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  • Added in Builder 6.0

A Scheduler service (in this example SchedulerService) has no external interface; the class resident on the <<SchedulerService>> contains no operation. This class (Scheduler) must have the stereotype <<E2EScheduler>>; that is, the class must be a Scheduler.

There is one exception, when a Scheduler service has an external interface: This is a trace interface, which is a SOAP interface to the activity assigned to Scheduler class for debugging purposes. The compiler generates automatically the shadow interface and the corresponding shadow service when compiling the service. The E2E Analyzer and the E2E Interactive Debugger display the interface as a SOAP operation (for more information see Testing of Non-SOAP Services)

Figure: Scheduler Component Diagram

The SchedulerExample composite contains a Scheduler service (SchedulerService). The Scheduler service artifact contains a Scheduler class (Scheduler).

The Scheduler has the following tagged values that define, when a Scheduler event handler is executed.

Tagged ValuePossible EntriesDefault

allowParallelExecutions

If true (default), each time a scheduler pattern matches, the scheduler activity diagram is executed - even if another execution is already running.
If false, the next execution cycle is suppressed, if an activity diagram is already being run.
true
years(s)positive and negative integers or a pattern*
month(s)1 to 12 or a pattern*
weekday(s)Mon(day), Tue(sday), Wed(nesday), Thur(sday), Fri(day), Sat(urday), Sun(day), or a pattern*
day(s)1 to 28, 29, 30, or 31 depending on the month or a pattern*
hour(s)0 to 23 or a pattern*
minute(s)0 to 59 or a pattern0
seconds0 to 59 or a pattern 

For explanations on date time patterns refer to Date Time Patterns.

Following the explanation of the tagged values above, the Scheduler defined in the component diagram above executes the activity each hour between 8 am and 8 pm (hour(s) = "8-20"), but only from Monday until Friday (weekdays = "Mon - Fri"). Tagged values that are specified with "*" are not displayed on the class.

Depending on the location of the E2E Runtime, the value of hour(s) may differ from your local time. Even if the Bridge is located in the same time zone as your workstation, the time used by the scheduler to match the patterns depends on whether the Bridge uses UTC or local time. Which time zone is to be used, can be configured in the E2E xUML Runtime.

Scheduler Components and Deployment of E2E Builder Version 5.1

  • Deprecated since Builder 6.0
 Click here to read the documentation of the component diagram used in E2E Builder releases before 6.0 ...

Figure: Scheduler Component Diagram of E2E Bridge Version 5.1

The Scheduler composite deployment contains a Scheduler service artifact (SchedulerServiceArtifact). The Scheduler service artifact contains a Scheduler class artifact (SchedulerArtifact).

The Scheduler has the following tagged values that define, when a Scheduler event handler is executed.

Tagged ValuePossible EntriesDefault
minute(s)

0 to 59 or a pattern

0

hour(s)

0 to 23 or a pattern

*

day(s)

1 to 28, 29, 30, or 31 depending on the month or a pattern

*

weekday(s)

Mon(day), Tue(sday), Wed(nesday), Thur(sday), Fri(day), Sat(urday), Sun(day), or a pattern

*

month(s)

1 to 12 or a pattern

*

years(s)

positive and negative integers or a pattern

*

Following the explanation of the tagged values above, the Scheduler defined in the component diagram above executes the activity each hour (hour(s) = *), on the 50th minute (minute(s) = 50), each year (year(s) = *), and each month (month(s) = *), but only from Monday until Friday (weekdays = Mon -€“ Fri).

Depending on the location of the E2E Runtime, the value of hour(s) may differ from your local time. Even if the Server is located in the same time zone as your workstation, the time used by the scheduler to match the patterns depends on whether the Server uses UTC or local time. Which time zone is to be used, can be configured in the E2E Runtime.

The deployment diagram Scheduler Deployment Diagram shows only one node: the E2E Server node. Because the file system backend service (FileSystemService) runs on the Server, there is no additional backend node. Therefore, the Server has two assigned stereotypes: <<E2EBridgeServerInstance>> and <<BackendServerInstance>> , because this node acts as E2E Server and backend server at the same time.

In the deployment diagram, you specify components to be deployed; the component diagram defines the components. Deployment means instantiating components, and annotating all configuration information to run these components, on their target systems.

Figure: Scheduler Deployment Diagram

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