You are right. Since there are C++ and now C ports of Lucene, it would be interesting to integrate them directly with DBs, so that the RDBMS full-text search under the hood is actually powered by one of the Lucene ports.
Otis --- David Spencer <[EMAIL PROTECTED]> wrote: > Otis Gospodnetic wrote: > > > The most obvious answer is that the full-text indexing features of > > RDBMS's are not as good (as fast) as Lucene. MySQL, PostgreSQL, > > Oracle, MS SQL Server etc. all have full-text indexing/searching > > features, > > but I always hear people complaining about the speed. > > Yeah, but in theory, in the ideal world :), it should't be any slower > - > there's no magic Lucene has that DB's don't. And the big advantage > of > it being embedded in the DB is the index can always be up to date, > just > as if you had Lucene updating the index based on a trigger. You don't > > need any separate cron job to periodically update the index. > > But this brings up - has anyone run Lucene off a database trigger or > are > triggers known to be slow and bad for this use? > > > A > > person from a well-known online bookseller told me recently that > Lucene > > was about 10x faster that MySQL for full-text searching, and I am > > currently helping someone get away from MySQL and into Lucene for > > performance reasons. > > > > Otis > > > > > > > > > > --- "Steven J. Owens" <[EMAIL PROTECTED]> wrote: > > > > > >>Hi, > >> > >> I was rambling to some friends about an idea to build a > >>cache-aware JDBC driver wrapper, to make it easier to keep a lucene > >>index of a database up to date. > >> > >> They asked me a question that I have to take seriously, which > is > >>that most RDBMSes provide some built-in fulltext searching - > >>postgres, > >>mysql, even oracle - why not use that instead of adding another > layer > >>of caching? > >> > >> I have to take this question seriously, especially since it > >>reminds me a lot of what Doug has often said to folks contemplating > >>doing similar things (caching query results, etc) with Lucene. > >> > >> Has anybody done some serious investigation into this, and > could > >>summarize the pros and cons? > >> > >>-- > >>Steven J. Owens > >>[EMAIL PROTECTED] > >> > >>"I'm going to make broad, sweeping generalizations and strong, > >> declarative statements, because otherwise I'll be here all night > and > >> this document will be four times longer and much less fun to read. > >> Take it all with a grain of salt." - http://darksleep.com/notablog > >> > >> > >>--------------------------------------------------------------------- > >>To unsubscribe, e-mail: [EMAIL PROTECTED] > >>For additional commands, e-mail: > [EMAIL PROTECTED] > >> > >> > > > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: > [EMAIL PROTECTED] > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
