From Masayoshi.Okutsu at Sun.COM  Fri Feb  1 05:11:30 2008
From: Masayoshi.Okutsu at Sun.COM (Masayoshi Okutsu)
Date: Fri, 01 Feb 2008 22:11:30 +0900
Subject: <i18n dev> Using system tzdata
In-Reply-To: <479FEC31.5030404@sun.com>
References: <200708090008.l7908GHP025455@ribbit.SFBay.Sun.COM>
	<46C32F4E.1050006@redhat.com> <46C3AE39.3010200@sun.com>
	<46E5A4C5.9080904@redhat.com> <46F16A51.80705@redhat.com>
	<476B2C0B.2060507@sun.com> <478E2034.4010502@sun.com>
	<loom.20080125T154422-775@post.gmane.org> <479DDCF1.6080609@sun.com>
	<479F8DE0.70907@kaffe.org> <479FBC03.5090603@sun.com>
	<479FC2B3.2070106@sun.com> <479FEC31.5030404@sun.com>
Message-ID: <47A31A82.8080303@sun.com>

A problem is that the OS tzdata doesn't contain enough information for 
supporting the java.util.Calendar API. Otherwise, it would be 
unnecessary to provide JDK's own tzdata files.

Masayoshi

Martin Buchholz wrote:
> I don't know anything about how the Olson database is implemented
> or accessed on any particular OS..... I'm just brainstorming here.
>
> Say someone creates their own timezone definition MYTZ and adds it
> to the OS database.  If Java fails to lookup any such timezone,
> it seems reasonable to consult the OS.
> Similarly if the OS has a more up-to-date database with a newly
> defined timezone.  (But that's rare)
>
> If the JDK and the OS agree on the current timezone definition,
> all is wonderful.  If they differ, perhaps it is worth figuring
> out which is newer, even if that is difficult.  Perhaps it's worth
> snooping around in /usr/share/lib/zoneinfo.
>
> Martin
>
> Masayoshi Okutsu wrote:
>   
>> Tzdata for Java does have the Olson version information (eg,
>> tzdata2007k), but I don't think the OS tzdata has it. But I don't know
>> what Java should do if it was possible to check OS tzdata version. Can
>> you elaborate your suggestion a bit more?
>>
>> Thanks,
>> Masayoshi
>>
>> On 1/30/2008 8:51 AM, Martin Buchholz wrote:
>>     
>>> Dalibor Topic wrote:
>>>  
>>>       
>>>> Masayoshi Okutsu wrote:
>>>> From the POV of operating system distributors that already need to
>>>> support tzdata for other applications, and therefore need to keep it
>>>> current anyway for their customers, I think it's preferable to rely on
>>>> system facilities where such facilities exist, than to have to push a
>>>> separate patch for the Java runtime.
>>>>     
>>>>         
>>> Perhaps the best behavior is to check whether the system database is
>>> at least as up to date as the Java database.  Could Java know
>>> about the "last" change to its own database, query the OS as to whether
>>> it "knows about" this specific change, and if so, defer to it?
>>>
>>> Martin
>>>
>>>  
>>>       
>>>> cheers,
>>>> dalibor topic
>>>>     
>>>>         


From mr at sun.com  Fri Feb 29 22:13:21 2008
From: mr at sun.com (mr at sun.com)
Date: Sat, 01 Mar 2008 06:13:21 +0000
Subject: <i18n dev> hg: jdk7/i18n: 2 new changesets
Message-ID: <20080301061321.9D28726F37@hg.openjdk.java.net>

Changeset: 0a5c5386a678
Author:    xdono
Date:      2007-12-04 16:28 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/rev/0a5c5386a678

Added tag jdk7-b24 for changeset cfeea66a3fa8

+ .hgtags

Changeset: c57bef8dda9c
Author:    mr
Date:      2008-02-29 20:03 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/rev/c57bef8dda9c

6669216: Add jcheck configuration directories
Reviewed-by: ohair, xdono

+ .jcheck/conf



From mr at sun.com  Fri Feb 29 22:13:30 2008
From: mr at sun.com (mr at sun.com)
Date: Sat, 01 Mar 2008 06:13:30 +0000
Subject: <i18n dev> hg: jdk7/i18n/corba: 2 new changesets
Message-ID: <20080301061332.D712826F3E@hg.openjdk.java.net>

Changeset: 474c23b174e9
Author:    xdono
Date:      2007-12-04 16:28 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/corba/rev/474c23b174e9

