org.openanzo.model.event
Class AccumulatingEventManager

java.lang.Object
  org.openanzo.model.event.AccumulatingEventManager

All Implemented Interfaces:

INamedGraphEventManager

public class AccumulatingEventManager
extends java.lang.Object
implements INamedGraphEventManager

This event manager keeps track of the changes that take place during a transaction or replication, and batches the changes so that clients can choose to process the changes as a whole, instead of individual events.

Author:

Christopher R. Vincent, Matthew Roy ( mroy@cambridgesemantics.com )

Constructor Summary

AccumulatingEventManager(INamedGraph parentGraph)
Create a new event manager for a NamedGraph

Method Summary

boolean	listening() Return true if there are listeners
void	notifyAddStatements(org.openrdf.model.Statement... statements) Notify listeners that statements where added
void	notifyDeleteStatements(org.openrdf.model.Statement... statements) Notify listeners that statements where deleted
void	notifyEvent(IEvent event) Keep track of transactions and replication events in order to batch changes
void	registerListener(INamedGraphListener listener) Register a listener
void	unregisterListener(INamedGraphListener listener) Unregister a listener

Methods inherited from class java.lang.Object

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

Constructor Detail

AccumulatingEventManager

public AccumulatingEventManager(INamedGraph parentGraph)

Create a new event manager for a NamedGraph

Parameters:

parentGraph - source of event

Method Detail

registerListener

public void registerListener(INamedGraphListener listener)

Register a listener

Specified by:

registerListener in interface INamedGraphEventManager

Parameters:

listener - INamedGraphListener to register

unregisterListener

public void unregisterListener(INamedGraphListener listener)

Unregister a listener

Specified by:

unregisterListener in interface INamedGraphEventManager

Parameters:

listener - INamedGraphListener to unregister

listening

public boolean listening()

Return true if there are listeners

Returns:

true if there are listeners

notifyEvent

public void notifyEvent(IEvent event)

Keep track of transactions and replication events in order to batch changes

Specified by:

notifyEvent in interface INamedGraphEventManager

Parameters:

event - Event to which listeners should be notified

notifyAddStatements

public void notifyAddStatements(org.openrdf.model.Statement... statements)

Description copied from interface: INamedGraphEventManager

Notify listeners that statements where added

Specified by:

notifyAddStatements in interface INamedGraphEventManager

Parameters:

statements - Added statements to which listeners should be notified

notifyDeleteStatements

public void notifyDeleteStatements(org.openrdf.model.Statement... statements)

Description copied from interface: INamedGraphEventManager

Notify listeners that statements where deleted

Specified by:

notifyDeleteStatements in interface INamedGraphEventManager

Parameters:

statements - Deleted statements to which listeners should be notified