W3C home > Mailing lists > Public > public-qt-comments@w3.org > February 2004

[FO] Bug in contains()

From: Jonathan Robie <jonathan.robie@datadirect.com>
Date: Thu, 12 Feb 2004 18:52:53 -0500
Message-ID: <402C11D5.1010801@datadirect.com>
To: Michael Rys <mrys@microsoft.com>
Cc: Michael Kay <mhk@mhk.me.uk>, Jonathan Robie <jonathan.robie@datadirect.com>, XML Query Comments <public-qt-comments@w3.org>

As currently specified, fn:contains() raises a type error for elements 
of complex type with complex content.  Suppose I have the following element:

<people xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    <person>Michael Kay</person>
    <person>Jonathan Robie</person>
    <person>Michael Rys</person>

Which is governed by the following schema:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" 
  <xs:element name="people">
        <xs:element maxOccurs="unbounded" ref="person"/>
  <xs:element name="person" type="xs:string"/>

Now I want to do the following query:

    let $people := doc('people.xml')
    return contains($people, "Rys")

When the query attempts to cast $people to a string, it will try to 
atomize the element using dm:typed-value(), and the following rule applies:

     If the node has a complex type with complex content, raises a
     type error, which may be handled by the host language.

We should see if there are other functions/operators that have this same 

Received on Thursday, 12 February 2004 18:55:24 UTC

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