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Gremlin query: How to AND & OR relations?

Say for example I have edges with the types A, B, C or D.

How do I traverse using AND and OR on these edge-types?

Say I want to traverse from node X by ( in(A) AND out(B) ) OR ( both(C) AND out(D) )

The result I expect are all the nodes that have atleast one A-edge that goes to X AND atleast one B-edge that goes from X, OR atleast one C-edge that either goes from or to X AND atleast one D-edge that goes from X.

How do I write a Gremlin query to do this in a general matter? Thank you so much for any help!

Solution

  • I figured it out!

    g.V().union(

  // in(A) AND out(B)
  match(
    __.as('1').in('A').as('2'),
    __.as('1').out('B').as('2'))
  .select('2'),

  // OR

  // both(C) AND out(D)
  match(
    __.as('1').both('C').as('2'),
    __.as('1').out('D').as('2'))
  .select('2'))

// Delete duplicates
.dedup()