Paolo, Thanks for all your help.
We were preparing for a customer demo, hence my delayed response. I did get LARQ and build it successfuly. Unless I am doing something wrong the problem is that there is no "stripped down" arq and it seems that the classloader picks up the larq classes from the arq jar versus the larq jar, I created and bundled with my project. Am I missing something or should I just wait for the LARQ-less arq jar? Please do not hesitate to contact me if you need additional information. Thank you. Regards, Nikolaos Abatzis New River Systems Corporation 1890 Preston White Drive, Suite 240 Reston, VA 20191 ________________________________________ From: Paolo Castagna [[email protected]] Sent: Wednesday, March 16, 2011 3:00 PM To: [email protected] Subject: Re: ARQ + Lucene Nikolaos Abatzis wrote: > All: > > I just did a check on the 2.6.4 Jena bundle and I see that even the latest > ARQ (2.8.7) seems to use the lucene-core-2.3.1. > > Are there any plans to port ARQ so that it uses a more recent version of > Lucene. 2.3.1 is kind of ancient, current in the 2.x series is 2.9.4 > and my understanding is that it uses Java 1.4. There is also a 3.x series > that uses Java 1.5. per the lucene docs, the latest versions offer > significant enhancements and have fixed memory leaks, etc... "Lucene 2.3.1 is kind of ancient", I agree. :-) Yes, the plan is to extract LARQ as a separate module (which will depend on ARQ). You can look here: https://jena.svn.sourceforge.net/svnroot/jena/LARQ/trunk/ As you can see, it is using Lucene 3.0.3 (and it is backward compatible with 2.9.x ... as just a drop-in replacement if somebody needs an older version of Lucene). We are currently waiting the "all clear" to move source code from SourceForge to the Apache SVN repository. Once we do that, little changes are necessary in the ARQ source code to dynamically look for LARQ and wiring it in (if present in the class path). The LARQ separate module has already a few improvements (i.e. avoiding duplicates with subsequents updates and removals). Still pending: - a way to support RDF Datasets in addition to Jena Models and proper assemblers. - a tool to make it easier to build Lucene indexes pointing to a TDB location. - (at one point, I'd like to see LARQ in Fuseki ;-)) Later: - Solr? https://github.com/castagna/SARQ - ElasticSearch? https://github.com/castagna/EARQ To checkout LARQ and compile it type: svn co https://jena.svn.sourceforge.net/svnroot/jena/LARQ/trunk/ LARQ cd LARQ mvn package Let me know if you have problems, Paolo > > Please do not hesitate to contact me if you need additional information. > Thank you. > > Regards, > > Nikolaos Abatzis > New River Systems Corporation > 1890 Preston White Drive, Suite 240 > Reston, VA 20191
