June 2003 - Zope-Announce

DBTab, CookieCrumbler, and TCPWatch updated
by Shane Hathaway 16 Jun '03

16 Jun '03

New releases of DBTab, CookieCrumbler, and TCPWatch are available. DBTab 1.2.1: Fixed a race condition, added unit tests, and added support for DemoStorage layering. CookieCrumbler 1.0: Added unit tests, fixed bugs, and provided an option for directing unauthorized but authenticated users to a different page than the login page. TCPWatch 1.2: Using the -r option, you can now log TCP sessions to a file. Also moved to distutils-based installation. Thanks to Tres Seaver. Shane

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New interview at EuroPython2003
by Tom Deprez 16 Jun '03

16 Jun '03

EuroPython's third interview! is available Today _Marc-Andre Lemburg_ has the word: Read it at http://www.europython.org/other/interviews/entries/marcandre_lemburg All the people who use the mx Extensions for Python, should have heard about Marc-Andre. Regards, EuroPython

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EuroPython 2003
by Tom Deprez 16 Jun '03

16 Jun '03

Hi all, The EuroPython 2003 brochure is ready and available for download at: http://www.europython.org/other/brochure Interested in the countries represented at EuroPython? Here is a list: http://www.europython.org/news/newsEntries/20030616 See you within 8 days! Regards, EuroPython

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EuroPython news
by Tom Deprez 16 Jun '03

16 Jun '03

Hi all, The EuroPython 2003 brochure is ready and available for download at: http://www.europython.org/other/brochure Interested in the countries represented at EuroPython? Here is a list: Spain Belgium Germany Austria United Kingdom Tunisia Portugal Switzerland Ireland Sweden United States France Lithuania Finland Poland Denmark Czech Republic Italy Netherlands Canada See you within 8 days! Regards, EuroPython

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ZODB 3.1.2b2 released
by Jeremy Hylton 13 Jun '03

13 Jun '03

We have released ZODB 3.1.2b2 available from the usual place: http://www.zope.org/Products/ZODB3.1 This release includes several critical bug fixes for ZEO. The bugs are more likely to affect sites that see a lot of read conflicts (resolved or unresolved). The bugs can cause data loss or corruption. I would strongly advise ZEO users to consider upgrading. This release has seen more internal stress testing that normal and should be fairly stable for production use. I hope to get a final release out as soon as possible. The release notes (below) describe the fixes in more detail. Jeremy What's new in ZODB3 3.1.2 beta 2? ================================= Fixed critical race conditions in ZEO's cache consistency code that could cause invalidations to be lost or stale data to be written to the cache. These bugs can lead to data loss or data corruption. These bugs are relatively unlikely to be provoked in sites with few conflicts, but the possibility of failure existed any time an object was loaded and stored concurrently. Fixed a bug in conflict resolution that failed to ghostify an object if it was involved in a conflict. (This code may be redundant, but it has been fixed regardless.) The ZEO server was fixed so that it does not perform any I/O until all of a transactions' invalidations are queued. If it performs I/O in the middle of sending invalidations, it would be possible to overlap a load from a client with the invalidation being sent to it. The ZEO cache now handles invalidations atomically. This is the same sort of bug that is described in the 3.1.2b1 section below, but it affects the ZEO cache. Fixed several serious bugs in fsrecover that caused it to fail catastrophically in certain cases because it thought it had found a checkpoint (status "c") record when it was in the middle of the file.

