public void cancelRowUpdates() throws SQLException {
      // make sure we are on a row
      checkCursor();

      // don't want this to happen...
      if (onInsertRow == true) {
         throw new SQLException(resBundle.handleGetObject("cachedrowsetimpl.invalidcp").toString());
      }

      Row currentRow = (Row)getCurrentRow();
      if (currentRow.getUpdated() == true) {
         currentRow.clearUpdated();
         notifyRowChanged();
      }
   }
Rolls back any updates made to the current row of this
<code>StreamingRowSetImpl</code> object and notifies listeners that
a row has changed.  To have an effect, this method
must be called after an <code>updateXXX</code> method has been
called and before the method <code>updateRow</code> has been called.
If no updates have been made or the method <code>updateRow</code>
has already been called, this method has no effect.

@throws SQLException if the cursor is on the insert row, before the
           first row, or after the last row
src/main/java/org/replicadb/rowset/StreamingRowSetImpl.java