beyond1920 commented on a change in pull request #8035:
[FLINK-11975][table-planner-blink] Support to run a sql query : 'SELECT * FROM
(VALUES (1, 2, 3)) T(a, b, c)'
URL: https://github.com/apache/flink/pull/8035#discussion_r268554887
##########
File path:
flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/plan/nodes/physical/batch/BatchExecSink.scala
##########
@@ -36,10 +46,99 @@ class BatchExecSink[T](
sink: TableSink[T],
sinkName: String)
extends Sink(cluster, traitSet, inputRel, sink, sinkName)
- with BatchPhysicalRel {
+ with BatchPhysicalRel
+ with BatchExecNode[Any] {
override def copy(traitSet: RelTraitSet, inputs: util.List[RelNode]):
RelNode = {
new BatchExecSink(cluster, traitSet, inputs.get(0), sink, sinkName)
}
+ /**
+ * Returns [[DamBehavior]] of this node.
+ */
+ override def getDamBehavior: DamBehavior = DamBehavior.PIPELINED
+
+ /**
+ * Returns an array of this node's inputs. If there are no inputs,
+ * returns an empty list, not null.
+ *
+ * @return Array of this node's inputs
+ */
+ override def getInputNodes: util.List[ExecNode[BatchTableEnvironment, _]] = {
+ List(getInput.asInstanceOf[ExecNode[BatchTableEnvironment, _]])
+ }
+
+ /**
+ * Internal method, translates this node into a Flink operator.
+ *
+ * @param tableEnv The [[BatchTableEnvironment]] of the translated Table.
+ */
+ override protected def translateToPlanInternal(
+ tableEnv: BatchTableEnvironment): StreamTransformation[Any] = {
+ val convertTransformation = sink match {
+ case _: BatchTableSink[T] =>
+ translate(withChangeFlag = false, tableEnv)
+ case streamTableSink: DataStreamTableSink[T] =>
+ translate(withChangeFlag = streamTableSink.withChangeFlag, tableEnv)
+ case _ =>
+ throw new TableException("Only Support BatchTableSink or
BatchCompatibleStreamTableSink")
+ }
+ // In case of table to bounded stream through
BatchTableEnvironment#toBoundedStream, we insert a
+ // DataStreamTableSink then wrap it as a LogicalSink, there is no real
batch table sink, so
+ // we do not need to invoke TableSink#emitBoundedStream and set resource,
just a translation to
+ // StreamTransformation is ok.
+ val resultTransformation = if (sink.isInstanceOf[DataStreamTableSink[T]]) {
+ convertTransformation
+ } else {
+ val stream = new DataStream(tableEnv.streamEnv, convertTransformation)
+ emitBoundedStreamSink(stream, tableEnv).getTransformation
+ }
+ resultTransformation.asInstanceOf[StreamTransformation[Any]]
+ }
+
+ private def emitBoundedStreamSink(
+ boundedStream: DataStream[T],
+ tableEnv: BatchTableEnvironment): DataStreamSink[_] = {
+ val config = tableEnv.getConfig
+ sink match {
+ case sinkBatch: BatchTableSink[T] =>
+ sinkBatch.emitBoundedStream(boundedStream, config,
tableEnv.streamEnv.getConfig)
+
+ case _ => throw new TableException("BatchTableSink or
CompatibleStreamTableSink " +
+ "required to emit batch exec Table")
+ }
+ }
+
+ /**
+ * Translates a logical [[RelNode]] into a [[StreamTransformation]].
+ * Converts to target type if necessary.
+ *
+ * @return The [[StreamTransformation]] that corresponds to the translated
[[Table]].
+ */
+ private def translate(
Review comment:
done
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