In the following query : g.V().has('UID','1233333').as('src').bothE().as('rel').otherV().as('dst').path() : I would like it to return the src if there are no edges to the vertex

[אלה וייס‎]

In case the src vertex has no edges,the above query results with 0 results, but I would like the query to return the src vertex in that case 

[Daniel Kuppitz]

Step labels are unnecessary for this query. You can do this:

g.V().has('UID','1233333').optional(bothE().otherV()).path()

But then you probably have this older version of TP, that tells you, that optional() doesn't exist...

g.V().has('UID','1233333').choose(bothE(), bothE().otherV(), identity()).path()

That's the same.

Cheers,

Daniel

On Tue, May 3, 2016 at 2:14 PM, אלה וייס <ellavs...@gmail.com> wrote:

In case the src vertex has no edges,the above query results with 0 results, but I would like the query to return the src vertex in that case 

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[אלה וייס‎]

thanks,but how can I add filter or where clouse in order to add condition to get only the vertexes which has more than one edge

g.V().has('UID','1233333').choose(bothE().where(__.bothE().count().is(gt(1))), bothE().where(__.bothE().count().is(gt(1))).otherV(), identity()).path()

I get an error: 

[][.....]Expected traverser of Titan vertex but found  e

בתאריך יום שלישי, 3 במאי 2016 בשעה 15:14:49 UTC+3, מאת אלה וייס:

[Daniel Kuppitz]

You're trying to traverse bothE() from bothE() which, of course, is not possible.

Swap the steps and it should work.

g.V().has('UID','1233333').choose(where(__.bothE().count().is(gt(1))).bothE(), where(__.bothE().count().is(gt(1))).bothE().otherV(), identity()).path()

Cheers,

Daniel

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