/*
 * 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.hadoop.hive.ql.exec.vector.mapjoin.optimized;

import org.apache.hadoop.hive.ql.exec.JoinUtil.JoinResult;
import org.apache.hadoop.hive.ql.exec.persistence.MatchTracker;
import org.apache.hadoop.hive.ql.exec.persistence.MapJoinTableContainer.NonMatchedSmallTableIterator;
import org.apache.hadoop.hive.ql.exec.vector.mapjoin.hashtable.VectorMapJoinHashMapResult;
import org.apache.hadoop.hive.ql.exec.vector.mapjoin.hashtable.VectorMapJoinNonMatchedIterator;
import org.apache.hadoop.hive.ql.exec.vector.mapjoin.optimized.VectorMapJoinOptimizedHashMap.HashMapResult;

/**
 * The abstract class for vectorized non-match Small Table key iteration.
 */
public abstract class VectorMapJoinOptimizedNonMatchedIterator
    extends VectorMapJoinNonMatchedIterator {

  protected NonMatchedSmallTableIterator nonMatchedIterator;

  protected HashMapResult nonMatchedHashMapResult;

  public VectorMapJoinOptimizedNonMatchedIterator(MatchTracker matchTracker) {
    super(matchTracker);
  }

  @Override
  public boolean findNextNonMatched() {
    return nonMatchedIterator.isNext();
  }

  @Override
  public VectorMapJoinHashMapResult getNonMatchedHashMapResult() {
    if (nonMatchedHashMapResult == null) {
      nonMatchedHashMapResult = new HashMapResult(nonMatchedIterator.getHashMapResult());
    }
    nonMatchedHashMapResult.setJoinResult(JoinResult.MATCH);
    return nonMatchedHashMapResult;
  }
}