[Standards] <option/> vs. <value/> in sequence
Brett Zamir
brettz9 at yahoo.com
Thu Nov 20 20:05:37 CST 2008
Peter Saint-Andre wrote:
> Brett Zamir wrote:
>
>> According to the schema in Data Forms,
>> http://xmpp.org/extensions/xep-0004.html , <value/> should precede
>> <option/>:
>>
>> <xs:sequence>
>> <xs:element name='desc' minOccurs='0' type='xs:string'/>
>> <xs:element name='required' minOccurs='0' type='empty'/>
>> <xs:element ref='value' minOccurs='0' maxOccurs='unbounded'/>
>> <xs:element ref='option' minOccurs='0' maxOccurs='unbounded'/>
>> </xs:sequence>
>>
>>
>>
>> However, in the Pubsub spec, http://xmpp.org/extensions/xep-0060.html ,
>> the examples (57, 128, 141) all show <value/> (expressing the default
>> value in a list) after <option/>. I guess the schema needs to be changed
>> then?
>>
>
> Option is defined thus:
>
> <xs:element name='option'>
> <xs:complexType>
> <xs:sequence>
> <xs:element ref='value'/>
> </xs:sequence>
> <xs:attribute name='label' type='xs:string' use='optional'/>
> </xs:complexType>
> </xs:element>
>
> So a field can be either of the following:
>
> <field>
> <value/>
> </field>
>
> <field>
> <option>
> <value/>
> </option>
> </field>
>
> /psa
>
>
I'm referring to cases where <value/> is used for a default value. For
example, from XEP-0060, in example 128:
<field var='pubsub#publish_model' type='list-single' label='Specify the publisher model'>
<option><value>publishers</value></option>
<option><value>subscribers</value></option>
<option><value>open</value></option>
*<value>publishers</value>*
</field>
The Data Forms schema for 'field' would indicate that <value/> instances
must come before any <option/> instances...
Brett
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