BNZObservation


Abstract: Class for managing listener registrations. Combines a change type with a target object and associates some callback methods with them.

This class is used for storing all the registrations in the BNZTransactionalNotificationCenter. It combines a record about a change type on a certain target object.

Instances of this class are used in BNZTransactionObserverRecord to indicate that a listener is interested in changes of the given type on the given target. Additionally, the callback selectors for "changeWillBeMade", "changeHasBeenMade" and "changeHasBeenRolledBack" are stored





(Last Updated 8/31/2006)
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