- To: "Baisak, Ranjan" <ranjan_baisak@m...>, "Michael Kay" <mike@s...>, "XML Developers List" <xml-dev@l...>
- Subject: RE: Is possible to have choice type facility for an attribute of schema
- From: "Chiusano Joseph" <chiusano_joseph@b...>
- Date: Tue, 8 Mar 2005 07:28:46 -0500
- Thread-index: AcUjrwhOcOKRuKS0TwehKLYEmdQrywAD5dDwAAAcwtAABs0FsA==
- Thread-topic: Is possible to have choice type facility for an attribute of schema
You can declare 3 different local versions of element "a", each with a
different attribute - or one global version and 2 local. This should allow what
you need.
Kind Regards,
Joseph Chiusano
Booz Allen Hamilton
Strategy and Technology Consultants to
the World
In my schema, the same element can have diffenet
view.
e.g. <a id="123" name="test"/>
<a id="123"
view="true"/>
<a id="123" alt="true"/>
I am not interested to make name, view and alt attributes
optional. One of these attributes must be there in <a> element. Which
necessiates me for looking into a choice kind of
functionality.
regards,
-Ranjan
Sadly, no.
I've never quite understood why: XML Schema when to a lot
of efforts to make elements and attributes symmetric, but they are handled
quite differently in content models.
Michael Kay
http://www.saxonica.com/
Like the way
choice is applied for an element, I want same type of functionality for
attributes too.
I want sort
of like below:
<xsd:element
name="name">
<xsd:complexType>
<xsd:choice>
<xsd:attribute
name="operator" type="OperatorType" default="EQUALS"
use="required"/>
<xsd:attribute name="value"
type="xsd:string"
use="required"/>
</xsd:choice>
</xsd:complexType>
</xsd:element>
regards,
Ranjan
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