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From Chuck Williams <>
Subject Re: Define end-of-paragraph
Date Tue, 03 Oct 2006 08:58:22 GMT

Reuven Ivgi wrote on 10/02/2006 09:32 PM:
> I want to divide a document to paragraphs, still having proximity search
> 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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