Kirill Petrov Escribio :-)
> Hello everybody,
>
> I have an object model in which there are two objects: Model and
> Reactant. This is basically n to m relationship. Model can have a number
> of Reactants. Reactants can be in a number of Models.
> In Java this is emplemented by a Collection property in Model class.
>
> I want to construct a query that allows me to find all the models that
> have a particular reactant in them. How can I do it?
>
> None of the examples given on the site deals with queries like this. Can
> I do it with QueryByCriteria or do I need to use OQL for that?
> If I need to use OQL where can I read about it? The OQL section on the
> site is empty. How well does OJB support OQL?
>
> thanks a bunch,
>
> Kirill
Hi, Kirill.
in PB:
Criteria crit = new Criteria();
crit.addEqualTo("collectionNameOfRetractan.fieldNameInRetractanClass",
valueObject);
QueryByCriteria qry = new QueryByCriteria(models.class, crit);
...
...
Cheers,
Carlos Ch�vez.
>
>
>
>
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--
Carlos Ch�vez
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