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Message-ID: <1bcb7c7f0809152025i6343e6a6nc4e902a03a0e8c62@mail.gmail.com>
Date: Tue, 16 Sep 2008 06:25:39 +0300
From: "Cam Bazz" <cambazz@gmail.com>
To: java-user@lucene.apache.org
Subject: Re: TopDocs question
In-Reply-To: <48CF227E.2060906@nuix.com>
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References: <1bcb7c7f0809151942gf79d8d0s97b0b5301e1cb433@mail.gmail.com>
	 <48CF227E.2060906@nuix.com>

Yes, I looked into implementing a custom collector that would return
number of hits, but - I could not.

collect() can not access anything that is final, and final can not be
incremented.

Any ideas?

Best.

On Tue, Sep 16, 2008 at 6:05 AM, Daniel Noll <daniel@nuix.com> wrote:
> Cam Bazz wrote:
>>
>> Hello,
>>
>> Could it harm if I make a
>>
>> searcher.search(query, Integer.MAX_VALUE) ?
>>
>> I just need to make a query to get the number of hits in this case,
>> but I dont know what the max hits will be.
>
> PriorityQueue will attempt to allocate an array of that size.
>
> But if you only need to know the *number* of hits, and don't need the hits
> themselves, then you should just use a custom HitCollector which increments
> a counter.  It will run much faster.
>
> Daniel
>
>
> --
> Daniel Noll
>
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