December 2001 - Zope-Dev

RE: [Zope-dev] Searching
by sean.upton＠uniontrib.com 05 Dec '01

05 Dec '01

I think this could be done well at the application level, above the Catalog if done right, but one would have to have good synonym translation table specific to their application. I do this in an application using a TinyTable with translation information for abbreviations (i.e. VW printed in a classified auto ad gets expanded to Volkswagen, so people can search for both)... If there was any sort of thesaurus database of sorts available to your application, I suppose, in theory, one could do some synonym-oriented indexing, profided that you index a method that brute-force weights the real words by outputting them a greater factor of times than the synonym (i.e. index a method that outputs the original text 3 times and synonyms for the meaningful words (non-stop words) in that text perhaps once. This is not difficult from a development perspective, but involves having synonym data and deciding what words should be translated to their synonyms, and what ones should not. I think the real issue here is not having a database of synonyms - and, at that, you would have to have one for whatever language(s) you needed to support. Sean -----Original Message----- From: Dieter Maurer [mailto:dieter@handshake.de] Sent: Wednesday, December 05, 2001 1:24 PM To: Dirk Datzert Cc: zope-dev(a)zope.org Subject: Re: [Zope-dev] Searching Dirk Datzert writes: > I'm looking for a search tool which can do semantic/synonym search. > > Can this be done via ZCatalog ? Not out of the box. You could place something before ZCatalog (which parses subquerie for search term and expands them into a set of synonyms). But you would need to work quite hard to get true semantic search... Dieter _______________________________________________ Zope-Dev maillist - Zope-Dev(a)zope.org 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 )

1 0

Catalog wierdness ...
by Joachim Werner 05 Dec '01

05 Dec '01

Hi! Any ZCatalog experts out there? I am suddenly getting this with a ZCatalog (it is actually a subclassed version of the ZCatalog, almost a one-to-one copy of the CMF Catalog tool): ------ Zope Error Zope has encountered an error while publishing this resource. Error Type: KeyError Error Value: -" ---------------------------------------------------------------------------- ---- Troubleshooting Suggestions This resource may be trying to reference a nonexistent object or variable - ". The URL may be incorrect. The parameters passed to this resource may be incorrect. A resource that this resource relies on may be encountering an error. For more detailed information about the error, please refer to the HTML source for this page. If the error persists please contact the site maintainer. Thank you for your patience. Traceback (innermost last): File /home/ftp/root/kue-projekt/dev_8080/lib/python/ZPublisher/Publish.py, line 224, in publish_module File /home/ftp/root/kue-projekt/dev_8080/lib/python/ZPublisher/Publish.py, line 187, in publish File /home/ftp/root/kue-projekt/dev_8080/lib/python/Zope/__init__.py, line 226, in zpublisher_exception_hook (Object: TransparencySupport) File /home/ftp/root/kue-projekt/dev_8080/lib/python/ZPublisher/Publish.py, line 171, in publish File /home/ftp/root/kue-projekt/dev_8080/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_addSmartTextBlock) File /home/ftp/root/kue-projekt/dev_8080/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: manage_addSmartTextBlock) File /home/ftp/root/kue-projekt/dev_8080/lib/python/Products/SmartSections/SmartT extBlock.py, line 63, in manage_addSmartTextBlock (Object: TransparencySupport) File /home/ftp/root/kue-projekt/dev_8080/lib/python/Products/SmartSections/SmartS ectionElement.py, line 30, in manage_addSectionElement (Object: TransparencySupport) File /home/ftp/root/kue-projekt/dev_8080/lib/python/Products/OrderedFolder/Ordere dObjectManager.py, line 118, in _setObject (Object: TransparencySupport) File /home/ftp/root/kue-projekt/dev_8080/lib/python/OFS/ObjectManager.py, line 330, in _setObject (Object: TransparencySupport) File /home/ftp/root/kue-projekt/dev_8080/lib/python/Products/SmartSections/SmartS ectionElement.py, line 177, in manage_afterAdd (Object: ElementWithAttributes) File /home/ftp/root/kue-projekt/dev_8080/lib/python/Products/SmartSections/SmartS ectionElement.py, line 172, in manage_routineTasks (Object: ElementWithAttributes) File /home/ftp/root/kue-projekt/dev_8080/lib/python/Products/SmartSections/SmartS ection.py, line 89, in contentIndexObject (Object: TransparencySupport) File /home/ftp/root/kue-projekt/dev_8080/lib/python/Products/Kontentor/Katalog.py , line 130, in indexObject (Object: LockableItem) File /home/ftp/root/kue-projekt/dev_8080/lib/python/Products/ZCatalog/ZCatalog.py , line 498, in catalog_object (Object: LockableItem) File /home/ftp/root/kue-projekt/dev_8080/lib/python/Products/ZCatalog/Catalog.py, line 438, in catalogObject File /home/ftp/root/kue-projekt/dev_8080/lib/python/Products/PluginIndexes/TextIn dex/TextIndex.py, line 381, in index_object (Object: PluggableIndex) File /home/ftp/root/kue-projekt/dev_8080/lib/python/Products/PluginIndexes/TextIn dex/GlobbingLexicon.py, line 166, in getWordId File /home/ftp/root/kue-projekt/dev_8080/lib/python/Products/PluginIndexes/TextIn dex/GlobbingLexicon.py, line 206, in assignWordId File /home/ftp/root/kue-projekt/dev_8080/lib/python/ZODB/Connection.py, line 519, in setstate File /home/ftp/root/kue-projekt/dev_8080/lib/python/ZODB/FileStorage.py, line 588, in load (Object: /home/ftp/root/kue-projekt/dev_8080/var/Data.fs) File /home/ftp/root/kue-projekt/dev_8080/lib/python/ZODB/FileStorage.py, line 584, in _load (Object: /home/ftp/root/kue-projekt/dev_8080/var/Data.fs) File /home/ftp/root/kue-projekt/dev_8080/lib/python/ZODB/FileStorage.py, line 1905, in _loadBack KeyError: (see above) ----- Very strange, as it seems to be a rather low-level error. Any hints? Joachim

