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From "Reuven Ivgi" <>
Subject RE: Define end-of-paragraph
Date Tue, 03 Oct 2006 09:27:32 GMT
To be more precise, the basic entity I am using is a document, each with
paragraphs which may be up to few thousands. I need the proximity search
within a paragraph, yet, I want to get as a search result the paragraph
number also. Maybe, defining each paragraph as separate field it the
best way
What do you think?
Thanks in advance 

Reuven Ivgi

-----Original Message-----
From: Chuck Williams [] 
Sent: Tuesday, October 03, 2006 10:58 AM
Subject: Re: Define end-of-paragraph

Reuven Ivgi wrote on 10/02/2006 09:32 PM:
> I want to divide a document to paragraphs, still having proximity
> within each paragraph
> How can I do that?

Is your issue that you want the paragraphs to be in a single document,
but you want to limit proximity search to find matches only within a
single paragraph?  If so, you could parse your document into paragraphs
and when generating tokens for it place large gaps at the paragraph
boundaries.  Each Token in lucene has a startOffset and endOffset that
you can set as you generate Tokens inside for the
TokenStream returned by your Analyzer.  Those classes and methods are
all in org.apache.lucene.analysis.  Or alternatively, you could make
each paragraph a separate field value and use
Analyzer.getPositionIncrementGap() to achieve essentially the same thing
(except that your Documents could get unwieldy if you that have many

If this is not what you are trying to do, then please explain your
objectives precisely.

Good luck,


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