[SLING-9983] Add support for predefined date format styles

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Scripting HTL Engine 1.4.6-1.4.0
• Fix Version/s: Scripting HTL Engine 1.4.8-1.4.0, Scripting HTL Testing Content 1.0.28-1.4.0, Scripting HTL Testing 1.0.30-1.4.0
• Component/s: Scripting
• Assignee: Radu Cotescu
• Reporter: Konrad Windszus
• Created: 08/Dec/20 11:03
• Updated: 23/Jul/21 07:38
• Resolved: 02/Mar/21 16:52

Description

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 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

Issue Links

• is blocked by: SLING-9999 Remove cyclic dependency between scripting and servlets features
• relates to: SLING-6140 Adding number formatting to Sightly/HTL
• relates to: SLING-6102 Adding formatter to HTL/Sightly dates
• relates to: SLING-6399 Implement support for date and number formatting for HTL
• links to: GH IT PR
• links to: GH PR
• links to: GH Test content PR