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.column.filter.range.evaluator;
  
  import org.apache.asterix.column.filter.IColumnFilterEvaluator;
  import org.apache.asterix.column.filter.range.IColumnRangeFilterEvaluatorFactory;
  
  public abstract class AbstractColumnFilterEvaluatorFactory implements IColumnRangeFilterEvaluatorFactory {
      private static final long serialVersionUID = 1436531448052787426L;
  
      protected final IColumnRangeFilterEvaluatorFactory left;
      protected final IColumnRangeFilterEvaluatorFactory right;
  
      public AbstractColumnFilterEvaluatorFactory(IColumnRangeFilterEvaluatorFactory left,
              IColumnRangeFilterEvaluatorFactory right) {
          this.left = left;
          this.right = right;
      }
  
      protected abstract String getOp();
  
      @Override
      public String toString() {
          return left.toString() + " " + getOp() + " " + right.toString();
      }
  
      static abstract class AbstractFilterEvaluator implements IColumnFilterEvaluator {
          protected final IColumnFilterEvaluator left;
          protected final IColumnFilterEvaluator right;
  
          AbstractFilterEvaluator(IColumnFilterEvaluator left, IColumnFilterEvaluator right) {
              this.left = left;
              this.right = right;
          }
      }
  }
  