inV 

How to designate the incoming vertex to use when loading data from a data file.

Synopsis 

inV "field_name"

Description 

Sets the field name in the input file that will define the incoming vertex of an edge. Both inV and outV must be defined in an edge mapping statement.

Examples 

Sets the field name for the incoming vertex in a mapping script to FridgeSensor.
//Sample line read:
// city_id|sensor_id|name
// santaCruz|93c4ec9b-68ff-455e-8668-1056ebc3689f|asparagus

// The incoming vertex has a vertex label of FridgeSensor, the particular vertex is defined as the one with
// the city_id of santaCruz and a sensor_id of 93c4ec9b-68ff-455e-8668-1056ebc3689f
inV "FridgeSensor", {
        label "FridgeSensor"
        key city_id:"city_id", sensor_id:"sensor_id"
The field name in the input file that defines the outgoing vertex is FridgeSensor, the vertex has a vertex label of FridgeSensor, and the composite key value city_id, sensor_id is supplied in the input file field set in this statement. The label and key must be set along with inV.