[Zope] Why the same directories:instance and skel
I found thar subdirectory instance has completly the same as subdirectory skel in zope's home directory.What consideration for that from point of view of software designing?Thanks a lot. -- Steve Han ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] How to setup and show zope server's homepage to clients?
Forgive me for unpatience.I installed zope as server to serve business's content as homepage.How can I do that using ZMI?First make a folder and then.. Thanks a lot. -- Steve Han ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Simple high-level question - mabye about WEBDAV?
Chris McDonough wrote: How does it not work? I enter an URL which would render the index_html method as a Network Place and all I get is an error message: The folder you entered does not appear to be valid. Please choose another. Webfolders doesn't allow setting permissions on folders or files on a share. You'll need to do this through Zope's security interface via a browser. I assumed as much... if I can find a product (or other pre-cooked near-solution) for this then that would be great. :-) I suspect the situation is this: you will likely need a need a content management or a fat client or both if you want users to be able to manage security via a normal (nothing really normal about it, IMO, but...) Explorer window. I don't absolutely need an explorer window - but a drag-n-drop interface is desirable - and Windows it the most likely remote OS. Zope has a completely different security model than either UNIX or Windows, so something needs to map its notion of security to the client's. Plain-old-webfolders won't help here. Fair enough - though I will need to manage this aspect of the solution somehow. I wonder why you don't just use a Windows share here? What does Zope give you that it wouldn't in this case? There are several reasons I don't want to use a windows shared folder... including: * I need to support access to the web-share through corporate web-proxies which only allow HTTP/HTTPS access to the outside world. * Access to the web-share should be supported even from non-MS platforms. * No need to expose a Windows/SAMBA port to the internet at large (including the myriad security issues that would incur.) * Administration only necessary for users of the portal - no separate system for users of the web-drive. * No need to install software on remote sites to access a private virtual network. I'm sure there are other advantages too... Steve ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Simple high-level question - mabye about WEBDAV?
I am looking to extend a zope portal to allow authenticated users to upload/download files... the idea being to support a shared drive containing various files available over HTTPS and available anywhere there is web-access. Ideally this notional 'web-drive' should be accessible using Windows Web Folders -but I'd also like for it to support ACL-style permissions with respect to file-access by other authenticated users. Are there any products which already address this requirement? ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Simple high-level question - mabye about WEBDAV?
Chris McDonough wrote: OK, well, Zope works out of the box with DAV clients, so... I've read that too... but (maybe I'm just being dumb here) I can't connect to my zope server via the Add Network Place wizard just by specifying a URL for my zope-server which my web-browser accesses fine. Can you point me at a how-to? How does this integrate with permissions? Will I need a web-based interaction to set-up ACLs for files? ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Custom authentication page...
I'm just starting to look at Zope as a potential platform to implement a simple authenticated web site... however I do not want to face users with the standard web-browser dialogue, but rather my own log-in page. I've established how to restrict access based upon permissions etc... and I'm able to set/reset cookies based a form submission - but do not see how to integrate an HTML login page with the standard Zope security. I've read that I should use the Cookie Crumbler product... but after I've added this to the folder that I intend to protect, I click on cookie_authentication (the default name for the Cookie Crumbler object) and I get the following error message: -- An error was encountered while publishing this resource. *Error Type: AttributeError* *Error Value: aq_parent* -- Is this a bug with Cookie Crumbler (version 0.3 downloaded from zope.org used against Zope 2.9.4, python 2.4.3, win32)? Am I barking up the wrong tree in hoping to have a slick-looking logon page? Is this something commonly done using Zope? Is Cookie Crumbler the right product? Would I be better hand-coding this myself? ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Custom authentication page...
David H wrote: I've read that I should use the Cookie Crumbler product... but after I've added this to the folder that I intend to protect, I click on cookie_authentication (the default name for the Cookie Crumbler object) and I get the following error message: Thats a weird one ... but cookie crumbler is great to get custom login forms It looked as if it should be... :-) Did you try deleting it and adding another (cookie_authentication object)** Maybe you added a property thats non-existent? (login page id or something?) I tried that - I even tried installing a fresh version of Zope and creating a new instance... I followed some instructions: http://www.zopelabs.com/cookbook/1073516045 My experiences started to differ when I got a cookie_authentication instead of a login object... I was unable to display the properties tab for cookie_authentication (step 8) as that generates the error... you can produce a fuller error traceback If necessary add dtml-var error_tb to your standard_error_message (if using dtml) for a clearer error expression That generates: Traceback (innermost last): * Module ZPublisher.Publish, line 115, in publish * Module ZPublisher.mapply, line 88, in mapply * Module ZPublisher.Publish, line 41, in call_object * Module Products.CookieCrumbler.utils, line 115, in manage_propertiesForm * Module Shared.DC.Scripts.Bindings, line 311, in __call__ * Module Shared.DC.Scripts.Bindings, line 346, in _bindAndExec * Module Shared.DC.Scripts.Bindings, line 1, in ? * Module Shared.DC.Scripts.Bindings, line 265, in _getContext ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Custom authentication page...
Olavo Santos wrote: Is this a bug with Cookie Crumbler (version 0.3 downloaded from zope.org used against Zope 2.9.4, python 2.4.3, win32)? That is a really old version. Go here: http://hathawaymix.org/Software/CookieCrumbler Upgrade to version 1.2. :-) Sorted; Thanks! I had been using the version published on zope.org, as opposed to the one on hathawaymix.org - I'd expected the version hosted on the main zope site to at least work... :-) The comments do mention hathawaymix.org, but don't give that full URL - and http://hathawaymix.org/ doesn't take me somewhere useful to me... ) Steve ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Windows Server 2003, II6 and ASP404 vs form posts
Anyone out there using Zope inside IIS 6 on Server 2003 via the ASP404 technique? I've done this successfully on Windows 200 and XP, but on Server 2003, IIS does not seem to be passing the post data to the error handler. When Win2003 was young, there was some list traffic on a similar problem, and Brian Sullivan figured out that IIS was reporting a REQUEST_METHOD of GET even for POST requests. However, the POST data was still passing, so it was possible to check Request.totalBytes (this is the ASP Request, not Zope's) to determine the real nature of the request. Now, though, many an IIS patch later, IIS is invoking the error handler with http content length set to zero (even though it reports that content type is www-urlencoded). So, form submissions do nothing. And, if there's nothing to be done about this, does anyone know if the Fresh Logic or Enfold ISAPI solutions have any way to intermix serving of IIS and Zope content? If I didn't have to do that, I'd be using Apache, and be done by now ;) . Thanks! ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Re: Newbie install from source
Hi Courtesy reply ( I did not cc zope@zope.org) Regarding posting to a Plone list you're right :-) I was so busy learing how to install on Linux from source I did not notice that I had signed up to not quite the appropriate mailing list for my question. I think I'll lurk though and soak up some of you kind folks wisdom. Thanks. Its running fine now. Regards Steve ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: Zope on Solaris
Brian Sullivan wrote: ... Matt Hamilton's report is still probably your best resource if you find yourself with the gun to your head: http://www.zope.org/Members/glpb/solaris OK -- I get the picture I think ;-) I will try to dodge the Solaris bullet if I can. Just for the record, the conclusion of the cited report (once you read to the postscript http://www.zope.org/Members/glpb/solaris/report_ps#2) was: People really shouldn't be afraid of running python/zope on solaris, especially in multi-cpu environments, as long as they understand how python works, because you actually have much better resource control than pretty well any other O/S out there, but as they say use the right tool for the job, and make informed decisions ;-) Also, the concerns about Solaris were related to poor performance under Solaris 8 on a multi-Sparc platform. Anybody got any more recent information that might apply to Solaris 10 or to an Opteron platform? ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] FTP Failures on new install
I've having trouble getting FTP working on a new Zope install. All other Zope functions appear normal, but I'm unable to transfer files _to_ Zope via FTP. I can use FTP to download files from the Zope server and can create new directories on the server. But attempts to transfer files to the server all result in 426 Error creating file errors. ftp put test.html 200 PORT command successful. 150 Opening ASCII connection for test.html 426 Error creating file. The problem is not a firewall problem; I can reproduce it with local ftp sessions and with no firewall in place. I've tried several Zope versions from 2.6 to 2.7.7. All have the same problem. Common to the attempts is that they were all source builds with Python version 2.3.3 (#1, Mar 10 2004, 06:42:32) [GCC 3.3.2] on Solaris 10 on a dual-Opteron Sun V20Z. I'd be happy to update the Python version if anyone thinks that might cure the problem. Thanks! Steve McMahon ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: FTP Failures on new install
Sorry, I should have mentioned that there are no traces of the problem in the error log. Z2.log entries look routine, except for the ftp error itself. Dieter Maurer wrote: Steve McMahon wrote at 2005-8-4 08:28 -0700: I've having trouble getting FTP working on a new Zope install. All other Zope functions appear normal, but I'm unable to transfer files _to_ Zope via FTP. I can use FTP to download files from the Zope server and can create new directories on the server. But attempts to transfer files to the server all result in 426 Error creating file errors. ftp put test.html 200 PORT command successful. 150 Opening ASCII connection for test.html 426 Error creating file. Visit your error_log object (in Zope's Root Folder (ZMI!)) and see what it tells you about the problem... ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Re: FTP Failures on new install
Switching to python 2.4.1 cured the problem. Steve McMahon wrote: I've having trouble getting FTP working on a new Zope install. All other Zope functions appear normal, but I'm unable to transfer files _to_ Zope via FTP. I can use FTP to download files from the Zope server and can create new directories on the server. But attempts to transfer files to the server all result in 426 Error creating file errors. ftp put test.html 200 PORT command successful. 150 Opening ASCII connection for test.html 426 Error creating file. The problem is not a firewall problem; I can reproduce it with local ftp sessions and with no firewall in place. I've tried several Zope versions from 2.6 to 2.7.7. All have the same problem. Common to the attempts is that they were all source builds with Python version 2.3.3 (#1, Mar 10 2004, 06:42:32) [GCC 3.3.2] on Solaris 10 on a dual-Opteron Sun V20Z. I'd be happy to update the Python version if anyone thinks that might cure the problem. ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope-dev] More Transience weirdness in 2.7.1b1
