May 1999 - Zope - Zope lists

zope transactions
by Jay, Dylan 19 May '99

19 May '99

Would I be right in saying that when zope is executing an external method all other requests are blocked? What about sql transactions? My site seems to be experiencing some long lags in getting a page. Is there anyway to improve this?

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Zope Installation
by Andreas Klambauer 19 May '99

19 May '99

I have just downloaded the binary 1.10.2 for linux2/386 unpacked it and run ./install .... I get an error: ./install: line 12: 7520 Segmentation fault I am using Suse 6.0. Thank you

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RE: [Zope] zope transactions
by Paul Everitt 19 May '99

19 May '99

Dylan wrote: > Would I be right in saying that when zope is executing an > external method > all other requests are blocked? What about sql transactions? That's correct. > My site seems to be experiencing some long lags in getting a > page. Is there > anyway to improve this? The short term answer is to look at the caching options on SQL Methods. The long term answer, starting with today's alpha release, is Zope2. --Paul

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NULL columns
by Jeff Nielsen 19 May '99

19 May '99

How do I test if a variable queried from a database (MS SQL Server) is NULL or blank? For the blank, I can use , and it works fine. However, this test fails for NULL (It branches true when it should branch false...)

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RE: [Zope] copy error?
by Robert Leftwich 18 May '99

18 May '99

My problem turned out to be some corruption in the cookie files (probably caused by my playing around with different techniques for preserving information between forms). Deleting the cookie files fixed the problem. Robert Leftwich On Wednesday, 19 May 1999 7:11, John Eikenberry [SMTP:jae@kavi.com] wrote: > On Tue, 18 May 1999, Robert Leftwich wrote: > > > Did you ever solve this issue ? > > > > It's just started happening to my installation/s (WinNT Zope 1.10.2/1.11.1 > > IE5, Opera 3.10) even after re-installing Zope, trying different browsers, > > everything I could think of. > > The really interesting/frustrating bit is that I was adding copy/cut/paste > > support to my application when it occurred. > > My problem was that I was going through a web proxy (junkbuster) that, > amoungst other things, blocks cookies from unapproved sites.... and I had > forgot to approve my site. :) > > Basically, cookies are required for cut/copy/paste... check to make sure > they are working properly. > > --- > > John Eikenberry > [jae(a)kavi.com - http://taos.kavi.com/~jae/] > ______________________________________________________________ > "A society that will trade a little liberty for a little order > will deserve neither and lose both." > --B. Franklin > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://www.zope.org/mailman/listinfo/zope > > (For developer-specific issues, use the companion list, > zope-dev(a)zope.org - http://www.zope.org/mailman/listinfo/zope-dev )

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COMObject Thoughts
by htrd90＠zepler.org 18 May '99

18 May '99

Thanks for posting the COMObject product Amos.... very interesting reading. I have some first impressions that I thought I would share: 1) I suspect there is a problem with the current implementation on multi-threaded servers. pythoncom will initialise the first thread in apartment-threaded mode, but then the com objects gets cached in the COMObject instance. Any future calls on a different thread break the apartment-threading rules. I see there are two ways to solve the problem; either stick with apartment-threading but not cache objects, or get pythoncom to create free-threaded apartments. A related question is how to ensure CoInitialize is called for each thread.... I guess this should be called by whatever creates the thread? (I really am guessing on this part) 2) Providing uncontrolled access to COM objects leaves a very big security hole in the server. This could be partly avoided if COMObject used the IObjectSafety com interface to restrict how the object can be used. I'm not sure how useful such a product would be... any thoughts? Toby Dickenson

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RE: [Zope] copy error?
by Robert Leftwich 18 May '99

18 May '99

Did you ever solve this issue ? It's just started happening to my installation/s (WinNT Zope 1.10.2/1.11.1 IE5, Opera 3.10) even after re-installing Zope, trying different browsers, everything I could think of. The really interesting/frustrating bit is that I was adding copy/cut/paste support to my application when it occurred. At this point I am stumped ! Robert Leftwich On Wednesday, 5 May 1999 17:02, John Eikenberry [SMTP:jae@kavi.com] wrote: > Hey all, > > On my home installation of Zope (see below for system specs), I can't seem > to cut/copy/paste. Whenever I cut or copy somthing it never sticks. The > paste button appears on the screen refresh, but it disappears as soon as > I go into another folder. And if I just hit the paste button while its > there, I always get the error below. > > Specs: > > Debian 2.1 > glibc2.0.7 > linux 2.2.6 > Zope binary distributioin 1.10.2 > netscape 4.5 > apache 1.3.3 w/ pcgi > > > ! No clipboard data found. > > Ok (button) > > Traceback (innermost last): > File lib/python/ZPublisher/Publish.py, line 877, in publish_module > File lib/python/ZPublisher/Publish.py, line 590, in publish > (Info: /img_orig/manage_pasteObjects) > File CopySupport.py, line 150, in manage_pasteObjects > (Object: Navigation) > Copy Error: (see above) > > I haven't had this problem on any other machine. Has anyone else had this > problem? Any ideas? > > BTW, I just tried with 1.11.0pre1 and it still doesn't work (the traceback > is different, but basically the same error). > > Thanks, > > --- > > John Eikenberry > [jae(a)kavi.com - http://taos.kavi.com/~jae/] > ______________________________________________________________ > "A society that will trade a little liberty for a little order > will deserve neither and lose both." > --B. Franklin > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://www.zope.org/mailman/listinfo/zope > > (For developer-specific issues, use the companion list, > zope-dev(a)zope.org - http://www.zope.org/mailman/listinfo/zope-dev )

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FINAL CALL: Testimonials
by Chris Petrilli 18 May '99

18 May '99

Gang, We're trying to put together a quick sheet of users and testimonials for Linux Expo this week, and if any of you have testimonials you'd like to submit, or just want to tell us about your wonderful Zope installation, please send them to me personally, and we'll work on getting them in. What I need for each: * Project Mini-description * Internal/External (URL if external please) * Number of users involved * Why you chose Zope * What other products/frameworks you considered * Contact information (which I won't make public unless you say OK) Chris -- | Christopher Petrilli Digital Creations | petrilli(a)digicool.com http://www.digicool.com

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permissions
by reedstrm＠wallace.ece.rice.edu 18 May '99

18 May '99

Hey you guys: Which of the permissions to I need to give a Role for this case: You are not authorized to access manage_renameObject. It looks like I need the "View Management Screens" permission here, right? If so, that's poorly factored. I can give a Role permission to Add things, but once it's there, they can't fix it. I suppose it's because you don't want the Role to be able to change existing objects, just one's they've added. So, another thing that'll come with Ownership as well, I guess. Ross -- Ross J. Reedstrom, Ph.D., <reedstrm(a)rice.edu> NSBRI Research Scientist/Programmer Computer and Information Technology Institute Rice University, 6100 S. Main St., Houston, TX 77005

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Upgrading Zope
by Jim Harrison 18 May '99

18 May '99

Another newbie question-- When Zope 1.11 (and future upgrades) are released, will the installation process automatically preserve data files from the previous Zope installation? If not, are there guidelines as to which files should be preserved and moved into the new installation? Thanks, Jim Harrison ________________________________________________________________________ James H. Harrison, Jr., MD, PhD Division of Pathology Informatics Department of Pathology, Univ. of Pittsburgh Health System C920 PUH, 200 Lothrop Street Pittsburgh, PA 15213 jhrsn(a)pop.pitt.edu | voice: 412-647-5529 | fax: 412-647-9588 "If you want sense, you'll have to make it yourself!!"-Norton Juster ________________________________________________________________________

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