jif.lang
Class WriterPolicy

java.lang.Object
  jif.lang.AbstractPolicy
      jif.lang.WriterPolicy

All Implemented Interfaces:

IntegPolicy, Policy

public class WriterPolicy
extends AbstractPolicy
implements IntegPolicy

Field Summary

Fields inherited from class jif.lang.AbstractPolicy

labelUtil

Constructor Summary

WriterPolicy(LabelUtil labelUtil, Principal owner, Principal writer)

Method Summary

boolean	equals(java.lang.Object o)
int	hashCode()
IntegPolicy	join(IntegPolicy p)
IntegPolicy	join(IntegPolicy p, java.util.Set s) Return the join of this policy and p.
IntegPolicy	meet(IntegPolicy p)
IntegPolicy	meet(IntegPolicy p, java.util.Set s) Return the meet of this policy and p.
Principal	owner()
boolean	relabelsTo(Policy p, java.util.Set s) Does this policy relabel to policy p? If this method returns true, then all delegations that this result depend upon (i.e., DelegationPairs) should be added to the set s.
java.lang.String	toString()
Principal	writer()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

WriterPolicy

public WriterPolicy(LabelUtil labelUtil,
                    Principal owner,
                    Principal writer)

Method Detail

owner

public Principal owner()

writer

public Principal writer()

relabelsTo

public boolean relabelsTo(Policy p,
                          java.util.Set s)

Description copied from interface: Policy

Does this policy relabel to policy p? If this method returns true, then all delegations that this result depend upon (i.e., DelegationPairs) should be added to the set s. If this method returns false, then the set is not altered at all.

Specified by:

relabelsTo in interface Policy

Returns:

hashCode

public int hashCode()

Specified by:

hashCode in class AbstractPolicy

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in class AbstractPolicy

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

join

public IntegPolicy join(IntegPolicy p,
                        java.util.Set s)

Description copied from interface: IntegPolicy

Return the join of this policy and p. The set s contains all delegations (i.e., DelegationPairs) that this join result depends upon.

Specified by:

join in interface IntegPolicy

meet

public IntegPolicy meet(IntegPolicy p,
                        java.util.Set s)

Description copied from interface: IntegPolicy

Return the meet of this policy and p. The set s contains all delegations (i.e., DelegationPairs) that this meet result depends upon.

Specified by:

meet in interface IntegPolicy

join

public IntegPolicy join(IntegPolicy p)

Specified by:

join in interface IntegPolicy

meet

public IntegPolicy meet(IntegPolicy p)

Specified by:

meet in interface IntegPolicy