Method and apparatus of performing active update notification

Details Method and apparatus of performing active update notification Method and apparatus of performing active update notification

2005-05-17

2005-05-17

Jung, David (Department: 2134)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000, C707S793000

Reexamination Certificate

active

06895401

ABSTRACT:
A method and apparatus of performing active update notification. Components of an application are able to specify interest in a data object or set of data objects by registering an interest object with an update management component of the application. The interest object specifies the interested application component, as well as the identity of one or more data objects or an attribute value or range of values to associate with data objects. When modifications are made to data objects corresponding to the registered interest objects, the interested application component or components receive an update notification from the update management component. In one embodiment, active update notification is performed within a multi-tier application. An update management component exists at the application server on the application tier, as well as at each client in the client tier. In the application tier, the update management component maintains, with respect to clients and servers, a registry of interest objects of sufficient depth to determine which clients or other servers may be interested in changes to data objects. Update notifications are then sent only to the interested clients or servers. The interest registry of the update management component in the interested client is used to resolve the interested application component, and to forward the update notification appropriately.

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