issrg.pba.rbac.policies
Class IntersectionSubtree

java.lang.Object
  issrg.pba.rbac.policies.IntersectionSubtree

All Implemented Interfaces:

Subtree

public class IntersectionSubtree
extends java.lang.Object
implements Subtree

This class is an intersection of two subtrees. An entry is contained in the IntersectionSubtree, if it is contained in all the subtrees that it is an intersection of.

Field Summary

protected Subtree	tree1
protected Subtree	tree2

Constructor Summary

protected	IntersectionSubtree()
	IntersectionSubtree(Subtree t1, Subtree t2) This constructor builds an IntersectionSubtree, given two Subtrees.

Method Summary

boolean	contains(Entry e) This method tells whether the given Entry is contained in the Intersection of the two Subtrees passed to the constructor.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

tree1

protected Subtree tree1

tree2

protected Subtree tree2

Constructor Detail

IntersectionSubtree

protected IntersectionSubtree()

IntersectionSubtree

public IntersectionSubtree(Subtree t1,
                           Subtree t2)

This constructor builds an IntersectionSubtree, given two Subtrees. Both of the subtrees are treated equally.

Parameters:

t1 - - one Subtree

t2 - - another Subtree

Method Detail

contains

public boolean contains(Entry e)

This method tells whether the given Entry is contained in the Intersection of the two Subtrees passed to the constructor.

Specified by:

contains in interface Subtree

Parameters:

e - - the Entry to test

Returns:

true, if and only if the Entry is contained in both Subtrees; otherwise false

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object