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From "Erick Erickson" <>
Subject Re: maxDoc and arrays
Date Thu, 24 May 2007 17:25:24 GMT
See below...

On 5/24/07, Carlos Pita <> wrote:
> Hi all,
> Is there any guaranty that the maxDoc returned by a reader will be about
> the
> total number of indexed documents?

No. It will always be at least as large as the total documents. But that
will also count deleted documents.

Why wouldn't numdocs serve?


The motivation of this question is that I want to associate some info to
> each document in the index, and in order to access this additional data in
> O(1) I would like to do this through an array indexing. But the array size
> shouldn't be a lot greater than the total number of documents. I see that
> something similar is done in the example of section 6.1 of Lucene in
> Action,
> but for sorting purposes, which is not my case.
> Related to this: how can update my array of extra data when documents are
> added/removed to/from the index? Is there any feedback mechanism by means
> of
> callbacks or event handlers?
> Thank you in advance.
> Regards,
> Carlos

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