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Silva 0.9.2 beta released
by Jan-Wijbrand Kolman 12 Jun '03

12 Jun '03

Hello, Infrae is happy to release the beta version of the upcoming Silva 0.9.2. Silva is a web application (Zope based) for authoring and serving publications for the web, paper, and other media. Content is stored in clean and future-proof formats, independent of layout and presentation, suitable for use in multiple contexts. For more information on Silva see: http://www.infrae.com/products/silva http://www.zope.org/Members/infrae/Silva This is a feature complete beta. However, being a beta, it most probably has bugs. Silva 0.9.2 will provide extensive new functionality (see also the HISTORY.txt file included in the Silva Product) such as: * Thoroughly revised user interface. * Completely new, flexible metadata architecture. * All text - including metadata - is stored as unicode. * Everything is now indexed using the Zope catalog. * Increased performance, both for public views and for the Silva edit screens. We do encourage testing this beta! It is strongly advised *not* to use this version for production sites though. Due to changes in the content structure this version will not work with existing Silva content. This beta version - as will the final release - includes a content upgrade script. The upgrade script needs testing on 'real world' content. If you do upgrade existing content for testing this procedure, please first make a backup! Please report any bugs and other issues to Infrae and discuss this version on the Silva mailinglists: silva-general(a)lists.sourceforge.net silva-dev(a)lists.infrae.com The beta version of the Silva Product can be downloaded at: http://www.zope.org/Members/infrae/Silva/Silva-0.9.2b.tgz A tarball including Silva 0.9.2b and all its dependencies can be downloaded here: http://www.zope.org/Members/infrae/Silva/Silva-0.9.2b-all-products.tgz regards, jw -- Jan-Wijbrand Kolman jw(a)infrae.com

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EuroPython 2003 only 2 weeks ahead..
by Tom Deprez 10 Jun '03

10 Jun '03

Hi all, We're counting the last days before EuroPython 2003. Don't miss this event! Have a look at http://www.europython.org Swift payment registration will be closed on 12/06/2003. Creditcard payment however, will stay a little longer available. Regards, EuroPython --- European Python and Zope Conference 2003 (EuroPython 2003) June 25-27, 2003 Charleroi, Belgium http://www.europython.org Only once a year do European software developers have the opportunity to learn about Python, the fastest growing, sophisticated open source application development platform. The second annual Europython conference, being held this year in Charleroi, Belgium on June 25-27, 2003, is also an opportunity to meet with fellow developers and exchange ideas and experiences. With keynote speeches that include the creator of Python; a renowned trainer and mentor in the C++ world; as well as major developer activities, the conference promises to be a breakthrough event for open software in Europe. The EuroPython conference is the premiere venue for meeting Python and Zope developers from Europe and beyond. As one of the first community-organized Python and Zope conferences, the EuroPython Conference delivers the atmosphere and information developers want. Hundreds of new and experienced developers attending the conference will see a full program, including: Keynote by Guido van Rossum, creator of Python. He created Python in the early 1990s at CWI in Amsterdam (the National Research Institute for Mathematics and Computer Science in the Netherlands). He is still actively involved in the development of the language. In 1995 he moved to the US where he now works for Zope Corporation as Director of PythonLabs, the core Python development group hosted by the same company. Keynote by Francis Glassborow, a renowned trainer and mentor in the C++ world. Over 8 years as Chairman of the Association of C & C++ Users, he built up a flourishing organisation with active involvement in ISO language standards, publishes several journals, and has a strong community embracing the authors and leading lights of C, C++, C#, Java and now Python. The conference program has over 70 presentations and tutorials in 5 tracks, including Python In Business, Python Frameworks, Python Language, Python In Science and Industry, and Zope. The program contains tutorials, presentations, lightning talks, and "birds of a feather" gatherings. Additional events include a PyPy and Zope3 sprint. EuroPython 2003 will be held in Charleroi, Belgium, a city close to Brussels. Space is filling quickly, so early registration at the EuroPython website (http://www.europython.org) is encouraged. Student discounts are available. The EuroPython 2003 conference continues this year's series of open source developer events in Europe, including FOSDEM and Python-UK, which each attracted thousands of attendees. Like these conferences, EuroPython 2003 is organized by a volunteer group of open source developers. About Python Python is a leading object-oriented open source programming language that runs on all modern platforms. By integrating ease-of-use, clarity in coding, enterprise application connectivity and rapid application design, Python is an ideal programming platform for todays IT challenges. More information, including the Python source code and binaries for Linux and Windows, are available at http://www.python.org. About Zope Zope is a leading open source application server, specializing in content management, portals, and custom applications. Since Zope Corporation introduced Zope as an open source product in 1998, it has become the platform of choice for content publishers, managers and application developers. Zope comes with complete source code, most of which is written in Python. More information, including the Zope source code and binaries for Linux and Windows, are available at http://www.zope.org. Python and Zope are maintained and enhanced in open source fashion by an international community of programmers and companies.

