edu.UCL.xmiddle.appRegistry
Class XMLAccessPolicy

java.lang.Object
  |
  +--edu.UCL.xmiddle.appRegistry.XMLAccessPolicy

All Implemented Interfaces:

AccessPolicy

public class XMLAccessPolicy

extends java.lang.Object

implements AccessPolicy

XMLAccessPolicy.java AccessPolicy API. This is used to change the access rights to a Document. It dissallows changing access to elements that we do not know. Created: Thu Jul 26 13:16:37 2001

Field Summary

Fields inherited from interface edu.UCL.xmiddle.framework.appRegistry.AccessPolicy

DENY, FULL, READ, READ_SHARE, WRITE

Constructor Summary

XMLAccessPolicy(org.w3c.dom.Document document, java.lang.Object appID)
Creates a new XMLAccessPolicy instance.

Method Summary

short	getPolicy(org.w3c.dom.Element element, java.lang.Object primaryID) Returns the policy set for the given element and the given host
static void	setLinkTable(LinkTable links) Gives a reference to the local LinkTable This is used to find out if an element is local or not
boolean	setPolicy(org.w3c.dom.Element element, short policy, java.lang.Object primaryID) Sets the policy for the given element, for the given host.
java.lang.String	toString() Returns the access policy data as a String.

Methods inherited from class java.lang.Object

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

Constructor Detail

XMLAccessPolicy

public XMLAccessPolicy(org.w3c.dom.Document document,
                       java.lang.Object appID)

Creates a new XMLAccessPolicy instance.

Parameters:

document - The initial policy document

appID - The id of the application that owns this policy

Method Detail

toString

public java.lang.String toString()

Returns the access policy data as a String. Simply walks through the tree printing all nodes, and returns the result as a String

Specified by:

toString in interface AccessPolicy

Overrides:

toString in class java.lang.Object

Returns:

getPolicy

public short getPolicy(org.w3c.dom.Element element,
                       java.lang.Object primaryID)

Returns the policy set for the given element and the given host

Specified by:

getPolicy in interface AccessPolicy

Parameters:

element - The element for which we're searching the policy

primaryID - The primary ID of the host for which the policy is requested. This is expected to be a string.

Returns:

The policy

setPolicy

public boolean setPolicy(org.w3c.dom.Element element,
                         short policy,
                         java.lang.Object primaryID)

Sets the policy for the given element, for the given host. It will be denied if the local host does not own the given element

Specified by:

setPolicy in interface AccessPolicy

Parameters:

element - The element for which we wish to set a policy

policy - The actual policy

primaryID - The primaryID of the host for which we wish to set this policy. This is expected to be a String

Returns:

TRUE if the operation succeeded or false otherwise (for exmample the element does not belong to the local host)

setLinkTable

public static void setLinkTable(LinkTable links)

Gives a reference to the local LinkTable This is used to find out if an element is local or not

Parameters:

links - a LinkTable value