[xacml] [CR] DataType attribute required?

DataType attribute in AttributeDesignatorType is 'required'. But in most
cases, AttributeDesignator is used below the matching function (e.g.
string-match) and that function is type-specific. So I think "DataType"
attribute is not required. I propose to change it to "optional".

<xs:complexType name="AttributeDesignatorType">
  <xs:attribute name="AttributeId" type="xs:anyURI" use="required"/>
  <xs:attribute name="DataType" type="xs:anyURI" use="required"/>
  <xs:attribute name="Issuer" type="xs:anyURI" use="optional"/>
</xs:complexType>

[should be]
<xs:complexType name="AttributeDesignatorType">
  <xs:attribute name="AttributeId" type="xs:anyURI" use="required"/>
  <xs:attribute name="DataType" type="xs:anyURI" use="optional"/>
  <xs:attribute name="Issuer" type="xs:anyURI" use="optional"/>
</xs:complexType>

Michiharu

IBM Tokyo Research Laboratory, Internet Technology
Tel. +81 (46) 215-4642   Fax +81 (46) 273-7428