content: /*
   * 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.asterix.optimizer.rules.am.array;
  
  import java.util.List;
  
  import org.apache.commons.lang3.mutable.Mutable;
  import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException;
  import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator;
  import org.apache.hyracks.algebricks.core.algebra.base.IOptimizationContext;
  
  public interface IIntroduceAccessMethodRuleLocalRewrite<T> {
      /**
       * @param originalOperator Original operator before rewrite. Should be returned by {@code restoreBeforeRewrite}.
       * @param context Optimization context.
       * @return Null if no rewrite has occurred. Otherwise, a new plan from the given operator.
       * @throws AlgebricksException
       */
      T createOperator(T originalOperator, IOptimizationContext context) throws AlgebricksException;
  
      /**
       * @param afterOperatorRefs Operators after the original operator that should be restored after the rewrite.
       * @param context Optimization context.
       * @return The original operator given at {@code createOperator} time.
       * @throws AlgebricksException
       */
      T restoreBeforeRewrite(List<Mutable<ILogicalOperator>> afterOperatorRefs, IOptimizationContext context)
              throws AlgebricksException;
  }
  