org.springframework.statemachine.support

Class CountTrigger

java.lang.Object

org.springframework.statemachine.support.CountTrigger

All Implemented Interfaces:

org.springframework.scheduling.Trigger

public class CountTrigger
extends java.lang.Object
implements org.springframework.scheduling.Trigger

Enhanced implementation following same logic from PeriodicTrigger except also adding a counter how many times a trigger can fire. If given count is either zero on a negative value, counter functionality is disabled.

Author:

Janne Valkealahti

See Also:

PeriodicTrigger

Constructor Summary

Constructors

Constructor and Description
CountTrigger(int count, long period, long initialDelay, java.util.concurrent.TimeUnit timeUnit) Create a trigger with the given count, period and time unit.
CountTrigger(int count, long period, java.util.concurrent.TimeUnit timeUnit) Create a trigger with the given count, period and time unit.
CountTrigger(long period) Create a trigger with the given period in milliseconds and firing exactly one time.

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
int	hashCode()
java.util.Date	nextExecutionTime(org.springframework.scheduling.TriggerContext triggerContext)
void	setFixedRate(boolean fixedRate) Specify whether the periodic interval should be measured between the scheduled start times rather than between actual completion times.
void	setInitialDelay(long initialDelay) Specify the delay for the initial execution.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CountTrigger

public CountTrigger(long period)

Create a trigger with the given period in milliseconds and firing exactly one time.

Parameters:

period - the period

CountTrigger

public CountTrigger(int count,
                    long period,
                    java.util.concurrent.TimeUnit timeUnit)

Create a trigger with the given count, period and time unit. The time unit will apply not only to the period but also to any 'initialDelay' value, if configured on this Trigger later via setInitialDelay(long).

Parameters:

count - the count

period - the period

timeUnit - the time unit

CountTrigger

public CountTrigger(int count,
                    long period,
                    long initialDelay,
                    java.util.concurrent.TimeUnit timeUnit)

Create a trigger with the given count, period and time unit. The time unit will apply not only to the period but also to any 'initialDelay' value, if configured on this Trigger later via setInitialDelay(long).

Parameters:

count - the count

period - the period

timeUnit - the time unit

initialDelay - the initial delay

Method Detail

setInitialDelay

public void setInitialDelay(long initialDelay)

Specify the delay for the initial execution. It will be evaluated in terms of this trigger's TimeUnit. If no time unit was explicitly provided upon instantiation, the default is milliseconds.

Parameters:

initialDelay - the new initial delay

setFixedRate

public void setFixedRate(boolean fixedRate)

Specify whether the periodic interval should be measured between the scheduled start times rather than between actual completion times. The latter, "fixed delay" behavior, is the default.

Parameters:

fixedRate - the new fixed rate

nextExecutionTime

public java.util.Date nextExecutionTime(org.springframework.scheduling.TriggerContext triggerContext)

Specified by:

nextExecutionTime in interface org.springframework.scheduling.Trigger

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object