Returns true if any of the receiver's channels are open, false otherwise. Returns true if debugging is enabled in the receiver, false otherwise. Invokes the delegate method adaptorContextShouldRollback before rolling back the transaction. If the transaction is begun successfully, the method sends this a transactionDidRollback message and invokes the delegate method adaptorContextDidRollback . Throws an exception if the attempt is unsuccessful.
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The delegate refuses. The database server fails to rollback. An adaptor context subclass should override this method without invoking EOAdaptorContext's implementation. Enables debugging in the receiver and all its channels. Informs the adaptor context that a transaction has begun in the database server, so the receiver can update its state to reflect this fact and send an AdaptorContextBeginTransactionNotification .