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Re: [Zope] Zope 2.5 and TransparentFolder incompatibility
by Joachim Werner 15 Jun '02

15 Jun '02

Hi! Some notes on Transparent Folders (TF): a) We've been using TF heavily and we really regret it. The performance hit is enormous, especially if you have nested TF. We got response times up to 10-15 secs on a fast Athlon server with loads of RAM. That's extremely bad. b) I don't know why TF should not work fine with Zope 2.5.1. We were using OrderedFolder with transparency support enabled, and that worked. Maybe there are issues with plain TF, I don't know. So, yes, eliminating TF in your product will be a major pain, but I'd rather do it anyway (even if you don't HAVE TO eliminate them for compatibility reasons). Some solutions for the problems you mention: a) One idea is putting everything into one large root folder (and do the same for the subfolders). I.e., all the images would not be in an image folder but in the main folder. Then use FolderFilter to create views that only display images, content, etc. With some additional magic you could make sure that your end users don't see the stuff that could irritate them. b) Write a method, e.g. "getImage()", that looks in the local Images folder first and then dives into the hierarchy. This is way more efficient than TF and has a similar effect. I have to admit that dtml syntax becomes rather ugly with that ("<dtml-var "getImage('image.gif')">" instead of just <dtml-var image.gif>), but it works. I perfectly understand your problems, and TF seem to solve them elegantly. Elegantly yes. But not efficiently. That's the problem. I am not Zope3-literate yet, but I was told that Zope3 will offer much better solutions for problems like that. We'd need additional namespaces. E.g., you are using transparent Images folders to make sure that one can overload certain images locally without having to overload all images. What you'd really need is not TF, but an image namespace (let it be represented as a folder or not) that looks up in other image locations if an image is not found locally. That's similiar to what skins do in the Content Management Framework. I guess it would be rather simple to build a folderish object that uses a different way of acquisition (e.g. looks for other folders of its kind in the hierarchy). Joachim

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pdf generator troubles
by Erik Myllymaki 15 Jun '02

15 Jun '02

DTML calls an external method to show a PDF file inline: <dtml-call "RESPONSE.setHeader('content-type','application/pdf')"> <dtml-call "RESPONSE.setHeader('Content-Disposition','inline;filename=somefile.pdf')">< dtml-var expr="pdftest('C:\somefile.pdf')"> external method is like this: -------------------------------------------------- def pdftest(pdf_filename): import sys f=open(pdf_filename) y = f.read() f.close() return y --------------------------------------------------- But I always get a *File is damaged* error no matter what PDF file I give it. Testing the function outside of zope, it returns only part of each PDF. as soon as it hits STREAM it stops...? Zope 2.3.2 on WinNT Server 4.0 Note:tested ONLY with IE 5.5 on win2k

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<dtml-var maimxum length of expression
by p.t. 15 Jun '02

15 Jun '02

Does somebody know the maximum length of an expression in dtml-var? 1024 characters? TIA, p.t.

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Zope 2.6.0a1 download link broken!!!!!
by Joachim Werner 15 Jun '02

15 Jun '02

Hi! Could someone please fix the download link for 2.6 alpha 1? It doesn't work, and seems to contain a trailing whitespace. Cheers Joachim

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Statistics Product?
by hpinson＠indepthl.com 15 Jun '02

15 Jun '02

Can anyone suggest a statistics product for standalone Zope? Harlow Pinson Indepth Learning Email: hpinson(a)indepthl.com Web: http://www.indepthl.com Voice: 505-994-2135 FAX: 208-475-7678

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Sort by key in dtml-in loop over dictionary
by Pierre Godefroy 15 Jun '02

15 Jun '02

Hi everybody! I have a dtml-in loop which iterates over a dictionary : <dtml-in collectionOfStr1s sort=title> <dtml-var "collectionOfStr1s[_['sequence-index']]['title']"> <dtml-var "collectionOfStr1s[_['sequence-index']][''ancestor']"> </dtml-in> The "collectionOfStr1s" dictionary was previously fed with successive dtml-calls : <dtml-call "collectionOfStr1s.append({''ancestor':ancestor, 'title':title})"> etc. Everything works fine except that the result of the dtml-in loop is always unsorted (at least certainly not by title : it just spits out the dictionary entries in the order in which they were entered. I have a feeling I am missing something stupid but essential... Could you help me? Pierre Godefroy

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Simple RCS Question
by Derek Basch 15 Jun '02

15 Jun '02

Hello Zopers, I need to update my xmlrpclib.py module so that it can marshal the DateTime datatype. I found a patch here: http://www.zope.org/Members/peterb/xml-rpc but it is a RCS file and Ive never used RCS before. I downloaded a few different windows based RCS tools but after an hour of guessing I cant see any obvious way to merge this with my existing xmlrpclib.py module. Can any take pity on me and save me a few hours of wandering. Thanks, Derek T Basch __________________________________________________ Do You Yahoo!? Yahoo! - Official partner of 2002 FIFA World Cup http://fifaworldcup.yahoo.com

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[ANNOUNCE] EuroPython/Zope 2002 : D-10 Status
by Denis Frere 15 Jun '02

15 Jun '02

Hi Zopistas, Ten days left before EuroPython/Zope 2002 ! We're proud to announce that the 200th attendee has been registered during last week. We'll have visitors from European countries (of course), but also from India, Nepal, Uzbekistan, ... :-) It will be a very important meeting which will be gathering all those who will build a stronger Zope presence during next years. Don't miss it : http://www.europython.org Regards, Denis -- Denis FRERE P3B : Club Python(-Zope) Belge --------- http://www.p3b.org OS3B : Club Open-Software(-Linux) Carolo http://www.os3b.org Aragne : Python-Zope Solutions & Formations http://www.aragne.com

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Announcement: Interview on EuroPython
by Tom Deprez 15 Jun '02

15 Jun '02

An interview with Jim Fulton is online at EuroPython, have fun http://europython.zope.nl/interviews/entries/jim_fulton Tom.

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Re: [Zope] Performance question
by Dirk Datzert 15 Jun '02

15 Jun '02

Chris Withers schrieb: > > > http://web04/Technik/ is normally a page which needs 3 sec to build. I > > get 29 client-timeoute out of 30 request. > > Well, that would suggest something is locking. Are you using any database > adapters? database adapters used on other pages, but not on this. LDAPUserFolder and LDAPRoleTwiddlers are used for authentication. LDAPUserFolder and LDAPRoleTwiddlers have working caching mechanism. > Out of interest, did you run the tests from the same machine that is running > Zope? > the tests are running from a other machine. > > How can I give Python more memory ? > > Why do you want to? I thought more memory is better performance. > > > How can I make Zope use a better caching ? > > Have you looked at the various cache managers that ship with Zope as > standard? not until now. I thought that dtml-methods have internal build in cache mechanism. which cache managers is best for me ? I have dynamic sites on a per user base. > > > I thing that the results of the request are not cached for next request > > ! > > Do you really want that for a dynamic website? ;-) If possible yes ;-) > > > Is it better to use Apache with pcgi ? > > No. > > cheers, > > Chris Thanks, Dirk

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