cgl.narada.matching.xmlxpath
Class XPathMatching

java.lang.Object
  cgl.narada.matching.xmlxpath.XPathMatching

All Implemented Interfaces:

MatchingTree, XPathMatchingDebugFlags

public class XPathMatching
extends Object
implements MatchingTree, XPathMatchingDebugFlags

This class implements the XPATH matching algorithm. This provides methods to add a subscription and also to remove interest in a subscription predicate. The matching algorithm should also be able to compute destinations.

Field Summary

Fields inherited from interface cgl.narada.matching.xmlxpath.XPathMatchingDebugFlags

ClientXPathMatching_Debug, XPathMatching_Debug, XPathProfile_Debug

Constructor Summary

XPathMatching(int unitLevel, int systemLevel, ProfilePropagationProtocol profilePropagationProtocol)
The XPathMatching constructor

Method Summary

void	addSubscriptionProfile(Profile profile) This method adds a subscription predicate to the matching tree
boolean	documentMatchesXPathQuery(Document document, String xpath)
int	getManagedProfileType() Returns the type of profiles managed by this matching engine
int	getMatchingLevel() This method returns the level assocaited with this matching tree.
static void	main(String[] args)
Object	matchEvent(NBEvent nbEvent) This method return the destinations assocaited with an event that needs to be matched to the matching tree
void	propagateChangesToHigherLevels(Profile profile, boolean addProfile) Propagates profile changes to higher levels
void	removeSubscriptionProfile(Profile profile) This method removes a subscription predicate to the matching tree
void	setNodeDestination(Destinations destination) This method sets the destination address for this node

Methods inherited from class java.lang.Object

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

Constructor Detail

XPathMatching

public XPathMatching(int unitLevel,
                     int systemLevel,
                     ProfilePropagationProtocol profilePropagationProtocol)

The XPathMatching constructor

Method Detail

getMatchingLevel

public int getMatchingLevel()

This method returns the level assocaited with this matching tree. A node could be a gateway at multiple levels. How it handles destinations at different levels, and propagates destinations at different levels is dicatated by the level of the matching tree which computes the destinations and initiates profile propagation changes.

Specified by:

getMatchingLevel in interface MatchingTree

Returns:

The level of the matching tree.

setNodeDestination

public void setNodeDestination(Destinations destination)

This method sets the destination address for this node

Specified by:

setNodeDestination in interface MatchingTree

addSubscriptionProfile

public void addSubscriptionProfile(Profile profile)

This method adds a subscription predicate to the matching tree

Specified by:

addSubscriptionProfile in interface MatchingTree

Parameters:

profile - The predicate comprising the subscription and the destination assocaited with the subscription.

removeSubscriptionProfile

public void removeSubscriptionProfile(Profile profile)

This method removes a subscription predicate to the matching tree

Specified by:

removeSubscriptionProfile in interface MatchingTree

Parameters:

profile - The predicate comprising the subscription and the destination assocaited with the subscription.

propagateChangesToHigherLevels

public void propagateChangesToHigherLevels(Profile profile,
                                           boolean addProfile)

Description copied from interface: MatchingTree

Propagates profile changes to higher levels

Specified by:

propagateChangesToHigherLevels in interface MatchingTree

matchEvent

public Object matchEvent(NBEvent nbEvent)

This method return the destinations assocaited with an event that needs to be matched to the matching tree

Specified by:

matchEvent in interface MatchingTree

Returns:

The destination as an INT

documentMatchesXPathQuery

public boolean documentMatchesXPathQuery(Document document,
                                         String xpath)

getManagedProfileType

public int getManagedProfileType()

Returns the type of profiles managed by this matching engine

Specified by:

getManagedProfileType in interface MatchingTree

main

public static void main(String[] args)