/*
 * 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
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 */

package org.apache.flink.table.plan.optimize

import org.apache.calcite.rel.RelNode
import org.apache.calcite.sql2rel.RelDecorrelator

/**
  * A FlinkOptimizeProgram that decorrelates a query.
  *
  * @tparam OC OptimizeContext
  */
class FlinkDecorrelateProgram[OC <: OptimizeContext] extends FlinkOptimizeProgram[OC] {

  def optimize(input: RelNode, context: OC): RelNode = {
    RelDecorrelator.decorrelateQuery(input)
  }

}