Partial Implementation of Container

As shown in Figure 3, class PContainer realizes interface ISync. Member functions on the ARC object for the use of the originator application are implemented in this class. They include member functions push() from interface IPushCommand and member functions sync(), GracefulRetract() and connect() from interface ISync. Interface ISync and IPushCommand are visible to the originator application through interface IContainer, as it can be traced through the class diagram in Figure 3.

Method push() is used for migration of an ARC object. Method sync() blocks the caller till the object returns to the originating application. Method GracefulRetract sets a flag on a migrated ARC object which may be checked by ARC object's executing code (such as Trigger). ARC object may return from trigger on observing this flag to be true. Originator application uses method connect() to establish connection to migrated ARC object if the latter is registered for remoting after migration. After a successful connect, application code may continue to invoke public member functions on the migrated ARC object through its container.