Ordered 1-to-M failure

Question

Hello,
We are using 9.0.4.5. So far, we have managed to do most everything in the Mapping Workbench. So loading a comnplex class looks fairly simple:
ReadObjectQuery query = new ReadObjectQuery(OurClass.class);
ExpressionBuilder eBuilder = query.getExpressionBuilder();
Expression exp1 = eBuilder.get("m_dbKey").equal(
ourKey.getValue());
query.setSelectionCriteria(exp1);
ourInstance = (OurClass) getServer().executeQuery(query);
We would like the 1-M lists to be ordered by their natural key.
Unfortunately, the Mapping Workbench does not appear to directly support this.
It inserts the xml:
<ascending-order-by-query-key>ao_name</ascending-order-by-query-key>
but, I assume that since ao_name is not a database key, we do not get an ordered result.
In Oracle Forms, I would simple fill in an order by clause in the forms editor.
It seems to be less straightforward in Toplink Mapping Workbench.
Where should I look to figure out how to do this?
Thanks

Answer 1

Can you elaborate a bit, I'm confused if you want to order a ReadAllQuery, or the target collection of a 1-M mapping? If it's a ReadAllQuery, you can use the "addAscendingOrdering(Expression e)" api. If it's a 1-M mapping, there is a setting for ordering.
You mention you want to sort on a "natural key", and I'm not sure what you mean (sorry, I'm not a DB expert). If the issue is this is an unmapped field, then you can still sort on it. If using expressions, you'd use the "getField()" api (see Javadoc for example), and in the mapping workbench you would create a query key on the field (see docs for "Query key".
- Don