June 2008 - Zope-Dev

SQLAlchemy integration experiment
by Martijn Faassen 18 Jun '08

18 Jun '08

Hi there, In some earlier discussions a number of approaches to integrate SQLAlchemy into Zope were discussed. Following up on that, I've tried a particular approach that tries to use ScopedSessions with a custom scope that isn't just per thread, but also per site (application). The benefit of this approach is that it should allow the following to just work: from z3c.sa_integration import Session ... def somewhere_in_a_view(self): session = Session() return session.query(Test).all() where 'Session' is a custom SA scoped session. I've checked in my (documented) experiment in here: svn://svn.zope.org/repos/main/Sandbox/faassen/rdbintegration/trunk The interesting bits are here: http://svn.zope.org/Sandbox/faassen/rdbintegration/trunk/src/rdbintegration… See the documentation in that file for more information. The one bit I'm not happy about yet is the way engines need to be global utilities now. I'd like it to be possible for users to edit the database connection parameters through the web. I have a sketchy idea about how to solve this by registering engines as non-persistent local utilities, but it's still unclear how they'd get created at the right time. It might also be possible to simply implement the engine method on IDatabase to create the engine when called the first time, and then cache it in a volatile property. I think this is something Laurence Rowe has been talking about. I'm not sure whether it's a good idea to rely on the ZODB cache, but it might be possible to simply cache the engines in a global registry... Comments? Suggestions? Regards, Martijn

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Re: [Checkins] SVN: zope.app.container/trunk/src/zope/app/container/browser/adding.py 1 include per line
by Benji York 18 Jun '08

18 Jun '08

On Mon, Jun 16, 2008 at 4:42 AM, Christophe Combelles <ccomb(a)free.fr> wrote: > Log message for revision 87419: > 1 include per line Why's that? -- Benji York Senior Software Engineer Zope Corporation

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Zope Tests: 5 OK
by Zope Tests Summarizer 17 Jun '08

17 Jun '08

Summary of messages to the zope-tests list. Period Mon Jun 16 11:00:00 2008 UTC to Tue Jun 17 11:00:00 2008 UTC. There were 5 messages: 5 from Zope Tests. Tests passed OK --------------- Subject: OK : Zope-2.8 Python-2.3.6 : Linux From: Zope Tests Date: Mon Jun 16 20:55:01 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009715.html Subject: OK : Zope-2.9 Python-2.4.4 : Linux From: Zope Tests Date: Mon Jun 16 20:56:31 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009716.html Subject: OK : Zope-2.10 Python-2.4.4 : Linux From: Zope Tests Date: Mon Jun 16 20:58:01 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009717.html Subject: OK : Zope-2.11 Python-2.4.4 : Linux From: Zope Tests Date: Mon Jun 16 20:59:31 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009718.html Subject: OK : Zope-trunk Python-2.4.4 : Linux From: Zope Tests Date: Mon Jun 16 21:01:01 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009719.html

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Re: SVN: z3c.pt/trunk/ In debug mode the actual source code for file templates is written out to a <filename>.source file, to make it easier to inspect it.
by Tres Seaver 15 Jun '08

15 Jun '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hanno Schlichting wrote: > Log message for revision 87393: > In debug mode the actual source code for file templates is written out to a <filename>.source file, to make it easier to inspect it. > > Make debug mode setting explicit in a config.py. Currently it is bound to Python's __debug__, which is False when run with -O and otherwise True. I don't think I would this to __debug__: I wouldn't want to pay a price either at startup time or (worse) at render time for information I don't need or want. I think looking for an environment variable would be quite reasonable instead. Tres. - -- =================================================================== Tres Seaver +1 540-429-0999 tseaver(a)palladion.com Palladion Software "Excellence by Design" http://palladion.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFIVAmv+gerLs4ltQ4RAkMnAKChysbw0FboPfMPtSe0H2eGtGF7DgCgvK1Q XXC2UpX5L7KQ7HeGdUNr7Us= =Vofy -----END PGP SIGNATURE-----

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Zope Tests: 5 OK
by Zope Tests Summarizer 15 Jun '08

