Package java.rmi.activation

Interface Summary

ActivationInstantiator An ActivationInstantiator is responsible for creating instances of "activatable" objects.
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).
ActivationSystem The ActivationSystem provides a means for registering groups and "activatable" objects to be activated within those groups.
Activator The Activator facilitates remote object activation.

Class Summary

Activatable The Activatable class provides support for remote objects that require persistent access over time and that can be activated by the system.
ActivationDesc An activation descriptor contains the information necessary to activate an object:
  • the object's group identifier,
  • the object's fully-qualified class name,
  • the object's code location (the location of the class), a codebase URL path,
  • the object's restart "mode", and,
  • a "marshalled" object that can contain object specific initialization data.
ActivationGroup An ActivationGroup is responsible for creating new instances of "activatable" objects in its group, informing its ActivationMonitor when either: its object's become active or inactive, or the group as a whole becomes inactive.
ActivationGroupDesc An activation group descriptor contains the information necessary to create/recreate an activation group in which to activate objects.
ActivationGroupDesc.CommandEnvironment Startup options for ActivationGroup implementations.
ActivationGroupID The identifier for a registered activation group serves several purposes:
  • identifies the group uniquely within the activation system, and
  • contains a reference to the group's activation system so that the group can contact its activation system when necessary.

The ActivationGroupID is returned from the call to ActivationSystem.registerGroup and is used to identify the group within the activation system.

ActivationID Activation makes use of special identifiers to denote remote objects that can be activated over time.

Exception Summary

ActivateFailedException This exception is thrown by the RMI runtime when activation fails during a remote call to an activatable object.
ActivationException General exception used by the activation interfaces.
UnknownGroupException An UnknownGroupException is thrown by methods of classes and interfaces in the java.rmi.activation package when the ActivationGroupID parameter to the method is determined to be invalid, i.e., not known by the ActivationSystem.
UnknownObjectException An UnknownObjectException is thrown by methods of classes and interfaces in the java.rmi.activation package when the ActivationID parameter to the method is determined to be invalid.