Package com.inductiveautomation.ignition.common.expressions

Class SubscriptExpression

java.lang.Object

com.inductiveautomation.ignition.common.expressions.AbstractExpression

com.inductiveautomation.ignition.common.expressions.SubscriptExpression

All Implemented Interfaces:

Expression

public class SubscriptExpression
extends AbstractExpression

This expression takes a reference to an array, dataset, collection, or map and subscripts inside it to pull out a value, like: {dataset}[0,5]

Field Summary

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

children, context, updateListener

Constructor Summary

Constructors

Constructor	Description
SubscriptExpression()
SubscriptExpression(Expression e, Expression sub1)
SubscriptExpression(Expression e, Expression sub1, Expression sub2)

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

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

connect, disconnect, getChildren, setChildren, shutdown, startup

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.expressions.Expression

getType

Constructor Details

SubscriptExpression

public SubscriptExpression(Expression e,
 Expression sub1)

SubscriptExpression

public SubscriptExpression(Expression e,
 Expression sub1,
 Expression sub2)

SubscriptExpression

public SubscriptExpression()

Method Details

execute

@Nonnull
public QualifiedValue execute()
                       throws ExpressionException

Description copied from interface: Expression

Compute and return the value of this expression

Throws:

ExpressionException

getOpName

public String getOpName()

Description copied from interface: Expression

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