java.lang.Object | |
↳ | org.springframework.scheduling.concurrent.ScheduledExecutorTask |
JavaBean that describes a scheduled executor task, consisting of the Runnable and a delay plus period. The period needs to be specified; there is no point in a default for it.
The JDK 1.5 ScheduledExecutorService
does
not offer more sophisticated scheduling options such as cron expressions.
Consider using Quartz for such advanced needs.
Note that the ScheduledExecutorService
mechanism
uses a Runnable
instance that is shared between repeated executions,
in contrast to Quartz which creates a new Job instance for each execution.
Public Constructors | |||||||||||
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Create a new ScheduledExecutorTask,
to be populated via bean properties.
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Create a new ScheduledExecutorTask, with default
one-time execution without delay.
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Create a new ScheduledExecutorTask, with default
one-time execution with the given delay.
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Create a new ScheduledExecutorTask.
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Public Methods | |||||||||||
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Return the delay before starting the job for the first time.
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Return the period between repeated task executions.
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Return the Runnable to schedule as executor task.
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Return the time unit for the delay and period values.
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Return whether to schedule as fixed-rate execution.
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Is this task only ever going to execute once?
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Set the delay before starting the task for the first time,
in milliseconds.
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Set whether to schedule as fixed-rate execution, rather than
fixed-delay execution.
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Set the period between repeated task executions, in milliseconds.
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Set the Runnable to schedule as executor task.
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Specify the time unit for the delay and period values.
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[Expand]
Inherited Methods | |||||||||||
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From class
java.lang.Object
|
Create a new ScheduledExecutorTask, to be populated via bean properties.
Create a new ScheduledExecutorTask, with default one-time execution without delay.
executorTask | the Runnable to schedule |
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Create a new ScheduledExecutorTask, with default one-time execution with the given delay.
executorTask | the Runnable to schedule |
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delay | the delay before starting the task for the first time (ms) |
Create a new ScheduledExecutorTask.
executorTask | the Runnable to schedule |
---|---|
delay | the delay before starting the task for the first time (ms) |
period | the period between repeated task executions (ms) |
fixedRate | whether to schedule as fixed-rate execution |
Return the delay before starting the job for the first time.
Return the period between repeated task executions.
Return whether to schedule as fixed-rate execution.
Is this task only ever going to execute once?
true
if this task is only ever going to execute onceSet the delay before starting the task for the first time, in milliseconds. Default is 0, immediately starting the task after successful scheduling.
Set whether to schedule as fixed-rate execution, rather than fixed-delay execution. Default is "false", that is, fixed delay.
See ScheduledExecutorService javadoc for details on those execution modes.
Set the period between repeated task executions, in milliseconds.
Default is -1, leading to one-time execution. In case of a positive value, the task will be executed repeatedly, with the given interval inbetween executions.
Note that the semantics of the period value vary between fixed-rate and fixed-delay execution.
Note: A period of 0 (for example as fixed delay) is not supported,
simply because java.util.concurrent.ScheduledExecutorService
itself
does not support it. Hence a value of 0 will be treated as one-time execution;
however, that value should never be specified explicitly in the first place!
Specify the time unit for the delay and period values.
Default is milliseconds (TimeUnit.MILLISECONDS
).