@Override
  public ReturnCode filterCell(final Cell c) {
    if (compareQualifier(getCompareOperator(), this.comparator, c)) {
      return ReturnCode.SKIP;
    }
    return ReturnCode.INCLUDE;
  }
Constructor.
@param op                  the compare op for column qualifier matching
@param qualifierComparator the comparator for column qualifier matching
hbase-client/src/main/java/org/apache/hadoop/hbase/filter/QualifierFilter.java