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TextIndexNG 2 Beta 1 released
by Andreas Jung 09 Jun '03

09 Jun '03

I am pleased to announce the release of TextIndexNG 2.0 Beta 1 What's new in TextIndexNG 2.0? - Relevance ranking of search results added. Searches are now ranked using an extended cosine measure. The cosine measure is based on a vector model and calculates the document "score" based on the frequency of the query terms inside the document result set. - Much faster phrase/near search: the old implementation of TextIndexNG had to perform a very expensive job at query time when phrase/near search was performed. Re-using the !WidCode module of !ZCTextIndex made this operation less expensive. - Left-truncation added: TextIndexNG can be configured creation-time time to support left-truncation (means you can search for "*suffix") - optional auto-expansion support: This optional feature also to get better search results when some of the query terms could not be found. The index expands a query term "foo" to "foo*" if there was no hit for "foo". This expansion is currently global for the index. This feature will be available on a per-query basis in a later version. (Auto-expansion will be extended in a later version to search for similiar terms) - improved HTML converter: now using Chris Withers "Strip-o-Gram" module instead of the Strip-Tag-Parser - added converter for text/sgml - Similarity search (soundex, metaphone, doublemetaphone) dropped and replace with a more general approach and language indepedant approach using the Levenshtein distance. - internal code cleanup, more unittests - range searches like "Fi..Foo" - substring searches "*substring*" - reduced conflict errors caused by the lexicon/storage implementation - no longer conflicts with TextIndex V 1 installations Download: http://sourceforge.net/project/showfiles.php?group_id=50052 Project Wiki: http://www.zope.org/Members/ajung/TextIndexNG/

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EuroPython Website Update
by Tom Deprez 09 Jun '03

09 Jun '03

Hi all, We did some re-arangement of the website and added a complete new section to it. I think you all will going to love this one. It contains all practical information when being at Charleroi. We encourage to print it out -before you go to Charleroi- you never know when you need it! We will also put this information in the EuroPython2003 brochure. The new section is called: 'At Charleroi', and the following information is available: General Info: http://www.europython.org/information/generalInfo Transportation: http://www.europython.org/information/transportation Meeting Places: http://www.europython.org/information/meetingPlaces Regards, EuroPython webteam

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RevisionManager 1.3.2 bugfix released
by Philipp von Weitershausen 09 Jun '03

09 Jun '03

I'm pleased to announce another bugfix release of RevisionManager. RevisionManager is a CVS frontend product for Zope. It brings the power of revision controlling to the ZODB. Changes since 1.3: * Improved CVSWrapper's portability targetting Win32 platforms. That means RevisionManager should run on Windows now ("restrictions may apply")! Many thanks to Xie Yan Bo who provided the fix. * Fixed a bug concerning diffs. Thanks again to Xie Yan Bo for reporting and fixing. * Fixed a bug that occurred when adding objects. * The bundled ZopeTree has been updated to version 1.3 If you already have an instance of RevisionManager, please follow the instructions in the INSTALL.txt file, section 4 Upgrading. If you want to make use of the new property synchronization feature in your already existing RevisionManager setup, please read INSTALL.txt, section 5 Properties. You may download RevisionManager: http://www.zope.org/Members/philikon/RevisionManager Philipp

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