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Re: [Zope] Parsed XML
by Elena Schulz 14 Jun '02

14 Jun '02

Hi, I found SLiP some days ago. It is a shorthand syntax/editor for XML or XML-like data and the translator is written in python. Just search for it in the web. Hope it helps? Elena You wrote: The minidom won't quite do what I need. This particular project is a web-hosted XML editor, really a development front-end for another system. The ParsedXML product holds and manages the corpus of the material being edited... Now that I have a semi-working alpha-release it may be time to rethink the system and redesign for performance and simplicity. ParsedXM drags along a lot of mechanism that I do not need. In fact, my experience as been that XML and the DOM is not a great internal representation--better to parse the XML into a more maleable data structure, do what needs to be done, and reconstruct. Comments & suggestions most welcome. -d

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Search ZCatalog from Python code
by Ioannis Koukos 14 Jun '02

14 Jun '02

I've been trying to find documentation on how to search the ZCatalog from within a Zope product but there is a lack of documentation on that. Can this be done? If this is the case, how can external python products 'see' the context and container objects? Could there be an alternative solution based on the creation of a Python Script inside Zope (thus binding the context-container) and then calling it from the Product code? Same question for a DTML method. Regards, John --------------------------------- Do You Yahoo!? Αποκτήστε την δωρεάν σας(a)yahoo.gr διεύθυνση στο Yahoo! Mail.

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worldpilot
by Roger Oberholtzer 14 Jun '02

14 Jun '02

Hello I have installed Worldpilot on Zope 2.5.0 on Linux. Overall, it is pretty much working. My question is: does anyone know if it will continue to be maintained? If not, is there another product that matches worldpilot's features and nice interface? -- Roger Oberholtzer

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PythonScripts: reduce()
by Jørgen Hermanrud Fjeld 14 Jun '02

14 Jun '02

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi. The manual states that reduce() is usable to circumvent security, and cannot be used, but I cannot understand why a safe_reduce hasn't been made. Are there some principal objections to writing one, or hasn't it been done yet? - -- Sincerely Jørgen Hermanrud Fjeld jhf(a)hex.no -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org iEYEARECAAYFAj0JmuoACgkQ9jvTqPy5VsrDyACfSxwoGYMlt566uw2f6T5pBw0H B5QAn1gn0WqqPJxVNDM8HXrdDb3rtQGS =IRbg -----END PGP SIGNATURE-----

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Count results of ZCatalog query
by Juergen R. Plasser / Hexagon 14 Jun '02

14 Jun '02

How can I count the results of a ZCatalog query? This must be a simple thing... I have tried <dtml-var "_.len(Catalog)"> but with no success. Juergen

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Localizer problems with 'myMessageCat'
by Nico de Boer 14 Jun '02

14 Jun '02

Hi, I'm trying out the product Localizer Version 0.8.1. I am following the Tutorial from CodeSyntax available at: www.zope.org/Members/CodeSyntax/DTML_Localizer I only have some parts that I don't understand: At Tip # 1: Then, go to the Localizer folder, choose properties, and add selected_language to accept_methods What is Localizer Folder here, because I can't find the property accept_methods and so can't add selected_language. At Tip # 4: In the form the following call is made: <dtml-var "myMessageCat(title, id)"> But I can't find the method myMessageCat in the code. I get the following error: NameError: global name 'myMessageCat' is not defined Can somebody help me with this problems? Greetz Nico

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Re: [Zope] Zope 2.5 and TransparentFolder incompatibility
by Terry Hancock 14 Jun '02

