ActivationMonitor JDK 1.6)

Description

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 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.

See also: Activator ActivationSystem ActivationGroup

Methods

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public void activeObject (ActivationID id, MarshalledObject<Remote> obj) throws UnknownObjectException RemoteException

Informs that an object is now active.

Informs that an object is now active. An 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).
Parameters:
- id - the active object's id
- obj - the marshalled form of the object's stub
Throws:
- UnknownObjectException - if object is unknown
- RemoteException - if remote call fails
Since: 1.2

public void inactiveGroup (ActivationGroupID id, long incarnation) throws UnknownGroupException RemoteException

Informs that the group is now inactive.

public void inactiveObject (ActivationID id) throws UnknownObjectException RemoteException

An activation group calls its monitor's inactiveObject method when an object in its group becomes inactive (deactivates).

An activation group calls its monitor's 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 An activation group discovers that an object (that it participated in activating) in its VM is no longer active, via calls to the activation group's inactiveObject method.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the ActivationMonitor that the remote object reference it holds for the object with the activation identifier, id, is no longer valid.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.

Parameters:
- id - the object's activation identifier
Throws:
- UnknownObjectException - if object is unknown
- RemoteException - if remote call fails
Since: 1.2