September 2002 - Zope-Announce

[ANN] TextIndexNG 1.05 Beta 1 released
by Andreas Jung 14 Sep '02

14 Sep '02

After a longer period of time, I am pleased to announce the release of TextIndexNG 1.05 beta1 TextIndexNG is a pluggable index for the ZCatalog that enhances the fulltext indexing capabilities of Zope by providing the following features: * support for document converters (HTML, PDF, WinWord, PowerPoint, Postscript). Custom converters can be easily added * stemmer support for 12 languages * optional support for right truncation * similarity search (soundex, metaphone support) (for english) * NEAR search * phrase search * pluggable query parsers (two parsers included) * stop words support * new test tab for interactive testing * faster than Zopes old TextIndex * full unicode support (new) * normalization support (new) * new similarity algorithm: double metaphone (new) * new TXNGSplitter * new vocabulary browser Changes: * added full wildcard support for CLLexicon and StandardLexicon * rewrote Stemmer module (now fully unicode compliant) * unittests code cleanup * query evaluation refactored * Parser API changed to return a parse tree instead of a Python expression * new parse tree evaluator added * PyQueryParser: now accepts a minus sign as prefix of a word to indicate NOT. Searching for "foo -bar" will be recognized as "foo AND NOT bar". In addition the syntax for "ANDNOT" has been changed to "AND NOT". * stopword handling through registry * added double metaphone algorithm for similarity search * Splitter handling changed: The new TXNGSplitter has been added. It supports both strings and unicode strings and supercedes the functionalities of all other existing splitters for Zope. TXNGSplitter is the only splitter that will be used by TextIndexNG. The "index numbers" options has been removed both from the splitter and the ZMI. In addition the splitter now accepts an optional set of characters that are recognized to be valid inside words. This allows you to index common words like "C++" or "python-22.lib" when you specify "+.-" as valid word characters. * Python C extensions compile now under Windows (Binary distribution will be available for Windows) * normalizer support added * full unicode support * the add form for TextIndexNG now uses the registries to obtain informations about registered componenents instead of hardcoded values. * fixed problem with changed API of the Interface packages (backport from Zope 3 to Zope 2.6) * added vocabulary browser * lots of code cleanup * bug fixes... * add statistics tab to ZMI * fixed serious bug in TXNGSplitter due to missing encoding parameter * minor ZMI adjustments * using converters no longer raises an exception when a converter could not be found for the mime-type of a document Requirements: * Zope 2.5 or Zope CVS trunk checkout Documentation: * http://www.zope.org/Members/ajung/TextIndexNG/wiki Download: * http://www.zope.org/Members/ajung/TextIndexNG/ or * http://sourceforge.net/project/showfiles.php?group_id=50052 --------------------------------------------------------------------- - Andreas Jung http://www.andreas-jung.com - - EMail: andreas at andreas-jung.com - - "Life is too short to (re)write parsers" - ---------------------------------------------------------------------

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ZODB 3.1b1 released
by Jeremy Hylton 12 Sep '02

12 Sep '02

I am pleased to announce the first beta release of ZODB3, formerly known as StandaloneZODB. ZODB is an object database for Python that provides transactional persistence while requiring few, if any, changes to application logic. You can get a source release from http://www.zope.org/Products/StandaloneZODB Windows users will need a compiler to build C extensions. I'd be happy to accept a binary installer for Windows, if a user is willing to contribute it. The components you get with the ZODB3 release are as follows: - Core ZODB, including the persistence machinery - Standard storages such as FileStorage - Supporting modules such as ExtensionClass - The persistent BTrees modules - ZEO - Experimental Berkeley storages - Some documentation <wink> The beta release contains roughly the same version of ZODB that will be included in Zope 2.6. The two releases are not directly coordinated, so there may be some subtle differences. Many people have contributed to ZODB3. Special thanks to Toby Dickenson for the new ZODB Connection cache. Many people at Zope Corp. have contributed code and tested unreleased versions. The NEWS.txt file contains a list of the major changes since the StandaloneZODB 1.0 release in February. You can also find this list at http://www.zope.org/Products/StandaloneZODB/NEWS Jeremy

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Persistent Translation Service 0.1: i18n your ZPTs now!
by Florent Guillaume 11 Sep '02

11 Sep '02

Announcing PersistentTranslationService 0.1: This first alpha release of PersistentTranslationService allows you to have fully functional internationalization from Page Templates using the standardized i18n tags. PersistentTranslationService is configurable and can redirect different i18n domains to different message catalogs. PersistentTranslationService currently uses Localizer as its message catalog backend, and Zope 2.7's implementation of i18n tags. It needs a Unicode-aware Zope (Zope-2_6-branch from CVS is recommended). See http://www.zope.org/Members/efge/PersistentTranslationService for more information. Florent -- Florent Guillaume, Nuxeo (Paris, France) +33 1 40 33 79 87 http://nuxeo.com mailto:fg@nuxeo.com

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ZEO cache analysis tools prerelease
by Guido van Rossum 10 Sep '02

