org.hibernate.classic
Interface Lifecycle
public interface Lifecycle
Provides callbacks from the Session to the persistent object.
Persistent classes may implement this interface but they are not
required to.
onSave: called just before the object is saved
onUpdate: called just before an object is updated,
ie. when Session.update() is called
onDelete: called just before an object is deleted
onLoad: called just after an object is loaded
onLoad() may be used to initialize transient properties of the
object from its persistent state. It may not be used to load
dependent objects since the Session interface may not be
invoked from inside this method.
A further intended usage of onLoad(), onSave() and
onUpdate() is to store a reference to the Session
for later use.
If onSave(), onUpdate() or onDelete() return
VETO, the operation is silently vetoed. If a
CallbackException is thrown, the operation is vetoed and the
exception is passed back to the application.
Note that onSave() is called after an identifier is assigned
to the object, except when identity column key generation is used.
static boolean | NO_VETO - Return value to accept the action (false)
|
static boolean | VETO - Return value to veto the action (true)
|
NO_VETO
public static final boolean NO_VETO
Return value to accept the action (false)
VETO
public static final boolean VETO
Return value to veto the action (true)
onLoad
public void onLoad(Session s,
Serializable id)
Called after an entity is loaded. It is illegal to
access the Session from inside this method.
However, the object may keep a reference to the session
for later use.
s
- the sessionid
- the identifier
onUpdate
public boolean onUpdate(Session s)
throws CallbackException
Called when an entity is passed to Session.update().
This method is not called every time the object's
state is persisted during a flush.