>Are there derivation relationships between 
listOfFloat and float?
 
XML Schema 1.0 sometimes uses the terminology that listOfFloat is 
"derived by list" from float. The preferred terminology however is that 
listOfFloat is "constructed by list", rather than being derived by 
list.
 
>Can I write the following XML instance? 
<o:p></o:p>
<listOfFloat 
xsi:type=”float”>4.5</listOfFloat>
 
 
Assuming the declared type of 
element listOfFloat is type listOfFloat, no. The type referenced in xsi:type 
must satisfy Type Derivation OK (Simple Type) in relation to the declared type, 
and this doesn't. The rules are in http://www.w3.org/TR/xmlschema-1/#cos-st-derived-ok
 
Michael Kay
http://www.saxonica.com/
 
<o:p></o:p> 
<o:p></o:p> 


  
  
  From: Eran Balter [mailto:E.Balter@F...] 
  
Sent: 03 April 2008 21:49
To: 
  xml-dev@l...
Subject: [xml-dev] Using xsi:type for 
  traversing the derivation hierarchy


  
  
  Hi,<o:p></o:p>
  <o:p> </o:p>
  If I define a list of built-in types, such as an integer, 
  are there derivation relations between the list and integer, for 
  example:<o:p></o:p>
  <simpleType 
  name='listOfFloat'><o:p></o:p>
    <list 
  itemType='float'/><o:p></o:p>
  </simpleType><o:p></o:p>
  Are there derivation relationships between listOfFloat and 
  float?<o:p></o:p>
  <o:p> </o:p>
  Can I write the following XML instance? <o:p></o:p>
  <listOfFloat 
  xsi:type=”float”>4.5</listOfFloat><o:p></o:p>
  <o:p> </o:p>
  Regards,<o:p></o:p>
  Eran<o:p></o:p>