Conditional Forwarding

After processing the data, conditional forwarding is doable based on the Key returned in the result.

For example, there's a UDF used to process numbers, and forward the result to different vertices based on the number is even or odd. In this case, you can set the key to even or odd in each of the returned messages, and define the edges as below:

edges:
  - from: p1
    to: even-vertex
    conditions:
      keyIn:
        - even
  - from: p1
    to: odd-vertex
    conditions:
      keyIn:
        - odd

U+005C__ALL__

If the returned key is U+005C__ALL__, the data will be forwarded to all the connected vertices no matter what kind of conditions is defined in the spec.

U+005C__DROP__

If the returned key is U+005C__DROP__, the data will NOT be forwarded to any of the connected vertices no matter what kind of conditions is defined in the spec.