Defining different elements in XML Schema

[fulvio.risso]

Hello guys.

I would like to use the following two types of elements in my XML file:

<field type="fixed" size="10"/>
<field type="variable" expr="a+b"/>

The problem is that I cannot find a way to define the proper XML
schema. The problem is that I would like to define an element
("<field>") which may have different syntax according to the value of
one of its attribute. It seems to me that a solution is to use
"xsi:type=..." in the XML file, but I don't want to do that.

Does anybody have a solution for this (maybe stupid) problem?

Cheers,

fulvio

 

[Soren Kuula]

Does anybody have a solution for this (maybe stupid) problem?

Hi,

The stupid one is not you..

You can't specify the dependence of anything on attribute values in XML
Schema.

Relax NG can do it, and it's a much nicer language to work with (my
opinion anyway).

Soren

 

[Stan Kitsis [MSFT]]

Can you use this instead?

<fields>
<fixed size="10"/>
<variable expr="a+b"/>
</fields>

--
Stan Kitsis
Program Manager, XML Technologies
Microsoft Corporation

This posting is provided "AS IS" with no warranties, and confers no rights.

 

[Priscilla Walmsley]

Hi,

Just out of curiosity, why don't you want to use xsi:type? It's a
simple matter of adding a namespace declaration in your document, and
prefix to your type attributes:

<field xsi:type="fixed" size="10"/>
<field xsi:type="variable" expr="a+b"/>

Priscilla