Re: WebObjects 4.5 and Daylight Savings Time change.

Mon, 06 Nov 2006 18:32:47 -0800

According to Apple docs from the time (which I had at the office but not with me now), it looked like foundation back then had its own algorithms for calculating time independent of the os, similar to the way java does it.

In our apps we have some of each... some uses of java GregorianCalendar and related classes, and other uses of NSGregorianDate and its brethren. The java situation is problematic because we must use the 1.1.8 jvm which is not being patched by Sun, but at least there we see a solution. In the case of the NS classes I haven't yet seen how it is being done.

Thanks.
Jim

On Nov 6, 2006, at 9:03 PM, Art Isbell wrote:

On Nov 6, 2006, at 3:37 PM, James Stead wrote:

I have a client with a substantial number of WO 4.5 apps still in production and we are looking into the upcoming change in the start and end dates of Daylight Savings Time in 2007. Is anyone else still on 4.5? And if so have you given any thought to this issue?

The Objective-C Foundation's date classes use the OS time zone info for such things as Daylight Saving Time.  The Java Foundation's date classes probably use the Java VM time zone info for such things.  So I would think that no matter which language your WO 4.5 apps are written in, if your OS and Java installations are current, 2007 Daylight Saving Time start and end dates should be correct.

Aloha,
Art

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