[jira] [Commented] (SLING-9983) Add support for predefined date format styles

["Julian Sedding (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SLING-9983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17246354#comment-17246354 ] 

Julian Sedding commented on SLING-9983:
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[~kwin] What do you think about using and referencing the more modern [{{DateTimeFormatter#ofLocalizedDate(FormatStyle)}}|https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html#ofLocalizedDate-java.time.format.FormatStyle-] API?

> Add support for predefined date format styles
> ---------------------------------------------
>
>                 Key: SLING-9983
>                 URL: https://issues.apache.org/jira/browse/SLING-9983
>             Project: Sling
>          Issue Type: Improvement
>          Components: Scripting
>    Affects Versions: Scripting HTL Engine 1.4.6-1.4.0
>            Reporter: Konrad Windszus
>            Assignee: Radu Cotescu
>            Priority: Major
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> SLING-6399 introduced possibilities to format dates as mandated by the spec: https://github.com/adobe/htl-spec/blob/1.3/SPECIFICATION.md#122-format.
> The problem is that date patterns patterns in general (even if a locale is passed) differ a lot between countries and languages. For that reason Java defines some [standard formats |https://docs.oracle.com/javase/tutorial/i18n/format/dateFormat.html] which work for all languages/countries. The special strings "DEFAULT", "SHORT", "MEDIUM", "LONG", and "FULL" should be accepted as values which should lead to using https://docs.oracle.com/javase/8/docs/api/java/text/DateFormat.html#getDateInstance-int-java.util.Locale- as formatter. They are also defined by Unicode CLDR: http://cldr.unicode.org/translation/date-time-1/date-time-patterns#TOC-Basic-Date-Formats



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