[TINKERPOP-2235] Better handle the concept of null in traversals

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Done
• Affects Version/s: 3.4.2
• Fix Version/s: 3.5.0
• Component/s: process
• Labels: breaking
• Assignee: Stephen Mallette
• Reporter: Stephen Mallette
• Created: 04/Jun/19 11:58
• Updated: 03/Dec/19 18:35
• Resolved: 03/Dec/19 18:35

Description

Introduce a Gremlin specific Null object to better allow for conveying the notion of "null" in traversals allowing things like:

gremlin> g.inject(Null.instance())
==> null
gremlin> g.V(1).property("x", 1).property("y", Null.instance()).property("z", 2))  
==> v[1]

See the linked DISCUSS thread for more information.

Issue Links

• links to: DISCUSS
• links to: GitHub Pull Request #1214