A slight correction for any of you trying to reproduce this at home :-) I only pretended to change over to filestorage (dream, nightmare, who knows), in reality, I was still using tempstorage. Steve The same thing happened yesterday and re-starting Zope seemed to get things working again. After the problem yesterday, I changed my temp database to use filestorage to see if that would help. No luck, the problem showed up again today. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
[Zope-dev] {Spam?} Re: [Zope3-dev] Re: RFC: TALES adapters and TAL/Tales variable namespaces
Of course, Steve suggested: ob:adaptername context:dc/title This really doesn't make sense. To me it reads In the namespace of context get the title of dublin core. I'm not reading : as having anything to do with namespaces. Rather, I see '/' as the traverse operator, and : as the adapt operator. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [ZODB-Dev] Re: BTrees strangeness (was Zope 2.X BIG Session problems - blocker - our site dies - need help of experience Zope developer, please)
Good morning. I just got in and checked on my customer's system. In the past 22 1/2 hours they've had 15000 page hits and last night at about 9:30, ONE person got a KeyError. Actually, this same person got twenty KeyErrors over a period of about 45 seconds. I'm downloading their log files now and plan to spend some time this morning going through them. Anyway, it appears that I was wrong when I said that the problem doesn't show up when I use FileStorage (although it does seem to happen less frequently -- but who can be sure of anything at this point?). In answer to your questions earlier, Chris, we set up the user session at login time because we make the user answer some questions at login time that determine which portions of the interface to present to him/her. For example, using the same login id and password, a user may choose to login as an administrator or as a normal user. We store this choice and other info based on this choice in the session. Also, we don't rely on the browser to time out the authentication cookie. Once a user authenticates with ExUserFolder, ExUserFolder keeps their credentials in a cache until they have been inactive for 10 minutes (the timer resets with each cache hit). If their credentials are not in the cache, rather than looking them up again, the user is logged out and must re-authenticate. It seems like a reasonable way to handle logins and sessions. In addition to going through log files, I will spend some more time today making sure we're not doing something stupid in our app. Thanks again (to Chris, Michael, Alex and everyone else who has lost sleep over this session stuff). I'll keep you posted on any new information I find. Steve Chris McDonough wrote: On Mon, 2004-05-17 at 23:08, Chris McDonough wrote: There indeed is a minor off-by-one error: it manifests itself as sessions timing out at most 20 seconds early. But there is also a deeper issue which involves the fact that a session data object is not properly removed from an older bucket when it moves due to being accessed in a later timeslice; the symptom only appears when a browser id is reused to start a session after it was used to start an older one that had timed out normally. I've got almost no clue why this happens at this point, but I'm working on it. Ugh. This is almost certainly what Steve is experiencing. I take that back. Actually, I think I was just reading the test results and debug output wrong. It appears to be operating normally except for the off-by-one problem (which is minor). I need to jack up the tests to do some comparisons of data values; currently I'm just testing to ensure that *something* is in the session.. I need to test if the right thing is in the session over time. - C ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [ZODB-Dev] Re: BTrees strangeness (was Zope 2.X BIG Session problems - blocker - our site dies - need help of experience Zope developer, please)
Well, after much log reading, I have found that the KeyError we got last night was OUR fault. I will fix the problem with our app, then I want to change back to TemporaryStorage and watch the system some more. I'll keep you posted. Here's the brief explanation of our problem (you can skip it if you like): A user logged in and did some stuff then left his browser for almost an hour. When he returned and tried to do more stuff, he was no longer in the ExUserFolder's credential cache and his session had expired. He was forced to log in again. Upon supplying his ID and password, he was sent to the loginSuccess page. This is the one that calls our method to set up his user session. The Z2.log shows a 302 result code on this page. His browser had the loginSuccess page in cache, so it did not request it again and his session was never re-created. Score one for Chris's suggestion on how we should be setting up the user's session. For now, however, I think I'll just add the please-don't-cache-me header stuff to the RESPONSE. Steve Jibson wrote: Good morning. I just got in and checked on my customer's system. In the past 22 1/2 hours they've had 15000 page hits and last night at about 9:30, ONE person got a KeyError. Actually, this same person got twenty KeyErrors over a period of about 45 seconds. I'm downloading their log files now and plan to spend some time this morning going through them. Anyway, it appears that I was wrong when I said that the problem doesn't show up when I use FileStorage (although it does seem to happen less frequently -- but who can be sure of anything at this point?). In answer to your questions earlier, Chris, we set up the user session at login time because we make the user answer some questions at login time that determine which portions of the interface to present to him/her. For example, using the same login id and password, a user may choose to login as an administrator or as a normal user. We store this choice and other info based on this choice in the session. Also, we don't rely on the browser to time out the authentication cookie. Once a user authenticates with ExUserFolder, ExUserFolder keeps their credentials in a cache until they have been inactive for 10 minutes (the timer resets with each cache hit). If their credentials are not in the cache, rather than looking them up again, the user is logged out and must re-authenticate. It seems like a reasonable way to handle logins and sessions. In addition to going through log files, I will spend some more time today making sure we're not doing something stupid in our app. Thanks again (to Chris, Michael, Alex and everyone else who has lost sleep over this session stuff). I'll keep you posted on any new information I find. Steve ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [ZODB-Dev] Re: BTrees strangeness (was Zope 2.X BIG Session problems - blocker - our site dies - need help of experience Zope developer, please)
:-( I grabbed Transience.py and TemporaryStorage.py from the Zope-2_7-branch of CVS this morning and dropped them onto one of our customer's systems. About 20 minutes later I found the following in the error_log: Traceback (most recent call last): File c:\Zope-2.7\lib\python\ZPublisher\Publish.py, line 100, in publish request, bind=1) File c:\Zope-2.7\lib\python\ZPublisher\mapply.py, line 88, in mapply if debug is not None: return debug(object,args,context) File c:\Zope-2.7\lib\python\ZPublisher\Publish.py, line 40, in call_object result=apply(object,args) # Type scr to step into published object. File c:\Zope-2.7\lib\python\OFS\DTMLDocument.py, line 128, in __call__ r=apply(HTML.__call__, (self, (client, bself), REQUEST), kw) File c:\Zope-2.7\lib\python\DocumentTemplate\DT_String.py, line 474, in __call__ try: result = render_blocks(self._v_blocks, md) File c:\Zope-2.7\lib\python\OFS\DTMLDocument.py, line 121, in __call__ r=apply(HTML.__call__, (self, bself, REQUEST), kw) File c:\Zope-2.7\lib\python\DocumentTemplate\DT_String.py, line 474, in __call__ try: result = render_blocks(self._v_blocks, md) File c:\Zope-2.7\lib\python\OFS\DTMLDocument.py, line 121, in __call__ r=apply(HTML.__call__, (self, bself, REQUEST), kw) File c:\Zope-2.7\lib\python\DocumentTemplate\DT_String.py, line 474, in __call__ try: result = render_blocks(self._v_blocks, md) File c:\Zope-2.7\lib\python\DocumentTemplate\DT_Util.py, line 201, in eval return eval(code, d) File string, line 1, in expression File c:\Zope-2.7\lib\python\AccessControl\ZopeGuards.py, line 67, in guarded_getitem v = object[index] File c:\Zope-2.7\lib\python\Products\Transience\TransientObject.py, line 170, in __getitem__ return self._container[k] KeyError: 'accountType' After getting the error, I changed them over to FileStorage. I haven't seen any errors since then. I will be more than happy to spend some time doing whatever I can to help track this down and/or test updates. Steve Chris McDonough wrote: On Sat, 2004-05-15 at 23:55, Steve Jibson wrote: quite yet been vetted (see earlier posts in this thread regarding Publish.py). This should work itself out over the next week or so I suspect. Relatively speaking, this is only a minor concern. It just means I shouldn't try to access session in the standard_error_message until a solution is found. We were doing that in our product and I've already pulled that out. After all, there are NEVER any errors, so why should we need to monkey with standard_error_message ;-) It would be nice, for completeness, if this were resolved for 2.7.1. Yes, it should work itself out over the next week or so, and definitely before 2.7.1. Am I safe just dropping those two files from CVS into an existing 2.7 site or do I need to grab everything else from the Zope-2_7-branch? I think you should be safe with just those two, but were I you I would just get the 2.7 branch out of CVS in its entirety (then you can update more easily if there are fixes). Note that if you have transient object containers in a permanent storage (like FileStorage), the operation is pretty much a one way one if you want to keep the data in the transient object container: you can go to the new code, then go back to the old code if necessarfy, but you will likely lose data in the TOC if you do. Obviously this doesn't effect stuff in a TemporaryStorage (because it goes away when Zope is shut down). - C ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [ZODB-Dev] Re: BTrees strangeness (was Zope 2.X BIG Session problems - blocker - our site dies - need help of experience Zope developer, please)
Chris McDonough wrote: On Mon, 2004-05-17 at 13:06, Steve Jibson wrote: I'm sure 'accountType' should have been in the session. Immediately after a user logs in we populate his session with a bunch of stuff (including accountType). What happens when the session expires and he's still logged in? We're using ExUserFolder for authentication. We have it set to log users out after 10 minutes. We have sessions set to expire after 20 minutes. So, in theory, it should never happen. Also, since my last Zope restart (3hr 30min), I've had 57 users let their authentication timeout and then access the site (forcing another login), and still no errors with session. (It's still using FileStorage). 1 - After having the system run for 45 minutes, I had 8 similar errors. Some were on different web pages and some had different keys that were causing the error. 2 - I have also traced through Z2.log and followed the same path through the web site that produced one of the errors and I did not get an error. 3 - Since changing this server to use FileStorage (1hr 39min ago), there has not been a single error. Is there anything I can do to help here? A small reproducible test case would help if you still believe this error is not in your own application. I'm sure you know by now that this is easier said than done. Over the past few weeks, I've probably put close to 30 hours into just trying to reproduce (on demand) these session errors. I'll probably want to look at the test rig you and Michael have been using. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [ZODB-Dev] Re: BTrees strangeness (was Zope 2.X BIG Session problems - blocker - our site dies - need help of experience Zope developer, please)
