",
                serializationVersion = serializationVersion,
                sourceMicroversion = sourceMicroversion,
                queries = new object[0]
            });

Doesn't work:

planeDetermination = await SendObjectAsJsonAsync<object>(
                String.Format(OnshapeAPIConstants.FEATURES_FEATURE_SCRIPT, documentID, workspaceID, elementID),
            new OnshapeFeatureScriptEvaluationRequest()
            {
                script = "function(context is Context, queries){{ return transientQueriesToStrings(evaluateQuery(context, qEntityFilter(qCapEntity(newId() + \"FBdS264Dn0b9qW0_0\", false), EntityType.FACE)));}}",
                serializationVersion = serializationVersion,
                sourceMicroversion = sourceMicroversion,
                queries = new object[0]
            });

Thank you in advise!

mark_noyes

It looks like the issue is related to the use of the sourceMicroversion parameter. The API is using that as the scope for evaluating your request. If that microversion does not identify a point in the model history in which the identified feature exists, you will get an empty list back.  I suspect that you are passing a microversion for a model state prior to your extrude. The Front plane exists in the initial microversion for the Part Studio, so it does not have this issue.

If you remove the sourceMicroversion field from your request, you will probably find this does what you expect.

max_borsh

Mark, thank you so much!

It's exactly what I need!