Gremlin: inject() and has() not working together as expected

Question

I need to create vertices without duplication based on a list passed to inject(), the list is very large so I need to use inject(). I tried this but it didn't work:

g.inject(["Macka", "Pedro", "Albert"]).unfold().map(
    coalesce(
        V().has("name", identity()),
        addV("user").property("name", identity())
    )
)

You can try here: https://gremlify.com/765qiupxinw

Why this doesn't work? It seems that V().has() is returning all vertices, why?

Answer 1

I think in this case you should use where step and not has:

g.inject(["Macka", "Pedro", "Albert"]).unfold().as('n').map(
    coalesce(
        V().where(eq('n')).by('name').by(),
        addV("user").property("name", identity())
    )
)

example: https://gremlify.com/06q0zxgd2uam