gremlin python - add multiple but an unknown number of properties to a vertex

Question

I want to add more than one property to a vertex, but from the outset do not explicitly know what those properties might be. For example, say for one person to be added as v

Answer 1

You can inject your maps/dictionaries into the traversal, create a vertex for each dictionary and then go through all dictionary/map-entries and set them as properties. In Gremlin that looks like this:

g.inject(persons).unfold().as('person').
  addV('person').as('v').
  sideEffect(select('person').unfold().as('kv').
             select('v').
               property(select('kv').by(keys), select('kv').by(values))).
  iterate()

Example:

gremlin> persons = [["id":1,"first_name":"bob","age":25,"height": 177]
......1>           ,["id":2,"first_name":"joe","surname":"bloggs",
                       "occupation":"lawyer","birthday":"12 September"]]
==>[id:1,first_name:bob,age:25,height:177]
==>[id:2,first_name:joe,surname:bloggs,occupation:lawyer,birthday:12 September]

gremlin> g = TinkerGraph.open().traversal()
==>graphtraversalsource[tinkergraph[vertices:0 edges:0], standard]
gremlin> g.inject(persons).unfold().as('person').
......1>   addV('person').as('v').
......2>   sideEffect(select('person').unfold().as('kv').
......3>              select('v').
......4>                property(select('kv').by(keys), select('kv').by(values))).
......5>    valueMap()
==>[id:[1],first_name:[bob],age:[25],height:[177]]
==>[birthday:[12 September],occupation:[lawyer],surname:[bloggs],id:[2],first_name:[joe]]