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[FT] FTDistance

From: andrewc <andrew.cao@cisra.canon.com.au>
Date: Mon, 18 Jul 2005 10:54:34 +1000
Message-ID: <42DAFDCA.3050805@cisra.canon.com.au>
To: public-qt-comments@w3.org

Dear editors,

This is a comment of the last example in section 3.1.9 FTDistance in 
XQuery and XPath Full Text Working Draft.
The Working Draft says:
---
/book[@number="1" and . ftcontains "web site" && "completion" distance 
exactly 15 words same paragraph]/title
returns the title element if the words "web site" and "completion" 
appear within 15 words of each other and in the same paragraph.
---
However the semantic function of FTDistance says that the adjacent 
StringIncludes must have distance exactly 15 words. However here the 
StringInclude for "web" and the StringInclude for "site" will always 
have word distance zero. So this query should never return title element 
because there is no Match returned by FTDistance.

It appears to me that FTDistance is related with words, not phrases.
Am I correct?
Thanks,
Received on Monday, 18 July 2005 00:57:08 UTC

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