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                                            ellavs1

how can I addVertex only if not exists and addEdge only if not exists using grex script in one query for execute

thanks, but grex does not have hasNext() function. i tried : var v1 = query.var((g.V('uid','123').count() > 0)?g.V('uid','123').next():g.addVertex({"uid":"123"})); but it always do g.addVertex , I run it in gremlin rexster command...