Is it possible to write a join bolt that joins tuples from two different bolts, and automatically exposes the correct output fields ?
For example:
A--(x)-->Join--(x,y)
B--(y)----^
Given bolt A that declares ("x") as an output field, and bolt B that declares
("y") as an output field, how would I code a reusable Join bolt that
auto-magically returns ("x","y") as the output field.
thanks,
Itai