Chris, Okay, correct me if I'm wrong. This means the big ugly SESSION problem his completely fixed. If so, you are my new best friend! (whether you like it or not). Anyway, I'll put your updates (TemporaryStorage.py and Transience.py) on a couple of my customer's systems (that have been experiencing regular KeyErrors in SESSION) on Monday and I'll let you know if I see any problems. This is pretty big. If all goes well with testing (I assume Michael will be testing your latest stuff as well), I think this is important enough that y'all should consider a 2.7.1 release with this fix. Thanks again! (I know you've probably lost some hair and a bit of sanity over this one.) Chris McDonough wrote: On Thu, 2004-05-13 at 18:11, Tres Seaver wrote: Chris McDonough wrote: Largely due to Michael I believe I have isolated and fixed every reported sessioning error except this (still-difficult-to-reproduce-but-definitely-still-existing) KeyError bug in temporary storage. I can let the test rig run for several hours; it happens maybe once every hour or two, so I've not gotten the provocation of it down to a science yet. It doesn't occur when the transient object container is placed in a FileStorage. I have now figured out where the KeyError from TemporaryStorage was coming from and have checked in a fix on the 2.7 branch and HEAD. - C ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [ZODB-Dev] Re: BTrees strangeness (was Zope 2.X BIG Session problems - blocker - our site dies - need help of experience Zope developer, please)
Chris McDonough wrote: On Sat, 2004-05-15 at 23:11, Steve Jibson wrote: Chris, Okay, correct me if I'm wrong. This means the big ugly SESSION problem his completely fixed. If so, you are my new best friend! (whether you like it or not). Well, I'm afraid I will need to correct you. ;-) There is one more corner case that hasn't been covered that exhibits itself when a session is accessed from within the standard_error_message. It requires a change in the main publishing code, for which exists a patch that hasn't quite yet been vetted (see earlier posts in this thread regarding Publish.py). This should work itself out over the next week or so I suspect. Relatively speaking, this is only a minor concern. It just means I shouldn't try to access session in the standard_error_message until a solution is found. We were doing that in our product and I've already pulled that out. After all, there are NEVER any errors, so why should we need to monkey with standard_error_message ;-) It would be nice, for completeness, if this were resolved for 2.7.1. Anyway, I'll put your updates (TemporaryStorage.py and Transience.py) on a couple of my customer's systems (that have been experiencing regular KeyErrors in SESSION) on Monday and I'll let you know if I see any problems. Thanks... make sure you use the latest code from the Zope-2_7-branch in CVS. Am I safe just dropping those two files from CVS into an existing 2.7 site or do I need to grab everything else from the Zope-2_7-branch? ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Zope 2.X BIG Session problems - blocker - our site dies - need help of experience Zope developer, please
Chris, I'm not sure if you'd even planned to, but have you looked over this replacement Transience.py? Do you have an opinion on the re-implementation? I plan on looking over it myself, but even if I like it, I'd sleep better while it runs on my customer's servers if I knew it had your blessing. Thanks, Steve Chris McDonough wrote: I installed new Transience.py. During my little test it works fine. But real test will be on Monday when students start logging in as complete classes, sometimes there are hundreds of them logging on simultaneously, so we will see. Any news? ;-) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Heads up: tag 2.7 beta 3 Tuesday
We're always happy about another beta release, but do you think you guys will have a chance to look into the reported session (thread safety?) errors before beta 3? I posted and sent some failing test results to Chris a couple of weeks ago. Thanks, Steve Brian Lloyd wrote: I'd like to plan to tag Zope 2.7 beta 3 this coming Tuesday and release it. Please make sure anything you may still be doing on the Zope-2_7-branch is wrapped up by Monday evening (EST). Thanks! Brian Lloyd[EMAIL PROTECTED] V.P. Engineering 540.361.1716 Zope Corporation http://www.zope.com ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
[Zope-dev] SESSION loosing data when system has multiple users
We have been using Zope 2.7.0-beta2 and we have been having a bit of trouble with SESSION loosing data when we have more than one user on the system. These problems usually show up as KeyErrors when a particular data element in SESSION cannot be found. If I set the zserver threads to 1 in zope.conf, the problem seems to go away (but the system isn't really usable either). So I assumed it was a thread-safety problem in the SESSION code. I decided to be brave and take a look at the code. To my surprize, I found a test file called stresstestMultiThread.py in the lib/python/Products/Sessions/stresstests directory that seemed to be the exact thing I wanted to test. It wouldn't run without a couple of minor modifications, but once I got it running, with more than three or four threads, the tests fail (never complete). Is this test file still valid? It looks like it hasn't been modified for almost a year now. If it is valid, has anyone looked into getting the tests to pass. I will probably look into it more myself, but before I do, I just want to make sure I'm not headed down a dead-end street. Thanks, Steve P.S. - The tests failed in both the 2.7.0b2-src and the what is currently in cvs. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] SESSION loosing data when system has multiple users
Chris, Sorry, I should have included more info, but my message was already a bit long. I have run the tests on both Red Hat 7.3 and Red Hat 9 with the same result. I am using python 2.2.3. Here is the step-by-step for what I did (I'm going to err on the side of too much info here): - check out latest Zope from cvs - cd Zope - ./configure - make - make instance - cd lib/python/Products/Sessions/stresstests - edit stresstestMultiThread.py - comment out line 38 - changed readiters and writeiters fro 100 to 10 on lines 117 and 118 - cp ~/Zope/lib/python/Products/Transience/tests/fauxtime.py . - python2 stresstestMultiThread.py This time, on Red Hat 7.3, I actually got an exception. I'll include the output below. Please let me know if there is ANYTHING I can do to help out with this one. I appreciate you looking into it. Steve [EMAIL PROTECTED] stresstests]$ python2 stresstestMultiThread.py testNonOverlappingBrowserIds (__main__.TestMultiThread) ... 4 values in toc waiting for 8 threads read conflict 4 values in toc read conflict read conflict read conflict waiting for 8 threads read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict 4 values in toc 4 values in toc 4 values in toc 4 values in toc 4 values in toc 4 values in toc 4 values in toc 4 values in toc read conflict read conflict read conflict read conflict read conflict read conflict waiting for 8 threads read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict waiting for 8 threads read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict 0 read conflict read conflict read conflict read conflict read conflict waiting for 7 threads read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict read conflict 2003-10-17T14:41:56 25 Exception in thread Thread-3: Traceback (most recent call last): File //usr/lib/python2.2/threading.py, line 414, in __bootstrap self.run() File stresstestMultiThread.py, line 164, in run self.run1() File stresstestMultiThread.py, line 187, in run1 data = session_data_manager.getSessionData(create=1) File /home/stevej/Zope/lib/python/Products/Sessions/SessionDataManager.py, line 93, in getSessionData return self._getSessionDataObject(key) File /home/stevej/Zope/lib/python/Products/Sessions/SessionDataManager.py, line 180, in _getSessionDataObject ob = container.new_or_existing(key) File /home/stevej/Zope/lib/python/Products/Transience/Transience.py, line 175, in new_or_existing item = self.get(key, notfound) File /home/stevej/Zope/lib/python/Products/Transience/Transience.py, line 807, in get v = self._data[b].get(k, notfound) KeyError: 0 read conflict read conflict read conflict 2003-10-17T14:41:56 17 Exception in thread Thread-2: Traceback (most recent call last): File //usr/lib/python2.2/threading.py, line 414, in __bootstrap self.run() File stresstestMultiThread.py, line 164, in run self.run1() File stresstestMultiThread.py, line 187, in run1 data = session_data_manager.getSessionData(create=1) File /home/stevej/Zope/lib/python/Products/Sessions/SessionDataManager.py, line 93, in getSessionData return self._getSessionDataObject(key) File /home/stevej/Zope/lib/python/Products/Sessions/SessionDataManager.py, line 180, in _getSessionDataObject ob = container.new_or_existing(key) File /home/stevej/Zope/lib/python/Products/Transience/Transience.py, line 175, in new_or_existing item = self.get(key, notfound) File /home/stevej/Zope/lib/python/Products/Transience/Transience.py, line 807, in get v = self._data[b].get(k, notfound) File /home/stevej/Zope/lib/python/ZODB/Connection.py, line 561, in setstate p, serial = self._storage.load(oid, self._version) File /home/stevej/Zope/lib/python/tempstorage/TemporaryStorage.py, line 94, in load s=self._index[oid] KeyError: 2003-10-17T14:41:56 18 Exception in thread Thread-4: Traceback (most recent call last): File //usr/lib/python2.2/threading.py, line 414, in __bootstrap self.run() File stresstestMultiThread.py, line
Re: [Zope-dev] Re: [ZCM] [ZC] 869/ 5 Comment Broken transactionhandling in case of exceptions
I am not in line with your principle the error report is part of [the output of] the first transaction. The error report tells you what went wrong. You can only generate an accurate report if you see the objects in the error state. Zope is saying to your application: your transaction is doomed. tell me why. I'm interested in this for Zope 3. Currently in Zope 3, you can register a view to give a custom presentation of an error that reaches the publisher. The view can also do persistent work if it needs to. An example of this is recording against a User record that a login failed for that User. The view has access to the original request that ended in the error. The view is looked-up and rendered in a new transaction. The new transaction is committed if there were no errors raised, otherwise it is aborted. Do you think this error handling system is insufficient for your needs? Can you give an example of the kind of situation where you'd need access to objects in a doomed transaction in their doomed state, in order to make an error report? I'm interested in improving the error handling system in Zope 3, so your use-case will be very useful. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Create top-level folder
Matt Ficken wrote, to both [EMAIL PROTECTED] and [EMAIL PROTECTED]: Part of my product's job is to create a top-level folder. Currently, I can only get it to create the folder in what ever folder the product is added in. I would like to be able to get access to the root directory object but don't know how. How do I access the root directory object? Would 'getPhysicalRoot' do that? If yes, how do I use it? Matt, Please don't post a message to both [EMAIL PROTECTED] and [EMAIL PROTECTED] You'll see this at the bottom of each message on the [EMAIL PROTECTED] list: ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** The question you are asking should be asked on [EMAIL PROTECTED], not [EMAIL PROTECTED] Andreas was kind enough to answer, but please do try the [EMAIL PROTECTED] list first. The [EMAIL PROTECTED] list is for discussing the development of Zope and its internals, not for discussing how to use Zope and its API. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope3-dev] Re: [Zope-dev] How (in)secure is Zope?
