Package com.inductiveautomation.ignition.common.expressions

Class TagListener

java.lang.Object

com.inductiveautomation.ignition.common.expressions.TagListener

All Implemented Interfaces:

TagChangeListener, EventListener

Direct Known Subclasses:

ExpressionBindingTagListener

public class TagListener
extends Object
implements TagChangeListener

A class that can listen for tag changes and notify an InteractionListener. It also holds the last value seen internally and will serialize it.

Constructor Summary

Constructors

Constructor	Description
TagListener()
TagListener(TagPath path, QualifiedValue qv)
TagListener(TagPath path, Object value, QualityCode quality)

Method Summary

Modifier and Type	Method	Description
TagPath	_getTagPath()
void	_setTagPath(TagPath path)
protected TagManager	getTagManager()
String	getTagPath()
QualifiedValue	getTagQualifiedValue()
protected void	reSubscribe()
void	setQValue(BasicQualifiedValue bqv)	Deprecated.
void	setQValue(BasicQualifiedValue bqv)	Deprecated.
void	setQValue(BasicTagValue btv)	Deprecated.
void	setTagPath(String tagPath)
void	setTagQualifiedValue(QualifiedValue value)
void	setTagValue(BasicTagValue value)	Deprecated.
void	shutdown()
void	startup(CommonContext context, InteractionListener listener)
void	tagChanged(TagChangeEvent e)	Invoked when the tag has changed

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.inductiveautomation.ignition.common.tags.model.event.TagChangeListener

getSecurityContext, isLightweight

Constructor Details

TagListener

public TagListener(TagPath path,
 Object value,
 QualityCode quality)

TagListener

public TagListener(TagPath path,
 QualifiedValue qv)

TagListener

public TagListener()

Method Details

tagChanged

public void tagChanged(TagChangeEvent e)

Description copied from interface: TagChangeListener

Invoked when the tag has changed

Specified by:

tagChanged in interface TagChangeListener

Parameters:

e - a ChangeEvent object

startup

public void startup(CommonContext context,
 InteractionListener listener)

shutdown

public void shutdown()

reSubscribe

protected void reSubscribe()

getTagManager

protected TagManager getTagManager()

_getTagPath

public TagPath _getTagPath()

_setTagPath

public void _setTagPath(TagPath path)

getTagPath

public String getTagPath()

setTagPath

public void setTagPath(String tagPath)

getTagQualifiedValue

public QualifiedValue getTagQualifiedValue()

setTagQualifiedValue

public void setTagQualifiedValue(QualifiedValue value)

setTagValue

@Deprecated
public void setTagValue(BasicTagValue value)

Deprecated.

setQValue

@Deprecated
public void setQValue(BasicTagValue btv)

Deprecated.

setQValue

@Deprecated
public void setQValue(BasicQualifiedValue bqv)

Deprecated.

setQValue

@Deprecated
public void setQValue(BasicQualifiedValue bqv)

Deprecated.