ackage vwl.business;

...

public class WinzerBO extends WinzerDO {

  protected void okToCommit() throws RefAssertionException {
    try {
      if (getName() == null || getLand() == null || 
              getRegion() == null || getName().equals("") || 
              getLand().equals("") || getRegion().equals(""))
            throw new RefAssertionException("",
                       new IncompleteDataException());

      WinzerQuery wq = new WinzerQuery();
      wq.setQueryName(getName());
      wq.setQueryRegion(getRegion());
      WinzerDO[] res = wq.getDOArray();
      if (res.length >= 1)
         throw new RefAssertionException("",
                      new NonUniqueDataException());
    } catch (DataObjectException doe) {
      Enhydra.getLogChannel().write(Logger.ERROR,doe.getMessage());
      throw new RefAssertionException(doe.getMessage(),doe);
    } catch (QueryException qe) {
      Enhydra.getLogChannel().write(Logger.ERROR,qe.getMessage());
      throw new RefAssertionException(qe.getMessage(),qe);
    } catch (NonUniqueQueryException nuqe) {
      Enhydra.getLogChannel().write(Logger.ERROR,nuqe.getMessage());
      throw new RefAssertionException(nuqe.getMessage(),nuqe);
    }
  }
}