Gremlin set property operations

Question

I have below mentioned dataset

g.addV('testvertex').property(id, 'user1').property(set, 'states','TX').property(set,'states','CA').property(set,'states','AL').property(set,'states','AK')

1. how do I find the count of states 'user1' has lived in?
2. if 'user1' ever lived in 'IA' and 'KS' ?
3. how do i drop 'TX' from states set ?

Answer 1

how do I find the count of states 'user1' has lived in?

g.V().values('states').count()

if 'user1' ever lived in 'IA' and 'KS' ?

g.V().has(id,'user1').has('states', within('IA','KS'))

how do i drop 'TX' from states set ?

g.V().has(id,'user1').
  properties('states').hasValue('TX').drop()