So I think we can reliably say that stock Zope is secure. An insecure product, on the other hand, opens up many possibilities, but that ought to be the subject of a different discussion. ...and if we do have that discussion, can it please be on [EMAIL PROTECTED], and not cross-posted to both [EMAIL PROTECTED] and [EMAIL PROTECTED] Unless the discussion is about Zope 3 products, in which case it should be on only [EMAIL PROTECTED] -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] How (in)secure is Zope?
I suspect most people with checkin privelidges dont know about this problem, because it wont have been sent to the public mailman list. Perhaps an email can be sent out saying Issue number 1234. Temporarily restricted pending security review. http://url.to.get.it.if.you.are.logged.in Then, I'd be able to follow the link, authenticate, and read the issue. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope] Re: [Zope-dev] Proposed installation changes for review
But lo, still you won't be able to do something as mundane as limit the memory the FTP server is able to consume without affecting the HTTP server. You can do this with Zope. Just use ZEO and run one ZEO front-end for HTTP and one for FTP. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZODB: Are all handles closed?
Ulla Theiss wrote: Hello list, in our product (and additionally in an other process) we use separate ZODB-Storages. Opening and closing the ZODB several times the number of file-handles increases. You might want to post this to [EMAIL PROTECTED] instead of [EMAIL PROTECTED] Also, be sure to say what version of python and zodb you are using. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [Vote] PEP308 voting began
(Tested with div tal:replace=if:options/x then:string:yes else:string:no) There are an awful lot of colons in there :-) Here's an off-the-wall idea: div tal:replace=talif tal:if=options/x tal:true=string:yes tal:false=string:no This looks better as a tal:tag tal:block replace=talif if=options/x true=string:yes false=string:no Or, if you only use this kind of thing with tal:replace, tal:content and tal:define. tal:block defineif=foo options/x true=string:yes false=string:no Of course, none of this helps for tal:attributes. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZPublisher XMLRPC extension for user exceptions (II)
By that way, I could send my own fault code and fault descriptions via XML-RPC. But as you can see, I have to extend ZOPE code, and I don't want to do it, I have to work with standard releases of ZOPE. Do you think that something like that would be improved in an early future for next ZOPE releases? Any opinion will be really appreciated. This is easy to do in Zope 3. You just provide an XML-RPC view for your exception that returns the things you want. Different exceptions can have different views. The same exception can have a different view for plain browser-oriented HTTP, for FTP, and for XML-RPC. If the views part of the Zope 3 component architecture gets back-ported to Zope 2, then you'll be able to use this with Zope 2. Zope 3 has had only one alpha release, and is still undergoing a lot of change and further development. The mailing list for discussing it is [EMAIL PROTECTED] -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Following the Zope Collector
So I'd like to propose to switch the Zope collector to dispatcher Off. This would mean more email traffic for the supporters, but it's easy enough to filter and I think the benefits are worth it. I get my notifications by subscribing to this list: http://mail.zope.org/mailman/listinfo/zope-collector-monitor -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Security-Problem
Shane Hathaway [EMAIL PROTECTED] wrote: Do you not want foo to have the Manager role? Andre Schubert wrote: No, because he is no longer in our company. Shane Hathaway [EMAIL PROTECTED] wrote: I think you're asking for a find + chown utility, right? I don't know of one, but it sure would be nice to have. :-) Andre Schubert wrote: It would be very nice to have such a tool :) BTW: Thanks for the quick answers, you help me to understand the problem. I take the ownership of all objects where foo was the owner and the problems should go away :) Andre, Don't treat this so lightly! When you take ownership of objects where foo is the owner, you are telling Zope that you take responsibility for those objects. For example, let's say foo had written a python script for removing all of her files older than one day. Here's some pseudocode: For all files older than one day: try: remove the file except PermissionError: pass This will work, provided foo has rights to delete only foo's files. If you take ownership of such a script, and you run it, then it will very different effects. Also, if you are a Manager (or in another privaleged role), and you take ownership of such a script, you may be allowing others to delete their own files when they run that script, whereas before nothing much would have happened. In 99% of cases, none of this will be a problem. However, you should take care when taking ownership of objects, especially objects that represent code such as python scripts and dtml methods and page templates. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] property type
Tim McLaughlin wrote: According to docs and testing (in the interpreter) I can make a read-only calculated attribute using property() (I know that setters do not work w/ non-new-style classes). So I tried the following: class CMixin: def getter(self): return 'test' prop = property(getter) and when I try to mix in this object w/ a Folder object, the instance returns property object at 0x8b45edc for the 'prop' attribute. Is this an issue with pickling or something else? In Zope 2, the ExtensionClass that is the C base class used for Persistent classes, doesn't work with python 2.2 properties. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] property type
Steve Alexander wrote: Tim McLaughlin wrote: According to docs and testing (in the interpreter) I can make a read-only calculated attribute using property() (I know that setters do not work w/ non-new-style classes). So I tried the following: class CMixin: def getter(self): return 'test' prop = property(getter) and when I try to mix in this object w/ a Folder object, the instance returns property object at 0x8b45edc for the 'prop' attribute. Is this an issue with pickling or something else? In Zope 2, the ExtensionClass that is the C base class used for Persistent classes, doesn't work with python 2.2 properties. But, you can use a ComputedAttribute to get much the same effect. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] [Bug] Zope's transaction behaviour flawed
Chris McDonough wrote:
I am +1 on this. I suspect that before committing, though, we should
ask people who make use of Zope's transaction manager in advanced
ways like Phillip Eby.
As I noted in the Collector issue, I believe this change is a good idea
overall. As Chris suggests, we should take note of users of ZPatterns
and TransactionAgents (and other add-ons?), as these do things at
transaction boundaries such as clear computed fields. The error handlers
currently in use may expect these computed fields to be still available.
By conincidence I'm implementing something similar for error handling in
Zope 3 right now.
Here's the kind of thing I'm doing in zope 3, using the same notation
Dieter used. First, the simple case where the error handler will
definitely not need to alter any state:
## request starts
transaction.begin()
try:
object= REQUEST.traverse(...)
result = mapply(object,...)
transaction.commit()
except:
try:
try:
result = handle_error()
except:
result = default_handle_error()
# Zope's default error handling
# it must not have side effects
finally:
transaction.abort()
request.response.setBody(result)
## request ends
If there's an exception handler that has side-effects, it must
explicitly say so, and we get this:
## request starts
transaction.begin()
try:
object= REQUEST.traverse(...)
result = mapply(object,...)
transaction.commit()
except:
try:
try:
# this call returns a special
# 'I have side-effects' token.
result = handle_error()
except:
result = default_handle_error()
# Zope's default error handling
# it should not have side effects
finally:
transaction.abort()
if result is I_HAVE_SIDE_EFFECTS:
transaction.begin()
transaction.note('%s (application error handling)'
% '/'.join(object.getPhysicalPath))
try:
result = handle_error_with_sideeffects()
transaction.commit()
except:
try:
result = default_handle_error()
# Zope's default error handling
# it should not have side effects
finally:
transaction.abort()
else:
request.response.setBody(result)
## request ends
--
Steve Alexander
___
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Re: [Zope-dev] [Bug] Zope's transaction behaviour flawed
Chris McDonough wrote: I am +1 on this. I suspect that before committing, though, we should ask people who make use of Zope's transaction manager in advanced ways like Phillip Eby. I've spoken to Phillip Eby, and he sees no problem with the approaches we've discussed. So, +1 from me. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] 2.6.1b2?
Here's the status - an engagement that we're doing has been bringing up some issues regarding ZODB and ZEO in large-scale environments. I think that the fixes are useful enough that they should be in 2.6.1, but getting them finalized has taken longer than I expected. I'd love to know what kind of thing 'large-scale' implies here, and what kind of problems the fixes fixed. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [Zope-Checkins] CVS: Zope/lib/python/TAL -TALInterpreter.py:1.69.6.10
The problem occurs where you want include the value of a variable inside an
attribute.
For example:
input type=string tal:attributes=value someValue
By default Page Templates replaces the escaped value in the form, unless
structure is specified. If someValue contained a (eg: test with a
quote) then you would get the following invalid html (this is what you
currently get):
input type=string value=test with a quote
This of course should be (and what the patch changes it to):
input type=string value=test with a quot; quote
If you do not escape double quotes in the Page Template html quoting
function, you will never be able to easily use Page Templates unless you are
sure that someValue does not have double quotes escaped. This would mean
having to import an escaping function into your page templates or adding an
extra layer of python involved for almost every use of a variable.
I think page templates should escape quotes in tal:attributes, but not
under other circumstances.
Also, I believe that an alternative in the example you give would be to
use single quotes. This is consistent with how quoteattr works:
from xml.sax.saxutils import quoteattr
print quoteattr('foo bar')
'foo bar'
print quoteattr(foo' bar)
foo' bar
print quoteattr(foo' bar)
foo'quot; bar
quoteattr only resorts to using quot; when there is no alternative --
that is, when the string being quoted contains both a single quote and a
double quote.
