lostluck commented on a change in pull request #10991: [BEAM-3301] Refactor
DoFn validation & allow specifying main inputs.
URL: https://github.com/apache/beam/pull/10991#discussion_r388424329
##########
File path: sdks/go/pkg/beam/core/graph/fn.go
##########
@@ -209,21 +209,74 @@ func (f *DoFn) RestrictionT() *reflect.Type {
// a KV or not based on the other signatures (unless we're more loose about
which
// sideinputs are present). Bind should respect that.
+// The following constants prefixed with "Main" represent possible numbers of
+// DoFn main inputs for DoFn construction and validation. Any value not defined
+// here is an invalid number of main inputs.
+const (
+ MainUnknown = -1 // The number of main inputs is unknown for DoFn
validation.
Review comment:
Consider if it is necessary to have an unknown constant exported at all?
Even in the unexported type version of this code, Unknown a side effect of not
passing the NumMainInput hint, rather than something a user should explicitly
set.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
With regards,
Apache Git Services
