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_r238713688
##########
File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/codegen/MatchCodeGenerator.scala
##########
@@ -533,45 +618,49 @@ class MatchCodeGenerator(
reusablePerRecordStatements += codeForAgg
val defaultValue = primitiveDefaultValue(singleResultType)
- val codeForSingleAgg =
+ val codeForSingleAgg = if (nullCheck) {
j"""
|boolean $singleResultNullTerm;
- |$singleResultTypeTerm $singleResultTerm = ($singleResultTypeTerm)
$resultRowTerm
- | .getField(${aggregates.size});
- |if ($singleResultTerm != null) {
+ |$primitiveSingleResultTypeTerm $singleResultTerm;
+ |if ($resultRowTerm.getField(${aggregates.size}) != null) {
+ | $singleResultTerm = ($boxedSingleResultTypeTerm) $resultRowTerm
+ | .getField(${aggregates.size});
| $singleResultNullTerm = false;
|} else {
| $singleResultNullTerm = true;
| $singleResultTerm = $defaultValue;
|}
|""".stripMargin
+ } else {
+ j"""
+ |boolean $singleResultNullTerm = false;
Review comment:
This line can be dropped. The null term is not evaluated if nullCheck is
disabled.
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