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Java™ Platform Standard Ed. 6 |
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public interface ActivationMonitor
An ActivationMonitor
is specific to an
ActivationGroup
and is obtained when a group is
reported active via a call to
ActivationSystem.activeGroup
(this is done
internally). An activation group is responsible for informing its
ActivationMonitor
when either: its objects become active or
inactive, or the group as a whole becomes inactive.
Activator
,
ActivationSystem
,
ActivationGroup
Method Summary | |
---|---|
void |
activeObject(ActivationID id,
MarshalledObject<? extends Remote> obj)
Informs that an object is now active. |
void |
inactiveGroup(ActivationGroupID id,
long incarnation)
Informs that the group is now inactive. |
void |
inactiveObject(ActivationID id)
An activation group calls its monitor's inactiveObject method when an object in its group
becomes inactive (deactivates). |
Method Detail |
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void inactiveObject(ActivationID id) throws UnknownObjectException, RemoteException
inactiveObject
method when an object in its group
becomes inactive (deactivates). An activation group discovers
that an object (that it participated in activating) in its VM
is no longer active, via calls to the activation group's
inactiveObject
method.
The inactiveObject
call informs the
ActivationMonitor
that the remote object reference
it holds for the object with the activation identifier,
id
, is no longer valid. The monitor considers the
reference associated with id
as a stale reference.
Since the reference is considered stale, a subsequent
activate
call for the same activation identifier
results in re-activating the remote object.
id
- the object's activation identifier
UnknownObjectException
- if object is unknown
RemoteException
- if remote call failsvoid activeObject(ActivationID id, MarshalledObject<? extends Remote> obj) throws UnknownObjectException, RemoteException
ActivationGroup
informs its monitor if an object in its group becomes active by
other means than being activated directly (i.e., the object
is registered and "activated" itself).
id
- the active object's idobj
- the marshalled form of the object's stub
UnknownObjectException
- if object is unknown
RemoteException
- if remote call failsvoid inactiveGroup(ActivationGroupID id, long incarnation) throws UnknownGroupException, RemoteException
id
- the group's idincarnation
- the group's incarnation number
UnknownGroupException
- if group is unknown
RemoteException
- if remote call fails
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Java™ Platform Standard Ed. 6 |
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