mid-traversal V()

Fetch a vertex in the middle of a graph traversal.

Synopsis

V().has('vertexLabel', 'propertyKey', 'propertyValue')
Table 1. Legend
Syntax conventions Description
Lowercase and uppercase Literal keyword. Includes ().
Italics Variable value. Replace with a user-defined value.
[] Optional. Square brackets ( [] ) surround optional command arguments. Do not type the square brackets.
{} Group. Braces ( {} ) identify a group to choose from. Do not type the braces.
| Or. A vertical bar ( | ) separates alternative elements. Type any one of the elements. Do not type the vertical bar.
... Repeatable. An ellipsis ( ... ) indicates that you can repeat the syntax element as often as required.

Description

A mid-traversal V() step can be used to fetch an additional vertex in the middle of a graph traversal, to use for some additional operation.

Examples

Use a mid-traversal V() to fetch the person named Sharon Smith, so that an edge can be created between Jim Walsh and Sharon Smith:
// graph step V() in mid-traversal
// create a new user to use in the addE() step named Jim Walsh
//g.addV('person').property('personId', 26).property('name','Jim Walsh').property('gender', 'M')

// use a mid-traversal V() step to create a new edge between two people
g.V().has('person', 'name', 'Jim Walsh').as('jim').
    V().has('person', 'name', 'Sharon Smith').as('sharon').
    addE('knows').from('jim').to('sharon').
      property('since', 1980)