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Re: [Zope] Zope and Java
by Chris Withers 24 May '02

24 May '02

Oliver Marx wrote: > > >>BTW, Look at Oscar is you realyl want to case abotu type checking > >>in ZODB apps.. > > cheers *lol* Well it is friday after all cheers :D Wow, that was quite spectacularly bollox typing wasn't it? ;-) The MEMS Exchange guys wrote a module called Oscar (or was that Grouch?) for checking the type/structure of ZODB's. If you care about strongish type checking, that'd be the place to look... cheers, Chris

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dtml-tree and python
by Igor Leturia 24 May '02

24 May '02

Hi! I need to create a dtml-tree which obtains the branches from a python function. The best doc (well, the only one) I found is http://www.zope.org/Members/anthony/tree-coding-tricks , but I can't get to work the very same example the author writes there. I have tried two ways: a) writing his python code in a python script, but it says I can't define a class in a python script; b) writing his python code in an external method, but it keeps asking me for authentication and eventually says I have no authorization. Can anyone tell me what the problem is? Has anyone succeeded in doing this, that is to say, building a dtml-tree that obtains the branches from a python method? Thanks in advance, Igor Leturia

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A few Zope advises...
by Thierry Florac 24 May '02

24 May '02

Hi... My question is quite simple, but probably difficult to answer... I'm actually starting a new huge project, which is a complete rebuild of our huge 'intranet' server, actually based on Netscape Server. The new server may be as 'free' as possible... Zope seems to be the best free product actually available for us, to handle the huge amount of documents we have to share, and what I actually need is a few advises and best practices, as : - is there a "prefered" or "best working" operating system to run Zope servers ?? I may have to choose between a Debian GNU/Linux server (SMP on Intel) and a Solaris server (on Sparc). I've read here and there several messages talking about problems with Zope on Solaris, are they always true ?? - as we also have a few applications to share, which can't be handled by Zope before several weeks, is there a best way to combine Zope and Apache ?? mod_proxy, mod_rewrite, pcgi, fastcgi, virtual hosts ??? What are the benefits and drawbacks of each of them ?? - as our needs are rather simple, and may just include customization and improvements to standard products, are there any benefits or drawbacks to write our new products as ZClasses, instead of full Python written products ?? Are the performances of each other equivalent ?? - as we may quickly have a large amount of documents stored in our Zope database, is it a better practice to store everything into the ZODB, or to make Zope handle only metadatas and store real documents into external objects (by using products like ExternalFile, for example) ?? I'm a little afraid when thinking of all my files stored in a single Zope database, and I think that storing documents externally may speed up several processes like incremental backups... As you can see, we are just starting our Zope evaluation, and so I'd really like to receive any advise or suggestion to implement Zope as well as possible... Thank you for any advise or comment, Thierry P.S. : please be kind to answer to this mail directly, because I had to unsubscribe from this mailing list for professionnal reasons... :-((

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Re: A few Zope advises...
by Josef Meile 24 May '02

24 May '02

Hi Robert, I'm a little bit curious about your advice: > However if you feal comfortable with any programming language I would not > start do use ZClasses but go directly for Python products. > They are not harder to do, you have much more controll over what is > happening, they are easy to test and debug... As you and some people have said, with python you can do more robust objects. My question is: Are ZClases going to dissapear in the near releases of Zope? or Will they continue as an alternative to the user? The thing is that all my products are ZClass based and now I don't have much time to convert them. I'll do it becaue I think it's better when you can have more control of your objects. Thanks, Josef.

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RE: [Zope] Strange pdf problem
by Arian de Wit 23 May '02

23 May '02

Hi All, > We have a pdf file in our [Zope] database, and there's a problem with > displaying it. > Some PDFs work others don't. On my machine with only Adobe Acrobat > Reader, I get the blank screen. On one of my colleagues with the full > Adobe installation, we don't get the problem. We have found a workaround for this problem, as follows: Open the PDF from a local copy into full Acrobat. Save As a .PS file with a different name. Double-click the .PS file to have Acrobat distill it to a new PDF (often much smaller, like 4MB down to 300KB!) Upload the new PDF into Zope and test. (FYI, we often use ExternalFile for large PDFs to prevent bloating the ZOD, but not always. In doing so, the object's "behave like" property needs to be set to "Image".) This worked for us on the few problem PDFs we've had so far -- YMMV. Cheers, Arian ------------------------------------------------------------------ Arian de Wit Information Systems Integration Manager NIWA (National Institute of Water and Atmospheric Research) Gate 10 Silverdale Road, Box 11-115, Hamilton, New Zealand 2001 Phone (+64) 7-856 1769 Fax (+64) 7-856 0151 Web http://www.niwa.co.nz ------------------------------------------------------------------

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Working in versions
by Zope Ista 23 May '02

23 May '02

Is it possible to programatically work in a version? It's easy to create one with a Python script but how do I start working with objects and then commiting or abandoning that work? Is it pretty easy? I can't seem to figure it out and need a little help getting started. __________________________________________________ Do You Yahoo!? LAUNCH - Your Yahoo! Music Experience http://launch.yahoo.com

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Programatically working in versions?
by Zope Ista 23 May '02

