Process results of Geoprocessor which returns GPMultiValue<GPFeatureRecordSetLayer>

Permanently deleted user

27 Januari 2017 03:43

I have a geoprocessing service that returns result of type GPMultiValue<GPFeatureRecordSetLayer> (ie multiple ArcGIS FeatureSet objects).

 

I would like to include this in a Geocortex Essentials workflow as display the results set from each of the FeatureSets.

 

Is this possible?

 

My attempts so far have been fruitless.  I've got a workflow that produces no syntax errors, but during execution, the 'Cast' (Cast<List<GPFeatureRecordSetLayer>>) fails.

 

Even if this succeeds, I'm not entirely sure what to do with it after that.  My workflow attempts to simply run a "foreach" and to select the features from each feature set.  No idea if this will do what I want or not, because I can't get past that 'Cast' that fails at run time.

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  Malcolm Walker

  • Community-Manager

  17 April 2017 23:22

  Hi Nik,

   

  You shouldn't need to use a Cast<T> activity to get the results of your geoprocessor as a GPMultiValue:GPFeatureRecordSetLayer.

   

  The expected object type is just that, GPMultiValue<GPFeatureRecordSetLayer>.  You can make a variable of this type by selecting Browse for Types... and typing GPMultiValue.  When you select GPMultiValue<T> then you must also choose the T class, which is GPFeatureRecordSet layer.

   

  A super easy shortcut is to type F3 when your cursor is in the Geoprocessor activity input/output box, because then Workflow Designer will pick an appropriate class type for a variable for that box.

   

  To iterate over the resulting collection of layers, use the .Value member of the GPMultiValue object.

   

  Regards,

   

  -Malcolm

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