Dave Beckett - Journalblog
Sun Apr 24 04:19:22 EDT 2011
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Rasqal 0.9.21 and SPARQL 1.1 Query aggregation - Rasqal 0.9.21 was just released on Saturday 2010-12-04 (announcement) containing the following new features: Updated to handle aggregate expression execution as defined by the SPARQL 1.1 Query W3C working draft of 14 October 2010 Executes grouping of results: GROUP BY Executes aggregate expressions: AVG, COUNT, GROUP_CONCAT, MAX, MIN, SAMPLE, SUM Executes filtering of aggregate expressions: [...]

End of life of Raptor V1. End of support for Raptor V1 in Rasqal and librdf - Raptor V1 was last released in January 2010 and Raptor V2 seems pretty stable and working. I am therefore announcing that from early 2011, Raptor V2 will replace Raptor V1 and be a requirement for Rasqal and librdf. End of life timeline Now Raptor V1 last release remains 1.4.21 of 2010-01-30 Raptor V2 release 2.0.0 [...]

Writing an RDF query engine. Twice - “You’ll end up writing a database” said Dan Brickley prophetically in early 2000. He was of course, correct. What started as an RDF/XML parser and a BerkeleyDB-based triple store and API, ended up as a much more complex system that I named Redland with the librdf API. It does indeed have persistence, transactions (when using [...]

Redland librdf 1.0.11 released - I have just released Redland librdf library version 1.0.11 which has been in progress for some time, delayed by the large amount of work to get out Raptor V2 as well as initial SPARQL 1.1 draft work for Rasqal 0.9.20. The main features in this release are as follows: Virtuoso storage backend querying now fully [...]

Leaving Yahoo – Joining Digg - I’m heading to a new adventure at Digg in San Francisco to be a lead software engineer working on APIs and syndication. I’ve been at Yahoo! nearly 5 years so it is both a happy and sad time for me, and I wish all the excellent people I worked with the best of luck in [...]

Rasqal RDF Query Library 0.9.20 - I just released a new version of my Rasqal RDF Query Library for two main new features: Support more of the new W3C SPARQL working drafts of 1 June 2010 for SPARQL 1.1 Query and SPARQL 1.1 Update. Support building with Raptor V2 API as well as Raptor V1 API.. The main change is to [...]

Raptor RDF Syntax Library V2 beta 1 - Today I released the first beta version of Raptor 2. This is the culmination of about 9 months work refactoring the Raptor 1 codebase. In hindsight, I should have done this years ago, but I knew it would be a lot of work, and it was. The reasoning behind doing this is multi-fold, but basically [...]

Happy 10th Birthday Redland - Redland‘s 10th year source code commit birthday is today 28th Jun at 9:05am PST – the first commit was Wed Jun 28 17:04:57 2000 UTC. Happy 10th Birthday! Please celebrate with tea and cake. (New releases soon, but it’s nice and sunny here in California, it’s very distracting.)

Command Line Semantic Web with Redland - I gave a ‘lightning’ talk (actually in about 15 mins) Command Line Semantic Web with Redland on 15th March 2010 at the Semantic Web Austin Meetup during SXSW at Texas Coworking, Austin, TX, USA. Today I recorded it as a screencast and put it online. The embedded Vimeo version is below (best to view full [...]

Flickcurl C API to Flickr 1.17 Released - In the last few days I released Version 1.17 of my Flickcurl C library interface to the Flickr API. It has new complete support for three new recent sets of new APIs. Added 15 new functions for the new Stats API calls announced 2010-03-03: flickr.stats.getCollectionDomains, flickr.stats.getCollectionReferrers, flickr.stats.getCollectionStats, flickr.stats.getPhotoDomains, flickr.stats.getPhotoReferrers, flickr.stats.getPhotosetDomains, flickr.stats.getPhotosetReferrers, flickr.stats.getPhotosetStats, flickr.stats.getPhotoStats, flickr.stats.getPhotostreamDomains, flickr.stats.getPhotostreamReferrers, [...]