14 Jun '02

Hi, I've been following this thread as it may have very bad consequences for me. I'm currently developing a product which relies Transparent Folders, and I've been told that I need to upgrade to avoid some bugs, which I've been encountering in development (Python 2.1.1 + Zope 2.4.3, which is supposed to have known problems). I was planning to upgrade straight to Python 2.1.3 + Zope 2.5.1, especially since I have an application for "TempFolders", at least as soon as get to a reasonable breaking point. (I'm fairly paranoid about upgrading dependencies in the middle of development, as it usually breaks stuff, and I really don't need (my bugs) x (other bugs) to solve!) Eliminating TFs would be a major pain, and for anyone in the "don't use them, they're bad" camp, I challenge you to find a better solution (yeah, okay, I'll say it's a "friendly" challenge, but still...). Let me illustrate what I mean: APPLICATION #1: Clearing mgmt folders ------------------------------------- This is the one everyone talks about, but I will emphasize here that this is not merely for my benefit, but also directly visible to my users (who will often be customers). The site, as designed, will have top-level common areas, as well as subfolders for particular users. Some areas (home folders) will be flat, but others (project folders) will be self-similar recursions of the top folder). The site is image-intensive, so we have images stored in subfolders, generally according to their function. For illustration, I'll only use the "Image" folder, but there are others. Potentially, we have something like this: TOP | +------------------+-------------------+ | | | | | Image Project Home | | +------+ +-------+ | | * | | Image Image Sub- Project | +------+ * | Image In this illustration "*" represents a collection of various other files, and all the "Image" folders are transparent. Because of TFs, a user can put their own images in Image which will overload or complement images in the image directories above them. So, ordinary users can use their own images and anything in the common image directory, while projects can use the public images, provide their own for subprojects, or use specialized ones in each subdirectory. This is important because the different locations are subject to different permissions: only the user (and an administrator) can access a users folders, and only a project moderator can access project files -- which is self-similar in the sense that the moderator can assign a sub-moderator to a sub-project. This has various consequences, including legal ones: Under one of the not-so-evil clauses of the DMCA, I can't be (or can't easily be) sued for copyright violations that a user makes. Less controversially, that user may have legitimate copyright or trademark protection on their images and not want to share them with the whole community (e.g. personal avatars or commercial logos). In any case, I don't want to force them to share all their content by putting it in the top level shared folder. Without TFs, however, if the user added an Image directory, it would shadow the global one, and that's not what we want. There is a workaround, in that I can *tell my users* to use a URL like this: Image/Home/<username>/Image/ instead of Image/ I emphasize that this is not a requirement on me, the developer, but on my user, "For whom all things must be made simple". Also, in contrast to the filter argument made earlier in this thread, this CANNOT simply be the result of filtering for "Image" filetypes. There are many types of images, some of which shouldn't be mixed into this hierarchy (graphical buttons, for example). Besides, it gets worse, with ... APPLICATION #2: Organizing content classifications -------------------------------------------------- Now, I mentioned that we have shared content (both at the top level and in projects). That content is not all under the same license terms, though -- some may be Public Domain, BSD-type, GPL, DSL, etc. So, we subdivide the Image folder(s). Furthermore, the art is usually in collections, not just random isolated images. So, for example I have a collection of art based on Tenniel's Alice in Wonderland illustrations (thank you, Project Gutenberg!) and another set collected by the University of Oldenberg in Germany, based on scans of "old, heavily illustrated children's stories". So I'll put these two directories beneath PubDom -- the other areas will likely acquire such divisions as well: Image | +------+------+------+------+ | | | | | PubDom GPL BSD DSL CF | +--------------+-------------+ | | * AliceTenniel Oldenberg Now, *these* are *all* transparent folders, because I want to be able to get the images by simply searching "Image", not by having to remember each subdirectory. If I want to do this with plain Zope acquisition, I'll need to tell my users to thread through all possible directories, like this: Image/PubDom/AliceTenniel/Oldenberg/GPL/BSD/DSL/CF/Home/<username>/Image (Note that it's easy to screw this up, Image/PubDom/GPL/BSD/DSL/CF/AliceTenniel/Oldenberg/Home/<username>/Image won't work, for example). Which I again emphasize, is a requirement on my user, not just me. The directory tree above allows me to put collected attribution information into a README or some such, without necessarily having to verify that each image has attribution information in a property, for example. Furthermore, this hierarchical arrangement is much more effective for users to browse the image collection (it's trivial to write a browsing interface in Zope to examine Image directories recursively, I'd have a much harder time using filters of some kind). Now, you may think that this is all "just cosmetic" or that I shouldn't worry about such trivialities, and just work around this problem, but really, *I* think I need transparent folders. --- So, if my use-case convinces you, can I please ask what the deal is with Transparent Folders in Zope 2.5? Can I upgrade, or what? I actually don't care too much about Session tracking, though I would really like to use TempFolders, as they solve a server-side caching problem I'd like to do in Zope (instead of relying on a front-end cache, for example). That's another problem entirely, but a constraint nevertheless. I've also had problems subclassing "Folder", even in very trivial cases (e.g. I have one object that if I call "absolute_url" on it, gives me the parent folder's URL instead of its own -- is there some step I'm missing? I haven't even overloaded the __init__ -- I've just subclassed folder, changed the meta_type and added a couple of methods which I'm pretty certain are not overloading anything -- manage_addFolder() seems to be very simple, especially if you eliminate the "Create User Folder" and "Public Interface" options, so I don't see how I can be missing anything.) So I'm a little leery of recoding a specialized TF for my purposes, as it certainly seems there are lurking problems to bump into. Should I try Python 2.1.3 + Zope 2.4.4? Or can I go ahead with Python 2.1.3 + Zope 2.5.1? I've already run into bugs with my current configuration (at least I *hope* they're the known Python/Zope bugs!). Anyway, any ideas, advice, or comments would be appreciated. Cheers, Terry -- ------------------------------------------------------ Terry Hancock hancock(a)anansispaceworks.com Anansi Spaceworks http://www.anansispaceworks.com P.O. Box 60583 Pasadena, CA 91116-6583 ------------------------------------------------------

