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Wish List
by Ernesto Revilla 19 Mar '01

19 Mar '01

Hi all, some wishes: 1. integrate Zope Beans or something like this into the core. They are cool. 2. Java-applet to design UML diagrams (doesn't need to be complete, but should model class charts, with the possibility to transform the diagrams into Zope Beans. 3. make ZODB understand OQL. (Bombastic for translating relational systems into OO systems, great for prototyping). Cheers, Erny

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Design Patterns
by Ben Ocean 18 Mar '01

18 Mar '01

Hi; I'm new to Zope and Design Patterns, but I notice some wonderful similarities between the two. Can someone please help me to understand which design patterns Zope has laid into its architecture and where? The reason for my question is specifically because of the *Factory* method. Is this a straight *Factory Method* as outlined in the GoF book, or is it an *Abstract Factory*? Are Abstract Factories built into Zope's architecture? How about other creational methods, such as Prototype and Builder? How about Behavioral Methods and Structural Methods? TIA, BenO

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Re: [Zope] Acquisition
by Dieter Maurer 18 Mar '01

18 Mar '01

Axel Missbach writes: > ... unexpected acquisition behaviour ... > Where is my failure? > Is there another (better) way to do it? Jim Fulton gave a talk about Acquisition algebra at a conference. He explains the primary acquisition behaviour by the key sentence: "Containment before Context". Either look at this talk on zope.org or read the acquisition section in URL:http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html Dieter

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Re: [Zope] Upgrading 2.0 to 2.3
by Dieter Maurer 18 Mar '01

18 Mar '01

Albert Kinderman writes: > I have a site running on 2.0.1. I would like to upgrade to 2.3.x. The big step is to 2.2 because with this step Zope security model changed. There is a document from Brian explaining what need to be change (-> Zope Security on zope.org) The step from 2.2 to 2.3 will not make big problem. You plan to go directly to 2.3. Nevertheless, you need to take care of the changes introduced with Zope 2.2. Dieter

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Re: [Zope] IE caching issues
by Dieter Maurer 18 Mar '01

18 Mar '01

kosh writes: > ... apparent caching problem with IE ... We send explicit "Expires" headers (with expiration time in the past) and do not have problems. Dieter

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Re: [Zope] <dtml-tree> and ZCatalog
by Dieter Maurer 18 Mar '01

18 Mar '01

Joel Burton writes: > Unfortunately, I don't find that your section on dtml-tree, nor the I agree, it is difficult to find. I will need to tweak the style sheet for the final version or do not use section levels below 3: You find it via this path: chapter 3 DTML commands tree: interactive hierarchical display > earlier-referenced HowTo throws much light (for me, at least) on creating > a dtml-tree as I am looking for on an object that I could get from a > ZCatalog result. I do see discussions on how to entirely re-structure my > catalog to support parent_ids and such to form a tree in a database or via > attributes captured in ZSQL methods, but nothing about what I seem to be > looking for. Sorry, I do not read most messages very carefully, just thim them. Earlier questions (-> searchablge mailing list archives, Google) had the data in an external database and wanted to use the tree command to present a hierarchical view on these data. When I skimmed your message, I had the impression, that your problem was the same as the others, I had seen and responded with the Z SQL advice. But the Z Catalog is very similar to a Z SQL method (both implement the "Searchable" interface). The "tree" command requires a "branches" method or a "branches_expr" that return a list of children if applied/evaluated in a parents content. Thus, you must define such a (probably) "branches_expr". Your "branches_expr" will probably ask the Z Catalog for the children of the current node, something like: branches_expr="MyCatalog(parentId=getId())" This assumes, that each child has an attribute (or parameter less method) that returns the id of its parent. It assumes further, that this attribute is indexed. Dieter

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freebsd error
by Chris Humphries 18 Mar '01

18 Mar '01

i have python 1.5.2 (threads), freebsd, and zope installed (tryeed differenmt versions, so i know this is not an version issue). here is the error, i think something is just configured wrong or it cant find something: # ./start Traceback (innermost last): File "/usr/local/www/Zope-2.0.0b5/z2.py", line 375, in ? exec "import "+MODULE in {} File "<string>", line 1, in ? File "/usr/local/www/Zope-2.0.0b5/lib/python/Zope/__init__.py", line 94, in ? import ZODB, ZODB.ZApplication, imp File "/usr/local/www/Zope-2.0.0b5/lib/python/ZODB/__init__.py", line 85, in ? import sys, ExtensionClass, TimeStamp, cPersistence, Persistence ImportError: /usr/local/www/Zope-2.0.0b5/lib/python/ExtensionClass.so: Undefined symbol "PyMethod_Type" thanks, Chris

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RE: [Zope] ANNOUNCE: ZopeMake 1.0
by Farrell, Troy 18 Mar '01

18 Mar '01

Yes. ZopeMake uses ZClient to allow commandline scripting of imports and exports, but cannot import .zexp files that are not on the file system. I've been thinking about 2 of Zope's "problems" (security features) lately and I've almost hit some solutions. <Ask DC to turn a deaf ear> I wonder (I haven't looked) how difficult it would be to patch zope so it can import .zexp files that are already in ZODB, so that I can manage_addFile a .zexp file and then manage_importObjectFromZODB. I was thinking about using LocalFS for this, but I don't think LFS is deployed far and wide enough for this. Then again, if we get a solution for this, more people might use LocalFS. I might try to write the code if it sounds doable. It might be nice. Download ZopeMake 1.2 here: http://sourceforge.net/projects/paflow/ Troy -----Original Message----- From: Chris Withers [mailto:chrisw@nipltd.com] Sent: Saturday, March 17, 2001 6:16 AM To: p.bizzarri(a)icube.it; zope(a)zope.org Subject: Re: [Zope] ANNOUNCE: ZopeMake 1.0 > I am happy to announce ZopeMake 1.0, a couple of utilities to perform the > upload/download of .zexp files without passing through the import/export > interface. Instead, it uses the ZClient to perform directly the interaction > with Zope. Hmmm, does this suffer from the same security implications that are the reason behind DC not implementing TTW import of .zexp's? cheers, Chris _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

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Re: [Zope-Annce] Localized DateTime classes
by Oleg Broytmann 18 Mar '01

18 Mar '01

Hi! Nice... On Sun, 18 Mar 2001, svedovelli wrote: > French, but I plan in future to create a more sophisticated version which > will try to guess in which country the system is running in order to return > the proper translation. ...but why guess? Just use locale settings! Oleg. ---- Oleg Broytmann http://www.zope.org/Members/phd/ phd(a)phd.pp.ru Programmers don't die, they just GOSUB without RETURN.

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Problems with *BIG* SQL queries
by Mayers, Philip J 18 Mar '01

18 Mar '01

I've got some problems performing and returning some large SQL queries in our Zope app. The queries are reasonably quick if done straight to the SQL server, and return about 3000 to 5000 rows - the resulting HTML (generated with a dtml-in over the results) is about 600-900kbytes. But, the queries seem to take a *long* time - Zope is spinning at about 60% CPU in the thread responsible for sending the HTTP request back. Why? I've just timed it at 1:30 for 3914 rows and 586kb of HTML. The *really* odd thing is that using "test" on the same SQL query from the management interface, it takes about 10 seconds. Now, admittedly it only shows 50 rows, but surely it can't be the batching? And no, I don't want to batch the results up. Any ideas? Is it just the dtml processing that's slowing it down? If so, how can I speed it up (PythonScript to generate the HTML?) Any advice appreciated... Regards, Phil +----------------------------------+ | Phil Mayers, Network Support | | Centre for Computing Services | | Imperial College | +----------------------------------+

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