What are the three states of a Hibernate object?
There are three states of Hibernate objects: Transient, Persistent, and Detached.
- Transient state: An object is in a transient state when it is created as a new instance and its properties are set. At this point, the object is not associated with any records in the database and is not managed or tracked by Hibernate.
- Persistent state: When an object in transient state is associated with a SessionFactory, it enters the persistent state. Objects in persistent state correspond to records in the database and are managed and tracked by Hibernate. Any changes made to the object in persistent state will automatically be synchronized with the database after a flush operation on the Session.
- Detached: When a persistent object becomes disconnected from the Session, it enters a detached state. A detached object is no longer managed or tracked by Hibernate, and any changes made to the object will not automatically sync to the database. However, a detached object can be reattached to a Session, transitioning back to a persistent state and once again being managed and tracked by Hibernate.