[jira] [Commented] (TINKERPOP3-620) Commutative Step Marker interface

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

    [ https://issues.apache.org/jira/browse/TINKERPOP3-620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14486411#comment-14486411 ] 

Marko A. Rodriguez commented on TINKERPOP3-620:
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Can you provide a list of the commutative steps? Next, only commutative steps can be reordered within a sequence of themselves, correct? 

> Commutative Step Marker interface
> ---------------------------------
>
>                 Key: TINKERPOP3-620
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP3-620
>             Project: TinkerPop 3
>          Issue Type: Improvement
>            Reporter: Matthias Broecheler
>             Fix For: 3.0.0.GA
>
>
> Some steps can be reordered, i.e. they are commutative. For instance, has-steps can be reordered without affecting the pipeline. When writing a query optimizer I am often in a situation where I can only optimize a subset of the supported steps and I might want to reorder them so that I can group all the optimizable steps together. Currently, I have to manually identify the commutative steps for that. It would be much nicer if TinkerPop could have a "Commutative" marker interface for that and use it consistently.



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