org.springframework.scheduling.concurrent.ConcurrentTaskExecutor
org.springframework.scheduling.concurrent.ConcurrentTaskScheduler
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java.lang.Object
public class ConcurrentTaskScheduler
Adapter that takes a JDK 1.5 java.util.concurrent.ScheduledExecutorService
and exposes a Spring TaskScheduler for it.
Extends ConcurrentTaskExecutor in order to implement the
SchedulingTaskExecutor interface as well.
Note that there is a pre-built ThreadPoolTaskScheduler that allows for
defining a JDK 1.5 ScheduledThreadPoolExecutor in bean style,
exposing it as a Spring TaskScheduler directly.
This is a convenient alternative to a raw ScheduledThreadPoolExecutor definition with
a separate definition of the present adapter class.
ScheduledExecutorService,
ScheduledThreadPoolExecutor,
Executors,
ThreadPoolTaskScheduler| Field Summary |
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| Fields inherited from interface org.springframework.core.task.AsyncTaskExecutor |
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TIMEOUT_IMMEDIATE, TIMEOUT_INDEFINITE |
| Constructor Summary | |
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ConcurrentTaskScheduler()
Create a new ConcurrentTaskScheduler, using a single thread executor as default. |
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ConcurrentTaskScheduler(Executor concurrentExecutor,
ScheduledExecutorService scheduledExecutor)
Create a new ConcurrentTaskScheduler, using the given JDK 1.5 executors as delegates. |
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ConcurrentTaskScheduler(ScheduledExecutorService scheduledExecutor)
Create a new ConcurrentTaskScheduler, using the given JDK 1.5 executor as shared delegate. |
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| Method Summary | |
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ScheduledFuture |
schedule(Runnable task,
Date startTime)
Schedule the given Runnable, invoking it at the specified execution time. |
ScheduledFuture |
schedule(Runnable task,
Trigger trigger)
Schedule the given Runnable, invoking it whenever the trigger
indicates a next execution time. |
ScheduledFuture |
scheduleAtFixedRate(Runnable task,
Date startTime,
long period)
Schedule the given Runnable, invoking it at the specified execution time
and subsequently with the given period. |
ScheduledFuture |
scheduleAtFixedRate(Runnable task,
long period)
Schedule the given Runnable, starting as soon as possible and
invoking it with the given period. |
ScheduledFuture |
scheduleWithFixedDelay(Runnable task,
Date startTime,
long delay)
Schedule the given Runnable, invoking it at the specified execution time
and subsequently with the given delay between the completion of one execution
and the start of the next. |
ScheduledFuture |
scheduleWithFixedDelay(Runnable task,
long delay)
Schedule the given Runnable, starting as soon as possible and
invoking it with the given delay between the completion of one execution
and the start of the next. |
void |
setErrorHandler(ErrorHandler errorHandler)
Provide an ErrorHandler strategy. |
void |
setScheduledExecutor(ScheduledExecutorService scheduledExecutor)
Specify the JDK 1.5 scheduled executor to delegate to. |
| Methods inherited from class org.springframework.scheduling.concurrent.ConcurrentTaskExecutor |
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execute, execute, getConcurrentExecutor, prefersShortLivedTasks, setConcurrentExecutor, submit, submit |
| Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
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public ConcurrentTaskScheduler()
Executors.newSingleThreadScheduledExecutor()public ConcurrentTaskScheduler(ScheduledExecutorService scheduledExecutor)
scheduledExecutor - the JDK 1.5 scheduled executor to delegate to
for SchedulingTaskExecutor as well
as TaskScheduler invocations
public ConcurrentTaskScheduler(Executor concurrentExecutor,
ScheduledExecutorService scheduledExecutor)
concurrentExecutor - the JDK 1.5 concurrent executor to delegate to
for SchedulingTaskExecutor invocationsscheduledExecutor - the JDK 1.5 scheduled executor to delegate to
for TaskScheduler invocations| Method Detail |
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public final void setScheduledExecutor(ScheduledExecutorService scheduledExecutor)
Note: This will only apply to TaskScheduler invocations.
