Matt Frantz created TINKERPOP3-670:
--------------------------------------
Summary: tail step
Key: TINKERPOP3-670
URL: https://issues.apache.org/jira/browse/TINKERPOP3-670
Project: TinkerPop 3
Issue Type: Improvement
Components: process
Reporter: Matt Frantz
The tail step has two scopes:
* global: emits the last N traversers that pass through it.
* local: emits a {{List}} containing the last N elements of the inbound {{List}}
Additionally, for {{tail(local, 1)}}, it emits a single element rather than a
{{List}} containing a single element.
TINKERPOP3-639 provides motivation.
Scenario: Global scope
{noformat}
gremlin> g.V().order().by(T.id, incr).last(global, 2)
==>v[5]
==>v[6]
{noformat}
Scenario: Local scope, N>1
{noformat}
gremlin> g.V().as('a').out().as('a').out().as('a').select('a').last(local, 2)
==>[v[4], v[5]]
==>[v[4], v[3]]
{noformat}
Scenario: Local scope, N=1
{noformat}
gremlin> g.V().as('a').out().as('a').out().as('a').select('a').last(local, 1)
==>v[5]
==>v[3]
{noformat}
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
