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Hi,
I think this will make you happy. The key here is to indicate the type of
list being used by using the xsi:type="blah" attribute in the instance:
schema:
<?xml version="1.0" encoding="UTF-8"?>
<schema
xmlns="http://www.w3.org/2001/XMLSchema"
xmlns:g="http://www.example.org"
targetNamespace="http://www.example.org"
>
<complexType name="list.Type">
<choice>
<element name="item1" maxOccurs="unbounded" minOccurs="0"/>
<element name="item2" maxOccurs="unbounded" minOccurs="0"/>
</choice>
</complexType>
<complexType name="listEx.Type">
<complexContent>
<extension base="g:list.Type">
<choice>
<element name="item3" maxOccurs="unbounded" minOccurs="0"/>
</choice>
</extension>
</complexContent>
</complexType>
<element name="list" type="g:list.Type"/>
<element name="lists">
<complexType>
<sequence>
<element ref="g:list" maxOccurs="unbounded"/>
</sequence>
</complexType>
</element>
</schema>
document instance:
<?xml version="1.0" encoding="UTF-8"?>
<g:lists
xmlns:g="http://www.example.org"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.example.org ../schemas/generic.xs"
>
<g:list>
<item1/>
<item1/>
</g:list>
<g:list xsi:type="g:listEx.Type">
<item3/>
</g:list>
</g:lists>
> -----Original Message-----
> From: Andrew Goodchild [mailto:andrewg@d...]
> Sent: Friday, March 08, 2002 3:53 AM
> To: xml-dev@l...
> Subject: Genericity and XML-Schema
>
>
>
> Hi,
>
> I know someone has probably asked this question before, but is
> genericity/polymorphism supported in XML-Schema? For example
> if I have a
> complex type for <list> and want to later on create a list of
> addressess
> or a list of blood pressures. Is genericity anything more than simply
> creating a complex type which extends the <item> in the <list> as an
> address or as a blood pressure?
>
> thanks, Andrew
>
>
>
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