[jira] [Created] (TINKERPOP3-652) select from Map should be explicit

[Matt Frantz (JIRA)]

Matt Frantz created TINKERPOP3-652:
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             Summary: select from Map should be explicit
                 Key: TINKERPOP3-652
                 URL: https://issues.apache.org/jira/browse/TINKERPOP3-652
             Project: TinkerPop 3
          Issue Type: Improvement
          Components: process
            Reporter: Matt Frantz


Currently, {{select}} looks at the value in the traverser, and if it is a 
{{Map}}, it treats its arguments as keys, and extracts values from the {{Map}}. 
 Otherwise, it treats its arguments as step labels and extracts values from the 
{{Path}}.  It would seem less confusing to make this choice explicit.

The two modes of {{select}} feel a bit like the two modes of {{range}} 
distinguished by the {{Scope}} parameter.  Does {{select}} need a {{local}} 
option to make it expect a {{Map}}?

Or would {{selectKeys}} be more consistent with {{hasKeys}}?



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