RE: [xacml] proposal for AttributeValue element to support sequen ceof values.

[Daniel Engovatov <dengovatov@crosslogix.com>]

 I was wrong - looked in context accidentally.  Let' discuss it when
convinient..

-----Original Message-----
From: Daniel Engovatov
To: Daniel Engovatov; ''Simon Godik' '; 'xacml@lists.oasis-open.org '
Sent: 8/19/02 7:59 AM
Subject: RE: [xacml] proposal for AttributeValue element to support sequence
of values.

 

Apparenly I looked at one schema version too old (at f, not g)
<Attribute> in 'g' resolves that - unless I am wrong..

Daniel.

-----Original Message-----
From: Daniel Engovatov
To: 'Simon Godik'; xacml@lists.oasis-open.org
Sent: 8/15/02 5:40 PM
Subject: RE: [xacml] proposal for AttributeValue element to support
sequen	ce of values.

Currently <attributeValue> element is an extension of anyType, with
specified DataType.
XACML functions arguments are, in general, a sequence of typed elements
- as it can be returned by a designator from context.  While most accept
only single values (sequence of size 1), some set operation functions
have an arbitrary length sequence as an argument.
We need to provide syntax to express a sequence of values as a literal
argument in set operations (like union, member_of, intersection..)
 
I propose adding element Value, of anyType, and defining
<AttributeValueType> as sequence of <Value>, with DataType attribute,
applicable to all elements 
in the sequence.  It supports 0 size of the sequence, to support empty
set in operations
 
 <xs:element name="Value" type="xs:anyType"/>
 <xs:element name="AttributeValue"/>

<xs:complexType name="AttributeValueType">
  <xs:sequence minOccurs="0" maxOccurs="unbounded">
    <xs:element ref="Value"/>
  </xs:sequence>
   <xs:attribute name="name" type="xs:anyURI" use="required"/>
 </xs:complexType>