Extensions.EventHandling.GetNewValue

Classification

Name	GetNewValue
Short Description	Return the value that was stored in the given event
Class	Term
Extension	OTX EventHandling extension
Group	Event source property related terms
Exceptions	TypeMismatchException
Checker Rules	-
Standard Compliant	Yes

OTL Syntax

Variable = EventHandling.GetNewValue(EventTerm);

Description

The OTX GetNewValue term applies only to events that are triggered by a monitor change event source or one of its descendants. The term is return the value that was stored in the given event. This value represents a snapshot of the new value of the monitored variables at the time when the event was triggered. The term is useful to find out what new value has a variable after it has changed.

Because of it the data type of the variable, the monitor change by event source depends was monitored, the return type is getNewValue usually not known at the authors. Therefore, type-safety of this term not be verified statically. Runtime exceptions can occur if the results of that term in the wrong place, for example when using. otx:ToInteger to a value that can not be converted to integer.

Return Value

The Term returns the value, see table below.

In OTX, Terms are categorized according to its return data type!

Data Type	Description
Variable	The value that was stored in the given event.

Properties

Name	Data Type	Class	Default	Cardinality	Description
Event	Event	Term	-	[1]	The monitor change event from which you want to return the new value of the formerly monitored variables at the time of the change in value.

OTL Examples

EventHandling.Event Event1;
String Variable1 = "String";
String Result1;
EventHandling.EventSource EventSource1;

EventSource1 = EventHandling.MonitorChangeEventSource(Variable1);

parallel
{
	lane
	{
		EventHandling.WaitForEvent({EventSource1}, Event1);
	}
	lane
	{
		Variable1 = "String changed";
	}
}

Result1 = EventHandling.GetNewValue(Event1);

See also

IsMonitorChangeEvent
IsTresholdExceededEvent
IsTimerExpiredEvent