[jira] [Created] (TINKERPOP3-723) constant step

["Matt Frantz (JIRA)" <ji...@apache.org>]

Matt Frantz created TINKERPOP3-723:
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             Summary: constant step
                 Key: TINKERPOP3-723
                 URL: https://issues.apache.org/jira/browse/TINKERPOP3-723
             Project: TinkerPop 3
          Issue Type: Improvement
            Reporter: Matt Frantz


The proposed {{constant}} step would be like a {{map}} that always returns the same value.  It is most useful as an {{option}} or as an argument of {{coalesce}} or {{branch}}.

{noformat}
gremlin> g.V().coalesce(__.hasLabel('person').values('name'), __.constant('nonperson'))
gremlin> g.V().coalesce(__.hasLabel('person').values('name'), __.map{it -> 'nonperson'})
==>marko
==>vadas
==>nonperson
==>josh
==>nonperson
==>peter
{noformat}

It was mentioned by [~dkuppitz] in the comments of TINKERPOP3-700.



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