Re: [xml-dev] Problem using <xsd:all>

[Paul Stepowski <paul.stepowski@intient.com>]

Hi George,

This seems closer but still allows multiple <success> or <failure> tags.

That is, I require either:

<tasklist>
  <success/>
  <failure/>
</tasklist>

or:

<tasklist>
  <failure/>
  <success/>
</tasklist>

But your suggested schema still allows:

<tasklist>
  <success/>
  <failure/>
  <failure/>
  <failure/>
  <failure/>
</tasklist>

etc.

I've tried experimenting with various combinations of minOccurs and 
maxOccurs but I still can't nail this.

Thanks,

Paul


George Cristian Bina wrote:
> Hi Paul,
>
> Use a choice
> (success,failure)|(failure,success)
>
> in XML Schema:
>
> <xsd:choice>
>   <xsd:sequence>
>     <xsd:element ref="tasklist:success"/>
>     <xsd:element ref="tasklist:failure"/>
>   </xsd:sequence>
>   <xsd:sequence>
>     <xsd:element ref="tasklist:failure"/>
>     <xsd:element ref="tasklist:success"/>
>   </xsd:sequence>
> </xsd:choice>
>
> Best Regards,
> George
> ---------------------------------------------------------------------
> George Cristian Bina - http://aboutxml.blogspot.com/
> <oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger
> http://www.oxygenxml.com
>
>
> Paul Stepowski wrote:
>> Dennis Sterzenbach wrote:
>>> Hi Paul!
>>>
>>> Paul Stepowski wrote:
>>> <snip />
>>>>   <xsd:element name="task">
>>>>     <xsd:complexType>
>>>>       <xsd:sequence>
>>>>         <xsd:element ref="tasklist:prerequisites" minOccurs="0"
>>>>           maxOccurs="1" />
>>>>         <xsd:all>
>>>>           <xsd:element ref="tasklist:success" minOccurs="1"
>>>>             maxOccurs="1" />
>>>>           <xsd:element ref="tasklist:failure" minOccurs="1"
>>>>             maxOccurs="1" />
>>>>         </xsd:all>
>>>>       </xsd:sequence>
>>>>       <xsd:attribute name="id" type="xsd:string" use="required" />
>>>>     </xsd:complexType>
>>>>   </xsd:element>
>>> <snip />
>>>> "The content of 'sequence' must match (annotation?, (element | 
>>>> group | choice |
>>>> sequence | any)*). A problem was found starting at: all."
>>>>
>>>> According to the w3c, all is a valid tag.  Can anyone shed some 
>>>> light on this error?
>>> These are valid tags, but unfortunately not in that order.
>>> As far as I know you can't use <xsd:all> inside a sequence:
>>>
>>> "Parent elements: group, complexType, restriction (both simpleContent
>>> and complexContent), extension (both simpleContent and complexContent)"
>>>
>>> Best regards
>>> -- Dennis Sterzenbach
>>
>> Thanks Dennis,
>>
>> My next question is then, can I achieve the same effect with a 
>> different syntax?
>>  I need to specify <success> AND <failure> both occuring once each 
>> (in any
>> order).
>>
>> Thanks,
>>
>> Paul
>>
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