#31 support setFirstDayOfWeek

[Simon Kitching]

Could you please consider adding support for
setFirstDayOfWeek
to the appropriate Chronology classes?

This would make things more consistent with the java.util.Calendar API.

In particular, I am currently trying to compare the behaviour of java.util.Calendar, Joda and the Apache MyFaces Tomahawk calendar (javascript) with respect to handling weekOfWeekYear, but can only compare them for firstDayOfWeek=monday because Joda does not support other days.

Yes, I know that Monday is the official ISO first-day-of-week.

Thanks.

[Stephen Colebourne]

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I suspect that adding this could be a little tricky. Its not at the top of my TODO list, especially with JSR-310 ongoing.

[Nobody/Anonymous]

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I've now implemented ymd<->ywd mapping functions in the Apache Myfaces Tomahawk project, including firstDayOfWeek support. See here:
http://svn.apache.org/repos/asf/myfaces/tomahawk/trunk/core/src/main/java/org/apache/myfaces/dateformat/
and unit tests:
http://svn.apache.org/repos/asf/myfaces/tomahawk/trunk/core/src/test/java/org/apache/myfaces/dateformat/

In particular, see method SimpleDateFormatter.getWeekDate.

Joda is welcome to borrow code from there if desired. The Tomahawk code is of course APL2.0 licensed, but I am happy to release the code I wrote (esp. getWeekDate) under other licenses if necessary.

Regards, Simon

[Stephen Colebourne]

Might be able to add something to get the day of week value differently, but the "setFirstDayOfWeek" concept doesn't fit Joda-Time's API style