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.iterable.evaluator;
  
  import java.util.List;
  
  import org.apache.asterix.column.values.IColumnValuesReader;
  import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  
  public class ColumnIterableFilterEvaluator extends AbstractIterableFilterEvaluator {
  
      public ColumnIterableFilterEvaluator(IScalarEvaluator evaluator, List<IColumnValuesReader> readers) {
          super(evaluator, readers);
      }
  
      @Override
      public boolean evaluate() throws HyracksDataException {
          boolean result = false;
          // If next() returns false, it means there are no more matching tuples left.
          // Inside the next() function, tupleIndex and valueIndex are incremented.
          // This causes tupleIndex to eventually reach tupleCount,
          // indicating that all tuples have been processed.
          while (!result && next()) {
              result = inspect();
          }
          return result;
      }
  }
  