2

Sample Graph: Tinker Modern

Query: Find all direct friends (person Vertex) of Marko and (union) all software in second hop.

Failed attempts:

Generic Query for first level people:

g.V(1).hasLabel("person").repeat(both()).times(1).emit(hasLabel("person")).hasLabel("person").values("name")

Generic Query for second level/hop software:

g.V(1).hasLabel("person").repeat(both()).times(2).emit(hasLabel("software")).hasLabel("software").values("name")

Attempt to merge above two queries:

g.V(1).hasLabel("person").repeat(both()).times(1).emit(hasLabel("person")).hasLabel("person").repeat(both()).times(2).emit(hasLabel("software")).hasLabel("software").values("name")

I didn't really understand how union works, because its not merging data.

g.V(1).union().V(2)
g.V(1).union(V(2))

Best I got till now is, but I want some ability to do like (marko connected to person AND/OR marko connected to software):

gremlin> g.V(1).store('x').V(2).store('y').cap('x', 'y')
==>[x:[v[1]],y:[v[2]]]
Srinath Ganesh
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1 Answers1

2

This for first level: 

gremlin> g.V(1).hasLabel("person").as("from", "to1", "to2")
            .repeat(both()).times(1).emit(hasLabel("person")).hasLabel("person").as("to1")
            .select("from")
            .repeat(both()).times(1).emit(hasLabel("software")).hasLabel("software").as("to2")
            .project("from", "person", "software")
            .by(select("from").by("name"))
            .by(select("to1").by("name"))
            .by(select("to2").by("name"))

Result:

==>[from:marko,person:vadas,software:lop]
==>[from:marko,person:josh,software:lop]

For multilevel increse the value of times

Ravindra Gupta
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