I ended up having to do something like this:
public abstract class HibernateConfirmationRepository<T extends
Confirmation>
extends HibernateGenericRepository<T, Long> implements
ConfirmationRepository<T> {
public HibernateConfirmationRepository(Class<T> clazz) {
super(clazz);
}
@SuppressWarnings("unchecked")
public T findCurrentConfirmation(TaxEntity taxEntity) {
Object[] params = { taxEntity, ActiveStatus.ACTIVE };
List<T> confirmation = this.hibernateTemplate
.find(
"from "
+
this.getconfirmationObjectName()
+ " where "
+ "taxEntity=?
and activeStatus=? order by
confirmationStamp.confirmDate desc",
params);
if (confirmation == null || confirmation.isEmpty()) {
return null;
}
return confirmation.get(0);
}
/**
* To be implemented by domain-specific ConfirmationDetailRepositories
in
* order to retrieve the appropriate subclass.
*
* @return Confirmation object name. Ex:
* "ServiceProviderElectionConfirmation"
*/
protected abstract String getconfirmationObjectName();
}
Where subclasses would define the "ConfirmationObjectName" to be used in the
HSQL.
Martin Homik wrote:
>
> Another related question is how to state Hibernate queries depending on
> Generics. For instance, you would like to state a generic query in
> ConfirmDetailsDaoHibernate:
>
> public List<T> findAllOrderByAlpha() {
> return getHibernateTemplate().find(
> "from ConfirmDetails c order by c.name");
> }
>
> Well, this HQL is wrong, because it will return all ConfirmDetails and not
> only those of some sub type of ConfirmDetails. That is, this query commits
> to ConfirmDetails and is not generic. So, how to write generic queries in
> a formlike:
>
> "from T c order by c.name", T);
>
> with T the type of the class. T could be ConfirmDetails or
> ServiceProviderConfirmDetails.
>
> Any idea?
>
>
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