org.apache.flink.table.planner.plan.nodes.physical.stream.StreamPhysicalTemporalSort.scala Maven / Gradle / Ivy
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*
* 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.{InputProperty, ExecNode}
import org.apache.flink.table.planner.plan.nodes.exec.stream.StreamExecTemporalSort
import org.apache.flink.table.planner.plan.utils.{RelExplainUtil, SortUtil}
import org.apache.calcite.plan.{RelOptCluster, RelTraitSet}
import org.apache.calcite.rel._
import org.apache.calcite.rel.core.Sort
import org.apache.calcite.rex.RexNode
import scala.collection.JavaConversions._
/**
* Stream physical RelNode for time-ascending-order [[Sort]] without `limit`.
*
* @see [[StreamPhysicalRank]] which must be with `limit` order by.
* @see [[StreamPhysicalSort]] which can be used for testing now, its sort key can be any type.
*/
class StreamPhysicalTemporalSort(
cluster: RelOptCluster,
traitSet: RelTraitSet,
inputRel: RelNode,
sortCollation: RelCollation)
extends Sort(cluster, traitSet, inputRel, sortCollation)
with StreamPhysicalRel {
override def requireWatermark: Boolean = false
override def copy(
traitSet: RelTraitSet,
input: RelNode,
newCollation: RelCollation,
offset: RexNode,
fetch: RexNode): Sort = {
new StreamPhysicalTemporalSort(cluster, traitSet, input, newCollation)
}
override def explainTerms(pw: RelWriter): RelWriter = {
pw.input("input", getInput())
.item("orderBy", RelExplainUtil.collationToString(sortCollation, getRowType))
}
override def translateToExecNode(): ExecNode[_] = {
new StreamExecTemporalSort(
SortUtil.getSortSpec(sortCollation.getFieldCollations),
InputProperty.DEFAULT,
FlinkTypeFactory.toLogicalRowType(getRowType),
getRelDetailedDescription
)
}
}