It might be different as an actual number, but the relative ranking should not change - since each ID matches only one document, only the user's part of the search can affect the ranking.
Someone else would need to speak as to whether the relative value of the scores will also change, but I can't see this being a problem. The custom collector route also means that paging is handled as normal and doesn't present a problem. If you follow this route, and if the user's valid list of IDs remains constant per user, you will certainly want to cache and index the list of valid IDs. Yours, Moray ------------------------------------- Moray McConnachie Director of IT +44 1865 261 600 Oxford Analytica http://www.oxan.com -----Original Message----- From: Marco Dissel [mailto:marco.dis...@gmail.com] Sent: 27 May 2011 09:14 To: lucene-net-user@lucene.apache.org Subject: Re: [Lucene.Net] search within a list of unique ID's But is the document score not different if i filter the list afterwards with my list of unique ID's? On Fri, May 27, 2011 at 9:45 AM, Moray McConnachie < mmcco...@oxford-analytica.com> wrote: > If the list of IDs could be very long, then the search string could > become horrendously long, and you might also have to look at the > maximum clauses Lucene permits in a query. > > If user's search is reasonably restrictive, you might do better > running the user's search then filtering the list of returned results > according to your list of IDs. There are numerous ways of achieving > this, I personally like the custom collector because you can add more > complicated logic later if you want. > > Yours, > Moray > > > ------------------------------------- > Moray McConnachie > Director of IT +44 1865 261 600 > Oxford Analytica http://www.oxan.com > > -----Original Message----- > From: digy digy [mailto:digyd...@gmail.com] > Sent: 27 May 2011 08:19 > To: lucene-net-user@lucene.apache.org > Subject: Re: [Lucene.Net] search within a list of unique ID's > > Creation of SimplefacetedSearch is slow. Therefore it should only be > created when a new reader is opened (or reopened). > DIGY > > On Fri, May 27, 2011 at 10:02 AM, Marco Dissel > <marco.dis...@gmail.com>wrote: > > > Our index contains documents with an unique ID (long number) > > corresponding to a record in SQL database. I want to start a lucene > > search within a list of ID's returned from a SQL resultset. > > > > IDataReader reader = cmd.Execute("select ID from ...") long[] ids = > > GetID's(reader); string search = Join(ids) /// results in (ID:1 OR > > ID:2 OR ID:3) search += " AND (" + <searchstring entered by user> + > > ")"; IndexSearcher searcher = new IndexSearcher(_Reader); Query > > query = new Lucene.Net.QueryParsers.QueryParser(,,,, search); > > TopDocs docs = > > > searcher.Search(query, 1000000); > > > > Is this the way to go? > > > > Thanks > > > > --------------------------------------------------------- > Disclaimer > > This message and any attachments are confidential and/or privileged. > If this has been sent to you in error, please do not use, retain or > disclose them, and contact the sender as soon as possible. > > Oxford Analytica Ltd > Registered in England: No. 1196703 > 5 Alfred Street, Oxford > United Kingdom, OX1 4EH > --------------------------------------------------------- > > --------------------------------------------------------- Disclaimer This message and any attachments are confidential and/or privileged. If this has been sent to you in error, please do not use, retain or disclose them, and contact the sender as soon as possible. Oxford Analytica Ltd Registered in England: No. 1196703 5 Alfred Street, Oxford United Kingdom, OX1 4EH ---------------------------------------------------------
