flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/cost/DataSetCostFactory.scala

/*
 * 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.plan.cost

import org.apache.calcite.plan.{RelOptCost, RelOptCostFactory}

/**
  * This class is based on Apache Calcite's `org.apache.calcite.plan.volcano.VolcanoCost#Factory`.
  */
class DataSetCostFactory extends RelOptCostFactory {

  override def makeCost(dRows: Double, dCpu: Double, dIo: Double): RelOptCost = {
    new DataSetCost(dRows, dCpu, dIo)
  }

  override def makeHugeCost: RelOptCost = {
    DataSetCost.Huge
  }

  override def makeInfiniteCost: RelOptCost = {
    DataSetCost.Infinity
  }

  override def makeTinyCost: RelOptCost = {
    DataSetCost.Tiny
  }

  override def makeZeroCost: RelOptCost = {
    DataSetCost.Zero
  }
}