If you want the given executor to apply to
SchedulingTaskExecutor invocations
as well, pass the same executor reference to ConcurrentTaskExecutor.setConcurrentExecutor(java.util.concurrent.Executor).
ConcurrentTaskExecutor.setConcurrentExecutor(java.util.concurrent.Executor)public void setErrorHandler(ErrorHandler errorHandler)
ErrorHandler strategy.
public ScheduledFuture schedule(Runnable task,
Trigger trigger)
TaskSchedulerRunnable, invoking it whenever the trigger
indicates a next execution time.
Execution will end once the scheduler shuts down or the returned
ScheduledFuture gets cancelled.
schedule in interface TaskSchedulertask - the Runnable to execute whenever the trigger firestrigger - an implementation of the Trigger interface,
e.g. a CronTrigger object
wrapping a cron expression
ScheduledFuture representing pending completion of the task,
or null if the given Trigger object never fires (i.e. returns
null from Trigger.nextExecutionTime(org.springframework.scheduling.TriggerContext))CronTrigger
public ScheduledFuture schedule(Runnable task,
Date startTime)
TaskSchedulerRunnable, invoking it at the specified execution time.
Execution will end once the scheduler shuts down or the returned
ScheduledFuture gets cancelled.
schedule in interface TaskSchedulertask - the Runnable to execute whenever the trigger firesstartTime - the desired execution time for the task
(if this is in the past, the task will be executed immediately, i.e. as soon as possible)
ScheduledFuture representing pending completion of the task
public ScheduledFuture scheduleAtFixedRate(Runnable task,
Date startTime,
long period)
TaskSchedulerRunnable, invoking it at the specified execution time
and subsequently with the given period.
Execution will end once the scheduler shuts down or the returned
ScheduledFuture gets cancelled.
scheduleAtFixedRate in interface TaskSchedulertask - the Runnable to execute whenever the trigger firesstartTime - the desired first execution time for the task
(if this is in the past, the task will be executed immediately, i.e. as soon as possible)period - the interval between successive executions of the task (in milliseconds)
ScheduledFuture representing pending completion of the task
public ScheduledFuture scheduleAtFixedRate(Runnable task,
long period)
TaskSchedulerRunnable, starting as soon as possible and
invoking it with the given period.
Execution will end once the scheduler shuts down or the returned
ScheduledFuture gets cancelled.
scheduleAtFixedRate in interface TaskSchedulertask - the Runnable to execute whenever the trigger firesperiod - the interval between successive executions of the task (in milliseconds)
ScheduledFuture representing pending completion of the task
public ScheduledFuture scheduleWithFixedDelay(Runnable task,
Date startTime,
long delay)
TaskSchedulerRunnable, invoking it at the specified execution time
and subsequently with the given delay between the completion of one execution
and the start of the next.
Execution will end once the scheduler shuts down or the returned
ScheduledFuture gets cancelled.
scheduleWithFixedDelay in interface TaskSchedulertask - the Runnable to execute whenever the trigger firesstartTime - the desired first execution time for the task
(if this is in the past, the task will be executed immediately, i.e. as soon as possible)delay - the delay between the completion of one execution and the start
of the next (in milliseconds)
ScheduledFuture representing pending completion of the task
public ScheduledFuture scheduleWithFixedDelay(Runnable task,
long delay)
TaskSchedulerRunnable, starting as soon as possible and
invoking it with the given delay between the completion of one execution
and the start of the next.
Execution will end once the scheduler shuts down or the returned
ScheduledFuture gets cancelled.
scheduleWithFixedDelay in interface TaskSchedulertask - the Runnable to execute whenever the trigger firesdelay - the interval between successive executions of the task (in milliseconds)
ScheduledFuture representing pending completion of the task
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