[GitHub] [flink] KurtYoung commented on a change in pull request #8109: [FLINK-12017][table-planner-blink] Support translation from Rank/Deduplicate to StreamTransformation

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KurtYoung commented on a change in pull request #8109: [FLINK-12017][table-planner-blink] Support translation from Rank/Deduplicate to StreamTransformation
URL: https://github.com/apache/flink/pull/8109#discussion_r272879175
 
 

 ##########
 File path: flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/plan/nodes/physical/stream/StreamExecExchange.scala
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 @@ -50,4 +65,41 @@ class StreamExecExchange(
       newDistribution: RelDistribution): StreamExecExchange = {
     new StreamExecExchange(cluster, traitSet, newInput, newDistribution)
   }
+
+  //~ ExecNode methods -----------------------------------------------------------
+
+  override def getInputNodes: util.List[ExecNode[StreamTableEnvironment, _]] = {
+    List(getInput.asInstanceOf[ExecNode[StreamTableEnvironment, _]])
+  }
+
+  override protected def translateToPlanInternal(
+      tableEnv: StreamTableEnvironment): StreamTransformation[BaseRow] = {
+    val inputTransform = getInputNodes.get(0).translateToPlan(tableEnv)
+                         .asInstanceOf[StreamTransformation[BaseRow]]
 
 Review comment:
   proper indent

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