Hi Paul,

The code fragment I posted allows only

<success/>
<failure/>

and

<failure/>
<success/>

How did you get to the conclusion that it allows multiple instances of 
failure? It may be possible that you are embedding that code fragment in 
another particle that can appear multiple times. A short but complete 
schema should help to identify exactly what is wrong, in general you 
will identify that yourself while creating the short but complete example.

Best Regards,
George
---------------------------------------------------------------------
George Cristian Bina - http://aboutxml.blogspot.com/
<oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger
www.---.com


Paul Stepowski wrote:
> 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
>> www.---.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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> 
> _______________________________________________________________________
> 
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