Added tag jdk7-b24 for changeset 55540e827aef

+ .hgtags

Changeset: fec639c69db2
Author:    mr
Date:      2008-02-29 20:03 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/corba/rev/fec639c69db2

6669216: Add jcheck configuration directories
Reviewed-by: ohair, xdono

+ .jcheck/conf



From mr at sun.com  Fri Feb 29 22:13:54 2008
From: mr at sun.com (mr at sun.com)
Date: Sat, 01 Mar 2008 06:13:54 +0000
Subject: <i18n dev> hg: jdk7/i18n/hotspot: 2 new changesets
Message-ID: <20080301061401.2F47626F45@hg.openjdk.java.net>

Changeset: 92489cdc94d1
Author:    xdono
Date:      2007-12-04 16:28 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/hotspot/rev/92489cdc94d1

Added tag jdk7-b24 for changeset a61af66fc99e

+ .hgtags

Changeset: 7836be3e92d0
Author:    mr
Date:      2008-02-29 20:03 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/hotspot/rev/7836be3e92d0

6669216: Add jcheck configuration directories
Reviewed-by: ohair, xdono

+ .jcheck/conf



From mr at sun.com  Fri Feb 29 22:14:45 2008
From: mr at sun.com (mr at sun.com)
Date: Sat, 01 Mar 2008 06:14:45 +0000
Subject: <i18n dev> hg: jdk7/i18n/jaxp: 2 new changesets
Message-ID: <20080301061449.7E06D26F4C@hg.openjdk.java.net>

Changeset: 9e3c1ad7cdb9
Author:    xdono
Date:      2007-12-04 16:28 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/jaxp/rev/9e3c1ad7cdb9

Added tag jdk7-b24 for changeset 6ce5f4757bde

+ .hgtags

Changeset: 49a4bc7b0aa0
Author:    mr
Date:      2008-02-29 20:03 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/jaxp/rev/49a4bc7b0aa0

6669216: Add jcheck configuration directories
Reviewed-by: ohair, xdono

+ .jcheck/conf



From mr at sun.com  Fri Feb 29 22:15:00 2008
From: mr at sun.com (mr at sun.com)
Date: Sat, 01 Mar 2008 06:15:00 +0000
Subject: <i18n dev> hg: jdk7/i18n/jaxws: 2 new changesets
Message-ID: <20080301061504.50F9026F53@hg.openjdk.java.net>

Changeset: 7d53d3bd7879
Author:    xdono
Date:      2007-12-04 16:28 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/jaxws/rev/7d53d3bd7879

Added tag jdk7-b24 for changeset 0961a4a21176

+ .hgtags

Changeset: 018781e80410
Author:    mr
Date:      2008-02-29 20:03 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/jaxws/rev/018781e80410

6669216: Add jcheck configuration directories
Reviewed-by: ohair, xdono

+ .jcheck/conf



From mr at sun.com  Fri Feb 29 22:15:16 2008
From: mr at sun.com (mr at sun.com)
Date: Sat, 01 Mar 2008 06:15:16 +0000
Subject: <i18n dev> hg: jdk7/i18n/jdk: 2 new changesets
Message-ID: <20080301061551.D6AB326F5A@hg.openjdk.java.net>

Changeset: 99a06bc7fdb5
Author:    xdono
Date:      2007-12-04 16:28 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/jdk/rev/99a06bc7fdb5

Added tag jdk7-b24 for changeset 37a05a11f281

+ .hgtags

Changeset: 8266cb7549d3
Author:    mr
Date:      2008-02-29 20:04 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/jdk/rev/8266cb7549d3

6669216: Add jcheck configuration directories
Reviewed-by: ohair, xdono

+ .jcheck/conf



From mr at sun.com  Fri Feb 29 22:17:39 2008
From: mr at sun.com (mr at sun.com)
Date: Sat, 01 Mar 2008 06:17:39 +0000
Subject: <i18n dev> hg: jdk7/i18n/langtools: 2 new changesets
Message-ID: <20080301061743.60FCC26F61@hg.openjdk.java.net>

Changeset: e4dae1993f8b
Author:    xdono
Date:      2007-12-04 16:28 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/langtools/rev/e4dae1993f8b

Added tag jdk7-b24 for changeset 9a66ca7c79fa

+ .hgtags

Changeset: e5e9fa6fa29c
Author:    mr
Date:      2008-02-29 20:04 -0800
URL:       http://hg.openjdk.java.net/jdk7/i18n/langtools/rev/e5e9fa6fa29c

6669216: Add jcheck configuration directories
Reviewed-by: ohair, xdono

+ .jcheck/conf