How to loop over verticies in Gremlin and adding edge

Question

I'm trying to figure out how to loop over verticies within a container and adding edges between the current vertice in the loop and a given vertice.

This is what I have so far: This gives me an array of all vertice id's within the given container:

v=g.V('containerName','MyContainer').outE.inV.id

result:

{"results":[12,320004,280004,240004,200004,160004,120004,80004,40004],"success":true,"version":"2.4.0","queryTime":35.089565}

Now I want to loop/iterate over all the id's in this array, get the vertice of the id and add an edge between a given vertice and the current vertice in the loop.

Anyone that knows how this can be done?

Faber Faber · Accepted Answer · 2014-12-09T10:01:17

You can make a sideEffect that adds the new edges.

With the toy tinker graph:

g = TinkerGraphFactory.createTinkerGraph()

let's assume you want to link peter to all neighbors of marko (out only)

givenVertex = g.V('name','peter').next()
g.V('name','marko').out.sideEffect{g.addEdge(givenVertex,it, 'yourLabel')}

verify result:

g.V('name','peter').out.name
==>lop // lop appears twice because edge peter -> lop was present previous to operation
==>lop
==>vadas
==>josh

How to loop over verticies in Gremlin and adding edge

1 Answers