Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3520#discussion_r106032363
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/nodes/dataset/DataSetCalc.scala
---
@@ -42,63 +41,40 @@ class DataSetCalc(
traitSet: RelTraitSet,
input: RelNode,
rowRelDataType: RelDataType,
- private[flink] val calcProgram: RexProgram, // for tests
+ calcProgram: RexProgram,
ruleDescription: String)
- extends SingleRel(cluster, traitSet, input)
+ extends Calc(cluster, traitSet, input, calcProgram)
--- End diff --
Why are you changing this?
I think we had this at some point in time, but changed `Calc` to
`SingleRel`. Can't remember why though. Maybe @twalthr knows why.
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