15 Jun '08

Summary of messages to the zope-tests list. Period Sat Jun 14 11:00:00 2008 UTC to Sun Jun 15 11:00:00 2008 UTC. There were 5 messages: 5 from Zope Tests. Tests passed OK --------------- Subject: OK : Zope-2.8 Python-2.3.6 : Linux From: Zope Tests Date: Sat Jun 14 21:01:37 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009705.html Subject: OK : Zope-2.9 Python-2.4.4 : Linux From: Zope Tests Date: Sat Jun 14 21:03:07 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009706.html Subject: OK : Zope-2.10 Python-2.4.4 : Linux From: Zope Tests Date: Sat Jun 14 21:04:38 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009707.html Subject: OK : Zope-2.11 Python-2.4.4 : Linux From: Zope Tests Date: Sat Jun 14 21:06:08 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009708.html Subject: OK : Zope-trunk Python-2.4.4 : Linux From: Zope Tests Date: Sat Jun 14 21:07:38 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009709.html

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Re: [Zope3-Users] is it possible to copy object b/w two zodb Database
by Jim Fulton 14 Jun '08

14 Jun '08

On Jun 11, 2008, at 10:36 AM, rahul bhaskar wrote: > Hi, > I am facing some problem with merging two zodb file. > is it possible to open two zodb Database at a time and copy object > from one to another. Yes, using the export/import mechanism. Jim -- Jim Fulton Zope Corporation

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buildout failures
by Martin Aspeli 14 Jun '08

14 Jun '08

How many of these do we need? zope-dev is almost unreadable at the moment due to the number of buildout failure emails. Martin -- Author of `Professional Plone Development`, a book for developers who want to work with Plone. See http://martinaspeli.net/plone-book

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Zope Tests: 5 OK
by Zope Tests Summarizer 14 Jun '08

14 Jun '08

Summary of messages to the zope-tests list. Period Fri Jun 13 11:00:00 2008 UTC to Sat Jun 14 11:00:00 2008 UTC. There were 5 messages: 5 from Zope Tests. Tests passed OK --------------- Subject: OK : Zope-2.8 Python-2.3.6 : Linux From: Zope Tests Date: Fri Jun 13 20:55:14 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009700.html Subject: OK : Zope-2.9 Python-2.4.4 : Linux From: Zope Tests Date: Fri Jun 13 20:56:45 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009701.html Subject: OK : Zope-2.10 Python-2.4.4 : Linux From: Zope Tests Date: Fri Jun 13 20:58:16 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009702.html Subject: OK : Zope-2.11 Python-2.4.4 : Linux From: Zope Tests Date: Fri Jun 13 20:59:46 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009703.html Subject: OK : Zope-trunk Python-2.4.4 : Linux From: Zope Tests Date: Fri Jun 13 21:01:16 EDT 2008 URL: http://mail.zope.org/pipermail/zope-tests/2008-June/009704.html

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new BTreeContainer implementation, please review
by Christophe Combelles 14 Jun '08

14 Jun '08

Hi, While fixing some bugs in zope.app.container, I've also modified the implementation of the BTreeContainer, by not inheriting from the SampleContainer, and directly accessing the btree. This had remained as a TODO in the btree.py file, so I did it, but... The result is all previous persisted BTreeContainers (such as PrincipalFolder) are broken because the btree used to be stored in self._SampleContainer__data, while the new implementation stores it in self._BTreeContainer__data. So I've added a property to offer a transparent backward compatibility: def _get__data(self): try: return self._BTreeContainer__data except: return self._SampleContainer__data def _set__data(self, value): try: self._BTreeContainer__data = value except: self._SampleContainer__data = value def _del_data(self): try: del self._BTreeContainer__data except: del self._SampleContainer__data __data = property(_get__data, _set__data, _del_data) Do you think it is safe? Is there any better solution for this? Should I rather write an evolution script? Or should I revert all this back to inheriting from SampleContainer? Christophe

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Zope2_Porting-Fixing module Acquisition
by ranjith kannikara 13 Jun '08

13 Jun '08

Hi, During the porting of Zope2 to python2.5 , the failures in the module Acquisition is regarding the C-API changes. This failures can be removed by mapping the function Wrapper_compare to tp_richcompare which is now mapped in to the tp_compare in the extension file Acquisition/_Acquisition.c. Part of the new code I introduced was copied from datetimemodule.c from Python 2.5 . Right now its not showing any failures or errors with both python2.4 and python2.5. The patch is http://svn.zope.org/Zope/branches/gsoc-python-2.5/?rev=87371&view=rev Please review this patch. Is this changes and the function from datetimemodule.c. If not is there any suggestions?

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