If the time span or website (I assume you mean domain name) is a field in your index then you can use result grouping. Result grouping has impact on your query time and if you have a lot of data you need to divide your data across multiple indices and use distributed result grouping.
Martijn On 24 May 2012 11:09, Ian Lea <ian....@gmail.com> wrote: > I've never come across this GroupingCollector stuff before so know > nothing about it apart from looking at the javadocs and may be talking > nonsense, but here goes anyway. > > group by time span/web site: it appears that it will group by single > values, not ranges, So should work fine by website. Just replace > "author" in the example with "url" or whatever field you use. What > exactly do you mean by time span? If you've got that stored in a > field and want to group by single values I guess it would work. > > performance problem under oceans of data? Sure. Fast enough for you > on your data? Who knows - try it and see. > > Group based on all docs? Don't see why not. The example in the > javadocs uses a TermQuery. Try a MatchAllDocsQuery instead. > > > > -- > Ian. > > > On Thu, May 24, 2012 at 9:30 AM, 齐保元 <qibaoy...@126.com> wrote: >> Hi,there.I meet a problem to grouping the search result by time span and/or >> web site.Can Lucene's FirstPassGroupingCollector and >> SecondPassGroupingCollector work.Is there search performance problem under >> oceans of datas? Is is possible to group based on all Docs not top >> DOcs?Thanks guys/girls. >> >> >> -- >> >> ____________________________________________ >> 齐保元(Qi Baoyuan) >> 中科院计算技术研究所 智能信息处理重点实验室(ICT,NKI,GUCAS,Beijing,China) >> 手机：15120084688 >> E-Mail：qibaoy...@126.com > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > -- Met vriendelijke groet, Martijn van Groningen --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
