[TINKERPOP-2614] Gremlin.NET should throw if already iterated traversal gets modulated

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 3.4.12, 3.5.1
• Component/s: dotnet
• Assignee: Unassigned
• Reporter: Florian Hockmann
• Created: 03/Sep/21 10:01
• Updated: 03/Sep/21 10:01

Description

It is not possible to modulate a traversal that was already iterated. Gremlin-Java makes that clear by throwing an exception:

gremlin> t = g.V().has('test','test'); []
gremlin> t.hasNext()
==>true
gremlin> t.property('test','test').iterate()
The traversal strategies are complete and the traversal can no longer be modulated

Gremlin.NET however does not throw an exception which can be confusing as users might expect this to work.

This problem was reported by a user on SO: https://stackoverflow.com/q/69031410/6753576