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here/Title returns too much -- doc name and status
by James Hazard 14 Jun '02

14 Jun '02

I'm working in CMF, customizing main_template. I'm simplifying the presentation and want to show only the document name and not its status (Created by jgh. Last modified 2002-06-13 17:20:41.) In my slash and burn way, I've narrowed this down to the following bit of code, which produces the Page Title as expected and desired, but throws in the status: <div metal:define-slot="header"> <h1 id="DesktopTitle" tal:content="here/Title"> Page Title </h1> </div> Any ideas why?

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Can't customize scripts in CMF/plone
by Noel Burton-Krahn 13 Jun '02

13 Jun '02

Zope-2.5.1-x86, CMF-1.3beta, CMFPlone-0.9.9 I'm trying to customize the plone search form. If I "Customize" portal_skins/generic/search, then I get this error when I do a search: Site Error: Error Value portal_url not found in 'portal_url', at line 25, column 13 That error is in standard_html_header. Then, I tried customizing portal_skins/custom/doFormSearch, but non of my changes had any affect. I think the customize method only works for page templates, but is broken for scripts and portal tools. Am I missing something?

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RE: [Zope] Using Java objects with the JPE
by Riggs, David 13 Jun '02

13 Jun '02

I've now got Zope interacting with Java objects (and very smoothly in fact). Since I havn't seen any good info on setting this up, and since the JPE is very poorly documented, here's how I did it: 1. Acquired binaries of the JPE. Only source code is provided on the website, and the python modules must be built with MS Visual C, so I was not able to compile this myself. Chris Withers was kind enough to provide a compiled version to me, I'll happily send this out to anyone that would like it. 2. Dropped the python module directory (called 'java/') into zope/lib/python/. 3. Added my Java classes and .jars to my CLASSPATH, in this case I just added it to the beginning of the Zope startup batch file. 4. Created a small python script (TrainingView.py) and dropped it into zope/Extensions/. It looks like this: import java from java.jvm import isInitialized, initialize from java.jobject import importClass, Jobject, Jstring, javalib if not java.jvm.isInitialized(): print 'JVM not initialized, initialize()ing...' java.jvm.initialize() def getTrainingView( action='', user='', pass_='' ): TrainingView = importClass('com.saic.ewing.training.TrainingView') myObj = TrainingView() return myObj.getTrainingView( Jstring(action), Jstring(user), Jstring(pass_) ) 4.5 Restart Zope :) 5. Create an external method that looks like this: ID: trainingApp Module Name: TrainingApp Function Name: getTrainingView 6. I post to the external method with a form that has eg. <input name='action' type='text'> and the String that my Java object returns is displayed! This particular Java object does a remote procdure call via SOAP, then does an XSL transorm on some XML and spits HTML back as a string. Good stuff! David A. Riggs Science Applications International Corporation - SAIC (304)284-9000x201 driggs(a)asset.com -----Original Message----- From: Dieter Maurer [mailto:dieter@handshake.de] Sent: Wednesday, June 12, 2002 1:56 PM To: Riggs, David Cc: zope(a)zope.org Subject: Re: [Zope] Using Java objects with the JPE Riggs, David writes: > I'm trying to access some existing java objects through python with the > python JPE library. I'm able to use these objects fine from the python > command line, but I've spent hours trying to set things up with zope and > have had no luck. > > Where do I put the JPE libraries for Zope to find them? I've got them > under lib/Python/java right now. Do I need to add them as a Product? Please search the mailing list archives (or the Python documention) for PYTHONPATH. It is this environment variable that you need to extend to let Zope find the Python modules and share objects of JPE. I did not yet use JPE. Thus, it might also be the other way round. > Where do I put my java classes for the JPE to find them? I'm assuming > that they just need to be relative to my system CLASSPATH. Yes, try this. > Like I said, I've got everything working from the command line... How do you do it? Do you start Python and then load a JPE module or do you start JPE and tell is to activate a Python interpreter? Dieter

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