org.wso2.balana.combine.xacml3
Class PermitUnlessDenyRuleAlg

java.lang.Object
  extended by org.wso2.balana.combine.CombiningAlgorithm
      extended by org.wso2.balana.combine.RuleCombiningAlgorithm
          extended by org.wso2.balana.combine.xacml3.PermitUnlessDenyRuleAlg

public class PermitUnlessDenyRuleAlg
extends RuleCombiningAlgorithm

This is the standard Deny unless permit rule combining algorithm. This algorithm is intended for those cases where a deny decision should have priority over a permit decision, and an "Indeterminate" or "NotApplicable" must never be the result. It is particularly useful at the top level in a policy structure to ensure that a PDP will always return a definite "Permit" or "Deny" result.


Field Summary
static String algId
          The standard URI used to identify this algorithm
 
Constructor Summary
PermitUnlessDenyRuleAlg()
          Standard constructor.
PermitUnlessDenyRuleAlg(URI identifier)
          Constructor that takes the algorithm's identifier.
 
Method Summary
 AbstractResult combine(EvaluationCtx context, List parameters, List ruleElements)
          Combines the rules based on the context to produce some unified result.
 
Methods inherited from class org.wso2.balana.combine.CombiningAlgorithm
getIdentifier
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

algId

public static final String algId
The standard URI used to identify this algorithm

See Also:
Constant Field Values
Constructor Detail

PermitUnlessDenyRuleAlg

public PermitUnlessDenyRuleAlg()
Standard constructor.


PermitUnlessDenyRuleAlg

public PermitUnlessDenyRuleAlg(URI identifier)
Constructor that takes the algorithm's identifier.

Parameters:
identifier - the algorithm's identifier
Method Detail

combine

public AbstractResult combine(EvaluationCtx context,
                              List parameters,
                              List ruleElements)
Description copied from class: RuleCombiningAlgorithm
Combines the rules based on the context to produce some unified result. This is the one function of a combining algorithm.

Specified by:
combine in class RuleCombiningAlgorithm
Parameters:
context - the representation of the request
parameters - a (possibly empty) non-null List of CombinerParameters
ruleElements - a List of CombinerElements
Returns:
a single unified result based on the combining logic


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