org.apache.flink.table.plan.rules.physical.stream.StreamExecWatermarkAssignerRule.scala Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.flink.table.plan.rules.physical.stream
import org.apache.calcite.plan.{RelOptRule, RelTraitSet}
import org.apache.calcite.rel.RelNode
import org.apache.calcite.rel.convert.ConverterRule
import org.apache.flink.table.plan.nodes.FlinkConventions
import org.apache.flink.table.plan.nodes.logical.FlinkLogicalWatermarkAssigner
import org.apache.flink.table.plan.nodes.physical.stream.StreamExecWatermarkAssigner
class StreamExecWatermarkAssignerRule
extends ConverterRule(
classOf[FlinkLogicalWatermarkAssigner],
FlinkConventions.LOGICAL,
FlinkConventions.STREAM_PHYSICAL,
"StreamExecWatermarkAssignerRule") {
override def convert(rel: RelNode): RelNode = {
val logicalNode = rel.asInstanceOf[FlinkLogicalWatermarkAssigner]
val convertInput = RelOptRule.convert(logicalNode.getInput, FlinkConventions.STREAM_PHYSICAL)
val traitSet: RelTraitSet = rel.getTraitSet.replace(FlinkConventions.STREAM_PHYSICAL)
StreamExecWatermarkAssigner.createRowTimeWatermarkAssigner(
logicalNode.getCluster,
traitSet,
convertInput,
logicalNode.rowtimeField,
logicalNode.watermarkOffset)
}
}
object StreamExecWatermarkAssignerRule {
val INSTANCE = new StreamExecWatermarkAssignerRule
}