CODEWITHSUNDEEP
gremlin
James Render
James Render

Reputation: 1600

How do I add a count result to a valuemap?

I've worked out a traversal but would like to change how the result is structured to make it cleaner to extract in my Java code.

I want all the group vertices that my user is a member of along with a count of the group's total membership. I've used valueMap as that makes it nice to extract in the client Java

g.V().has('user','name','james').out('member').group().by(valueMap(true, 'name','image')).by(inE('member').count()).unfold()

which gives me

==>{image=[images/groups/group6.jpg], label=group, name=[Boxing Lovers], id=c1db7d33-a24c-4981-8ee8-950371789637}=10
==>{image=[images/groups/group4.jpg], label=group, name=[Hiking Disciples], id=d2da3866-1922-4c00-8895-21ab2e099243}=11.

How would I add the membership count to the HashMap with the group details, like below?

==>{image=[images/groups/group6.jpg], label=group, name=[Boxing Lovers], id=c1db7d33-a24c-4981-8ee8-950371789637, membership=10}
==>{image=[images/groups/group4.jpg], label=group, name=[Hiking Disciples], id=d2da3866-1922-4c00-8895-21ab2e099243, membership=11}

Upvotes: 1

Views: 204

Answers (1)

Kelvin Lawrence
Kelvin Lawrence

Reputation: 14391

Rather than use valueMap you could use project. Here's an example using the air-routes graph.

gremlin> g.V().has('region','US-TX').
               project('id','label','city','count').
                 by(id).
                 by(label).
                 by('city').
                 by(out().count()).
               limit(3)
==>[id:3,label:airport,city:Austin,count:80]
==>[id:8,label:airport,city:Dallas,count:250]
==>[id:11,label:airport,city:Houston,count:197]

Upvotes: 1

Related Questions