Conditional mutation

Users GraphQL
1

Hi there!
How to say:
If doc X has field Y with value equal to Z do this mutation A
otherwise do mutation B.
Thanks

2

Something like this

upsert {
  query {
    v as var(func: type(Doc)) @filter(eq(fieldY, "Z"))
  }

  mutation @if(eq(len(v), 1)) {
    set {
      uid(v) <mutation> "A" .
    }
  }
  mutation @if(eq(len(v), 0)) {
    set {
      uid(v) <mutation> "B" .
    }
  }
}

BTW, In GraphQL I think it isn’t possible. You should use lambda in order to use DQL there.

3

A followup question:
Either A and B would be atomic with the containing Transaction?
Would they get same T_start and T_comm ?
Thanks

4

What do you mean by atomic? That query is a single transaction.

5

Ok then, alright!!