com.serotonin.mango.rt.dataImage

Class DataPointEventMulticaster

java.lang.Object

com.serotonin.mango.rt.dataImage.DataPointEventMulticaster

All Implemented Interfaces:

DataPointListener

public class DataPointEventMulticaster
extends java.lang.Object
implements DataPointListener

Field Summary

Fields

Modifier and Type	Field and Description
protected DataPointListener	a
protected DataPointListener	b
private static org.apache.commons.logging.Log	LOG

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DataPointEventMulticaster(DataPointListener a, DataPointListener b)

Method Summary

Modifier and Type	Method and Description
static DataPointListener	add(DataPointListener a, DataPointListener b)
private static int	getListenerCount(DataPointListener l)
static DataPointListener[]	getListeners(DataPointListener l)
void	pointBackdated(PointValueTime value) This method is called when a backdated value is received.
void	pointChanged(PointValueTime oldValue, PointValueTime newValue) This method is called every time the point gets a value that is different from its previous value (except for its initialization).
void	pointInitialized() This method is called for all existing listeners when the point is initialized.
void	pointSet(PointValueTime oldValue, PointValueTime newValue) This method is called every time the point gets set, whether the value changes or not.
void	pointTerminated() This method is called when the point has been terminated, allowing listeners to react as necessary.
void	pointUpdated(PointValueTime newValue) This method is called every time the point gets a value from somewhere (except for its initialization).
private static int	populateListenerArray(DataPointListener[] a, DataPointListener l, int index)
protected DataPointListener	remove(DataPointListener oldl)
static DataPointListener	remove(DataPointListener l, DataPointListener oldl)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final org.apache.commons.logging.Log LOG

a

protected final DataPointListener a

b

protected final DataPointListener b

Constructor Detail

DataPointEventMulticaster

protected DataPointEventMulticaster(DataPointListener a,
                                    DataPointListener b)

Method Detail

remove

protected DataPointListener remove(DataPointListener oldl)

add

public static DataPointListener add(DataPointListener a,
                                    DataPointListener b)

remove

public static DataPointListener remove(DataPointListener l,
                                       DataPointListener oldl)

getListenerCount

private static int getListenerCount(DataPointListener l)

populateListenerArray

private static int populateListenerArray(DataPointListener[] a,
                                         DataPointListener l,
                                         int index)

getListeners

public static DataPointListener[] getListeners(DataPointListener l)

pointChanged

public void pointChanged(PointValueTime oldValue,
                         PointValueTime newValue)

Description copied from interface: DataPointListener

This method is called every time the point gets a value that is different from its previous value (except for its initialization). This includes when the point is set, if the set changes the point's value.

Specified by:

pointChanged in interface DataPointListener

pointSet

public void pointSet(PointValueTime oldValue,
                     PointValueTime newValue)

Description copied from interface: DataPointListener

This method is called every time the point gets set, whether the value changes or not.

Specified by:

pointSet in interface DataPointListener

pointUpdated

public void pointUpdated(PointValueTime newValue)

Description copied from interface: DataPointListener

This method is called every time the point gets a value from somewhere (except for its initialization). This includes when the point changes or is set.

Specified by:

pointUpdated in interface DataPointListener

pointBackdated

public void pointBackdated(PointValueTime value)

Description copied from interface: DataPointListener

This method is called when a backdated value is received.

Specified by:

pointBackdated in interface DataPointListener

pointInitialized

public void pointInitialized()

Description copied from interface: DataPointListener

This method is called for all existing listeners when the point is initialized. Note that it is not called for listeners that have begun listening to an already-initialized point.

Specified by:

pointInitialized in interface DataPointListener

pointTerminated

public void pointTerminated()

Description copied from interface: DataPointListener

This method is called when the point has been terminated, allowing listeners to react as necessary.

Specified by:

pointTerminated in interface DataPointListener