Newbie: fixed and not-empty element

[monique]

Hi,

I have an enumeration and I would like to fix the value of an element.

A thing like this

<?xml version="1.0"?>
<test>
<single-value>aaa</single-value>
</test>

with the schema:

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified" attributeFormDefault="unqualified">

<xs:element name="test">
<xs:complexType>
<xs:sequence>
<xs:element name="single-value"
type="single-value-type" fixed="aaa" maxOccurs="unbounded" />
</xs:sequence>
</xs:complexType>
</xs:element>

<xs:simpleType name="single-value-type">
<xs:restriction base="xs:string">
<xs:enumeration value="aaa" />
<xs:enumeration value="bbb" />
<xs:enumeration value="ccc" />
</xs:restriction>
</xs:simpleType>
</xs:schema>

the example validates against the schema and so do this:

<?xml version="1.0"?>
<test>
<single-value/>
<single-value>aaa</single-value>
</test>

I don't want an empty single-value.
What can I do ?


This example

<?xml version="1.0"?>
<test>
<single-value/>
<single-value>aaa</single-value>
<single-value>bbb</single-value>
<single-value>ccc</single-value>
</test>

doesn't validate on bbb and ccc, just as I need.
I would like to get the same on <single-value/>.

Thanks in advance,

Monique

 

[Stan Kitsis [MSFT]]

When an element value is absent, "fixed" acts as "default".

--
Stan Kitsis
Program Manager, XML Technologies
Microsoft Corporation

This posting is provided "AS IS" with no warranties, and confers no rights.
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[George Bina]

You can use a restriction of your type to that single value:

<xs:element name="single-value" maxOccurs="unbounded">
<xs:simpleType>
<xs:restriction base="single-value-type">
<xs:enumeration value="aaa"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
</xs:sequence>

Best Regards,
George

 

[monique]

Thanks!
It works great!

Bye