2 2

absolute_url FTP upload and CatalogAware
by Niclas Kuehne 05 Dec '01

05 Dec '01

2 1

absolute_url FTP upload and CatalogAware (PLAIN TEXT!)
by Niclas Kuehne 05 Dec '01

05 Dec '01

When I upload a file of a certain class (HTMLDocument) that is CatalogAware the entry in the catalog does not contain the real absolute_url. Instead it shows "http://myserver:21/Zope/Dir1/Dir2/object.html" where "myserver" is the hostname of the linux server, 21 is the FTP port used by Zope and Dir1 & Dir2 are directories. When I clear the catalog and add the documents by clicking "Find Objects" the absolute_url is correct. What is happening here? Any help? Niclas Kuehne Reply to: niclas(a)eho2000.de

1 0

Wild and crazzzzy idea: Hierarchial permissions
by Lennart Regebro 05 Dec '01

05 Dec '01

The list of permissions is getting quite long. It's the basic permissions of Zope, plus the ones for our CM system. And we haven't even integrated CMF with it (which we may or may not do in the future). To make things easier to find we have names all our permissions "Easy <something>". I then got the idea that the permission list could be hierarchial or filtered or grouped or something. All permissions would have another setting to specify it group. That way the Zope base permissions could be grouped together into a "Zope Base" persmission group. We could group our in an "Torped Easy Publisher" permission group, and so on. Good idea or stupid?

6 6

Zope Exceptions and translation
by Andre Schubert 05 Dec '01

05 Dec '01

Hi all, I'am looking for several products to translate zope-site into german. I have found ZBabel and it works very fine for normal websites. It always works fine in the standard_error_message if there is an error_value and an error_type. But it doesnt work if i get an string exception, because the error_value is an complete html-site. Therefore i tryed to patch some Exceptions in HTTPResponse to raise an class-Exception and a short string as error_value. The problem i see is that all exceptions in zope are raised in many defferent places and thats very difficult to patch them or to make them translation-able. I think it is a good way to change all string-exceptions like these in HTTPResponse to class-exceptions and the error_value to a normal description. With these changes the standard_error_message could be raised and there is an ability to translate the error_value. Do i think in the right way or did i missing any facts thanks as

6 9

Cool stuff!
by Phillip J. Eby 05 Dec '01

05 Dec '01

I just looked through a few parts of the Zope3 CVS tree, and I must say it's looking mighty nice so far at the 50,000 foot level... I especially like the Zope.Transaction package; it'll eliminate the need for my ZLite.Transaction hack. Indeed, much of the package-level refactoring seems much more friendly to those of us who'd like to pick and choose the parts we use. The Zope.Publisher and Zope.App.ZopePublication packages look cool too. Very nice configuration system, with meta-configuration, even. Very awesome. I can see how this will make it easier to create products that influence other products, although I'm not sure how the import order works out; haven't gotten that far just yet. Nonetheless, this is all *really* impressive stuff. So far, the only thing that's been at all negative is that many of the 'IFooBarBaz' interfaces seem a little confusing as to what they do, in that their names don't seem very obvious or self-documenting, at least to me. But I promise that once I *do* figure out what they do, I'll try to suggest more evocative names. :) The interfaces in the tutorial could use improvement similarly; again if I can think of anything better I'll try to suggest naming conventions. P.S. Speaking of naming, I still dislike "feature" as a term for interface implementations; various suggestions available on the "Feature" page of the ComponentArchitecture Wiki. :) P.P.S. You guys must've been *really* busy on this... I'm really impressed. The new stuff so far seems like a breath of fresh air where Zope internals are concerned. Kudos!

