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From Mark Miller <markrmil...@gmail.com>
Subject Re: Request for clarification on unordered SpanNearQuery
Date Thu, 04 Mar 2010 16:45:15 GMT
On 03/04/2010 11:34 AM, Goddard, Michael J. wrote:
> // Question: why wouldn't this Span be found?
>     assertTrue("fourth range", spans.next());
>     assertEquals("fourth doc", 11, spans.doc());
>     assertEquals("fourth start", 2, spans.start());
>     assertEquals("fourth end", 6, spans.end());

Spans are funny beasts ;)

No Spans ever start from the same position more than once. In effect, 
they are always marching forward.

The third range starts at 2, and once it finds a match starting at 2, it 
moves on. So it won't find the other
match that starts at 2. Spans are not exhaustive - exhaustive matching 
would be a different algorithm.

So yes, you are wrong in your expectation :) Just how Spans were 
implemented.

-- 
- Mark

http://www.lucidimagination.com




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