Package com.inductiveautomation.perspective.gateway.expression

Class BoundPropertyExpression

java.lang.Object

com.inductiveautomation.ignition.common.expressions.AbstractExpression

com.inductiveautomation.perspective.gateway.expression.BoundPropertyExpression

All Implemented Interfaces:

Expression

public class BoundPropertyExpression
extends AbstractExpression

Field Summary

Fields inherited from class com.inductiveautomation.ignition.common.expressions.AbstractExpression

children, context, updateListener

Constructor Summary

Constructors

Constructor	Description
BoundPropertyExpression(PerspectiveElement component, String path)

Method Summary

Modifier and Type	Method	Description
QualifiedValue	execute()	Compute and return the value of this expression
String	getOpName()	Return a human-readable name for the operation that this expression performs
PropertyReference	getPropReference()
Class<?>	getType()	Return the type that this expression will return
void	shutdown()	Tells the expression to shutdown any polling operations.
void	startup()	Tells the expression to startup any polling operations.

Methods inherited from class com.inductiveautomation.ignition.common.expressions.AbstractExpression

connect, disconnect, getChildren, setChildren

Methods inherited from class java.lang.Object

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

Constructor Details

BoundPropertyExpression

public BoundPropertyExpression(PerspectiveElement component,
 String path)

Method Details

getPropReference

public PropertyReference getPropReference()

execute

@Nonnull
public QualifiedValue execute()

Description copied from interface: Expression

Compute and return the value of this expression

getType

public Class<?> getType()

Description copied from interface: Expression

Return the type that this expression will return

getOpName

public String getOpName()

Description copied from interface: Expression

Return a human-readable name for the operation that this expression performs

startup

public void startup()

Description copied from interface: Expression

Tells the expression to startup any polling operations. Expressions that use this can remember the updateListener from connect() to feed update notification to.

Specified by:

startup in interface Expression

Overrides:

startup in class AbstractExpression

shutdown

public void shutdown()

Description copied from interface: Expression

Tells the expression to shutdown any polling operations.

Specified by:

shutdown in interface Expression

Overrides:

shutdown in class AbstractExpression