Changeset 6792 for TI12-security/trunk/NDG_XACML/ndg/xacml/core/attributevalue.py

Timestamp:

31/03/10 16:41:23 (11 years ago)

Author:

pjkersha

Message:

Made ndg.xacml.core.expression.Expression abstract: derived classes must implement the evaluate method used to evaluate a result in a rule condition.

File:

• TI12-security/trunk/NDG_XACML/ndg/xacml/core/attributevalue.py (modified) (1 diff)

TI12-security/trunk/NDG_XACML/ndg/xacml/core/attributevalue.py

@@ -32 +32 @@
         self.__value = value  
 
-    value = property(_get_value, _set_value, None, "expression value")    
+    value = property(_get_value, _set_value, None, "expression value") 
+    
+    def evaluate(self, context):
+        """Evaluate the result of the expression in a condition
+        @param context: the request context
+        @type context: ndg.xacml.core.context.request.Request
+        @return: attribute value(s) resulting from execution of this expression
+        in a condition
+        @rtype: AttributeValue/NoneType  
+        """ 
+        return self.__value