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From "stephen mallette (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (TINKERPOP-2050) Add a .toGremlinGroovyString() method to Traversal class
Date Thu, 27 Sep 2018 18:28:00 GMT

     [ https://issues.apache.org/jira/browse/TINKERPOP-2050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stephen mallette updated TINKERPOP-2050:
----------------------------------------
    Affects Version/s: 3.2.9

> Add a .toGremlinGroovyString() method to Traversal class
> --------------------------------------------------------
>
>                 Key: TINKERPOP-2050
>                 URL: https://issues.apache.org/jira/browse/TINKERPOP-2050
>             Project: TinkerPop
>          Issue Type: Improvement
>          Components: process
>    Affects Versions: 3.2.9
>            Reporter: Jim Hatcher
>            Priority: Minor
>
> I am working on a project where there is Java code being written to dynamically generate
a Traversal based on a request coming in to an API. You can think of this as a "Traversal
Builder."
> The code looks something like this:
> {code:java}
> Traversal<Vertex, Vertex> traversal = g.V();
> if (request.searchByAddress == true) {
>  traversal.hasLabel("address");
>  if (request.address.addressLine1 != null){
>  traversal.has("address_line_1", request.address.addressLine1)
>  }
> }
> etc.
> {code}
> When that code is being debugged, a traversal.toString() is run on the traversal to see
the ouptut. This output is Gremlin bytecode.
> It would be nice to have a way to easily see the Gremlin Groovy that was built so that
you could take the Groovy, drop it into Studio, make sure it runs, run a profile() on it,
and make sure it's efficient.
> I figured out that you can do this by running this code:
> {code:java}
> private String toGremlinGroovyString(Traversal traversal){
>  if (traversal == null){
>  return null;
>  }
> Bytecode bc = traversal.asAdmin().getBytecode();
>  return GroovyTranslator.of("g").translate(bc);
>  }
> {code}
> I think it would be nice to add that as a method on the Traversal class so that it could
be used by driver users more easily.



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