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Posted to java-user@lucene.apache.org by Vikas Khengare <Vi...@symantec.com> on 2006/01/30 15:23:04 UTC
Why do we use BitSet class ?
Hi Friends........
I am very New to Lucene World !!! As this world is interesting to me
So I want to go in deep level of it to realize the beauty of it.
So can you help me to realize that beauty ?
I have question
1] Why do use BitSet Class ?
2] Is it required in Filtering / Sorting of results or to Index ?
3] What do you means by Inverted Index ?
4] Can we give limit to no. of hits returned by Searcher.
Thanks.
Best Regards
[ vikas_khengare@symantec.com ]
Re: Why do we use BitSet class ?
Posted by Chris Hostetter <ho...@fucit.org>.
: 1] Why do use BitSet Class ?
: 2] Is it required in Filtering / Sorting of results or to Index ?
BitSet is a usefull class for lots of things. the only time (that i know
of) where it is part of the public lucene API is in the interaction
between a Filter and the IndexSearcher ... so unless you are writting your
own Filters, no it's not required that you use a BitSet.
: 3] What do you means by Inverted Index ?
That's a pretty broad question... start with googling for the expression
and see if the info you find helps you understand the concept.
: 4] Can we give limit to no. of hits returned by Searcher.
Searchers score documents in doc id order ... so you don't really want a
way to limit the searcher. what you want is a way to only get the first N
results once hte searcher has scored them all and ordered them by score.
doesn't that is just a matter of stopping at N when you iterate over a
Hits object.
-Hoss
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Re: Why do we use BitSet class ?
Posted by Erik Hatcher <er...@ehatchersolutions.com>.
Please do not cross-post your questions. Your questions are best
asked solely to java-user.
Erik
On Jan 30, 2006, at 9:23 AM, Vikas Khengare wrote:
> Hi Friends........
>
> I am very New to Lucene World !!! As this world is interesting
> to me
> So I want to go in deep level of it to realize the beauty of it.
> So can you help me to realize that beauty ?
>
> I have question
>
> 1] Why do use BitSet Class ?
> 2] Is it required in Filtering / Sorting of results or to Index ?
> 3] What do you means by Inverted Index ?
> 4] Can we give limit to no. of hits returned by Searcher.
>
> Thanks.
>
> Best Regards
> [ vikas_khengare@symantec.com ]
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