Date fields sometimes not preserved when using DataHelper.
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Key: TUSCANY-582
URL: http://issues.apache.org/jira/browse/TUSCANY-582
Project: Tuscany
Issue Type: Bug
Components: Java SDO Implementation
Reporter: Brian Murray
Priority: Minor
While I find it mildly surprising that you can convert from a Day to a Date, I
would expect that in doing so the Day (Date.getDate()) value within Date would
be accurate (even if all other fields are meaningless).
// The output of each println (from a single run) is placed in comments beside
it
public void testShowErrorsInSimpleFashion() throws Exception
{
Date temp = new Date(System.currentTimeMillis());
// In following sequence - would expect the Day value (here, 21) to be
maintained.
System.out.println("temp = " + temp); // temp = Fri Jul 21 03:51:01 EDT
2006
String day = data_helper.toDay(temp);
System.out.println("day = " + day); // day = ---21 EDT
Date date2 = data_helper.toDate(day);
System.out.println("date2 = " + date2); // date2 = Thu Feb 29 23:00:00
EST 1968
String day2 = data_helper.toDay(date2);
System.out.println("day2 = " + day2); // day2 = ---29 EST
}
When I look in DataHelperImpl.java, I see a series of Date Patterns. It
seems that Day is being matched to an earlier pattern than the expected one
(the expected one is "---dd zz"). When I move that pattern to first in the
list, the outcome is affected. Were it not matching an earlier pattern, I
would think that moving the correct one to the front of the list would not
have an effect.
Leaving DataHelperImpl.java unaltered, Day = 21 EDT, and Day2 = 29 EST (in
the case above). However, if I put the appropriate pattern first in the list,
Day2 is instead = 20 EST. Interestingly, it is still not the correct day (21).
Frank pointed out that there have been recent updates to DataHelper, however
I've retested with build level 425652 and see the same behavior.
Side note:
The following is not a JIRA issue, but it is related. In the second table
on page 146 the Date conversions for most types are essentially to the same
type, to Date, and to String. It seems that several more are possible. The
following seem capable of being added:
DateTime-> Month, MonthDay, YearMonth, YearMonthDay, Time, Year,
Duration, Day
Duration->Month, MonthDay, YearMonth, YearMonthDay, Time, Year, DateTime,
Day
MonthDay->Month, Day
YearMonth->Month, Year
YearMonthDay->Month, Year, Day, YearMonth, MonthDay
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