Dieter Maurer wrote:

Andreas Jung wrote at 2005-5-19 13:43 +0200:

...

after resolving all outstanding problems with Zope 2.8 under Windows the next releases will be Zope 2.8 b2 (this weekend) and Zope 2.8.0 final (scheduled for 2005/06/11).

What about the ZClasses?

They work fine AFAIK. Jim -- Jim Fulton mailto:jim@zope.com Python Powered! CTO (540) 361-1714 http://www.python.org Zope Corporation http://www.zope.com http://www.zope.org

Andreas Jung wrote:

<dieter@handshake.de> wrote:

...

What about the ZClasses? Jim fixed them (hopefully :-))

They don't work for me in 2.8... :-( I can't shake a new permission problem when trying to add a ZClass instance in 2.8b2. This is a 2.8 specific problem as the same process works in 2.7.6. For reference, the recently enabled tests for ZClasses all pass fine. This is a problem wether python or C security control is enabled via zope.conf. Also this was always tried with a 'fresh' ZODB. From a bit of digging through the code it seems there is a difference comes about in the call on line 166 of AccessControl.User inside _check_context : return object.aq_inContextOf(context, 1) In Zope 2.8 it returns 0, in 2.76 it returns 1 with the steps below. I don't know how to even start to try to debug inside this C based method? Below are the steps I used to reproduce this problem. This was on a Fedora Core 3 x86_64 server with a fresh Zope & Python compile : - Open the ZMI and login as a user with 'Manager' permissions. - Goto : /Control_Panel/Products/ - Add a new Product 'AAA' - Go to the Product : /Control_Panel/Products/AAA/ - Add a new 'Z Class' : id=ZZZ title=ZZZ meta type=ZZZ 'Create Constructor objects' checked 'Included standard Zope persistent object base classes' checked. - Goto the Root Folder - Goto the Security Tab - Give 'Manager' permission to 'Add ZZZs' - Goto the Root Folder - Try to add an instance of a 'ZZZ': - Zope 2.7.6 succeeds no problem. - Zope 2.8.0-b2 (and b1) you get a http auth login form come up. - You get the same behaviours with Python 2.3.5 and 2.4.1. I also tried a quick hack to make the above method always return 1 in Zope 2.8, but another error is then encountered whilst trying to add the ZClass instance : * Module ZPublisher.Publish, line 187, in publish_module_standard * Module ZPublisher.Publish, line 144, in publish * Module ZPublisher.Publish, line 107, in publish * Module Zope2.App.startup, line 248, in recordMetaData * Module OFS.Traversable, line 104, in getPhysicalPath * Module App.FactoryDispatcher, line 90, in __getattr__ AttributeError: getPhysicalPath I didn't see anything different you 'need' to do with 2.8 WRT ZClasses for this to work, but I suppose I could have missed something! One other note is that I have also only been able to try this on 64 bit platforms (Solaris 10 and FC3 as above). Thanks for any help. I hope this can be resolved before 2.8 goes final! JB.

John Barratt wrote at 2005-6-7 10:08 +1000:

... From a bit of digging through the code it seems there is a difference comes about in the call on line 166 of AccessControl.User inside _check_context :

return object.aq_inContextOf(context, 1)

In Zope 2.8 it returns 0, in 2.76 it returns 1

Looks like an acquisition bug: obj.aq_inContextOf(context, 1) is recursively defined by: True, if "obj.aq_base == context.aq_base" or "container(obj) is not None" and "container(obj).aq_inContextOf(context, 1)" where "container(obj)" is "aq_parent(aq_inner(obj))" which is the container containing "obj". which is equivalent to (resolving the recursing): obj.aq_inContextOf(context, 1) iff for some (hierarchie) ancestor "a" of obj, "a.aq_base == context.aq_base". Given this definition, you can check which implementation is wrong and file a bug report. -- Dieter

John Barratt wrote at 2005-6-9 16:54 +1000:

... I would hence suspect the wrapping, and/or behaviour of the object and/or context to be somehow different?

A long time ago, Shane posted a very useful function to analyse acquisition wrappers: "showaq". Maybe, the mailing list archive is still able to locate his post... -- Dieter

Jo Meder wrote:

...

A long time ago, Shane posted a very useful function to analyse acquisition wrappers: "showaq".

Maybe, the mailing list archive is still able to locate his post...

Just ask Google: http://www.zope.org/Members/chrisw/showaq

Thanks Jo. It seems though that there was a branch containing further ZClass fixes that was merged into Zope 2.8 final that wasn't in b2 that fixed this problem. JB.