Re: [xacml-users] AttributeSelector usage

["Muhammad Masoom Alam" <Muhammad.alam@uibk.ac.at>]

nice discussion,


>> We could not generalize the AttributeSelector, because it job is to
>> select atomic values, not complex data structures.  It would not be
>> possible to define strict typing for arguments otherwise.  You can
>> access anything using an AttributeDesignator, from a context populated
>> with your custom datatypes,  or a function that returns your custom
>> datatype and takes path to it as its argument, if you need to make
>> selection as part of the policy.  Such function would be responsible for
>> the type safety then.

Daniel, if i am getting your point correctly , u mean to have a function e.g.

<Apply FunctionId="SECTINO: Extract-parameter-from-request">

<AttributeValue  ="http://www.w3.org/2001/XMLSchema#string";>

/Request/Action/Attribute[@AttributeID="p"]/AttributeValue/p/ID

</AttributeValue>

                </Apply>







in response the the request



<Request>

..

..



<Action>

<Attribute AttributeId="urn:oasis:names:tc:xacml:1.0:attribute:p"

                DataType="http://www.w3.org/2001/XMLSchema#String";>

 <AttributeValue  DataType="http://www.w3.org/2001/XMLSchema#String";>

   &lt;p&gt;

    &lt;iD&gt;127Asbc &lt;/iD&gt;
     .

    &lt;/p&gt;



   </AttributeValue>

 

     </Attribute>



</Action>

..

..



</Request>





The question is "why we need ResourceContent element at all i.e. If we can carry attribute values inside the request like  given above."

/
Muhammad.