So, perhaps an alternative fix would be to revert the current fix, and
instead make tal:attributes use quoteattr.
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Re: [Zope-dev] Re: [Zope-Checkins] CVS: Zope/lib/python/TAL - TALInterpreter.py:1.69.6.10
Andy McKay wrote: Collector number 735: http://collector.zope.org/Zope/735 This was prompted by some bugs people found with Plone. For a two character fix that to me looked like a simple oversight I didn't bother with a unit test. I'm not going to comment on whether or not page templates should work this way. There good reasons to write a unit test in just this kind of situation: It is only a two character fix. So, someone else might come along later, and think that those two characters shouldn't be there -- just as you think those two characters should be there. They could remove those characters, and no tests would fail. Also, in a refactoring, this behaviour couild be easily lost if there is no unit test to demonstrate correct behaviour. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] PyCon DC 2003: Extension of Submission Deadline
The deadline for submissions to PyCon DC 2003 appears to have been too tight for many authors. While some promised submissions have arrived, several have not even though the original deadline of 15 December has passed. Rather than exclude promising papers the organizing committee has decided to extend the deadline for submissions. Accordingly, the new schedule for proposals is as follows: Submission Deadline: January 15, 2003 Notification of Acceptance: January 31, 2003 Final Versions Due: March 10, 2003 Conference Dates: March 26-28, 2003 [unchanged] Authors who have already submitted abstracts are invited to resubmit if they feel that the original deadline had an adverse effect on the quality of their submissions. Please make any appropriate media, mailing lists and newsgroups aware of this announcement. Enquiries should be sent in the first instance to [EMAIL PROTECTED] Information about PyCon DC 2003 is available at the following URLs: www.python.org/pycon www.python.org/cgi-bin/moinmoin/PyCon The latter URL, a Wiki page, can also be used to communicate with the conference organizers. This is *your* conference: tell us what *you* want to see in it. regards --- Steve Holden http://www.holdenweb.com/ Python Web Programming http://pydish.holdenweb.com/pwp/ Bring your musical instrument to PyCon!http://www.python.org/pycon/ --- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] BUG: ValueError while changing height of the templateedit window
Guido van Rossum wrote:
Can we get the same patch without the generic except:, please?
snipped part about whether there could be database corruption
int() happens to raise a bunch of different exceptions, and I think
an unqualified except: clause is okay here (though it needs a
comment).
I think this would be a useful note for the Zope3 style guide.
What exceptions can int() raise?
On converting a preexisting value to an int:
ValueError, OverflowError, TypeError, AttributeError
(Any others?)
On converting an instance that implements __int__:
Anything at all.
It can even return a non-int value.
On evaluating the expression inside the int() brackets:
Anything at all.
I would suggest that only the four exceptions I listed first are worth
catching. The other cases are programming errors.
Of those four exceptions, in this situation, I think you only need to
catch ValueError. The other cases are application logic errors that I
think it is counterproductive to catch. If you get one, there is a bug
in some code, or some template, that should be fixed.
Here's how I produced the errors listed in the first category:
int('xxx')
Traceback (most recent call last):
File stdin, line 1, in ?
ValueError: invalid literal for int(): xxx
import sys
int(sys.maxint+1)
Traceback (most recent call last):
File stdin, line 1, in ?
OverflowError: long int too large to convert to int
int(int)
Traceback (most recent call last):
File stdin, line 1, in ?
TypeError: int() argument must be a string or a number
int(AttributeError())
Traceback (most recent call last):
File stdin, line 1, in ?
AttributeError: AttributeError instance has no attribute '__int__'
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Re: [Zope-dev] BUG: ValueError while changing height of the templateedit window
Anything can raise MemoryError. Ok. But I don't think regular application code should catch these. On converting an 8bit string to an int: ValueError *only* Ok. On converting a Unicode string to an int: ValueError UnicodeError (or UnicodeEncodeError, which is a subclass of it) Can you provide an example of raising a unicode error like this: u = makeUnicodeString() # your choice of function int(u) My point is that once you have a valid unicode object, I don't see how calling int(valid_unicode_object) will raise a UnicodeError. If this is so, then the style should be: value = expression_to_compute_value try: i = int(value) except ValueError: # take corrective action rather than: try: i = int(expression_to_compute_value) except: # Note: calling 'int()' can raise just about anything # take corrective action -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] BUG: ValueError while changing height of the templateedit window
I spoke too soon. UnicodeEncodeError is a subclass of ValueError. So catching ValueError from int(str_or_unicode) is the way to go. Who's writing that Zope 3 style guide again? Great. http://dev.zope.org/Wikis/DevSite/Projects/ComponentArchitecture/ZopePythonStyleGuide -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] KeywordIndex and PersistentList (Bug?)
Jeremy Hylton wrote: JPS == Jeffrey P Shell writes: JPS What about ``if callable(aq_base(newKeywords)):`` to remove JPS potential acquisition wrappers? callable() returns True for any instance. Any instance of what? [steve@localhost]$ python2.2 Python 2.2.2 (#1, Oct 31 2002, 10:45:23) [GCC 2.96 2731 (Red Hat Linux 7.2 2.96-108.7.2)] on linux2 Type help, copyright, credits or license for more information. callable(object()) 0 class Foo: ... pass ... callable(Foo()) 0 -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Dynamically altering Product methods
* It is my understanding (after long analysis of the source) that what I'm doing with self._security is okay. I mean, it seems to me I should be able to redeclare my permission settings at run-time. Is this correct, or am I missing something? Acquisition is still rough to me. This has little to do with acquisition. I have no idea what declareStaticPermissions(self._security) does. ClassSecurityInfo applies to classes. You're trying to apply it to an object -- the 'self' argument of your method. I would not expect this to work properly. If it works at all, I'd expect it to re-apply security directives to the class (that is, to all of your objects), not the one object you want to apply this to. When do you need this web services stuff to work? All of this is very much easier in Zope 3. You can customise the permissions for individual objects, and create persistent classes. Of course, Zope 3 isn't ready for general use yet... -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] KeywordIndex and PersistentList (Bug?)
Thomas Guettler wrote: Hi! In KeywordIndex the newKeywords get called if they are callable: def _get_object_keywords(self,obj): newKeywords = getattr(obj, self.id, ()) if callable(newKeywords): # (*) newKeywords = newKeywords() if hasattr(newKeywords,'capitalize'): # is it string-like ? newKeywords = (newKeywords, ) return newKeywords This fails if the newKeywords are stored in a PersistentList. Callable is true, but there is no __call__ attribute. I changed the line marked with (*) to if hasattr(newKeyword, __call__): and this seems to work I think this does not break anything and could be included in the original. Am I the first how uses PersistentList for an indexed attribute? Is there a reason not to do so? The KeywordIndex should be changed to check for the __call__ attribute, rather than relying on 'callable'. You cannot reliably use 'callable' when you're also using acquisition wrappers. See my comment to this Collector report. http://collector.zope.org/Zope/578 I suggest you report the bug you have found in the Collector. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Production System Specs
Brian R Brinegar wrote: Hello, Can anyone point me at some recommended setups for a ZEO cluster. I would like some or all of the following information: * Hardware Specs * Load Balancing * Caching Information (Apache / Squid Caches) Any information would be very helpful. http://www.zope.org/About -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Securing login with SSL via RESPONSE?
Assume I make a hypothetical SSLRedirect product, modelled on CookieCrumbler. There is no reasonable way to keep them in the same folder and make sure that SSLRedirect gets to the REQUEST/RESPONSE before CookieCrumbler, correct? I.e. such SSLRedirect product would have to be in a subfolder relative to CookieCrumbler so that it gets traversed first. If you need both CookieCrumbler and this new behaviour, you could derive your product from CookieCrumbler. This would ensure that things happen in the correct order. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [ZODB-Dev] Re: [Zope-dev] Contents of Initial Data.fs in ZopeDistribution?
Casey Duncan wrote: It is only there due to lack of time to take it out. We had planned to take it out for 2.6, but time was never made to replace it with code to bootstrap an empty storage with the proper root level elements still residing in Data.fs.in. IIRC, the proper root level elements are now created in code. However, various unit tests of zope and 3rd party products rely on having a Data.fs.in. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] bug in mapply.py?
I must admit to not understanding why this should only break over xmlrpc and not directly from Zope. The problem appears to be that my method is defined something like: def method(self, *args, **kw) mapply doesn't put things into **kw arguments of methods. I wanted this once for a product in Zope 3, looked deeply into mapply, and talked to Jim Fulton about it. IIRC, Jim said that mapply shouldn't put things into **kw arguments because it isn't at all explicit, and would end up implicitly putting in a whole bunch of things that you generally wouldn't want in a lot of cases. Can you make up a simple python module to demonstrate your case, just using a method, and mapply? It may be that there's a way to achieve what you want, while still keeping things reasonably explicit. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] How to override __getattr__ and not break acquisition
I perhaps should have clarified that I need to be able to specify the name of the attributes or methods at run time, so ComputedAttribute unfortunately won't do the trick as you have to define each attribute/method you require in the class definition. ie. I need something like : def __getattr__(self,attr): if name in self.methodlist: do something return Implicit.__class__.__getattr__(self,attr) where self.methodlist is a list of strings that may change per instance and/or at runtime, or itself could be calculated at the time of doing the __getattr__ (eg self.getMethodList()). Sounds like you could use ZPatterns. If you do implement your own __getattr__, you might need to check if the object you want to return implements __of__, and return object.__of__(self) (or something like that). -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] How can I find out who visited a URL within my ZopeProduct?
