gistfile1.txt

gremlin> g.addV('Person').property('name','Sam')
==>v[16]
gremlin> g
==>graphtraversalsource[tinkergraph[vertices:1 edges:0], standard]
gremlin> g.inject(['Sam','Peter','Frank']).
......1>   unfold().as('find').
......2>   V().as('p').
......3>   coalesce(
......4>     where(eq('p')).
......5>       by(select('find')).
......6>       by('name'),constant(1))
==>v[16]
==>1
==>1

gremlin> g.inject(['Sam','Peter','Frank']).
......1>   unfold().as('find').
......2>   V().as('p').
......3>   coalesce(
......4>     where(eq('p')).
......5>       by(select('find')).
......6>       by('name'),select('find'))
==>v[16]
==>Peter
==>Frank

gremlin> g.inject(['Sam','Peter','Frank']).
......1>   unfold().as('find').
......2>   V().as('p').
......3>   coalesce(
......4>     where(eq('p')).
......5>       by(select('find')).
......6>       by('name'),addV('Person').property('name',select('find'))
......7> )
==>v[16]
==>v[18]
==>v[20]
==>v[22]

gremlin> g.V().valueMap(true)
==>[id:16,label:Person,name:[Sam]]
==>[id:18,label:Person,name:[Peter]]
==>[id:20,label:Person,name:[Frank]]
==>[id:22,label:Person,name:[Frank]]

gistfile2.txt

g = TinkerGraph.open().traversal()
g.addV('Person').property('name','Sam')
g.inject(['Sam','Peter','Frank']).
  unfold().as('find').
  V().as('p').
  coalesce(where(eq('p')).by(select('find')).by('name'),
           constant(1))
g.inject(['Sam','Peter','Frank']).
  unfold().as('find').
  V().as('p').
  coalesce(where(eq('p')).by(select('find')).by('name'),select('find'))
g.inject(['Sam','Peter','Frank']).
  unfold().as('find').
  V().as('p').
  coalesce(where(eq('p')).by(select('find')).by('name'),
           addV('Person').property('name',select('find'))) 
g.V().valueMap(true)    


g = TinkerGraph.open().traversal()
g.addV('Person').property('name','Sam')
g.inject(['Sam','Peter','Frank']).
  unfold().as('find').
  V().as('p').
  coalesce(where(eq('p')).by(select('find')).by('name'),
           addV('Person').property('name',select('find'))).profile()