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From Erik Hatcher <>
Subject Re: Add unique id to a doc
Date Thu, 21 Jul 2005 17:18:53 GMT
You could certainly use IndexReader to get the last document in the  
index and retrieve its ID, but why?

What use case do you have in mind for such id's?  Do they have a non- 
arbitrary meaning?  Do your documents have nothing unique to identify  
them already?


On Jul 21, 2005, at 11:53 AM, Riccardo Daviddi wrote:

> Hi all,
> it's possible to set an unique id (as keyword field) to a doc by
> looking in the index? I mean, it's possible to look in the index and
> know what is the last id (which is a keyword field) and then decide
> for the new id to associate to the new indexed doc? Or it's better
> store the doc in a db and get so a unique id (the key of the row in
> the db) and use it as the unique id for the keyword field in the
> index?
> -- 
> Riccardo Daviddi
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