On Wed, Feb 10, 2010 at 15:45, Guo Du <[email protected]> wrote: > Just curious that is there any performance difference between query > languages: xpath, sql, JCR-SQL2, JCR-JQOM?
There shouldn't be any notable difference, as they are all transformed into a lucene query that runs on the lucene index. Small differences could be in parsing times, but I doubt they have an impact. Also, some query languages offer features that others don't have. Most notably, the new JCR-SQL2 / JQOM allow for joins, which could be a bit slower than not using a join (but I have no experience with that yet to judge it). But that's a bit like comparing apples with oranges ;-) Regards, Alex -- Alexander Klimetschek [email protected]
