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From "Terry Steichen" <te...@net-frame.com>
Subject Re: Bitset Filters
Date Mon, 28 Oct 2002 13:35:28 GMT
The Javadocs don't say much.  But thanks anyway.

Terry

----- Original Message -----
From: "Peter Carlson" <carlson@bookandhammer.com>
To: "Lucene Users List" <lucene-user@jakarta.apache.org>
Sent: Monday, October 28, 2002 12:22 AM
Subject: Re: Bitset Filters


> Check out the java docs on the Filter class.
>
> http://jakarta.apache.org/lucene/docs/api/org/apache/lucene/search/
> Filter.html
>
> --Peter
>
> On Friday, October 25, 2002, at 03:08 PM, Terry Steichen wrote:
>
> > Peter,
> >
> > Could you give, or point to, a couple of examples on how to use bitset
> > filters in the way you describe below?
> >
> > Regards,
> >
> > Terry
> >
> > ----- Original Message -----
> > From: "Peter Carlson" <carlson@bookandhammer.com>
> > To: "Lucene Users List" <lucene-user@jakarta.apache.org>
> > Sent: Tuesday, October 22, 2002 11:26 PM
> > Subject: Re: Need Help URGENT
> >
> >
> >> I think the answer is yes.
> >>
> >> When creating a Lucene Document you can create a field which is the
> >> URL
> >> field. If you are not searching for words within the field, I would
> >> probably make it a keyword field type so you don't tokenize it into
> >> multiple Terms.
> >>
> >> Then you can great a multi-field search.
> >>
> >>
> >> url:www.apache.org AND lucene
> >>
> >> Where url is the field where the URL exists and the term you want to
> >> search for in your default field is Lucene.
> >>
> >> To answer what I think your second question is I will restate the
> >> question.
> >>
> >> Can Lucene support subsearching.
> >> Well yes and no. I will answer how to accomplish this, there is also
> >> some information in the FAQ about this.
> >>
> >> You can just add criteria to the search so
> >>
> >> url:www.apache.org AND lucene AND indexing
> >>
> >> This will return the subset of information.
> >>
> >> If you are going to do the same search over and over again, you may
> >> also want to look at filters, which basically keep a bitset of a
> >> Lucene
> >> search results so you don't actually have to do the search again, just
> >> an intersection of two bitsets.
> >>
> >> When you get the Hits back you can get the information from what ever
> >> field you want including the URL field that you will create.
> >>
> >> I hope this helps and is on the mark. If not, the answer in can you
> >> use
> >> Lucene to accomplish the task the answer is typically yes (The
> >> questions then become just how much work has to be done on top of
> >> Lucene, or is Lucene the right tool).
> >>
> >> --Peter
> >>
> >>
> >>
> >> On Tuesday, October 22, 2002, at 04:32 PM, nandkumar rayanker wrote:
> >>
> >>> Hi,
> >>>
> >>> Forther to the request already made in my previous
> >>> mail I would like to know:
> >>>
> >>> - Whether I can use lucene to search the remote site
> >>> or not?
> >>>
> >>> Here is what I wnt to do.
> >>> -Install Licene and search and create search info for
> >>> a given URL.
> >>>
> >>> -Search the info from search info already created .
> >>>
> >>> Can do this sort of things using Lucene or not?
> >>>
> >>> thanks and regards
> >>> Nandkumar
> >>>
> >>> --- nandkumar rayanker <nrayenker@sbcglobal.net>
> >>> wrote:
> >>>> Hi,
> >>>>
> >>>> I need to develop search java stand alone
> >>>> application,
> >>>> which takes "SearchString" and "URL/URLS"
> >>>>
> >>>> "SearchString": string to be searched in web
> >>>>
> >>>> URL/URLS" : List of URLs where string needs to
> >>>> searched.
> >>>> return: List of URL/URLS where "SearchString" is
> >>>> found.
> >>>>
> >>>> thanks & regards
> >>>> Nandkumar
> >>>>
> >>>> --
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> >>>>
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> >>>
> >>
> >>
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> >>
> >>
> >
> >
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> >
> >
>
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