com.jrefinery.data
Class AbstractDataset

java.lang.Object
  com.jrefinery.data.AbstractDataset

All Implemented Interfaces:

Dataset

Direct Known Subclasses:

AbstractSeriesDataset, DefaultMeterDataset, DefaultPieDataset, DefaultValueDataset, JdbcXYDataset, SiamDataset

public abstract class AbstractDataset
extends java.lang.Object
implements Dataset

An abstract implementation of the Dataset interface, containing a mechanism for registering change listeners.

Field Summary

protected java.util.List

listeners Storage for registered change listeners.

Constructor Summary

protected

AbstractDataset() Constructs a dataset.

Method Summary

void	addChangeListener(DatasetChangeListener listener) Registers an object for notification of changes to the dataset.
protected void	fireDatasetChanged() Notifies all registered listeners that the dataset has changed.
protected void	notifyListeners(DatasetChangeEvent event) Notifies all registered listeners that the dataset has changed.
void	removeChangeListener(DatasetChangeListener listener) Deregisters an object for notification of changes to the dataset.

Methods inherited from class java.lang.Object

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

Field Detail

listeners

protected java.util.List listeners

Storage for registered change listeners.

Constructor Detail

AbstractDataset

protected AbstractDataset()

Constructs a dataset.

Method Detail

addChangeListener

public void addChangeListener(DatasetChangeListener listener)

Registers an object for notification of changes to the dataset.

Specified by:

addChangeListener in interface Dataset

Parameters:

listener - The object to register.

removeChangeListener

public void removeChangeListener(DatasetChangeListener listener)

Deregisters an object for notification of changes to the dataset.

Specified by:

removeChangeListener in interface Dataset

Parameters:

listener - The object to deregister.

fireDatasetChanged

protected void fireDatasetChanged()

Notifies all registered listeners that the dataset has changed.

notifyListeners

protected void notifyListeners(DatasetChangeEvent event)

Notifies all registered listeners that the dataset has changed.

Parameters:

event - Contains information about the event that triggered the notification.