- Zope-Dev - Zope lists

persistence and lists
by Arndt Droullier 18 Sep '02

18 Sep '02

Hello, I´m working on a product which contains custom data in a list of multiple dictionaries. How can I save the list/dictionaries after changes? Persistence is enabled (and works for other types), and "_p_changed" is set, also get_transaction().commit() is called. A second problem is that multiple instances of the product reference the same list. So if I change the list of one of the instances the other changes, too. The list and dictionaries are stored in a class variable(in the product) and not global. Thanks, Arndt. _______________________________________________________________________ DV electric ad(a)dvelectric.com http://www.dvelectric.com Fon 0221/2725782 Fax 0221/2725783 Burgmauer 20, 50667 Köln _______________________________________________________________________

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PANIC!!! That old refresh bug again.
by Lennart Regebro 18 Sep '02

18 Sep '02

Once again I have the problem that all references to imported modules/objects/whatever dissapear when refreshing. It seems like sometimes some modules are not refreshed, even though they really are. Could it be that not all modules are properly purged from memory, and then when Zope core calls our newly refreshed system, it calls old versions of the modules, which now have lost all connection to the outer world, since they no longer exist? Or what? Having to restart each time I make a change is slowing down my development to a complete halt. I don't have time with this, PLEASE I need all help I can get. Any stupid ideas or thoughts are welcome. I HAVE to fix this. Best Regards Lennart Regebro, Torped http://www.easypublisher.com/

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Re: [Zope-Coders] Proposal: put i18n into 2.6
by Lennart Regebro 18 Sep '02

18 Sep '02

From: "Florent Guillaume" <fg(a)nuxeo.com> > As Jim said, "If we want to get this into 2.6, we need to move quickly." I want it in. It's so amazingly useful, that I want it. 2.6 is moving so slow anyway, that I don't see it as a big problem. Best Regards Lennart Regebro, Torped http://www.easypublisher.com/

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plone.org - chrism_installer_branch
by alan runyan 17 Sep '02

17 Sep '02

Hi. just wanted to drop you guys a line and say that chrism_installer_branch will save the world. But I have some questions: Chris said its based on HEAD. Whats the difference between HEAD and Zope-2_6-branch? I probably shouldnt be running HEAD in production? I am having severe leakage here are some refoucnts: DateTime - 62263 IOBucket - 32641 PloneFolder - 22766 User - 22196 PersistentMapping - 12846 CMFDefault.Document.Document - 12820 I have have the python security machinery turned on. should I move to Zope2.6 branch instead of trying to fight? what would I look at next? ~runyaga

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Re: [Zope-dev] limit to number of operations in a transaction?
by Karl Anderson 17 Sep '02

17 Sep '02

"Christopher N.Deckard" <chris(a)globalfoo.net> writes: > I have roughly 1,500 people in the database. I wrote a script to > migrate the people. Basically it does getProperty for each property > on each person folder, then creates the new person object which uses > XML. Zope apparently cannot handle this number of operations in one > transaction. Zope gets slower and slower and eventually becomes on > responsive. It looks like the script has completed, but nothing is > ever committed to the ZODB, and since Zope is unresponsive it must > be restarted. This, as expected, kills that entire transaction > which was never committed. > > Is it known that large numbers of operations, such as above, in a > single transaction can cause problems? A transaction, of course, > being a request, and an operation being something like > manage_addProduct. In practice I've only seen problems when I'm dealing with lots of data and need to be thinking about this anyway :) > I've solved the "problem" by using xmlrpc and for person in people > calling my migrate_person script for only one person at a time. > This is SO MUCH FASTER. I previously ran the script that migrates > all of the people, and after 8 hours it still had not completed. As Jens replied, this is because the transactions are getting committed for each person, and you can do this without xmlrpc by committing in your script. The possible drawback of committing after each person is that you're committing a new version of the object being modified. Depending on how you're storing the stuff this can grow your ZODB - if every person is a node in a single ParsedXML document, you'd be storing 1500 versions, each one person bigger than the last. You can use transactions and subtransactions to juggle database size, memory usage, and temp file usage. -- Karl Anderson kra(a)monkey.org http://www.monkey.org/~kra/

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Inno vs Wise. Why not Soysal setup
by James Johnson 16 Sep '02

16 Sep '02

I'm not sure if I can or suppose to post at zope-coders, but this is where I got the topic from. Has anybody tried soysal setup before? I've tested it out in the past. I like it because it seems flexible enought and has a web update feature you can add to your installation. Just imagine being able to update zope from the Internet on win32. I think it would make the *nix people jealous ;-). Here is the URL for it. http://soysal.com/ssetup My take on the whole matter is that you should use a freeware installer instead of a commercial one. I for one being a student can't afford the WISE installer. Seeing that I'm a strong supporter of freeware/opensource I'm not sure I would buy it if I could afford it. That being the case maybe we can compile a list of potential free/opensource installers and have a community vote. Peace, -- James I am a Washington State Citizen. Spamming this Email Address may be against Washington State Law Chapter 19.86, and 19.190 RCW. http://www.wa.gov/ago/junkemail/protect.html _________________________________________________________________ Join the worlds largest e-mail service with MSN Hotmail. http://www.hotmail.com

