ponderEnforcement.ponderMC.policyObjects.constraints
Class ConstraintHandler

java.lang.Object
  |
  +--ponderEnforcement.ponderMC.policyObjects.constraints.ConstraintHandler

public class ConstraintHandler

extends java.lang.Object

Function: Models a Constraint Handler. Evaluates Constraints

Constructor Summary

ConstraintHandler(ConstraintI newConstraint, BasicPolicyI newPolicy, PonderMCimpl newPmc)
Constructor

Method Summary

ExprValue	evalExpr(ExpressionI expr, PonderEventI event, java.rmi.Remote targetObj) Evaluates an Expression.
java.util.Vector	evaluate(ConstraintI constr, PonderEventI event) Recursive Method used to evaluate the constraint
java.util.Vector	evaluate(PonderEventI event, java.util.Vector newTargets) evalutes the constraint.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ConstraintHandler

public ConstraintHandler(ConstraintI newConstraint,
                         BasicPolicyI newPolicy,
                         PonderMCimpl newPmc)

Constructor

Parameters:

newConstraint - The constraint associated with this Constraint Handler

Method Detail

evaluate

public java.util.Vector evaluate(PonderEventI event,
                                 java.util.Vector newTargets)

evalutes the constraint. Returns true/false depending on whether the constraint evaluates to true or false

Parameters:

event - The runtime event which triggered the evaluation of the constraint

evaluate

public java.util.Vector evaluate(ConstraintI constr,
                                 PonderEventI event)

Recursive Method used to evaluate the constraint

evalExpr

public ExprValue evalExpr(ExpressionI expr,
                          PonderEventI event,
                          java.rmi.Remote targetObj)

Evaluates an Expression.

Parameters:

targetConstraint. - The Target Constraint to evaluate