twalthr commented on a change in pull request #7177: [FLINK-7599] [table]
Support for aggregates in MATCH_RECOGNIZE
URL: https://github.com/apache/flink/pull/7177#discussion_r238711587
##########
File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/MatchCodeGenerator.scala
##########
@@ -504,24 +588,25 @@ class MatchCodeGenerator(
private val rowTypeTerm = "org.apache.flink.types.Row"
- def getOrAddAggregation(call: RexCall): GeneratedExpression = {
- reusableInputUnboxingExprs.get((call.toString, 0)) match {
+ def generateAggAccess(aggCall: RexCall): GeneratedExpression = {
+ reusableInputUnboxingExprs.get((aggCall.toString, 0)) match {
case Some(expr) =>
expr
case None =>
- val exp: GeneratedExpression = generateAggAccess(call)
- aggregates += call
- reusableInputUnboxingExprs((call.toString, 0)) = exp
+ val exp: GeneratedExpression = doGenerateAggAccess(aggCall)
Review comment:
The naming is still not perfect here. What is the difference between
`generateAggAccess` and `doGenerateAggAccess`? How about
`generateDeduplicatedAggAccess` and `generateAggAccess`?
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