5 6

Open Letters and Zope 3
by Shane Hathaway 04 Dec '01

04 Dec '01

Folks, There is a lot of exciting development happening in Zope 3, which is open to the public in CVS, and it's really an answer to many of the concerns raised in the "open letters" in the past few days. Here are some of the things happening: - The structure of the Python packages has been redone. It will be much easier to see which packages can be used independently of Zope and which are meant for the Zope application. (There are many packages that can be separated already, but it's not easy to figure out.) - The new component architecture is having a very positive impact. Deep multiple inheritance is a thing of the past. The Python code is free of Zope framework clutter, besides occasional ZODB details. - There are interfaces for everything from authorization to folders, so the API is being documented as it is written. - ZPublisher has been refactored significantly and renamed to "Zope.Publisher". No more string exceptions, no more "maybe_webdav" hacks, no more publishing modules. Interfaces exist and more are planned. - The HTTP server has been redone. It is more optimized and there is a cleaner separation of the server (now "Zope.Server") and the publisher, making it easier to create alternate front-ends to the publisher (for speed). There are also tuning options. - There are unit tests for *everything*. - We're using page templates instead of DTML. I invite everyone to check out Zope 3X right away. But before you do, read carefully: We are first creating "Zope 3X", a version of Zope that is not compatible with Zope 2. We are taking off the shackles and blazing forward, applying the lessons we learned from Zope 2 and CMF. Soon we will create "Zope 3". Zope 3 will add Zope 2 backward compatibility. MINI-FAQ ======== Q: What is Zope 3X? A: Zope 3X is Zope rebuilt from the ground up, applying the lessons learned from Zope 2 and CMF. Q: What is Zope 3? A: Zope 3 is Zope 3X plus compatibility with Zope 2 products. Q: Will Zope 3X be compatible with Zope 2 products? A: No. Q: Will Zope 3 be compatible with Zope 2 products? A: Yes. Q: Will Zope 3X support DTML? A: Probably not. Q: Will Zope 3 support DTML? A: Yes. Q: Will Zope 3X be compatible with CMF? A: No. Q: Will Zope 3 be compatible with CMF? A: Very likely, but a lot of the CMF ideas will be folded directly into Zope 3. You might not need CMF anymore. Q: Are Zope 3X and Zope 3 licensed under the new GPL-compatible ZPL 2.0? A: Yes. Q: Why is Zope Corp. doing all this rearchitecting when Zope really needs feature XX? A: To make it easier for you, the developer. We make the flour, you make the cake. (Zope corp. will create major components also, but the best way to expand Zope is to empower developers.) Q: What is the component architecture? A: It's similar to other component architectures in that it lets you fit small pieces of functionality together. While Zope 2 has many parts welded together with inheritance, Zope 3 will let you take things apart and put them together like legos. See: http://dev.zope.org/Wikis/DevSite/Projects/ComponentArchitecture/VisionStat… Q: How hard will it be to migrate a product to the component architecture? A: There are patterns emerging that should make it straightforward and much easier than starting from scratch. Q: Is I18N in the plans? A: Yes. It is time to start planning for internationalization. If this is your strength, download and get to know Zope 3X and the component architecture wiki, get involved in the community, and please help! Q: How can I help? A: If you're interested in helping and you have time, educate yourself on the component architecture and Zope 3X then volunteer to assist in your particular area of expertise. Q: Is there a tutorial? A: Yes! Look at the /Docs directory in CVS. Note that it's still in development. Q: When will Zope 3 be ready? A: I don't really know, but it's moving forward quickly. INSTRUCTIONS ============ To check out Zope 3X from CVS: cvs -d :pserver:cvs.zope.org:/cvs-repository co -r Zope-3x-branch Zope3 To check out the tutorial: cvs -d :pserver:cvs.zope.org:/cvs-repository co -d Tutorial \ /Docs/ZopeComponentArchitecture/PythonProgrammerTutorial Zope 3X requires Python 2.2b2. To compile the extensions, run "python2.2 stupid_build.py". To start the HTTP server on port 8080, "python2.2 z3.py" (it's very barebones right now; all the meat is in the code.) To run all unit tests in /bin/bash (over 250 of them!): PYTHONPATH=lib/python python2.2 utilities/unittestgui \ Zope.Testing.allZopeTests Again, this is all quite exciting and I hope you can join the action. Shane

12 15

Zope 2.3 and MySQL problems
by Radu Buzea 04 Dec '01

04 Dec '01

I have a problem with a Zope 2.3.0 (source release, Python 1.5.2 [GCC 2.96 20000731 (experimental)]) on Linux and MySQL. I'm using ZMySQLDA to connect to a MySQL database. I use a single database table (witch has over 3500 records right now). There are over 1000 records posted every day. The server is an AMD at 250 Mhz with 64 MB RAM. This server was on-line since April 2001 without any problems but for 3 days ago, when I started to use the MySQL database, the server stops sometimes (crash!!!). Anybody can give me some suggestions ore some explanations. What can be wrong? Thanks! Radu Buzea (radu(a)rospotline.com)

2 1

Searching
by Dirk Datzert 04 Dec '01

04 Dec '01

Hi, is there anybody how knows a product which combines the open-source search-engine htdig with zope ? Dirk

1 0