Package com.redwood.scheduler.api.model.interfaces

Interface PeriodFunctionCalculator

public interface PeriodFunctionCalculator

Interface to a computable temporal interval. When writing a custom period function, please note the following: The dispatcher processes all jobs using the same instance of the period function. This means that the same period function will be called with different parameters. Therefore, you have to be very careful when storing values inside the period function. Parameter values can be cached to increase performance, but you must test every time that the parameter values have not changed.

Method Summary

Modifier and Type	Method	Description
String	description(Properties parameters)	Human-readable (and understandable) description of this function
boolean	isOpen(DateTimeZone atTime, TimeZone timeZone, Properties parameters)	see TimeWindowIntervalMethod#isOpen(DateTimeZone)
DateTimeZone	nextPotentialStatusChange(DateTimeZone startTime, DateTimeZone endTime, TimeZone timeZone, Properties parameters)	see TimeWindowIntervalMethod#nextPotentialStatusChange(DateTimeZone,DateTimeZone)
void	validate(Properties parameters)	Throws runtime exception if the parameters are not valid for this period function

Method Detail

nextPotentialStatusChange

DateTimeZone nextPotentialStatusChange(DateTimeZone startTime,
                                       DateTimeZone endTime,
                                       TimeZone timeZone,
                                       Properties parameters)
                                throws SchedulerAPIException

see TimeWindowIntervalMethod#nextPotentialStatusChange(DateTimeZone,DateTimeZone)

Parameters:

parameters - parameters specific for this period function

startTime - time to look from

endTime - timestamp to look up to

timeZone - time zone to work in

Returns:

a timestamp of the next potential status change AFTER the startTime

Throws:

SchedulerAPIException

isOpen

boolean isOpen(DateTimeZone atTime,
               TimeZone timeZone,
               Properties parameters)
        throws SchedulerAPIException

see TimeWindowIntervalMethod#isOpen(DateTimeZone)

Parameters:

timeZone - time zone of the TimeWindowInterval

atTime - timestamp to check

parameters - parameters specific for this period function

Returns:

true if it is open at atTime

Throws:

SchedulerAPIException

validate

void validate(Properties parameters)

Throws runtime exception if the parameters are not valid for this period function

Parameters:

parameters - parameters specific for this period function

description

String description(Properties parameters)

Human-readable (and understandable) description of this function

Parameters:

parameters - parameters specific for this period function

Returns:

human-readable (and understandable) description of this function