[ZODB-Dev] transaction observer iface

[Kapil Thangavelu]

i'm interested in implementing an observer interface for transactions,
something along the apis of the following. i was curious if there was
interest/support for this sort of development.

-kapil

class ITransactionObserver:

    def notifyAbort( txn ):
        """
        invoked when the transaction is about to abort
        """

    def notifyCommit( txn ):
        """
        invoked when the transaction is about to commit
        """

    def notifyBegin( txn ):
        """
        invoked when the transaction begins...
        """

    def notifyObjectRegistered( txn, object):
        """
        invoked when an object registers for the transaction
        """

    def register( txn):
        """
        used to register an observer for the transaction
        """

    def unregister( txn ):
        """
        used to remove an observer from a transaction
        """