10 Sep '02

* Do you want to know if your ZEO client cache is configured properly? * Are you using ZEO but you didn't know it had a client cache? * Do you want to contribute towards a better ZEO client cache design? If you answered yes at least once, read on! Jeremy is working on a new ZEO 2 release; the first beta was released two weeks ago. For that release I have written cache instrumentation code that lets you review the effectiveness of the ZEO client cache. There's also a version of the instrumented cache for ZEO 1. I don't plan to work on it more before the ZEO 2 release (unless I receive bug reports). All code is available *now* from the ZODB3 CVS tree: http://cvs.zope.org/ZODB3/. In addition to adding instrumentation, some bugs affecting performance but not correctness of the cache have been fixed in the instrumented cache code. The instrumentation is controlled by an environment variable so you can leave the new cache code in place after turning off the instrumentation. I'm inviting everyone who is running ZEO seriously to install the cache instrumentation code, run it for a while, and send me the resulting trace file. (The trace files contain no privacy-sensitive data, so you don't have to worry about revealing anything about your site.) The trace files will be used as input to a simulation of a new cache design. The only way to validate a cache design is to run experiments, and trace files are the most reliable way to run such experiments. The more trace files I receive the better. The larger they are the better (traces of several days of uninterrupted service are ideal). I've got the disk space to burn. I should mention that I'm confident that the instrumentated cache works correctly: we've been collecting traces without problems at a Zope Corp customer site since last Wednesday. To enable the cache instrumentation, you need to replace a single file in the ZEO package used by the Zope application, set an environment variable, and restart the Zope application. The file you need to replace is named ClientCache.py. Here are the URLs: For ZEO 1: http://cvs.zope.org/ZODB3/ZEO1/ClientCache.py?rev=HEAD For ZEO 2: http://cvs.zope.org/ZODB3/ZEO/ClientCache.py?rev=HEAD Make sure to get the file for the ZEO version you are using! Details about enabling the tracing can be found here: http://cvs.zope.org/ZODB3/ZEO/README.txt?rev=HEAD If you want to play with the statistics or simulation programs yourself, get stats.py and simul.py from the ZEO directory: http://cvs.zope.org/ZODB3/ZEO/ These work with trace files produced by either version of the instrumented cache code. Once you have one or more trace files for me, the best way to get it to me is probably to place a gzipped copy on an FTP or HTTP server from which I can download it and mail me the URL. As I said, these trace files contain no sensitive data. If you still prefer a different approach, email me and we'll figure something out. --Guido van Rossum (home page: http://www.python.org/~guido/)

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IngeniWeb release MonZope !!!
by Olivier DECKMYN - IngeniWeb 09 Sep '02

09 Sep '02

Hi all ! IngeniWeb, french leader of Zope hosting and consulting, is proud to announce the release of version 1.0 of its MonZope bundle. MonZope is a win32 bundle for the end-user, including Zope 2.5.1, IngeniSite P.E. (End-User oriented CMS System) and MonZope.com a free redirection system. With this toolset, you can host a Zope personal website on your own ADSL/Cable internet line. Full documentation is provided. Everything is Free. French version only for now. Visit and download package on www.monzope.com Cheers, -- Olivier DECKMYN INGENIWEB (TM) - SARL 50000 Euros - RC B 438 725 632 2 cours du 14 Juillet - 78300 Poissy France - +331 300 601 41 web : www.ingeniweb.com - « les Services Web Ingénieux » PGP : http://www.ingeniweb.com/keys/olivier.deckmyn

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ANNOUNCE: Pound - reverse proxy and load balancer - v0.10
by Robert Segall 05 Sep '02

05 Sep '02

This is to announce the release of Pound v0.10. New in this release: - added required/disallowed headers matching in groups - configurable cyphers/strength for SSL - retry request on discovering dead back-end - configurable logging facility - added configure script - fixed bug in multiple requests per connection (GROUP matching) - (re)fixed missing '~' in URL matching - fixed bug in reading certificate/private-key file What is Pound (from the Web page) - a reverse-proxy: it passes requests from client browsers to one or more back-end servers. - a load balancer: it will distribute the requests from the client browsers among several back-end servers, while keeping session information. - an SSL wrapper: Pound will decrypt HTTPS requests from client browsers and pass them as plain HTTP to the back-end browsers. - an HTTP/HTTPS sanitizer: Pound will verify requests for correctness and accept only well-formed ones. - an HTTP/1.1 to 1.0 proxy. - a fail-over-server: should a back-end server fail, Pound will take note of the fact and stop passing requests to it until it recovers. - a request redirector - it will pass client requests to separate groups of servers, based on required URL and the presence or absence of headers (pattern matching) Pound was specifically developed to serve as a front-end for multiple instances of Zope running on top of a common ZEO storage, but can be used with any other web server. A patch for the Python source of z2.py is available as part of the distribution to allow using Pound's SSL capabilities. Pound is currently in use in several mdeium to large volume sites and seems to be holding up quite well. The speed is well superior to other, equivalent solutions, the configuration is much simpler and the necessary resources (CPU, RAM, disk) are much, much lower. For further information, download, etc. please see http://www.apsis.ch/pound The software is at version 0.10 (beta quality). Further testing (especially under heavy loads), improvements and suggestions are welcome. Pound is distributed under the GPL. Enjoy and let me know how it works for you. -- Robert Segall Apsis GmbH Postfach, Uetikon am See, CH-8707 Tel: +41-1-920 4904

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Plone Windows Installer
by Andy McKay 05 Sep '02

05 Sep '02

Tired of trying to get all the right bits for Plone installed or want any easy way to install Plone 1.0 Alpha 4 and try it out? Check out the Windows Installer, in one simple installer (for Windows only) you will have a working Plone with all the goodies including PIL, Reportlab, External Editor and the Zope Controller (customised for Plone). More information: http://www.agmweb.ca/plone -- Andy McKay Agmweb Consulting http://www.agmweb.ca

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[ANNOUNCE] emacs html helper mode with dtml support
by de ZORZI Frederic 03 Sep '02

03 Sep '02

http://www.zope.org/Members/fredz/html-helper-mode Here you can find a modified version of html-helper-mode.el (3.0.4jolly) for emacs who supports dtml tags : - Auto-indentation (with a little help :)) - Shortcuts / Completion - Tag regions I'd be pleased to receive feedback Fredz.

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