org.apache.flink.table.planner.plan.nodes.physical.batch.BatchPhysicalTableSourceScan.scala Maven / Gradle / Ivy
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This module bridges Table/SQL API and runtime. It contains
all resources that are required during pre-flight and runtime
phase. The content of this module is work-in-progress. It will
replace flink-table-planner once it is stable. See FLINK-11439
and FLIP-32 for more details.
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.table.planner.plan.nodes.physical.batch
import org.apache.flink.table.planner.calcite.FlinkTypeFactory
import org.apache.flink.table.planner.plan.nodes.exec.ExecNode
import org.apache.flink.table.planner.plan.nodes.exec.batch.BatchExecTableSourceScan
import org.apache.flink.table.planner.plan.nodes.exec.spec.DynamicTableSourceSpec
import org.apache.flink.table.planner.plan.nodes.physical.common.CommonPhysicalTableSourceScan
import org.apache.flink.table.planner.plan.schema.TableSourceTable
import org.apache.flink.table.planner.plan.utils.FlinkRelOptUtil
import org.apache.calcite.plan._
import org.apache.calcite.rel.RelNode
import org.apache.calcite.rel.hint.RelHint
import org.apache.calcite.rel.metadata.RelMetadataQuery
import java.util
/**
* Batch physical RelNode to read data from an external source defined by a
* bounded [[org.apache.flink.table.connector.source.ScanTableSource]].
*/
class BatchPhysicalTableSourceScan(
cluster: RelOptCluster,
traitSet: RelTraitSet,
hints: util.List[RelHint],
tableSourceTable: TableSourceTable)
extends CommonPhysicalTableSourceScan(cluster, traitSet, hints, tableSourceTable)
with BatchPhysicalRel {
override def copy(traitSet: RelTraitSet, inputs: util.List[RelNode]): RelNode = {
new BatchPhysicalTableSourceScan(cluster, traitSet, getHints, tableSourceTable)
}
override def computeSelfCost(planner: RelOptPlanner, mq: RelMetadataQuery): RelOptCost = {
val rowCnt = mq.getRowCount(this)
if (rowCnt == null) {
return null
}
val cpu = 0
val rowSize = mq.getAverageRowSize(this)
val size = rowCnt * rowSize
planner.getCostFactory.makeCost(rowCnt, cpu, size)
}
override def translateToExecNode(): ExecNode[_] = {
val tableSourceSpec = new DynamicTableSourceSpec(
tableSourceTable.tableIdentifier,
tableSourceTable.catalogTable,
util.Arrays.asList(tableSourceTable.abilitySpecs: _*))
tableSourceSpec.setTableSource(tableSourceTable.tableSource)
val tableConfig = FlinkRelOptUtil.getTableConfigFromContext(this)
tableSourceSpec.setReadableConfig(tableConfig.getConfiguration)
new BatchExecTableSourceScan(
tableSourceSpec,
FlinkTypeFactory.toLogicalRowType(getRowType),
getRelDetailedDescription)
}
}