/**
  * Count the number of rows specified by a given set of criteria. This can be used to make
  * decisions as to whether a query based on those rows will complete in an acceptable amount of
  * time.
  *
  * @param connectionName is the name of the connection.
  * @param criteria is the filtering criteria, which selects the records of interest.
  * @return the number of rows included by the criteria.
  */
 public long countHistoryRows(String connectionName, FilterCriteria criteria)
     throws ManifoldCFException {
   return historyManager.countHistoryRows(connectionName, criteria);
 }