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From Chris Hostetter <>
Subject Re: How to get Document (or filename) from Span
Date Tue, 18 Apr 2006 18:10:20 GMT

: The question is when I get Spans, I get start/end positions and a
: Document order (starting from 0), not the Document object itself from

Are you sure about that?  Spans.doc() should return you the internal
document Identifier which you can pass to indexReader.doc(int)

: which I could get a filename. Since I believe there is no way to get a
: Document object from Spans, and there is no such thing as Document ID
: in Lucene (right?) I attempt to have the same order for
: Hits and for Spans (the indexing order) and retrieve Document for each
: Spans this way.

Documents do have Document IDs, assigned based on index order.  that's
what returns.

FYI: take a look at the TestSpans.testSpanNearOrderedOverlap class for an
example of how the Spans class works. (it's what i'm using as a basis for
my suggestion as to how to use the class -- i've never used it myself)


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