cc1561d92c
Introduced IsNewStrategy and IsNewStrategyFactory interfaces to allow abstracting the way the is-new state of an entity can be determined. The factory allows creating a strategy instance by inspected type, whereas the actual strategy then implements the is-new decision based on a given entity. We provide a MappingContext based factory implementation that looks up a PersistentEntity for the type requested and inspects it for an @Version or @Id property. It will then return strategy implementations that inspect the detected properties and check their values against null or 0 respectively. We also add a CachingIsNewStrategyFactory wrapper to prevent the lookup of the actual strategy from being done over and over again. The @Version annotation was pulled up from the Spring Data MongoDB module. It can be used as meta annotation to allow a deprecation step on the MongoDB's @Version one. Added an IsNewAwareAuditingHandler that exposes a unifying markAudited(…) delegating to the markCreated(…) and markModified(…) depending on the outcome of the IsNewStrategy.