package

com.atlassian.jira.scheduler.cron

Classes

ConversionResult Represents a converted trigger to a cron string  
CronValidator This is similar to the com.atlassian.scheduler.cron.CronExpressionValidator, except that the error messages go through translation. 
SimpleToCronTriggerConverter From the extranet spec page:

There are a number of things a cronspec cannot handle cleanly when converting a arbitrary fixed millisecond repeat from a specific DateTime into a cronspec.