[jira] [Closed] (TINKERPOP3-463) Now we can do as('a').out.as('b') in Gremlin-Groovy with SugarPlugin.

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

     [ https://issues.apache.org/jira/browse/TINKERPOP3-463?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Marko A. Rodriguez closed TINKERPOP3-463.
-----------------------------------------
    Resolution: Won't Fix

We now support {{as('a').out().as('b')}}. This is sufficient and any Groovy magic starts to muddy the situation (especially now that steps can be multi-labeled). I'm adverse to using Groovy {{propertyMissing}} and {{methodMissing}} meta-programming as it interferes with user Groovy meta-work as well as other meta-programming work within Gremlin-Groovy. The less tickery, the better.

> Now we can do as('a').out.as('b') in Gremlin-Groovy with SugarPlugin.
> ---------------------------------------------------------------------
>
>                 Key: TINKERPOP3-463
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP3-463
>             Project: TinkerPop 3
>          Issue Type: Improvement
>          Components: process
>            Reporter: Marko A. Rodriguez
>            Assignee: Marko A. Rodriguez
>
> [~mbroecheler] @joshsh [~dkuppitz] 
> Now that we have {{AnonymousGraphTraversal.Tokens.__}}, {{match()}} looks like this in Gremlin-Groovy (with Sugar).
> {code:groovy}
> g.V.match('a',
>     __.as('a').out('created').as('b'),
>     __.as('b').has('name', 'lop'),
>     __.as('b').in('created').as('c'),
>     __.as('c').has('age', 29)).
>                  select('a', 'c').by('name')
> {code}
> The only difference between this and non-sugar is {{g.V}} vs. {{g.V()}}. However, if we add to SugarPlugin that a missing method named {{as()}} is actually a call to {{AnonymousGraphTraversal.Tokens.__}} (which is 3 lines of code :)), then it will look like this:
> {code:groovy}
> g.V.match('a',
>     as('a').out('created').as('b'),
>     as('b').has('name', 'lop'),
>     as('b').in('created').as('c'),
>     as('c').has('age', 29)).
>                  select('a', 'c').by('name')
> {code}
> This is cool, but realize it only works for Gremlin-Groovy (with Sugar). Be nice to come up with a simplification that would also work for non-sugar and Gremlin-Java.



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