issrg.pba.rbac
Class AdjustedPeriodCollection

java.lang.Object
  issrg.pba.rbac.SubsetCredentials
      issrg.pba.rbac.DefaultValidityPeriodBehaviour
          issrg.pba.rbac.RelativeValidityPeriod
              issrg.pba.rbac.AdjustedValidityPeriod
                  issrg.pba.rbac.AdjustedPeriodCollection

All Implemented Interfaces:

Credentials, ValidityPeriod, java.lang.Cloneable

public class AdjustedPeriodCollection
extends AdjustedValidityPeriod

This is a collection of periods that are applied together. This is an advanced implementation of intersection. Normally the IntersectionValidityPeriod produces the validity period that is just a set of the latest notBefore and the earliest notAfter, which is good for constraining. However, Age and Min cannot be implemented this way, because if the ValidityPeriod exceeds one of the margins, it is fully invalid, and not just constrained.

Author:

A.Otenko

Field Summary

Fields inherited from class issrg.pba.rbac.AdjustedValidityPeriod

age, maxSpan, minSpan

Fields inherited from class issrg.pba.rbac.RelativeValidityPeriod

na, nb, notAfter, theClock, unlimited

Constructor Summary

protected	AdjustedPeriodCollection()
	AdjustedPeriodCollection(ValidityPeriod vp1, ValidityPeriod vp2) This constructor builds a AdjustedPeriodCollection of two ValidityPeriods.

Method Summary

ValidityPeriod	adjust(ValidityPeriod vp) This method returns an adjusted ValidityPeriod, where the collection of ValidityPeriods provided at construction time is adjusted against the given ValidityPeriod.
java.lang.String	toString()

Methods inherited from class issrg.pba.rbac.AdjustedValidityPeriod

intersection

Methods inherited from class issrg.pba.rbac.RelativeValidityPeriod

clone, getNotAfter, getNotBefore

Methods inherited from class issrg.pba.rbac.DefaultValidityPeriodBehaviour

contains

Methods inherited from class issrg.pba.rbac.SubsetCredentials

equals, union

Methods inherited from class java.lang.Object

finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface issrg.pba.Credentials

union

Constructor Detail

AdjustedPeriodCollection

protected AdjustedPeriodCollection()

AdjustedPeriodCollection

public AdjustedPeriodCollection(ValidityPeriod vp1,
                                ValidityPeriod vp2)

This constructor builds a AdjustedPeriodCollection of two ValidityPeriods. More ValidityPeriods can be added to the collection by chaining multiple AdjustedPeriodCollection as a binary tree. Both ValidityPeriods are treated equally.

Parameters:

vp1 - - one ValidityPeriod

vp2 - - another ValidityPeriod

Method Detail

adjust

public ValidityPeriod adjust(ValidityPeriod vp)

This method returns an adjusted ValidityPeriod, where the collection of ValidityPeriods provided at construction time is adjusted against the given ValidityPeriod.

Overrides:

adjust in class AdjustedValidityPeriod

Parameters:

vp - - the ValidityPeriod to adjust against

toString

public java.lang.String toString()

Overrides:

toString in class AdjustedValidityPeriod