Reverted implementation of delete(Iterable<T> entities) to iterate over the entities as creating a query can cause the persistence provider to choke on really large entity sets. Beyond that triggering a query would require us to clear the persistence context which might not be wanted in every case. Thus an additional method deleteInBatch(Iterable<T> entities) especially available on the JpaRepository interface now triggers the query but clearly states the assumptions and side effects in the JavaDoc. Removed some obsolete finals and an obsolete method.
Auditing namespace element now has a set-dates attribute that defaults to true, but also allows disabling that in case one wants to use database set values.
I chose not to return the arbitrary first result in case the Specification returns more than one result. First, there's no way to influence the order of the results so that we potentially get different results for the very same call. Beyond that this aligns with the semantics we have for finder methods that are supposed to return a single entity but actually don't.
Set bean scope of AuditingEntityListener to prototype to ensure DI for each instance. Before that AuditorAware implementations referencing a Repository would cause premature initialization of those as the AuditingEntityListener gets created and thus wired when the EntityManagerFactory gets created. At that point in time we unfortunately don't have no DAOs yet.
Added @DirtiesContext to AuditingEntitListenerIntegrationTest because otherwise the @Configurable backing prototype bean definition leaks into other test cases.
Altered JpaQueryCreator to correctly add property traversals and joins based on Property. Added integration tests to verify property traversal on collections and simple properties.
Query creation is not String based anymore but rather leverages the PartTree infrastructure and builds a JPA criteria API query instead. Changed query lookup and execution accordingly.
Port of the Hades project whereas the JPA independent part resides in Spring Data Commons Core. Reflect changes refactorings for DATACMNS-2, DATACMNS-3, DATACMNS-4, DATACMNS-5, DATACMNS-6, DATACMNS-8, DATACMNS-9, DATAJPA-2.
