org.apache.flink.table.planner.plan.nodes.physical.stream.StreamPhysicalIntermediateTableScan.scala Maven / Gradle / Ivy
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package org.apache.flink.table.planner.plan.nodes.physical.stream
import org.apache.flink.table.api.TableException
import org.apache.flink.table.planner.plan.nodes.common.CommonIntermediateTableScan
import org.apache.flink.table.planner.plan.nodes.exec.ExecNode
import org.apache.flink.table.planner.plan.schema.IntermediateRelTable
import org.apache.calcite.plan.{RelOptCluster, RelOptTable, RelTraitSet}
import org.apache.calcite.rel.RelNode
import org.apache.calcite.rel.`type`.RelDataType
import java.util
/**
* Stream physical TableScan that wraps [[IntermediateRelTable]]
*/
class StreamPhysicalIntermediateTableScan(
cluster: RelOptCluster,
traitSet: RelTraitSet,
table: RelOptTable,
outputRowType: RelDataType)
extends CommonIntermediateTableScan(cluster, traitSet, table)
with StreamPhysicalRel {
override def requireWatermark: Boolean = false
override def deriveRowType(): RelDataType = outputRowType
override def copy(traitSet: RelTraitSet, inputs: util.List[RelNode]): RelNode = {
new StreamPhysicalIntermediateTableScan(cluster, traitSet, getTable, outputRowType)
}
override def translateToExecNode(): ExecNode[_] = {
throw new TableException(
"This should not happen. " +
"\nThis physical rel is the intermediate result of the optimization," +
" and it can not be translated to ExecNode.")
}
}