@Override
  public boolean filterRowKey(Cell firstRowCell) {
    if (compareRow(getCompareOperator(), this.comparator, firstRowCell)) {
      this.filterOutRow = true;
    }
    return this.filterOutRow;
  }
Constructor.
@param op            the compare op for row matching
@param rowComparator the comparator for row matching
hbase-client/src/main/java/org/apache/hadoop/hbase/filter/RowFilter.java