[jira] [Resolved] (TINKERPOP-1415) Vertex programs that rely on getting path parameters can't work

["Bryn Cooke (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TINKERPOP-1415?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bryn Cooke resolved TINKERPOP-1415.
-----------------------------------
    Resolution: Duplicate

> Vertex programs that rely on getting path parameters can't work
> ---------------------------------------------------------------
>
>                 Key: TINKERPOP-1415
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-1415
>             Project: TinkerPop
>          Issue Type: Bug
>          Components: process
>    Affects Versions: 3.2.1
>            Reporter: Bryn Cooke
>
> Recently some of our vertex programs have started failing.
> They rely of being able to retrieve an element out of the path.
> However, whereas this used to work now the path element isn't there anymore.
> The root cause is that path retraction doesn't know that the vertex program is interested in the path and therefore culls out parameter.
> I can understand why it does this, but there seems to be no way of exposing the vertex program path requirements such that PathRetractionStrategy can pick them up and do the right thing.
> I tried hacking together a solution by making ProgramVertexProgramStep implement Scoping. This did fix the issue, but I am not confident that this is the way to go.



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