If we send an email to a counterparty to a legal contract with a URL to the contract, we know that they saw the contract by observing a VisitURL Command with their user ID and the URL of the contract. That means they read the email and clicked on the URL we sent (or navigated to it through some other means). Correct. My application can then automatically send notifications to others based on the execution of the VisitURL Command. I can send email to my group saying So and so has seen the contract Incorrect. In this particular case, we are writing an invoicing application, so the moment the client sees the invoice this way, the Net-30 clock starts ticking This shows that they read the original email, and intended to view the contract at the URL. However, after that point, we only know that Zope attempted to send the page at the URL back to the browser. You have no proof that such data was ever received by the browser in any way meaningful to the end-user. This gets even more complicated when http proxies are involved. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Plone/Metadata/FUD
My only response is why wasn't Many of the components and frameworks currently supplied by the CMF included in the core Zope in the first place? Everybody has the right to work on their own thing sure. We would already have a highly extensible Zope3 by now if the time wasn't spent trying to create something else that should have been in the core of Zope in the first place. If only people could write the ideal software first time! From my point of view as a Zope 3 contributor, I'm extremely glad that the patterns, use-cases and learning experiences were developed in the CMF, outside of the core of Zope. If what is going into Zope 3 had been worked into the core of Zope 2 instead of being tried out in the CMF, the speed of development would have been an order of magnitude slower, and there would have been a much greater risk of increasing the number of deprecated APIs in the Zope 2 core. So, bravo to the CMF developers and contributors. Not only do we have a useful and innovative framework today, we have the blueprints for a better Zope tomorrow. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] form variables and **kw
If so, why? I see that Toby and you answered that. Is this a python limitation? No. I played around with co_varnames and python doesn't seem to offer a possibility to recognize **kw as something special. def foo(bar, **kw): ... pass ... foo.func_code.co_flags 11 def foo(bar, *args): ... pass ... foo.func_code.co_flags 7 def foo(bar): ... pass ... foo.func_code.co_flags 3 -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Site-crawler (find unused objects)
[EMAIL PROTECTED] wrote: Hi, has anyone written a script which crawls a site and lists all objects which aren't referenced anymore? Crawling a site means going from a root object, and following all of its references, recursively. Any objects you find through this process are, by virtue of the fact they have been found by that process, referenced. Your requirement is self-contradictory. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] find unused objects: hopefully the last misunderstanding...:o)
[EMAIL PROTECTED] wrote: * I have lots of scripts, dtml methods etc. everywhere which are * perfectly well-known to the ZODB, nothing wrong with that, but which * are simply not used by me anymore. No usage from other scripts nor * methods nor documents. And these buggers I'd like to find. * There is no easy way to find such things. * Especially given acquisition, and the dynamic nature of Zope. Finally we got it :o) Ok, the reason for me posting this question was the difficult nature. So I take your answer as a 'no' to my original question if anyone has already written such a script. Maybe this would be a good thing to accompany future Zope versions. There could be a tab which shows all objects which are called explicitely by the actual one in a sortable list. By the way: is this the correct mailing list for such suggestions? If not, which one is it? You forgot to post my suggestions: You can use Zope Find to get a list of them, and then manually audit them. You could instrument such methods to output logging, and check the logs every so often to see what is typically being used. You could use Zope Find to see if the name of particular methods is used within other methods. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Proxy Object / __getattr__ / Acquisition
[EMAIL PROTECTED] wrote: I am trying to implement a proxy class (specifically for the purposes of multi-versioned document objects (folderish proxies that contain the object that they proxy to). I am using __getattr__ within my product, and the code pasted below works, and does not break Implicit acquisition (because the object that _CurrentVersion points to is subclassed from SimpleItem, which implements Implicit Acquisition). However, because of the way that this messes with Acquisition, certain things like accessing the ZMI pages or acquired methods can be quite slow (but work). I suspect that this is because an instance of this class actually acquires items through the item it proxies to, which conveniently is contained inside it, which makes acquisition work for the instance of this class (albeit magnitudes slower). I would really like to make this perform better and act properly, but I'm at a loss as to the right way to do this. Thoughts? Sean class MVProxy(Folder): Object acting as proxy to multiple document implementations serving for each version of this document; this is a proxy object class Subclasses OFS.Folder.Folder def __init__(self, id, title=''): self.id = id self.title = title timestamp = str(int(time.mktime(time.localtime( currentId = id+'_'+timestamp current = DocumentCoreImpl(currentId, title) self._setObject(currentId, current) self._CurrentVersion = current def __getattr__(self, name): return getattr(self._CurrentVersion, name) Can you use __bobo_traverse__ instead of __getattr__ ? That should make things much faster. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Browser Stop Button and Zope REQUESTs
Oliver Bleutgen wrote: Mod_perl also seems _not_ to stop a long running script if this script doesn't try to write to the RESPONSE (or whatever they call it). The perl test script I posted does write output, and this causes it to stop. If I try a script with no output, it never gets stopped. Java servlets also seem only to get stopped automatically if they try to write into the RESPONSE stream of a closed connection. Buffering aside, if you try to output something in a servlet and the connection is closed, you get an exception. Im my uninformed opinion, Zope should do the same. Is this possible? Although Zope has a response stream method of sending information back to the client, most things in Zope don't use it. Instead, the response information is aggregated, converted into a string, and then sent back all at once at the sucessful completion of the transaction. These other systems you mention are using the availability of a response stream as a surrogate for RESPONSE.isClientConnected(). I'd rather have an explicit RESPONSE.isClientConnected(). Although, it would make sense to raise an exception if someone tried to write to the Zope response stream, in the rare cases when this does happen. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] bad bare except in PageTemplateFile.py
Shane Hathaway wrote: os.stat() raises OSError if the file is not found, in which case mtime should be set to 0. Surely if the file is not found, that's an error because the PageTemplateFile is pointing at a source file that doesn't exist. I cannot think of any reason I'd want not to be informed that the source file for a PageTemplateFile isn't there. That's clearly a programming error. So, I suggest removing the try: except: clause entirely, and letting os.stat() raise its error. Or, am I missing something here? -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] bad bare except in PageTemplateFile.py
Shane Hathaway wrote: I vaguely recall having a similar discussion with someone regarding DTMLFile, and we decided it had to ignore missing files, but I don't remember why. Darn... that'll be just the reason I'm looking for! Also, the open() call just below that line will raise an equivalent exception. For some reason, the code was not getting there when I came across this problem. I guess this 'if' expression must have evaluated true. if hasattr(self, '_v_program') and mtime == self._v_last_read: return I'm not sure why it would have done so though. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Last-modified and bobobase_modification_time
Wei He wrote: On Tue, 18 Jun 2002, Oliver Bleutgen wrote: Would please go a little bit deeper giving an example what information HEAD requests don't pass to the server, although it's beyond this topic. HEAD requests are required to have no side effects. On the other hand they are required to return the same response as GET requests without the BODY. So GET returning another last-modified header than HEAD would be in violation of the RFC. This gets worse by the fact that HEAD can be used for caching purposes. Totally understood. But the question is what RFC says about the last-modified header. Shouldn't it reflect the latest update? Zope is facing this problem because it handles the HEAD request seperately. Am I right? I don't see any need to seperately handle the HEAD request. My hacking of the last-modified header is done execpt that HEAD and wget -S returns different headers. I think the last step is to change the HEAD handling routine to the get information from GET. Does anyone have any idea? If you *really* want to, you can run a HEAD just like a GET, but after getting your last-modified and other details, abort the transaction to undo side-effects, then return the HEAD response. I would generally recommend against this, as it may end up being rather expensive. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Crash Burn with Zope 2.6.0a1 and ZEO 2.0a1
Andrew Sydelko wrote: The errors in the log are all about failures to import specific modules. (Let me know if I missed something else.) Failed to import class Splitter from module Products.PluginIndexes.TextIndex.Splitter.ZopeSplitter When I import Products...ZopeSplitter, I see a module with a Splitter attribute bound to a function. I don't understand what you're saying here. Do you mean it works without complaining for you? In the past I have deleted all the Products that were in the Products Control Panel to fix a similar bug. Is that the case here as well? I explained in the Collector how to fix this problem back in March. http://collector.zope.org/Zope/181 -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Last-modified and bobobase_modification_time
Casey Duncan wrote:
BTW: This list if for development *of* Zope, the [EMAIL PROTECTED] list is
better for questions bout developing *with* Zope.
On to your question:
There is no automatic way in which DTML can do this for you. This is
simply because dtml-var foo doesn't tell Zope what foo is. Is it a
document or a script that returns something different every time it is
called or something else? In fact foo might different things at
different times, if you aquire the template into different contexts.
Anyhow, if you really want to set a Last-Modified header that reflects
the latest of a group of documents, you can write a python script that
accepts either a list of names or objects to test. For the latter here's
a Py script named setLastModTime with a single argument, *objects:
last_mod = objects[0].bobobase_modification_time()
for ob in objects[1:]:
last_mod = max(last_mod, ob.bobobase_modification_time())
context.REQUEST.RESPONSE.setHeader('Last-Modified', last_mod.rfc822())
return last_mod # for debugging purposes
Then from dtml:
dtml-call expr=setLastModTime(this(), fooMethod, barDocument, ...)
A similar approach would be for each page fragment to set the
Last-Modified head if either there is no header set, or its own
last-modified time is later than one that is set.
