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https://issues.apache.org/jira/browse/DERBY-3320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12577235#action_12577235
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Daniel John Debrunner commented on DERBY-3320:
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Sorry missed earlier comment about exact match on locale.

> Database creation and boot should fail if collation=TERRITORY_BASED and the 
> selected locale is not supported
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3320
>                 URL: https://issues.apache.org/jira/browse/DERBY-3320
>             Project: Derby
>          Issue Type: Bug
>    Affects Versions: 10.4.0.0
>         Environment: Java ME:
> Product: phoneME Advanced (phoneme_advanced_mr2-b34)
> Profile: Foundation Profile Specification 1.1
> Linux 2.4.21-40.ELsmp #1 SMP Thu Feb 2 22:14:12 EST 2006 i686 athlon i386 
> GNU/Linux
>            Reporter: Vemund Østgaard
>            Assignee: Mamta A. Satoor
>         Attachments: DERBY_3320_Repro.java
>
>
> A problem I've discovered when testing with the phoneME advanced platform is 
> that the collationtests expect other locales than Locale.US to be available 
> on the platform that is used for the test, and for phoneME advanced (when 
> compiled as foundation profile) only Locale.US is available. From the jdk1.6 
> javadoc of Collator.getAvailableLocales() I see that only Locale.US is 
> strictly required:
> public static Locale[] getAvailableLocales()
>     Returns an array of all locales for which the getInstance methods of this 
> class can return localized instances. The returned array represents the union 
> of locales supported by the Java runtime and by installed CollatorProvider 
> implementations. It must contain at least a Locale instance equal to 
> Locale.US.
>     Returns:
>         An array of locales for which localized Collator instances are 
> available.
> This led me to thinking about how Derby should behave if created/booted with 
> collation=TERRITORY_BASED and territory=<some unsupported locale>. I'm not 
> sure what the consequences could be if the database is first created on a 
> platform that supports whatever locale is set and later booted with one that 
> doesn't, or created on a platform missing support and later booted with one 
> that has. In any case I think it may confuse a user needlessly to see the 
> database boot successfully with his collation setting and later behave in a 
> way he does not expect.
> Opinions voiced on the derby-dev list are that both database creation and 
> boot should fail if collation=TERRITORY_BASED and the selected locale is not 
> supported.
> If a change like this is implemented, the collationtests should be changed to 
> verify correct behavior also if they are executed in an environment were some 
> of the tested locales are not supported.

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