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From Chris Hostetter <>
Subject Re: unique-id to doc-num
Date Mon, 17 Mar 2008 06:43:57 GMT

: I'd like to have an up-to-date map from unique-ids to lucene internal
: doc-nums.

Which way do you want the mapping to go?

You can use the FieldCache to generate a cached mapping from docid to any 
(single value) indexed field.

if you want a mapping from field value to docid, just iterate over a 
TermEnum for your field, you'll get all the field values in lexical order 
and you can use a TermDoc to find which doc(s) are associated with that 


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