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[Fwd] looking for Python programmers
by Guido van Rossum 16 Sep '02

16 Sep '02

Maybe *this* is the right address??? --Guido van Rossum (home page: http://www.python.org/~guido/) ------- Forwarded Message Date: Mon, 16 Sep 2002 16:24:45 -0300 From: mcolli(a)SyscomCipher.com.ar To: python-dev(a)python.org Subject: [Python-Dev] looking for Python programmers Hi, I would like to know how can I do to get information about Python programmers that could be interested to work in a Zope/Python project in Buenos Aires, Argentina. Is this the right address to contact? Many thanks and regards Mariela _______________________________________________ Python-Dev mailing list Python-Dev(a)python.org http://mail.python.org/mailman/listinfo/python-dev ------- End of Forwarded Message

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Security assertions / non-acquired objects
by sean.upton＠uniontrib.com 16 Sep '02

16 Sep '02

I have been spending a bunch of time pulling my hair out on this one, so any insight that anyone might have would be appreciated. I have been building a product that takes advantage of a module that I have built to query an external data source (NNTP server for AP wire stories) for items to be imported into a CMF site. The product has an adapter that returns a list of temporary objects to get access at external data. The query method for the adapter that I have set up returns a plain-old list of objects of a custom class; I would like to be able to get access to these objects and their methods with TTW python scripts. However, no matter what security assertions I put into the class for the said objects, I still get something along the line of: The container has no security assertions. Access to 'Title' of (APStory instance at a6704a0) denied. I'm not sure if the security assertions are not working because the objects within the list returned by my adapter object have no acquisition context, or if the issue is something different... So say I have some method (that is itself declared as public) that returns something like this: [<APStory instance at aaa08b0>, <APStory instance at b2c7168>, <APStory instance at b442a28>, <APStory instance at b1e9a60>, <APStory instance at a8fa7a8>, <APStory instance at a406a28>, <APStory instance at a676f48>] ...without any problems (for example, I can traverse via URL to get this), where each APStory object is a temporary, in-memory list that is just the return value of my function. However, whenever I try to access any of these objects within the list from a TTW python script, I get Access denied. All I really want is to be able to access all the methods of each of these objects without interference from Zope's security mechanism. I'm totally baffled on this one (I've been through about 4 cups of coffee already on this problem alone). I'm using Zope 2.6a1 with VerboseSecurity installed. Any help or pointers is greatly appreciated. Sean +----------------------------------------------------------- | Sean Upton | Site Technology Supervisor SignOnSanDiego.com | Development & Integration The San Diego Union-Tribune | 619.718.5241 sean.upton(a)uniontrib.com | PATH_TO_THE_DARK_SIDE = 'c:\winnt\system32' +-----------------------------------------------------------

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FreeBSD, Zope and Plone
by alan runyan 16 Sep '02

16 Sep '02

I have just spent several hours trying to get plone.org back up. It appears that Plone and FreeBSD are not made for each other. I end up getting core dumps. I applied the 'thread stack' patch. I also tried to use Python2.2.1 w/ chrism_installer branch and I get the same results. I am most likely going to move away from FreeBSD to Linux - which is a shame, one less FreeBSD/Zope/Plone combination running in the wild. I know the iMeme guys have Plone running but I have seen really freakish behavior there as well. So I am giving up. If someone wants to hand hold me - I will try again but in a few minutes I'm moving the Data.fs file to a linux box and trying to get plone.org back up. Notes from my experience: - chrism_installer_branch is *very very* nice - thanks ChrisM. - seemingly large file support is never turned on by default in python tarballs. I think this is a shame. I dont know the reasons but reading the posix large file page is very scary. Zope Corp should always enable large file support on all of their python interpreters. - Its really depressing that Python/FreeBSD/Plone have this problem. iirc yahoo.com runs lots of FreeBSD boxens running python for some of their services. but the fact that I have spent some 3 hours trying to get all of this to work and Plone still causes python to core dump is a huge shame. CMF sites work fine. Plone site crash. I have never seen Plone crash on either win32 or linux. This is FreeBSD problem. please help make Zope/Python/*BSD work together gurus - your our only hope. I remember asking the python maintainer to up the thread stack size in python2.1.2 and his response was something like - if your requiring more than whats allocated you have serious problems. ~runyaga

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Zope-Dev digest, Vol 1 #1829 - 2 msgs
by TGERMAINE＠UPei.CA 15 Sep '02

15 Sep '02

I am away on vacation until Sept 16. If your inquiry is urgent please resend your request to Chris Martin (cmartin(a)upei.ca) and he will look after it. Alternatively, you can call Chris at 566-0604 Tom Germaine Access Services Administrator

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