mtime ( object )

Return the modification time of the object.

The modification time may not be known, in which case None is returned.

register ( object )

Register a IPersistent with the current transaction.

This method provides some insulation of the persistent object from details of transaction management. For example, it allows the use of per-database-connection rather than per-thread transaction managers.

A persistent object should not register with its data manager more than once during a single transaction. XXX should is too wishy-washy; we should probably guarantee that this is true, and it might be.

setstate ( object )

Load the state for the given object.

The object should be in the deactivated (ghost) state. The object's state will be set and the object will end up in the up-to-date state.

The object must implement the IPersistent interface.