🚀 go-pugleaf

In article <1992Dec7.222214.14970@cubetech.com> andrew@cubetech.com  
(Andrew Loewenstern) writes:
> On the other hand, I can't seem to get nested objects to work well...
> I have an object, which conforms to the IXRecordTranscription protocol
> that has a List as an ivar.  All of the objects in the list conform to
> IXRecordTranscription as well.  When I add the first object as a
> record to an IXRecordManager, it get's archived, but the List within
> does _not_....  Any ideas??

The fast transcription performed on objects conforming to the protocol  
does not follow id's, structures or pointers to void.  To transcribe a  
graph of objects, you must either: (a) use archiving (i.e., don't  
implement the protocol), and pay the performance hit, or (b) follow the  
graph in the sender:willWriteRecord: and sender:didReadRecord: methods.

Since the record manager is passed to these methods as the first argument,  
you can recursively write out the graph with [sender addRecord:anObject]  
or [sender replaceRecord:rn with:anObject].  In the latter case, you need  
to know anObject's record number.  Try creating a simple super class that  
knows it's record number and make your record classes inherit from it.

J.