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[XQuery full text] i18n core comment: xml:lang vs. language option in a query

From: <fsasaki@w3.org>
Date: Fri, 22 Jun 2007 21:54:19 +0900
To: public-qt-comments@w3.org, public-i18n-core@w3.org
Message-Id: <20070622125423.05B78682B@toro.w3.mag.keio.ac.jp>

Comment from the i18n review of:

Comment 3
At http://www.w3.org/International/reviews/0706-xquery-fulltext/
Editorial/substantive: S
Location in reviewed document:
2.2.1, and 3.3.6
xml:lang vs. language option in a query

XQuery 1.0 and XPath 2.0 Full-Text allows using language information as an input to a query, to trigger e.g. the choice of a language-specific stop word list:

//p ftcontains \"salon de the\"with default stop words language \"fr\"
Language information can be given in the static context as described in sec. 3.3.6, in a query as described in sec. 2.2.1, and via xml:lang in the target document of a query.

We think that the relation between language information given via 
xml:lang and other language information (given static or in a query) should be made explicit. An example of a statement where this relation is not explicit is in sec. 2.2.1:

\"An XQuery 1.0 and XPath 2.0 Full-Text processor SHOULD try to use the information available in xml:lang for processing of collations, as well as the various match options defined in Section 3.3 Match Options.\"

Questions which arise are: what has higher precedence (xml:lang or the language option)? Do you assume inheritance of the language option [http://www.w3.org/TR/2007/WD-xpath-full-text-10-20070518/#doc-xquery-FTLanguageOption] and / or 
xml:lang? Given a query like
//p ftcontains \"salon de the\"with default stop words language \"fr\"
and xml:lang=\"en\" at the root of the document: what language would you assume for salon de the in 
<p>salon de the</p>
<p>... <phrase xml:lang=\"en\">salon de the</phrase> ...</p>
In 3.3.6 you write that the relation between xml:lang and the language option is implementation-defined. However, we think that you should specify the precedence / inheritance behaviour of the language option and xml:lang.

Received on Friday, 22 June 2007 12:54:28 UTC

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