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From jm <jmugur...@gmail.com>
Subject Re: get the total number of hits of a query
Date Tue, 23 Feb 2010 16:49:09 GMT
perfect, thanks guys

On Tue, Feb 23, 2010 at 5:28 PM, Uwe Schindler <uwe@thetaphi.de> wrote:
> Hi,
>
> TopDocs tp = ms.search(lucquery, Integer.MAX_VALUE);
>
> ^^^This will crash and throw OutOfMemoryException
>
> The simpliest way ist:
> TopDocs tp = ms.search(lucquery, 1);
> And then the total count is in tp.totalHits -- simple. The above query will still count
all hits, but return only 1. Adjust according to your needs (e.g. 10).
>
> -----
> Uwe Schindler
> H.-H.-Meier-Allee 63, D-28213 Bremen
> http://www.thetaphi.de
> eMail: uwe@thetaphi.de
>
>
>> -----Original Message-----
>> From: jm [mailto:jmuguruza@gmail.com]
>> Sent: Tuesday, February 23, 2010 5:23 PM
>> To: java-user@lucene.apache.org
>> Subject: get the total number of hits of a query
>>
>> Hi,
>>
>> I need to find out how many hits a query will get, is this a valid
>> way? (Lucene 3.0)
>>
>>         Query lucquery = ...;
>>         IndexSearcher[] indexes = ...
>>         MultiSearcher ms = new MultiSearcher(indexes);
>>         TopDocs tp = ms.search(lucquery, Integer.MAX_VALUE);
>>         int hits = tp.totalHits;
>>
>> Then depending on the number of hits I will run it again to get all
>> results or not.
>>
>> I have found some posts talking about something similar but I could
>> not see a clear answer...
>>
>> thanks
>> javi
>>
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>
>
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