[jbpm-issues] [JBoss JIRA] Commented: (JBPM-1098) businesscalendar is unaware of leapyears

[ http://jira.jboss.com/jira/browse/JBPM-1098?page=comments#action_12399275 ] Alejandro Guizar commented on JBPM-1098: ---------------------------------------- Ronald, some of our customers have expressed concerns about this issue, so I want to clarify the real nature of this problem. Please review the following description and tell me if I'm missing something. Durations in jBPM, as implemented by org.jbpm.calendar.Duration, are always treated as milliseconds regardless of the unit of time that occurs in the process definition. Quoting the aforementioned class, we have: SECOND = 1000; MINUTE = 60*SECOND; HOUR = 60*MINUTE; DAY = 24*HOUR; WEEK = 7*DAY; MONTH = 30*DAY; YEAR = 365*DAY; The problem is, not all months and years have the same length. Leap years are 366 days. Months have between 28 and 31 days. Therefore, to accurately add months or years to a time instant, the original unit of time must be preserved in order to determine how many days to add, in relation to the month or year of the time instant. Nevertheless, durations consisting of seconds, minutes, hours, days or weeks are NOT affected, because these units always have the same length. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.jboss.com/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira