/**
    * 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.hbase.regionserver.querymatcher;
  
  import java.io.IOException;
  
  import org.apache.hadoop.hbase.Cell;
  import org.apache.hadoop.hbase.CellUtil;
  import org.apache.hadoop.hbase.classification.InterfaceAudience;
  import org.apache.hadoop.hbase.regionserver.DeleteTracker;
  import org.apache.hadoop.hbase.regionserver.ScanInfo;
  
  /**
   * Query matcher for minor compaction.
   */
  @InterfaceAudience.Private
  public class MinorCompactionScanQueryMatcher extends CompactionScanQueryMatcher {
  
    public MinorCompactionScanQueryMatcher(ScanInfo scanInfo, DeleteTracker deletes,
        long readPointToUse, long oldestUnexpiredTS, long now) {
      super(scanInfo, deletes, readPointToUse, oldestUnexpiredTS, now);
    }
  
    @Override
    public MatchCode match(Cell cell) throws IOException {
      MatchCode returnCode = preCheck(cell);
      if (returnCode != null) {
        return returnCode;
      }
      long mvccVersion = cell.getSequenceId();
      byte typeByte = cell.getTypeByte();
      if (CellUtil.isDelete(typeByte)) {
        if (mvccVersion > maxReadPointToTrackVersions) {
          // we should not use this delete marker to mask any cell yet.
          return MatchCode.INCLUDE;
        }
        trackDelete(cell);
        return MatchCode.INCLUDE;
      }
      returnCode = checkDeleted(deletes, cell);
      if (returnCode != null) {
        return returnCode;
      }
      // Skip checking column since we do not remove column during compaction.
      return columns.checkVersions(cell.getQualifierArray(), cell.getQualifierOffset(),
        cell.getQualifierLength(), cell.getTimestamp(), typeByte,
        mvccVersion > maxReadPointToTrackVersions);
    }
  }