Hm, not the complete thing but here's the method that does the writing:

protected void writeProperty(PreparedStatement ps, int id, Object bean,
PropertyDescriptor pd) throws
   IllegalAccessException,
   InvocationTargetException,
   SQLException,
   InstantiationException {
   final String propertyName = pd.getName();
   Method reader = pd.getReadMethod();

   Object value = reader.invoke(bean, BeanPersister.EMPTY_ARRAY);

   Class propertyType = pd.getPropertyType();

   final boolean orderingProperties = isOrderingProperties();

   if (Collection.class.isAssignableFrom(propertyType)) {
       /*
        *  assume association to other bean OR id collection
        */
       final boolean isIdCollection = isIdCollectionProperty(pd);

       Iterator valueIter = ((Collection)value).iterator();
       int count = 0;

       while (valueIter.hasNext()) {
           Object element = valueIter.next();

           if (element != null) {
               Object elementToSet = isIdCollection
                   // write the id directly if it is an id collection
                   ? element
                   // otherwise use the element's id
                   : reverseLookup(element);

               ps.setInt(1, id);
               ps.setString(2, propertyName);

               ps.setString(3, (elementToSet == null
                                ? element
                                : elementToSet).toString());

               if (orderingProperties) {
                   ps.setInt(4, count);
                   ++count;
               }

               ps.executeUpdate();
           }
       }
   }
   else {
       // standard types
       ps.setInt(1, id);
       ps.setString(2, propertyName);

       if (value == null) {
           ps.setNull(3, Types.VARCHAR);
       }
       else {
           // convert non null values
           PropertyEditor pe = getPropertyEditor(pd);

           ps.setString(3,
                        pe == null
                        // default conversion
                        ? value.toString()
                        // use editor
                        : convertPropertyValueToString(value, pe));
       }

       if (orderingProperties) {
           ps.setInt(4, 0);
       }

       ps.executeUpdate();
   }
}

I can assure you that I don't write such code.

Thanks for replying anyway.  Apparently nobody can image how this can come
about. *sigh*  We have to believe customers that they didn't fiddle with
the database, yet this is the only explanation I have at the moment.

Regards

   robert