--
Steve Alexander
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Re: [Zope-dev] Problem testing CatalogAware class
Vincenzo Di Somma wrote: Hi all, does someone knows about problems testing CatalogAware subclasses ? I have unit tests for my class and work well, but if I subclass also from CatalogAware I receive: Don't use CatalogAware, use CatalogPathAware. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] How to override __getattr__ and not break acquisition
Erik A. Dahl wrote: Ok I need to override __getattr__ in one of my product classes. I'm sure this is killing acquisition yes but not sure about the persistence stuff (I think this is working). it will still work Is there a way to make this work? yes Here is what I'm doing: def __getattr__(self, name): if name == 'myattr': return self.myattr() if your return value knows about acquisition, you need to it by calling __of__: def __getattr__(self, name): if name == 'myattr': return self.myattr().__of__(self) I assume that somewhere in the Acquisition code there is a __getattr__ but I can't find it. it is implemented in C. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Zope 3 Installation
Eddie Moench wrote: Can someone tell me, how to get the Zope 3 (from the CVS) up and running? After correcting the verify-import (there was a case-problem), I get the error message cannot import name Interface by the command from Interface import Interface - which is called by many scripts. Does anyone had the same problem and knows a solution? Please describe exactly the steps you took, starting with the command you used to check out Zope 3 from CVS. If you want in-person advice, there are people on the #zope irc channel who have successfully installed Zope 3 from CVS. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: Zope logic
Tim Hoffman wrote: However the most problems I have had, are with poorly thought out or poorly documented object hierarchies, You mean class hierarchies. so that it is not obvious or clear where and when you should override methods, try manage_afterClone some time, and I know this isn't an acquisition problem, or overriding some of the default behaviour for FTP methods. The lack of documented approach is far worse than the enforced acquisition, IMHO ;-) You'll like Zope3 then. There is no dependency on class hierarchies. The inheritance hierarchies throughout are either very shallow or non-existent. However, none of the power of expressing the affordances of objects is lost. Instead, this is expressed through the interfaces an object implements, which can be definied either in your class definitions, or elsewhere in zcml or in other classes/interfaces. If how these things work and how to use them, was well documented, then strangeness with acquisition wouldn't be so strange, ie it would be documented and you could get your head around it. There is only so much complexity that I can handle at a time. Often working on what should be an isolated part of Zope2 exceeds that threshold. (I think we will be in a much better position with Zope 3) :-) -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Zope logic
Toby Dickenson wrote: My conclusions are: a. implicit acquisition is dangerous b. acquisition that searches outside the containment hierarchy is evil. Im not keeping up with Zope 3 development. how does Zope 3 handle acquisition? There is no implicit acquisition in Zope 3. If there ever is, it will only be there as part of a Zope 2 compatibility library. Generally if you want something to be acquired by content that lies below it, you make that something a a View, a Resource, or a Utility, or a Service, or some other such thing. There is also an acquire namespace for paths and URLs. I haven't had cause to use that though. You make a choice as to what you want as Content and what you want as behind-the-scenes plumbing. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] stacks != easy to explain
Adrian Hungate wrote: Whereas XML attributes, order indeterminisim, Chris Withers wrote: ...Solved by making it absolutely clear what order stuff executes in. If I was training people, I'd tell them to write it in that order too... Don Hopkins wrote: You can't make the order of XML attribute execution clear, because they are defined as unordered. If you're using ordered attributes, then you're not using XML. Indeed, and if your indentation is meaningful in your C source-code, you're not using C. However, that doesn't negate the benefit of a consistent coding style. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [ZPT] Order of attribute execution Feature Request
Tim Hoffman wrote: In addition event handlers in html ie onClick onBlur etc are all order independant. now adding tal: attributes that where order dependant would seem to fly in the face of that convention. (Admittedely there are probably no strange dependancies that could be introduced with different orders of border, src etc) Indeed. It isn't just a convention. The order of attributes within an XML or SGML tag is explicitly defined not to matter. Two important properties of attributes within a tag are that they are unordered, and they are unique. http://aspn.activestate.com/ASPN/Mail/Message/xml-dev/666339 -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Can I get rid of standard_template.pt?
Lennart Regebro wrote: I'm not using it, and will never use it, so why does Zope 2.5.1 always create one for me? Grrr. Highly annoying. :-[ From Zope 2.1.3 (when I started Zopeing), I could write a Python Product that expected standard_html_header and standard_html_footer to exist. From Zope 2.5.1, I can write a Python Product that expects standard_template.pt to exist. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Don't try to improve or reinvent XML. Stick withthe standard.
Don Hopkins wrote: From: Marc Lindahl [EMAIL PROTECTED] You would need something to close off the 'if' statement, otherwise, a document full of 'if' statements and no 'else' ones could fill up a stack needlessly. What's so bad about that? The stack wouldn't carry over after html/html or body/body - couldn't practically more than 1000's - insignificant! If you're not going to use correct XML syntax, which REQUIRES balanced tags, then you shouldn't use a syntax that looks like XML but isn't. I don't think that's what was originally suggested. I think what was originally suggested is that an 'if' *element* would leave something on the interpreter's stack, for use by an 'else' element later. So, the document remains well-formed, but there is a coupling between non-contained elements. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [Zope] [PATCH] to Zope's Management Interface
Jerome Alet wrote: Perhaps you could tell me if I have to use the App.Hotfixes interface or not when doing such a not-Hotfix thing. You should certainly not use the App.Hotfixes interface for this. The App.Hotfixes interface is for registering dynamic patches that will become part of Zope in a future release, at which point the dynamic patch can be removed. While you are dynamically extending Zope, I don't think there are any plans to incorporate this into the core Zope distribution. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [Zope] [PATCH] to Zope's Management Interface
Jerome Alet wrote: On Mon, 29 Apr 2002, Steve Alexander wrote: You should certainly not use the App.Hotfixes interface for this. The App.Hotfixes interface is for registering dynamic patches that will become part of Zope in a future release, at which point the dynamic patch can be removed. ok, so if I understand correctly all I have to do to make a not-hotfix product is just do an unconditionnal assignment of my new complete main.dtml file to ObjectManager.ObjectManager.manage_main in my product's __init__.py file ? am I right ? I'm not sure whether that will be sufficient. If the ObjectManager class has already been initialized, then its security declarations will have been applied to the preexisting main DTMLFile object. In which case, you'll have to re-initialise the class, or process your own security declarations, or something like that. Then again, it might just work. Try it and see. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [Zope] [PATCH] to Zope's Management Interface
Hannu Krosing wrote: As always any comment is very welcome. Have you thougth of making this a Hotfix instead of patch ? Please don't call this a hotfix. That term is reserved for products that fix important bugs (especially security bugs) in Zope. A product can dynamically patch things, using the same mechanism as a Hotfix. However, use of this mechanism does not qualify a product as a Hotfix. The terms monkeypatch and dynamic patch have been used to describe this mechanism. Please use one of these in preference to Hotfix. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
RE: [Zope-dev] RE: [Zope] [PATCH] to Zope's Management Interface
It's most likely IE 'helping' out and ungzipping on the fly. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Jerome Alet Sent: Monday, April 29, 2002 8:18 AM To: Roel Van den Bergh Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: [Zope-dev] RE: [Zope] [PATCH] to Zope's Management Interface On Mon, 29 Apr 2002, Roel Van den Bergh wrote: The download file at http://www.librelogiciel.com/software/ZShell/tarballs/zshell-1.42.tar.gz cannot be opened on W2K with Winzip 8.0 (tested on several different machines) could you download it again ? I've tested here (no windows, sorry) and it's ok, file size is 46686 bytes and md5sum is : 6efb9c10e532d534fb843354ac28c5bb maybe it was corrupted during the download phase. hth. Jerome Alet ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] zope/python question
Dirk Datzert wrote: Hi, I saw in some products a __of__ operator and looked at the python.org for a documentation. I didn't found one. Can anybody tell me what the __of__ does ? It creates an acquisition wrapper for the object the method belongs to, in the context of the object you pass as the argument. It is part of the Extension Class package. Or tell me a URL for the documentation of the __of__ operator ? http://cvs.zope.org/~checkout~/Zope/lib/Components/ExtensionClass/doc/Acquisition.stx?rev=HEAD http://cvs.zope.org/~checkout~/Zope/lib/Components/ExtensionClass/doc/ExtensionClass.stx?rev=HEAD -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
RE: [Zope-dev] PHP vs Zope cost benefit
Plus the over head of running Zope instances is greater than PHP scripts. Is this really ture for anything non-trivial? ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] _v_ and ZEO
Florent Guillaume wrote: Or am I misunderstanding something ? My question really relates to any use of _v_ as a cache that can survive on publisher transaction, really. Should _v_ never be used like that ? There's a case to be made for attributes that not persisted (like _v_ attributes) and are cleared at transaction boundaries. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] how bad are per-request-write-transactions
Jeremy Hylton wrote: CM == Chris McDonough [EMAIL PROTECTED] writes: Completely agreed. My disagreement is portraying the counter problem as impossible with the zodb. I think some people, as evidenced by some of the responses, are willing to live with the tradeoffs. Other people will find managing a log file on disk to be a more manageable solution. CM It would be best to make make a dual-mode undoing and nonundoing CM storage on a per-object basis. I'd really like to do this for ZODB4, but it seems hard to get it into FileStorage, without adding automatic incremental packing to FileStorage. This might be possible without incremental packing, if the object will be of a fixed size. I'm thinking of a simple counter here, something like: class Counter(object): __slots__ = ['__count'] def __init__(self): self.__count = 0 def increment(self): self.__count += 1 def getValue(self): return self.__count Now, imagine that Counter was somehow Persistent too. (There would need to be a few more _p_... declarations in __slots__, and possibly some changes in the persistence machinery to allow for slots based instances as well as __dict__ based ones.) I would naively expect a pickle of Counter instance to always remain the same size. Therefore, it could be updated in-place. Of course, this would break various other nice behaviours of FileStorage. Another variation on the same theme: have a fixed-size external reference instead of the object's pickle. The fixed-size reference points to a separate some_object.pickle file which contains the pickle for that one object. The some_object.pickle file gets overwritten on each update. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Future of ZPatterns
Hi Marcello, Wow.. sounds like a neat book. ;-) Seriously, Phil Eby has suggested that there will be some sort of migration helpers to move from ZPatterns to TransWarp (www.eby-sarna.com): http://www.eby-sarna.com/mailman/listinfo/transwarp http://cvs.eby-sarna.com/TransWarp/ Also.. Zope3 will have a some kind of Zope2 compatability layer, so in principal, it should be possible to move ZPatterns apps to Zope2 using the compatability layer. I, for one, have a slew of ZPatterns apps out there, so I will be motivated to do something about migration. -steve On Monday, April 15, 2002, at 02:11 PM, Marcello Parra Martins wrote: Hello, I'm new to Zope. I'm studing 'Zope Web Application Develepment and Content Management' book. Many of the examples of the book uses ZPatterns. I saw in past messages that ZPatterns will not be supported in Zope3. Is this true ?? If I create a product based on it, will it be a lost of time ??? Thanks, Marcello Parra ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Separate staging and development areas for a product
I think it's worth having a completely separate Zope. Otherwise there's no way to separate development and staging versions of filesystem based products. You might be interested in ZSyncer, or ZCVSFolder for synchronization. -steve On Monday, April 15, 2002, at 12:12 PM, Ted Skolnick wrote: Hi, I have a Zope product in development. I want to setup a staging area for stable releases and I am not sure how to go about it. I could install another Zope in a different directory, but it seems like I should be able to do it with the Zope instance I've got. Any thoughts, or pointers? My project contains ZSQL methods and external methods, if that is significant. It seems like the external methods could be a rub, since they exist as files in the Zope installation directories (specifically in the Extensions directory). I don't know how I could have multiple versions of these files, one for development, one for staging all within one instance of Zope. One lesser question, newbie question... how do I control the URL to reach the methods exposed in my project. For example, I have a product called myproj, with my method. The only URL I can get to work is this http://myserver/Control_Panel/Products/myproj/mymethod I'd like to have a URL that looks like this... http://myserver/myproj/mymethod without the Control_Panel bit. thanks, Ted ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: [Zope] range:min bug in ZCatalogs fo Zope 2.3.2
Andreas Jung wrote: Cool... I would not have expected this to work :-) IIRC, the range fix was one of the last maintenance tasks on the old Components/BTree package before it was deprecated in favour of the new Zope/BTrees implementation. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] manage frame change
Lennart Regebro wrote: From: Anthony Baxter [EMAIL PROTECTED] What does machine mean? The host running the ZEO server? The host running the ZEO client? What about those of us who run multiple ZEO clients on the same machine (multi-cpu, test instances, whatever)... I think it should show the site name, ie, www.torped.se:1006, or intranet.torped.se:8080, and so on. That would make me know where I was editing all the tim (except when I have SiteRoots. I loathe the littl buggers. Grrr). :-) It is a great idea, seb. How about making machine configurable per zope / zeo client instance via an environment variable. So, I can read something meaningful to me, and I won't have to remember exactly which servers I have running on which ports. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Replaceable types?
