Hi Mike, I looked at in javadoc:
http://lucene.apache.org/java/2_4_1/api/core/org/apache/lucene/search/Searcher.html#search(org.apache.lucene.search.Query,%20org.apache.lucene.search.Filter,%20int) and in trunk version of Lucene and I did not find your NOTE. Can you confirm? Thanks! > Date: Tue, 23 Jun 2009 06:49:00 -0400 > Subject: Re: Optimization of memory usage in PriorityQueue > From: luc...@mikemccandless.com > To: java-dev@lucene.apache.org > > OK I've added a NOTE to the javadocs for this... > > Mike > > On Mon, Jun 22, 2009 at 8:57 PM, Claudio .<spcicli...@hotmail.com> wrote: > >>> I think the common use case of TopScoreDocCollector is to request 10 > >>> results, then ask for 20 and so on. You ask for N results because you want > >>> to display them, or manipulate them in some way. > > > >>> However, if we do add this to the base PQ, it means an extra check for > >>> every put() call. We've tried very hard recently to remove 'if' checks in > >>> TopScoreDocCollector and TopFieldCollector, so adding one back does not > >>> seem > >>> very appealing to me, especially since I IMO the use case of requesting > >>> 10K > >>> results w/o knowing first there are more or so that match the query, is > >>> not > >>> so common. > > > > Hi serera, > > > > Ok, I understood. > > I think the Lucene team could add a warning in the javadoc, warning that > > will be created internally an Object[] with the size of top. > > I thought that the Lucene would create internally an array with the number > > of results. > > The users can set high values of top (like me) without knowing that they are > > wasting memory. > > Thanks! > > > > ________________________________ > > check out the rest of the Windows Live™. More than mail–Windows Live™ goes > > way beyond your inbox. More than messages > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-dev-h...@lucene.apache.org > _________________________________________________________________ Show them the way! Add maps and directions to your party invites. http://www.microsoft.com/windows/windowslive/products/events.aspx
