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From Justin Mclean <jus...@classsoftware.com>
Subject DateField Issues and fixes
Date Fri, 19 Apr 2013 03:42:40 GMT

I've been looking at DataField and it has a few problems mostly how it dealing with format
string parsing in stringToDate and dateToString static methods. 

There are several unresolved JIRA issues around this component.

Some of the issues include.

1. Poor support of "M" and "D" vs "MM" and "DD". Currently:
1/10/2013 formatted with D/M/YY = null
1/10/2013 formatted with D/MM/YY = null
1/10/2013 formatted with M/D/YY = null
7/17/69 formatted with M/D/YY = null
1/30/13 formatted with M/D/YY = null

And also this - which is just plain wrong! It should either reject the format as being invalid
or be able to deal with it.

Tue Oct 1 00:00:00 GMT+1000 2013 formatted with D/M/YY = 1/1013
Thu Jul 17 00:00:00 GMT+1000 1969 formatted with M/D/YY = 7/1769
Thu Jul 17 00:00:00 GMT+1000 1969 formatted with D/M/YY = 177/69
Tue Oct 1 00:00:00 GMT+1000 2013 formatted with M/D = 1001

2. Invalid formatting of invalid dates
Invalid Date formatted with DD/MM/YYYY = NaN/NaN/NaN 

3. Magic cut off in 1970.
7/17/71 formatted with MM/DD/YYYY = Sat Jul 17 00:00:00 GMT+1000 1971
7/17/69 formatted with MM/DD/YYYY = Wed Jul 17 00:00:00 GMT+1100 2069

I've  rewritten the methods in a cleaner way that support a wider range of formats and fixes
all the issue above.

The code is in the style of the existing SDK code (which is a little ugly IMO). Any feedback,potential
bug etc etc would be appreciated.

There a bit more work to do with stringToDate and support for formats without separators -
which might be tricky.

The mustella DateField tests all pass however I believe it only tests the US centric MM/DD/YYYY

     [java] =====================================================
     [java]     Passes: 327
     [java]     Fails: 0
     [java] =====================================================


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