org.springframework.scheduling.annotation
Annotation Type Scheduled


@Target(value={METHOD,ANNOTATION_TYPE})
@Retention(value=RUNTIME)
@Documented
public @interface Scheduled

Annotation that marks a method to be scheduled. Exactly one of the cron, fixedDelay, or fixedRate attributes must be provided.

The annotated method must expect no arguments and have a void return type.

Processing of @Scheduled annotations is performed by registering a ScheduledAnnotationBeanPostProcessor. This can be done manually or, more conveniently, through the <task:annotation-driven/> element or @EnableScheduling annotation.

Since:
3.0
Author:
Mark Fisher, Dave Syer
See Also:
EnableScheduling, ScheduledAnnotationBeanPostProcessor

Optional Element Summary
 java.lang.String cron
          A cron-like expression, extending the usual UN*X definition to include triggers on the second as well as minute, hour, day of month, month and day of week.
 long fixedDelay
          Execute the annotated method with a fixed period between the end of the last invocation and the start of the next.
 long fixedRate
          Execute the annotated method with a fixed period between invocations.
 

cron

public abstract java.lang.String cron
A cron-like expression, extending the usual UN*X definition to include triggers on the second as well as minute, hour, day of month, month and day of week. e.g. "0 * * * * MON-FRI" means once per minute on weekdays (at the top of the minute - the 0th second).

Returns:
an expression that can be parsed to a cron schedule
Default:
""

fixedDelay

public abstract long fixedDelay
Execute the annotated method with a fixed period between the end of the last invocation and the start of the next.

Returns:
the delay in milliseconds
Default:
-1L

fixedRate

public abstract long fixedRate
Execute the annotated method with a fixed period between invocations.

Returns:
the period in milliseconds
Default:
-1L