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Tue, 20 August 2013 19:27

Eclipse User

I'm loving CriteriaBuilders and the Entity metadata for strongly typed queries...

Anyway, is there any way to use the same strong typing for specifying query hints?

For example, I want to add a batch read hint using a Typed field, so instead of:

               final TypedQuery<TechnicalPublicationType> readAllQuery = ydsusEntityManager.createQuery("select o from TechnicalPublicationType o", TechnicalPublicationType.class);
                readAllQuery.setHint("eclipselink.batch", "o.categories");

I want to do something like:

                final CriteriaBuilder builder = ydsusEntityManager.getCriteriaBuilder();
                final CriteriaQuery<TechnicalPublicationType> query = builder.createQuery(TechnicalPublicationType.class);
                final Root<TechnicalPublicationType> from = query.from(TechnicalPublicationType.class);
                final TypedQuery<TechnicalPublicationType> readAllQuery = ydsusEntityManager.createQuery(query);
                readAllQuery.setHint("eclipselink.batch", from.get(TechnicalPublicationType_.categories));