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[Dana Florescu <924754@xxxxxxxxxxxxxxxxxx>]

** Changed in: zorba
     Assignee: Sorin Marian Nasoi (sorin.marian.nasoi) => Cezar Andrei (cezar-andrei)

** Changed in: zorba
   Importance: Undecided => Low

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https://bugs.launchpad.net/bugs/924754

Title:
  support for the xs:dateTimeStamp type

Status in Zorba - The XQuery Processor:
  New

Bug description:
  I bumped into the following issue while trying to run the following XQuery 3.0 test:
  exists(fn:timezone-from-dateTime(xs:dateTimeStamp("2011-07-28T12:34:56-08:00")))

  Zorba returned:
  static error [err:XPST0017]: "xs:dateTimeStamp": function with arity 1 not declared

  Looking into the latest F&O Spec for XQuery 3.0 I see that a new type,
  xs:dateTimeStamp was added for the implementations that "support XSD
  1.1".

  I have a few questions:
  1) should Zorba support the new type, xs:dateTimeStamp?
  If so, some function signatures need to be changed, for instance:
  Now, in Zorba, 
  fn:current-dateTime() returns a xs:dateTime
  instead of a xs:dateTimeStamp as stated in the http://www.w3.org/TR/xpath-functions-30/#func-current-dateTime.

  2) Should Zorba support constructor functions for xsd types ? Meaning should we add functions like:
  fn:unsignedInt($arg as xs:anyAtomicType?) as xs:unsignedInt?

  3) There are 2 tests in Zorba( xquery_1_0 and xquery_1_1) that check if all the functions from the fn: namespace of the F&O spec 1.0 and 3.0 are implemented in Zorba.
  The problem with these tests is that they only check the function names and their corresponding arities; they do not check if the types of the parameters are correct.
  This is the reason why the change in the signature of the fn:current-dateTime() that should now return a xs:dateTimeStamp was not picked up by these tests.

  IMO we should update these 2 tests to also check the parameter types:
  one problem I see here is that the introspection module only provides
  function to get the function name and arity, not the types of the
  parameters.

  Thanks for the help,
  Sorin

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