java.rmi.activation
Interface ActivationMonitor

All Superinterfaces:
Remote sample code for java.rmi.Remote definition code for java.rmi.Remote

public interface ActivationMonitor
extends Remote sample code for java.rmi.Remote definition code for java.rmi.Remote

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.

Since:
1.2
See Also:
Activator sample code for java.rmi.activation.Activator definition code for java.rmi.activation.Activator , ActivationSystem sample code for java.rmi.activation.ActivationSystem definition code for java.rmi.activation.ActivationSystem , ActivationGroup sample code for java.rmi.activation.ActivationGroup definition code for java.rmi.activation.ActivationGroup

Method Summary
 void activeObject sample code for java.rmi.activation.ActivationMonitor.activeObject(java.rmi.activation.ActivationID, java.rmi.MarshalledObject) definition code for java.rmi.activation.ActivationMonitor.activeObject(java.rmi.activation.ActivationID, java.rmi.MarshalledObject) (ActivationID sample code for java.rmi.activation.ActivationID definition code for java.rmi.activation.ActivationID  id, MarshalledObject sample code for java.rmi.MarshalledObject definition code for java.rmi.MarshalledObject  obj)
          Informs that an object is now active.
 void inactiveGroup sample code for java.rmi.activation.ActivationMonitor.inactiveGroup(java.rmi.activation.ActivationGroupID, long) definition code for java.rmi.activation.ActivationMonitor.inactiveGroup(java.rmi.activation.ActivationGroupID, long) (ActivationGroupID sample code for java.rmi.activation.ActivationGroupID definition code for java.rmi.activation.ActivationGroupID  id, long incarnation)
          Informs that the group is now inactive.
 void inactiveObject sample code for java.rmi.activation.ActivationMonitor.inactiveObject(java.rmi.activation.ActivationID) definition code for java.rmi.activation.ActivationMonitor.inactiveObject(java.rmi.activation.ActivationID) (ActivationID sample code for java.rmi.activation.ActivationID definition code for java.rmi.activation.ActivationID  id)
          An activation group calls its monitor's inactiveObject method when an object in its group becomes inactive (deactivates).
 

Method Detail

inactiveObject sample code for java.rmi.activation.ActivationMonitor.inactiveObject(java.rmi.activation.ActivationID) definition code for java.rmi.activation.ActivationMonitor.inactiveObject(java.rmi.activation.ActivationID)

void inactiveObject(ActivationID sample code for java.rmi.activation.ActivationID definition code for java.rmi.activation.ActivationID  id)
                    throws UnknownObjectException sample code for java.rmi.activation.UnknownObjectException definition code for java.rmi.activation.UnknownObjectException ,
                           RemoteException sample code for java.rmi.RemoteException definition code for java.rmi.RemoteException 
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 sample code for java.rmi.activation.UnknownObjectException definition code for java.rmi.activation.UnknownObjectException - if object is unknown
RemoteException sample code for java.rmi.RemoteException definition code for java.rmi.RemoteException - if remote call fails
Since:
1.2

activeObject sample code for java.rmi.activation.ActivationMonitor.activeObject(java.rmi.activation.ActivationID, java.rmi.MarshalledObject) definition code for java.rmi.activation.ActivationMonitor.activeObject(java.rmi.activation.ActivationID, java.rmi.MarshalledObject)

void activeObject(ActivationID sample code for java.rmi.activation.ActivationID definition code for java.rmi.activation.ActivationID  id,
                  MarshalledObject sample code for java.rmi.MarshalledObject definition code for java.rmi.MarshalledObject  obj)
                  throws UnknownObjectException sample code for java.rmi.activation.UnknownObjectException definition code for java.rmi.activation.UnknownObjectException ,
                         RemoteException sample code for java.rmi.RemoteException definition code for java.rmi.RemoteException 
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 sample code for java.rmi.activation.UnknownObjectException definition code for java.rmi.activation.UnknownObjectException - if object is unknown
RemoteException sample code for java.rmi.RemoteException definition code for java.rmi.RemoteException - if remote call fails
Since:
1.2

inactiveGroup sample code for java.rmi.activation.ActivationMonitor.inactiveGroup(java.rmi.activation.ActivationGroupID, long) definition code for java.rmi.activation.ActivationMonitor.inactiveGroup(java.rmi.activation.ActivationGroupID, long)

void inactiveGroup(ActivationGroupID sample code for java.rmi.activation.ActivationGroupID definition code for java.rmi.activation.ActivationGroupID  id,
                   long incarnation)
                   throws UnknownGroupException sample code for java.rmi.activation.UnknownGroupException definition code for java.rmi.activation.UnknownGroupException ,
                          RemoteException sample code for java.rmi.RemoteException definition code for java.rmi.RemoteException 
Informs that the group is now inactive. The group will be recreated upon a subsequent request to activate an object within the group. A group becomes inactive when all objects in the group report that they are inactive.

Parameters:
id - the group's id
incarnation - the group's incarnation number
Throws:
UnknownGroupException sample code for java.rmi.activation.UnknownGroupException definition code for java.rmi.activation.UnknownGroupException - if group is unknown
RemoteException sample code for java.rmi.RemoteException definition code for java.rmi.RemoteException - if remote call fails
Since:
1.2