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Re: locations of DST information --> debugging zoneinfo fix
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Re: locations of DST information --> debugging zoneinfo fix


  • Subject: Re: locations of DST information --> debugging zoneinfo fix
  • From: "Mr. Pierre Frisch" <email@hidden>
  • Date: Mon, 28 Jan 2008 22:48:33 -0800

Sorry for the noise.

On a typical machine there are 3 copies of the TimeZone info (and the abbreviations). In the system, in the JVM and in the JavaFoundation. The machine one is typically not used by Java applications. The Java one is used if you use the Java Format and the JavaFoundation on is used by NSTimeZone and NSTimestampFormatter as it uses NSTimeZone. There may be some "interesting" effect if the JVM and NSTimeZone are not in synch as NSTimestampFormatter uses a SimpleDateFormat internaly but set the time zone using NSTimeZone. I have not tested this case.
--
Pierre Frisch
email@hidden



On Jan 28, 2008, at 22:26, Lachlan Deck wrote:


Seeing as the thread has been hijacked by api squabbles (as interesting as that is), just thought it'll be worth changing the subject for my particular questions...


Just so it doesn't get lost amongst the noise :-)

Any ideas on the below?

Thanks.

On 29/01/2008, at 3:47 PM, Lachlan Deck wrote:

Alright, bringing this thread back to the problem at hand...

On 28/01/2008, at 6:06 PM, Lachlan Deck wrote:

On 28/01/2008, at 5:44 PM, Art Isbell wrote:

On Jan 27, 2008, at 8:10 PM, Lachlan Deck wrote:

What I meant was that I assumed that, as I'm seeing the correct behaviour on my development machine with WO5.3, that I would have thought that by embedding all system frameworks for 5.3 in the app that the behaviour would continue to be correct on deployment.

Seems like a valid assumption to me as far as the NSTimeZone is concerned *if* none of the WO 5.4 frameworks containing time zone info is being loaded (i.e., if the class paths exclude all WO 5.4 frameworks and jars). But if the JVM time zone info differs between the dev and deployment machine, then Java TimeZone calculations could differ.

Yeah, 5.4 is not in the picture at all, for the moment, whether in dev or deploy.

Okay, the OS's (freebsd) has been updated to 2007k - http://www.101tech.net/wordpress/2007/01/11/how-to-update-timezone-info-in-freebsd/

Java has also been updated:
- http://docs.info.apple.com/article.html?artnum=305129

For installed WO stuff, this has been updated:
/usr/local/Apple/Library/Frameworks/JavaFoundation.framework/ WebServerResources/Java/com/webobjects/foundation/TimeZoneInfo/ zoneinfo.zip


None of the WO5.2 installed jars have been updated -- as I assume that these should not have any effect given that my app embed all the system/local frameworks from my local dev machine which has a recent enough zoneinfo snapshot.

However, WO's NSTimestampFormatter is not picking up the changes.
--> endDate:2008-03-31 09:00:00 Etc/GMT 'java formatted':2008-03-31 20:00 'nsformatted':2008-03-31 19:00


Is there something I missed?

with regards, --

Lachlan Deck



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  • Follow-Ups:
    • Re: locations of DST information --> debugging zoneinfo fix
      • From: Lachlan Deck <email@hidden>
References: 
 >Re: locations of DST information (From: Lachlan Deck <email@hidden>)
 >Re: locations of DST information (From: Art Isbell <email@hidden>)
 >Re: locations of DST information (From: Lachlan Deck <email@hidden>)
 >Re: locations of DST information (From: Lachlan Deck <email@hidden>)
 >Re: locations of DST information (From: Lachlan Deck <email@hidden>)
 >Re: locations of DST information --> debugging zoneinfo fix (From: Lachlan Deck <email@hidden>)

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