[jira] [Closed] (TINKERPOP-1347) RemoteConnection needs to provide TraversalSideEffects.

["stephen mallette (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TINKERPOP-1347?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stephen mallette closed TINKERPOP-1347.
---------------------------------------
       Resolution: Done
         Assignee: stephen mallette
    Fix Version/s: 3.2.2

> RemoteConnection needs to provide TraversalSideEffects.
> -------------------------------------------------------
>
>                 Key: TINKERPOP-1347
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-1347
>             Project: TinkerPop
>          Issue Type: Improvement
>          Components: driver, process, server
>    Affects Versions: 3.2.0-incubating
>            Reporter: Marko A. Rodriguez
>            Assignee: stephen mallette
>              Labels: breaking
>             Fix For: 3.2.2
>
>
> Right now the {{RemoteConnection}} API is this:
> {code}
> public <E> Iterator<Traverser.Admin<E>> submit(final Traversal<?, E> traversal) throws RemoteConnectionException;
> {code}
> This is bad because a result set is not just an iterator of traversers, it is also the sideEffects. I just hit a big snag in {{gremlin-variants}} when not using TinkerGraph and thus, not everything in the same JVM.
> I think we should do one of two things:
> {code}
> public <E> Traversal<?,E> submit(final Traversal<?, E> traversal) throws RemoteConnectionException;
> {code}
> In essence, a traversal goes out an then a traversal comes back and that traversal has an end step iterator of traversers as well as traversal side-effects. Moreover, that returned {{Traversal}} could be like {{RemoteTraversal}}  and when {{getSideEffects()}} is called, the sideEffects are lazily fetched ....
> We will have the same problem when we extend {{RemoteConnection}} with:
> {code}
> public <E> Iterator<Traverser.Admin<E>> submit(final String alias, final String scriptEngine, final String traversalScript, Object... bindings) throws RemoteConnectionException;
> {code}
> I sort of like the concept of {{RemoteTraversal}} as it allows us to not only {{getSideEffects()}}, but also {{toString()}}, etc. A remote traversal can offer more control than just {{Iterator}}.
> cc/ [~spmallette]



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