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.pushdown.descriptor;
  
  import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression;
  import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator;
  
  class AbstractDescriptor {
      protected final int scope;
      protected final ILogicalOperator subplanOperator;
      protected final ILogicalOperator operator;
      protected final ILogicalExpression expression;
      protected final int expressionIndex;
  
      public AbstractDescriptor(int scope, ILogicalOperator subplanOperator, ILogicalOperator operator,
              ILogicalExpression expression, int expressionIndex) {
          this.scope = scope;
          this.subplanOperator = subplanOperator;
          this.operator = operator;
          this.expression = expression;
          this.expressionIndex = expressionIndex;
      }
  
      public ILogicalOperator getOperator() {
          return operator;
      }
  
      public ILogicalExpression getExpression() {
          return expression;
      }
  
      public int getExpressionIndex() {
          return expressionIndex;
      }
  
      public int getScope() {
          return scope;
      }
  
      public boolean inSubplan() {
          return subplanOperator != null;
      }
  
      public ILogicalOperator getSubplanOperator() {
          return subplanOperator;
      }
  }
  