concrete proposal of condition reference (#7)

Hi Polar,

Here is schema based on Expression type and 
derived types. Choice group is also possible, I can put it together if there 
is

enough interest.

 

I summarise my assumptions on the topics discussed 
in previous emails:

 

1. Redefined variable definition - policy is 
invalid
2. Ok to have undefined variable reference in variable 
definition, but it must be defined later.
3. More than one place for variable 
definitions, ie definition can be placed close to the rule.
4. Expression 
evaluates to the value and this value remains the same for the entire 
evaluation. Value type is determined by the type of expression.

 

I replaced <Function> element with the 
<HigherOrderApply> because <Function> can not be made into 
expression by itself.

I'm not particularly attached either to it's name 
or definition, but I think it makes sense to define higher order expression 
element.

 

Simon

oasis-xacml-2_0-policy-schema-wd-041.zip