Re: H2 and timezones
Re: H2 and timezones
- Subject: Re: H2 and timezones
- From: Chuck Hill <email@hidden>
- Date: Mon, 07 Mar 2011 11:24:22 -0800
On Mar 7, 2011, at 11:21 AM, Pascal Robert wrote:
> Just tried that, and when I display the date in a WOTextField with a dateformat formatter, the time show up in GMT instead of America/Montreal, even if I call this.setTimeZone(TimeZone.getTimeZone("America/Montreal")); in Session.java.
Is "this" the date formatter?
Chuck
>
> To make it short, I want to store the time in GMT, but want to show and edit it in the local timezone of the user. Me starting to think that I should use a long that store the epoch :-/
>
>> any reason you can't just run your app in GMT via the user.timezone property?
>>
>> ms
>>
>> On Mar 7, 2011, at 9:10 AM, Pascal Robert wrote:
>>
>>> It look like H2 stores the time in the system's timezone instead of GMT. For example, a NSTimestamp which time is 13:40:58 Etc/GMT is stored as 08:40:58 because my system is set to America/Montreal (GMT -5). According to H2 documentation:
>>>
>>> " If the time zone is not set, the value is parsed using the current time zone setting of the system. Date and time information is stored in H2 database files without time zone information. If the database is opened using another system time zone, the date and time will be the same. That means if you store the value '2000-01-01 12:00:00' in one time zone, then close the database and open the database again in a different time zone, you will also get '2000-01-01 12:00:00'. Please note that changing the time zone after the H2 driver is loaded is not supported. "
>>>
>>> I really need to store the dates in GMT, or at least store the timezone offset, but I didn't find how to tell H2 to store it. I was thinking it might be because the formatter that ERH2PlugIn.formatValueForAttribute() calls is not storing the timezone offset, but when debugging, I don't even reach that formatter, so the problem doesn't seem to be there.
>>>
>>> --
>>> Pascal Robert
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--
Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their overall knowledge of WebObjects or who are trying to solve specific problems.
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