Ivo van der Wijk wrote: Secondly, can someone give me an example of a Replaceable object? Any object that doesn't represent a service-kind-of-thing. The term replaceable is used in the context of acquisition. Making things non-replaceable is a way of providing a particular service (say, a MailHost), and ensuring that this service will not be inadvertantly shadowed by something else (a DMTL Method perhaps) in a higher-up folder. The concept of replaceable isn't needed in Zope 3, as services are kept separate from content. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Manual object-to-relational persistency framework
Thanks Dieter, I think ZPatterns is certainly worth a look. It allows you to slice-and-dice what you want to store in ZODB or RDBMS. The best part is you can develop totally in ZODB, then migrate to RDB a bit at a time (if you like) without changing your app, or your data classes. We have multiple instance of the same app mixing up ZODB, RDB, LDAP etc.. since all the wiring of data-objects is done in configurable data managers on an instance by instance basis. http://www.zope.org/Members/pje/ZPatterns for Zope-2.[45].x see also: http://www.cat-box.net/steve/TransactionAgents Three chapters of our book (www.zopeonarope.com) are devoted to implementing ZPatterns based apps. good luck! -steve On Friday, March 8, 2002, at 02:56 PM, Dieter Maurer wrote: Bjorn Stabell writes: I'm trying to use Zope without storing everything in ZODB while still having the perception of an object-oriented database. I want to control the object-to-relational mapping layer, but would like the loading and saving of objects to be automatic. Is there some way to do that using Zope? Maybe ZPattern? Dieter ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Zope 2.6 planning - call for contributors!
seb bacon wrote: I think the use cases driving synchronisation requirements are not yet sufficiently understood. Agreed, it's a feature that many people need, but I get the impression it would be premature to include ZSyncer as is in Zope without more detailed planning. On the other hand, there is an argument which says, ZSyncer is a good product used by a lot of people, let's put it in Zope and deal with any issues after the event. Yeah... maybe we need a standard Zope Expansion Kit that is a cohesive package of products that aren't in the Zope core, but are officially sanctioned and versioned and released alongside versions of Zope. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Re: Zope vs. Cocoon
Max M wrote: seb bacon wrote: Architecturally, it is *excellent*, and I'm very excited about it. I could wax on for hours, but I won't right now. I only wish somebody would ... It is hard to figure it out fully by reading only the online documentation. Do the tutorial: http://cvs.zope.org/Docs/Docs.tar.gz?tarball=1 -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Defining Interfaces
Adrian Hungate wrote: This is based on the new Python 2.2 stuff, isn't it? I would guess the answer would be You exclude the 'self' first arg in a class method. Not really. You exclude the self first argument of a static method. The first argument of a class method is where the class is passed. The reason that self is now excluded when defining interfaces comes from considering who reads interface definitions. By their nature, interfaces are meant to be read from the outside; from beyond the facade. The self attribute of methods is an implementation detail, and is not a concern of those who make calls on an interface. With Python2.2, you can demonstrate this by defining a class that has static methods only, but which still satisfies some interface definition. The self argument need not occur at all. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Defining Interfaces
Hi folks, When I define an Interface, are the methods of the interface supposed to have self as the first argument? It certainly seems that way from ./lib/python/AccessControl/IUserFolder.py in Zope2. It also seems that way from the Interface Interface. However, many of the interfaces in Zope3 omit the self argument. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Defining Interfaces
Jeffrey P Shell wrote: On 1/27/02 11:25 AM, Steve Alexander [EMAIL PROTECTED] wrote: Hi folks, When I define an Interface, are the methods of the interface supposed to have self as the first argument? No. In which case, perhaps we should change InterfaceInterface and InterfaceBaseInterface from Interface/iclass.py to reflect this. The ZDG should also be updated to reflect this, as the example is wrong. http://www.zope.org/Documentation/ZDG/ComponentsAndInterfaces.stx from Interface import Base class Hello(Base): The Hello interface provides greetings. def hello(self, name): Say hello to the name class HelloComponent: __implements__ = Hello def hello(self, name): return hello %s! % name Shall I throw this into the Collector? -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Security Gurus Wanted
vio wrote: Just a word to thank you for your reply. But incidently, wouldn't it be a good idea for Globals.InitializeClass() to throw an error or a warning of some kind for hanging 'security.stuff()' declarations, declarations which do not have a related ClassSecurityInfo object AT THE CLASS LEVEL? That would be a fine idea. Unfortunately, there is no straightforward way telling that you called methods on the security object in the class definition. When you call Globals.InitializeClass(your_class), it looks for a ClassSecurityInfo object, and doesn't find one. The fact that your class definition had the side-effect of altering the module's security object doesn't leave any traces in the class object that results from your definition. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Security Gurus Wanted
vio wrote: deletia So Globals.InitializeClass(your_class) finds the declaration 'security.declareSomething()' inside a class, but 'security' being a reference to a ClassSecurityInfo object AT THE MODULE LEVEL somehow has no effect at the class level (while I wrongly thought that by declaring it at the module level like that, it will behave more or less like a 'global' variable). deletia In my opinion, Globals.InitializeClass() should check such calls to security methods You appear not to understand how Python and the declarative security system in Zope work. Globals.InitializeClass() does not read the source to your modules. You would need some sort of lint tool to perform the checking you describe. Why not try to implement a simple case of the error-correcting system that you describe? You might want to extend an existing lint tool such as PyChecker, to take account of conventions used in Zope products. http://pychecker.sourceforge.net/ -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] increase penis size by an average of 26% sex drive also
River wrote: * Extend http://www.cable-descramblers- etc.com/extendprice.html * Natural formula that is guaranteed to increase penis size by an average of 26%. * Get RESULTS NOW with *EXTEND http://www.cable-descramblers- etc.com/extendprice.html*! ** ** Thicker ** ** Longer ** ** Confidence-building penis ** ** Increased sexual stamina ** ** Fullness with every stroke ** ** Deeper penetration ** ** Superior sexual stamina that you and your sexual partner have always imagined ** CLICK UNDERLINED LINK TO RECEIVE INFORMATION Please submit this patch to the collector, and I'll see what I can do to get it into the Zope core. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
RE: [Zope-dev] Re: User Groups
A role is essentially a group. I think the general consensus is that a role is not essentially a group although the two can be easily confused ;-) If you have a role, you're in a group - the group of all people with that role. My apologies for having included the world in my reply. I was thinking that I was replying to a more limited group. You must have used the wrong role ;) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] zope collector is broken
Florent Guillaume wrote: Okay it seems fixed, but I wanted to mention a similar user-experience problem in CMF and workflows in general: Suppose a user clicks publish in the action box, enters his comment and then clicks the Publish button. And the re-clicks on the Publish button (either because he double-clicked, or because he retried because the process seemed slow). Then the first click will correctly change the object state, and the second click will be unable to publish because from the public state there is (obviously) no further publish transition. So the user will get a message like the one below. Because I saw that these double-clicks are somewhat frequent in our case, I put a try: except: in content_status_modify. For one of my applications (not CMF based), I use unique form ids to catch if a form is submitted twice. I also use a bit of javascript to ignore a second click on the submit button, which reduces the load on the form-ids manager. I'd post the javascript... but I can't find it just now. It is just a three-liner to set a variable when the button is first clicked, and only allow the submit action to run if the variable is unset. Actually, now that CST is in the Zope core, I should rewrite the form-id manager to take advantage of that. -- Steve Alexander ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