23 May '02

Is it possible to programatically work in a Version? Obviously adding a version is pretty easy but how would I start working in one from a Python script or commit the data? ________________________________________________________ Outgrown your current e-mail service? Get a 25MB Inbox, POP3 Access, No Ads and No Taglines with LYCOS MAIL PLUS. http://login.mail.lycos.com/brandPage.shtml?pageId=plus

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RE: [Zope] A few Zope advises...
by sean.upton＠uniontrib.com 23 May '02

23 May '02

If hardware is an issue, it should be said (if you have existing Sun hardware), Zope will run quite nicely on Debian/SPARC (my current ZEO storage server, for example, runs on Debian on an E450). Though I imagine you will get much better speed out of Intel/AMD-based hardware for Zope than you would out of Sun hardware. Sean -----Original Message----- From: Mike Renfro [mailto:renfro@tntech.edu] Sent: Thursday, May 23, 2002 11:39 AM To: Thierry Florac Cc: zope(a)zope.org Subject: Re: [Zope] A few Zope advises... On Thu, May 23, 2002 at 06:45:49PM +0200, Thierry Florac wrote: > - is there a "prefered" or "best working" operating system to run Zope > servers ?? I may have to choose between a Debian GNU/Linux server (SMP > on Intel) and a Solaris server (on Sparc). I've read here and there > several messages talking about problems with Zope on Solaris, are they > always true ?? All mine run on Debian (i386). I'm far more comfortable there than in Solaris, and all my Solaris installations are scientific workstations anyway. So no Solaris servers here. One thing to keep in mind is that if you: - want to run Debian's stable release, and - want to run the latest Zope, and - don't want to compile either Zope or Python yourself you might run into trouble. Debian's release schedule is very conservative (some might even say slow). The main hitch is when Zope starts requiring a newer version of Python than Debian has in its stable release (as happened between Zope 2.3 and 2.4). Workarounds include: - tracking something other than the stable release of Debian, or - building more recent Zope/Python sources into Debian packages, or - building more recent Zope/Python sources into /usr/local And this says nothing about relative hardware reliability between Sparc and Intel platforms, which may or may not be a factor in your decision. > - as we also have a few applications to share, which can't be > handled by Zope before several weeks, is there a best way to combine > Zope and Apache ?? mod_proxy, mod_rewrite, pcgi, fastcgi, virtual > hosts ??? What are the benefits and drawbacks of each of them ?? I use proxy and rewrite (insert plug for http://www.zope.org/Members/mwr/VHosts_With_Zope_Default) and each major production site gets its own INSTANCE_HOME for custom products. A Zope VirtualHostMonster can make Zope content in a subfolder look like content in the root folder of that site. > - as our needs are rather simple, and may just include > customization and improvements to standard products, are there any > benefits or drawbacks to write our new products as ZClasses, instead > of full Python written products ?? Are the performances of each > other equivalent ?? Python. Use http://www.zope.org/Members/maxm/HowTo/easyProduct to get a quick start; as quickly as one can develop a Python product with Max's structure in place, I'd be surprised if a ZClass was much faster. I think he's working on an updated version including Catalog awareness and perhaps some cosmetic changes to the management interface to make it look more like core Zope products. I have no idea about performance differences, if any. > - as we may quickly have a large amount of documents stored in our Zope > database, is it a better practice to store everything into the ZODB, or > to make Zope handle only metadatas and store real documents into > external objects (by using products like ExternalFile, for example) ?? Do you need to take advantage of Zope's "Undo" capabilities? If so, I think you'll end up using the ZODB. If not, use one of the external file products. > P.S. : please be kind to answer to this mail directly, because I had > to unsubscribe from this mailing list for professionnal > reasons... :-(( But since you can send email to the list, I'm sure we'd all love to hear what profesional reasons prevent you from subscribing. -- Mike Renfro / R&D Engineer, Center for Manufacturing Research, 931 372-3601 / Tennessee Technological University -- renfro(a)tntech.edu _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

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MailHost errors
by Colin Fox 23 May '02

23 May '02

Hey, all. I'm invoking a dtml-method from a script, and the dtml-method has a dtml-sendmail call within it. I'm getting a Error Type: KeyError Error Value: MailHost when I try to execute my dtml-method. I have a MailHost object in the parent directory. I was assuming that acquisition would allow a subfolder to see the root folder's MailHost object. Am I wrong? I have another dtml method in my root folder, and that successfully sends out emails with the same MailHost object, so I know the MailHost configuration, and my sendmail configuration, is fine. One other difference is that the root folder dtml method is invoked by another dtml method, and the dtml method in my subfolder is invoked by a script. Does that make a difference? TIA, Colin -- Colin Fox cfox(a)crystalcherry.com CF Consulting Inc. GPG Fingerprint: D8F0 84E7 E7CC 5C6C 9982 F1A7 A3EB 6EA3 BC97 572F

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Assistance.
by Austin Pysor O. 23 May '02

23 May '02

Sir, i have downloaded zope to my system and it's installed but i have not been able to get to zope working environment each time i enter the url: "http://localhost:8080/manage" suggested in the install note. your assistance will be greatly appreciated. thanks. austin P. __________________________________________________ Do You Yahoo!? LAUNCH - Your Yahoo! Music Experience http://launch.yahoo.com

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