org.apache.flink.table.planner.plan.nodes.physical.stream.StreamPhysicalExchange.scala Maven / Gradle / Ivy
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.flink.table.planner.plan.nodes.physical.stream
import org.apache.flink.table.planner.calcite.FlinkTypeFactory
import org.apache.flink.table.planner.plan.nodes.exec.stream.StreamExecExchange
import org.apache.flink.table.planner.plan.nodes.exec.{InputProperty, ExecNode}
import org.apache.flink.table.planner.plan.nodes.physical.common.CommonPhysicalExchange
import org.apache.calcite.plan.{RelOptCluster, RelTraitSet}
import org.apache.calcite.rel.{RelDistribution, RelNode}
/**
* Stream physical RelNode for [[org.apache.calcite.rel.core.Exchange]].
*/
class StreamPhysicalExchange(
cluster: RelOptCluster,
traitSet: RelTraitSet,
relNode: RelNode,
relDistribution: RelDistribution)
extends CommonPhysicalExchange(cluster, traitSet, relNode, relDistribution)
with StreamPhysicalRel {
override def requireWatermark: Boolean = false
override def copy(
traitSet: RelTraitSet,
newInput: RelNode,
newDistribution: RelDistribution): StreamPhysicalExchange = {
new StreamPhysicalExchange(cluster, traitSet, newInput, newDistribution)
}
override def translateToExecNode(): ExecNode[_] = {
new StreamExecExchange(
InputProperty.builder.requiredDistribution(getRequiredDistribution).build,
FlinkTypeFactory.toLogicalRowType(getRowType),
getRelDetailedDescription)
}
}