[JENA-840] riot is too permissive towards yearFrag of xsd:datetime

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Invalid
• Affects Version/s: Jena 2.13.0
• Component/s: RIOT
• Assignee: Unassigned
• Reporter: Vladimir Alexiev
• Created: 31/Dec/14 12:58
• Updated: 31/Dec/14 18:40
• Resolved: 31/Dec/14 18:14

Description

I noticed that RIOT treats differently years in xsd:gYear & xsd:date vs xsd:datetime. It's more permissive towards the yearFrag in xsd:datetime:

• allows leading +
• allows leading zeros even for >4 digits

So I checked the spec namely D.2.1 The Seven-property Model and D.2.2 Lexical Mappings.

• the year component (yearFrag) is treated the same in all date & time datatypes
• it allows any number of digits, leading -, no leading +, and leading zeros only up to 4 total digits:

  [56]   yearFrag ::= '-'? (([1-9] digit digit digit+)) | ('0' digit digit digit))
  

After playing with "riot --validate", I think it gets it right for gYear, gYearMonth and date, but gets it wrong for datetime.

RIOT: VERSION: 2.12.2-SNAPSHOT
RIOT: BUILD_DATE: 2014-12-30T23:53:13+0000