[Geotools-gt2-users] Question about ESRI OIDs

[SPDBA <si...@sp...>]

GeoTools people.
I've a simple question.
I'm connecting to an ArcGIS feature web service.
What I want to discover is which field in the published attributes is the primary key. The sites I am looking at can have OBJECTID fields of type esriFieldTypeOID, but often the name is otherwise: rid, gid, fid, oid etc etc. The common thing is that one field is of type esriFieldTypeOID. 
Looking at the source with GeoTools the data type is returned as java.lang.Integer (AttributeDescriptor) which is fair enough in one sense but not useful to distinguish a field from all other integer. So, is there a way of discovering what field is of type 
esriFieldTypeOID?
Simon

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