Methods and apparatus, including computer program products, for providing notifications of events include defining a set of standard events for objects in a back end system and operating on an object in the back end system using an instance of a service provider class. Conditions corresponding to a standard event from the set of standard events are detected. The conditions corresponding to the standard event are defined by meta data stored in a repository. One or more subscribers to the standard event are notified in response to a detected condition.
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