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From Peter Carlson <carl...@bookandhammer.com>
Subject Re: Bitset Filters
Date Mon, 28 Oct 2002 05:22:13 GMT
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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