org.openanzo.client
Class TrackerManager

java.lang.Object
  org.openanzo.client.TrackerManager

public class TrackerManager
extends java.lang.Object

The trackerManager keeps track of trackers, and provides indexer matching to find trackers that match statements.

Author:

Matthew Roy ( mroy@cambridgesemantics.com )

Constructor Summary

TrackerManager()
Create a new TrackerManager

Method Summary

void	addTracker(ISerializableTracker tracker) Add a new tracker and index it
void	clear() Clear the contents of trackers and all indexes.
boolean	containsTracker(ISerializableTracker tracker) Determine if the manager contains this tracker
ISerializableTracker	getTracker(ISerializableTracker tracker) Get the tracker that matches the provided tracker
java.util.Collection<ISerializableTracker>	getTrackers() Get the collection of trackers in the manager
java.util.Collection<ISerializableTracker>	matchingTrackers(org.openrdf.model.Resource subj, org.openrdf.model.URI prop, org.openrdf.model.Value obj, org.openrdf.model.Resource context) Find the set of trackers that match the statement
void	removeTracker(ISerializableTracker tracker) Remove a tracker and remove it from the indexes
int	size() Get the size of the trackers

Methods inherited from class java.lang.Object

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

Constructor Detail

TrackerManager

public TrackerManager()

Create a new TrackerManager

Method Detail

clear

public void clear()

Clear the contents of trackers and all indexes.

containsTracker

public boolean containsTracker(ISerializableTracker tracker)

Determine if the manager contains this tracker

Parameters:

tracker -

Returns:

true if the manager contains this tracker

getTracker

public ISerializableTracker getTracker(ISerializableTracker tracker)

Get the tracker that matches the provided tracker

Parameters:

tracker - tracker to look for

Returns:

tracker currently stored that matches provided tracker

size

public int size()

Get the size of the trackers

Returns:

the size of the trackers

getTrackers

public java.util.Collection<ISerializableTracker> getTrackers()

Get the collection of trackers in the manager

Returns:

the collection of trackers in the manager

addTracker

public void addTracker(ISerializableTracker tracker)

Add a new tracker and index it

Parameters:

tracker - to add

removeTracker

public void removeTracker(ISerializableTracker tracker)

Remove a tracker and remove it from the indexes

Parameters:

tracker - to add

matchingTrackers

public java.util.Collection<ISerializableTracker> matchingTrackers(org.openrdf.model.Resource subj,
                                                                   org.openrdf.model.URI prop,
                                                                   org.openrdf.model.Value obj,
                                                                   org.openrdf.model.Resource context)

Find the set of trackers that match the statement

Parameters:

subj - subject of statement

prop - property of statement

obj - object of statement

context - context of statement

Returns:

set of trackers that match statement