How to implement custom id to replace uid, and different nodes are associated according to id

Users Dgraph
1

I plan to generate a unique id to replace uid based on twitter’s snowflake algorithm. And all nodes are associated according to id, not uid.

please help me.

2

You can’t replace uids because that is internally used by dgraph for processing. You can look into assigning xids to each node based on your algorithm.

3

@Anurag
Oh,so sad. If I give up dgraph in the future, maybe this is one of the reasons…

How to associate between xid?

4

xid can be treated like just another predicate. From the docs here

<0x123> <xid> "http://schema.org/Person" .
5

Yeah. I know, I mean is it possible to create edge by xid instead of uid ?

6

Not directly but you can search for nodes with some xid, save uid of those nodes in a variable and then create edges using that variable. See section: External IDs and Upsert Block in the docs.

   upsert {
      query {
        var(func: eq(SOME_XID, "Robin Wright")) {
          Person as uid
        }
      }
      mutation {
          set {
           uid(Person) <xid> SomeXID .
           uid(Person) <edge1> something something .
           uid(Person) <edge2> something something .
           uid(Person) <dgraph.type> SomeType .
          }
      }
    }
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