XSD

[zeert2002]

Hi, can anybody help me with this xsd rule?

I have this rule in my xsd file:

<xs:element name="id" type="xs:long"/>

In my xml file, this is not acceptable because it says '' is not an integer:

<id></id>

Is there a way in to specify a xsd rule to allow empty content? Thanks

 

[tsuji]

[1] Since xs:long is simpleType, this case has a slightly fortunate outcome using xs:union to make it.
[tt]
<xs:element name="id" type="voidable_long" />
<xs:simpleType name="voidable_long">
<xs:union memberTypes="xs:long voidType" />
</xs:simpleType>
<xs:simpleType name="voidType">
<xs:restriction base="xs:string">
<xs:length value="0" />
</xs:restriction>
</xs:simpleType>
[/tt]
[2] For general case, you might have to resort to use XMLSchema-instance namespace specifying in the document instance. (Both forms are validated.)
[tt]
<id xmlns:xsi="

http://www.w3.org/2001/XMLSchema-instance"

xsi:nil="true"></id>
<id xmlns:xsi="

http://www.w3.org/2001/XMLSchema-instance"

xsi:nil="true" />
[/tt]
In schema document, script nillable to true.
[tt]
<xs:element name="id" type="xs:long" nillable="true" />
[/tt]