November 2000 - Zope-Dev

Question: How can instatiate a Zclass from python.
by Harry 02 Nov '00

02 Nov '00

I am creating an external method in python and I want to add a product (in that method) which is a Zclass (only, it doesn't exists in the lib/python/Products directory). How can I instatiate this object and how can I overide the name error that will occur (because I haven't import anything)? Thank you very much, /* Χάρης */

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RE: [Zope-dev] python memory error on Windows NT
by Toby Dickenson 01 Nov '00

01 Nov '00

> > That sounds like a bug in an extension module > The installed packages on the site are (all the Zope 2.2.2 > released with > and): > ZODBCDA (Installed product ZODBCDA) > we use 2 ODBC connection on 2 MSAccess MDB and no python > extension. > I do not know where and when the problem happens. But it happens. I suspect Access

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Management Interface Revision Proposal
by Adam Davis 01 Nov '00

01 Nov '00

I have composed a proposal to make some small (but hopefully useful) revisions to the Zope management interface for the 2.3 release. Please see: http://dev.zope.org/Wikis/DevSite/Proposals/ManagementInterfaceQuickFix Comments are welcome until Friday, November 10th. Please enter any comments at http://dev.zope.org/Wikis/DevSite/Proposals/ManagementInterfaceQFDiscussion. -Adam

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Segmentation fault when adding new objects
by morten＠esol.no 01 Nov '00

01 Nov '00

I'm having trouble with the adding of new objects; specifically it's adding of rfc822_address objects (contained within the ZopeGUM distribution, http://www.zope.org/Members/morphex/ZopeGUM) I haven't really got a clue what's wrong, have any of you? -- Start debugging session > /usr/local/Zope/lib/python/SearchIndex/UnTextIndex.py(244)index_object() -> old = d.has_key pdb> > /usr/local/Zope/lib/python/SearchIndex/UnTextIndex.py(245)index_object() -> last = None pdb> > /usr/local/Zope/lib/python/SearchIndex/UnTextIndex.py(253)index_object() -> src = self.getLexicon(self._lexicon).Splitter(k) pdb> > /usr/local/Zope/lib/python/SearchIndex/UnTextIndex.py(186)getLexicon() -> def getLexicon(self, vocab_id): pdb> > /usr/local/Zope/lib/python/SearchIndex/UnTextIndex.py(192)getLexicon() -> """ pdb> > /usr/local/Zope/lib/python/SearchIndex/UnTextIndex.py(193)getLexicon() -> if type(vocab_id) is not type(""): pdb> > /usr/local/Zope/lib/python/SearchIndex/UnTextIndex.py(196)getLexicon() -> vocab = getattr(self, vocab_id) pdb> > /usr/local/Zope/lib/python/SearchIndex/UnTextIndex.py(197)getLexicon() -> return vocab.lexicon pdb> --Return-- > /usr/local/Zope/lib/python/SearchIndex/UnTextIndex.py(197)getLexicon()-><Globbin... 89f3e28> -> return vocab.lexicon pdb> > /usr/local/Zope/lib/python/SearchIndex/GlobbingLexicon.py(242)Splitter() -> def Splitter(self, astring, words=None): pdb> > /usr/local/Zope/lib/python/SearchIndex/GlobbingLexicon.py(243)Splitter() -> """ wrap the splitter """ pdb> > /usr/local/Zope/lib/python/SearchIndex/GlobbingLexicon.py(248)Splitter() -> return Splitter(astring) pdb> --Return-- Segmentation fault morten@slakka:/usr/local/Zope/lib/python > -- End debugging session -Morten

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Questions about implementing object models with ZPatterns
by Itai Tavor 01 Nov '00

01 Nov '00

Hi, How do I implement gen-spec classes using ZPatterns and ZClasses? For example, I want to implement Person and Customer. Writing it in Python, it would be easy to subclass Person to get Customer, and Customer would inherit Person's properties and methods. If I instead create a specialist and ZClass for each class, do I use a SkinScript to remap Person's properties into Customer? And what about the methods - Customer can't inherit Person's methods, so I have to write methods in Customer which call the same methods in Person. This seems terribly complicated... am I missing something? Another question: In Coad's examples, if a class has an 'n' order relationship to another class - say Order and OrderItems, Order would contain a list of OrderItems. Each OrderItem would contain the id of the Order it belongs to. It seems to me that it would be easier for Order to call OrderItems.getItemsForOrder(self.id), then I don't have to maintain a list in Orders, and if I add an OrderItem the Order will immediately know about it without me having to call it and tell it the OrderItem was added. Is there anything wrong with this approach? TIA, Itai -- Itai Tavor "Je sautille, donc je suis." C3Works itai(a)c3works.com - Kermit the Frog "If you haven't got your health, you haven't got anything"

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