An event is an object containing information related to an event in 
. As an example, there are Workflow State Events that are emitted when the state of a workflow is changed and there are User Events that are emitted when a user logs in or modifies data in the system.
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User defined events are introduced by extending the DRBaseEvent class. DRBaseEvent itself extends DRAbstractUDR so that it can benefit from the introspection mechanism introduced in the UDR the UDR subsystem. The Event Notification configuration utilizes this when allowing automatic filtering on or selecting data from individual event fields. The base event contains some common fields that will be available in all events. These include severity, IP address and timestamp.
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and must be overloaded. For further information, see Historic Events above.