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From sergiu gordea <gser...@ifit.uni-klu.ac.at>
Subject Re: Finding minimum and maximum value of a field?
Date Tue, 07 Jun 2005 07:15:45 GMT


Kevin Burton wrote:

> I have an index with a date field.  I want to quickly find the minimum 
> and maximum values in the index.
>
> Is there a quick way to do this?  I looked at using TermInfos and 
> finding the first one but how to I find the last?
>
> I also tried the new sort API and the performance was horrible :-/
>
> Any ideas?

You may keep a history of the MIN and MAX values in an external file.
Let's say, you can write in a text file the MIN_DATE and MAX_DATE,
and keep them up to date when indexing, deleting documents.

Best,

 Sergiu

>
> Kevin
>


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