Re: Keyed archiving and class clusters

[Richard Frith-Macdonald]

On 28 Jun 2010, at 15:41, Thomas Davie wrote:

> 
> On 28 Jun 2010, at 15:37, Richard Frith-Macdonald wrote:
> 
>> 
>> On 28 Jun 2010, at 15:15, Thomas Davie wrote:
>> 
>>> Hi all,
>>> 
>>> From what I understand, GNUstep's keyed archive format is meant to be 
>>> compatible with Apple's.  However, I'm hitting an issue and I'm not certain 
>>> if it's the fault of the archiver, or class clusters.
>>> 
>>> Basically, when an NSMutableSet gets encoded, what really gets encoded is 
>>> it's concrete subclass, GSMutableSet... When I try to decode this in some 
>>> code using apple's implementation, it chokes, not having a GSMutableSet 
>>> class to attempt to init.
>>> 
>>> Is there any sane way round this, or should I get on with writing my own 
>>> serialisation methods if I want to send objects back and forth between 
>>> apple/GNUstep implementations?
>> 
>> It's a bug ... I fixed it in svn trunk.
>> 
>> If you don't want to use trunk,  I expect as a workaround you could add a 
>> category to NSMutableSet to override -classForCoder to return [NSMutableSet 
>> class]
> 
> Thanks a lot, I'll update and use that, is this confirmation then that 
> GNUstep's keyed archive format should in fact be compatible with apple's, or 
> is that still a bit of an assumption?

The aim is to be compatible ...