dianfu commented on a change in pull request #7189: [FLINK-10597][table] 
Enabled UDFs support in MATCH_RECOGNIZE
URL: https://github.com/apache/flink/pull/7189#discussion_r237722370
 
 

 ##########
 File path: 
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/runtime/match/PatternSelectFunctionRunner.scala
 ##########
 @@ -35,20 +36,26 @@ import org.apache.flink.util.Collector
 class PatternSelectFunctionRunner(
     name: String,
     code: String)
-  extends PatternFlatSelectFunction[Row, CRow]
-  with Compiler[PatternSelectFunction[Row, Row]]
+  extends RichPatternFlatSelectFunction[Row, CRow]
 
 Review comment:
   @dawidwys I have rethought about this issue and what about always generating 
a `PatternFlatSelectFunction` no matter `ONE ROW PER MATCH` or `ALL ROWS PER 
MATCH` is specified? 

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