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Scheduler
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Specifies the scheduler type for this inbound communication.
There are two options:
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Timer Service:
The task is scheduled through the J2EE Timer Service. Timer Service
is supported by J2EE.
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Work Manager: The
task is scheduled through the J2EE Work Manager. Work Manager is supported
by J2EE (JCA 1.5 and above).
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Select Timer Service or Work Manager.
If your container doesn’t support JCA Work Manager, select Timer Service.
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Schedule Type
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This property configuration, though visible from the Properties
Editor, is disabled. The only available schedule type is Repeated,
indicating that the task is scheduled for repeated execution at regular
intervals defined by the Period property
in this section (see the Period property).
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This field is not enabled.
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Delay
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Applies to both the Timer Service or
the Work Manager. Specifies, in
milliseconds, the length of delay time before the task is executed.
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An integer indicating the length of time before the task is
executed, in milliseconds.
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Period
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Applies to both the Timer Service or
the Work Manager. Specifies the
regular interval, in milliseconds, between successive task executions.
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An integer indicating the length of time between successive
task executions, in milliseconds.
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At Fixed Rate
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Specific to the Timer Service configuration
only. Specifies whether a Fixed-Rate execution
or Fixed-Delay execution is used.
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Fixed-Rate: A fixed-rate
execution means that each execution is scheduled relative to the scheduled
time of the initial execution. If an execution is delayed for any
reason (such as garbage collection or other background activity),
two or more executions will occur in rapid succession to “catch
up.” In the long run, the frequency of execution will be exactly
the reciprocal of the specified period, assuming the system clock
underlying Object.wait(long) is accurate.
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Fixed-Delay: A
fixed-delay execution means that each execution is scheduled relative
to the actual time of the previous execution. If an execution is delayed
for any reason (such as garbage collection or other background activity),
subsequent executions will be delayed as well. As a result, the frequency
of execution will generally be slightly lower than the reciprocal
of the specified period, assuming the system clock underlying Object.wait(long)
is accurate.
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Select True or False.
True indicates that a fixed-rate
execution is used. False indicates
that a fixed-delay execution is used.
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