Erik, Thanks for the poiner. I am not sure how sort can filter out results. sort will just sort the results right ?
lets say if i had below results http://www.b.com/1.html http://www.a.com/1.html http://www.b.com/2.html http://www.a.com/2.html if you sort by domain name, results might be http://www.a.com/1.htmlhttp://www.a.com/2.html http://www.b.com/1.html http://www.b.com/2.html If i want to have one result per domain. no sorting, just filtering out some results. http://www.b.com/1.html http://www.a.com/1.html can this still be achieved using sort? If not any other ways of doing this ? Thanks. Erik Hatcher <[EMAIL PROTECTED]> wrote: On Apr 9, 2004, at 8:16 PM, Michael A. Schoen wrote: > I have an index of urls, and need to display the top 10 results for a > given query, but want to display only 1 result per domain. It seems > that using either Hits or a HitCollector, I'll need to access the doc, > grab the domain field (I'll have it parse ahead of time) and only > take/display documents that are unique. > > A significant percentage of the time I expect I may have to access > thousands of results before I find 10 in unique domains. Is there a > faster approach that won't require accessing thousands of documents? I have examples of this that I can post when I have more time, but a quick pointer... check out the overloaded IndexSearcher.search() methods which accept a Sort. You can do really really interesting slicing and dicing, I think, using it. Try this one on for size: example.displayHits(allBooks, new Sort(new SortField[]{ new SortField("category"), SortField.FIELD_SCORE, new SortField("pubmonth", SortField.INT, true) })); Be clever indexing the piece you want to group on - I think you may find this the solution you're looking for. Erik --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
