[jira] [Created] (TINKERPOP3-851) GroupCountStep needs a by() for the count.

["Marko A. Rodriguez (JIRA)" <ji...@apache.org>]

Marko A. Rodriguez created TINKERPOP3-851:
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             Summary: GroupCountStep needs a by() for the count.
                 Key: TINKERPOP3-851
                 URL: https://issues.apache.org/jira/browse/TINKERPOP3-851
             Project: TinkerPop 3
          Issue Type: New Feature
          Components: process
            Reporter: Marko A. Rodriguez
            Assignee: Marko A. Rodriguez
             Fix For: 3.1.0-incubating


Currently {{groupCount()}} takes one {{by}}-modulator. That {{by()}} is the key-projection. In TP2, we had a second "by modulator" that was the number to "incr." In TP3, the number to incr is currently {{traverser.bulk()}}. We should keep this default, but we should support a user defined second {{by()}} modulator.

{code}
g.V.out.groupCount.by('name').by(sack())
g.V.out.groupCount.by('name').by('age')
{code}

This is necessary for 3.1.0 as it is necessary for the "signal processing" features available in the new sack-work.



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