org.apache.flink.table.planner.plan.trait.FlinkRelDistributionTraitDef.scala Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of flink-table-planner-blink_2.11 Show documentation
Show all versions of flink-table-planner-blink_2.11 Show documentation
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.`trait`
import org.apache.calcite.plan.{RelOptPlanner, RelTraitDef}
import org.apache.calcite.rel.RelNode
class FlinkRelDistributionTraitDef extends RelTraitDef[FlinkRelDistribution] {
override def getDefault: FlinkRelDistribution = FlinkRelDistribution.DEFAULT
override def getTraitClass: Class[FlinkRelDistribution] = classOf[FlinkRelDistribution]
override def getSimpleName: String = this.getClass.getSimpleName
override def canConvert(
planner: RelOptPlanner,
fromTrait: FlinkRelDistribution,
toTrait: FlinkRelDistribution): Boolean = true
override def convert(
planner: RelOptPlanner,
rel: RelNode,
toTrait: FlinkRelDistribution,
allowInfiniteCostConverters: Boolean): RelNode = {
throw new RuntimeException("Don't invoke FlinkRelDistributionTraitDef.convert directly!")
}
}
object FlinkRelDistributionTraitDef {
val INSTANCE = new FlinkRelDistributionTraitDef
}