Difference between revisions of "Extensions.EventHandling.CloseEventSource"
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{{DISPLAYTITLE: '''CloseEventSource'''}}[[Category:EventHandling]] | {{DISPLAYTITLE: '''CloseEventSource'''}}[[Category:EventHandling]] | ||
== Classification == | == Classification == | ||
| − | {{ClassificationActivity | CloseEventSource | Stops the event processing all specified sources | [[Action]]| [[Extensions. | + | {{ClassificationActivity | CloseEventSource | Stops the event processing all specified sources | [[Action]]| [[Extensions.EventHandling|OTX EventHandling extension]] | [[Extensions.EventHandling#Actions|EventHandling related actions]] | - | - }} |
== OTL Syntax == | == OTL Syntax == | ||
<syntaxhighlight lang="java" enclose="div" style="font-size: medium;"> | <syntaxhighlight lang="java" enclose="div" style="font-size: medium;"> | ||
| − | EventHandling.CloseEventSource( | + | EventHandling.CloseEventSource({EventSourceVariable[ ] source}); |
</syntaxhighlight> | </syntaxhighlight> | ||
== Description == | == Description == | ||
| − | The OTX '''CloseEventSource''' | + | The OTX '''CloseEventSource''' action will close and dispose given event sources. Closed event sources will no more queue any events. |
| + | |||
| + | Once closed, an event source can not be reopened. Using a closed event source e.g. in a [[Extensions.EventHandling.WaitForEvent|WaitForEvent]] action is an error and will cause an [[Core.DataTypes.ComplexDataType.InvalidReferenceException|otx:InvalidReferenceException]] (through the EventSourceValue term). | ||
| + | |||
| + | In case that '''CloseEventSource''' is applied to an event source which is already closed, the action will perform nothing (NOP) | ||
| + | |||
| + | {{Note|CAUTION — In [[Core.Actions.Parallel|Parallel]] execution, situations may occur where an event source gets closed by a '''CloseEventSource''' action while being used in a [[Extensions.EventHandling.WaitForEvent|WaitForEvent]] action (in another parallel lane). If the [[Extensions.EventHandling.WaitForEvent|WaitForEvent]] action has no other event sources registered, this will cause a deadlock situation. OTX authors need to avoid such situations by careful test sequence design and the usage of the [[Core.Actions.MutexGroup|MutexGroup]] node.}} | ||
== Properties == | == Properties == | ||
{| {{TableHeader}} | {| {{TableHeader}} | ||
{{TableRowPropertiesHeader}} | {{TableRowPropertiesHeader}} | ||
| − | {{ | + | {{TableRowPropertie2| Source | [[Extensions.EventHandling.EventSource|EventSource]] | [[Variable]] | - | [1] | This represents one or more variables which contain the event sources that will be closed.}} |
|} | |} | ||
== OTL Examples == | == OTL Examples == | ||
<syntaxhighlight lang="java" enclose="div" style="font-size: medium;"> | <syntaxhighlight lang="java" enclose="div" style="font-size: medium;"> | ||
| + | /// Local Declarations | ||
| + | |||
Integer Variable1 = 0; | Integer Variable1 = 0; | ||
EventHandling.Event Event1; | EventHandling.Event Event1; | ||
EventHandling.EventSource EventSource1; | EventHandling.EventSource EventSource1; | ||
| + | |||
| + | |||
| + | /// Flow | ||
EventSource1 = EventHandling.MonitorChangeEventSource(Variable1); | EventSource1 = EventHandling.MonitorChangeEventSource(Variable1); | ||
| Line 30: | Line 41: | ||
== See also == | == See also == | ||
| − | [[Extensions.EventHandling.Sleep|Sleep]] | + | [[Extensions.EventHandling.Sleep|Sleep]] <br/> |
| + | [[Extensions.EventHandling.WaitForEvent|WaitForEvent]] | ||
Latest revision as of 10:35, 12 September 2019
Classification
| Name | CloseEventSource |
| Short Description | Stops the event processing all specified sources |
| Class | Action |
| Extension | OTX EventHandling extension |
| Group | EventHandling related actions |
| Exceptions | - |
| Checker Rules | - |
| Standard Compliant | Yes |
OTL Syntax
EventHandling.CloseEventSource({EventSourceVariable[ ] source});Description
The OTX CloseEventSource action will close and dispose given event sources. Closed event sources will no more queue any events.
Once closed, an event source can not be reopened. Using a closed event source e.g. in a WaitForEvent action is an error and will cause an otx:InvalidReferenceException (through the EventSourceValue term).
In case that CloseEventSource is applied to an event source which is already closed, the action will perform nothing (NOP)
CAUTION — In Parallel execution, situations may occur where an event source gets closed by a CloseEventSource action while being used in a WaitForEvent action (in another parallel lane). If the WaitForEvent action has no other event sources registered, this will cause a deadlock situation. OTX authors need to avoid such situations by careful test sequence design and the usage of the MutexGroup node.
Properties
| Name | Data Type | Class | Default | Cardinality | Description |
| Source | EventSource | Variable | - | [1] | This represents one or more variables which contain the event sources that will be closed. |
OTL Examples
/// Local Declarations
Integer Variable1 = 0;
EventHandling.Event Event1;
EventHandling.EventSource EventSource1;
/// Flow
EventSource1 = EventHandling.MonitorChangeEventSource(Variable1);
Variable1 = Variable1 + 1;
EventHandling.WaitForEvent({EventSource1}, Event1);
EventHandling.CloseEventSource({EventSource1});