Just a few words to announce a new release (http://sourceforge.net/projects/dbprism/files/odi/3.0.2.1.0/) of Oracle Lucene Domain Index (http://docs.google.com/View?docid=ddgw7sjp_569gf8c7cd8), this zip is valid for 10g and 11g database version (10g using back-ported classes from 1.5 to 1.4) This release is compiled using Lucene 3.0.2 version and incorporates a set of new features added, here the list: * Added a long awaited functionality, a parallel/shared/slave search process used during a start-fetch-close and CountHits function * Added lfreqterms ancillary operator returning the freq terms array of rows visited * Added lsimilarity ancillary operator returning a computed Levenshtein distance of the row visited * Added a ldidyoumean pipeline table function using DidYouMean.indexDictionary storage * Added test using SQLUnit The bigger addition is the Parallel-Shared-Slave search process, this architectural change was in my to-do list for a long time and finally I added in this release :) The idea behind this is to have a new Oracle process started by the DBMS_SCHEDULER sub-system during the database startup process and stopped immediately before shutdown. Now this process is responsible for implementing the ODCI methods start-fetch-close/count-hit on behalf of the client process (process associated to an specific user session) which connect to the shared-slave process by using RMI. With this new architecture we have two principal benefits: * Reduce memory consumption * Increase Lucene Cache Hits Less memory consumption because the internal OJVM implementation is attached to a client session, so the Java space used by Lucene structures is isolated and independent from another concurrent session, now all Lucene memory structures used during index scan process are created in a shared process and then not replicated. Also if one session submits a Lucene search, this search is cached for subsequent queries, all subsequent queries coming from the same client session or any other which are associated to the same index and with the same Query string implies a hit. For those who are in the SFO area, I'll be there next week during the OOW10 :) Marcelo.
-- Marcelo F. Ochoa http://marceloochoa.blogspot.com/ http://mochoa.sites.exa.unicen.edu.ar/ ______________ Want to integrate Lucene and Oracle? http://marceloochoa.blogspot.com/2007/09/running-lucene-inside-your-oracle-jvm.html Is Oracle 11g REST ready? http://marceloochoa.blogspot.com/2008/02/is-oracle-11g-rest-ready.html --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
