Using Java generics for JPA findAll() query with WHERE clause

Question

So, After a 10+ year break I\'m coming back to Java and trying out stuff with JPA and Java generics. I\'ve created a generics based findAll(other) JPA query tha

Answer 1

Hat tip to Adam Bien if you don't want to use createQuery with a String and want type safety:

 @PersistenceContext
 EntityManager em;

 public List allEntries() {
        CriteriaBuilder cb = em.getCriteriaBuilder();
        CriteriaQuery cq = cb.createQuery(ConfigurationEntry.class);
        Root rootEntry = cq.from(ConfigurationEntry.class);
        CriteriaQuery all = cq.select(rootEntry);
        TypedQuery allQuery = em.createQuery(all);
        return allQuery.getResultList();
 }

http://www.adam-bien.com/roller/abien/entry/selecting_all_jpa_entities_as