[VCARDDAV] New Date Range Proposal

[Renato Iannella <[e-mail]>]

I am proposing to add a new EFFECTIVE-DATES Property Parameter to vCard to support the need to indicate that some vCard Properties were effective over a certain fixed time period. (Otherwise, all properties are considered to be current).

STEP 1 - Add new DATE-RANGE Property Value Data Type
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4.3.6.  DATE-RANGE

 A complete representations of time intervals identified by start and end as specified in [ISO.8601.2004] section 4.4.4.

 Representations (for Date and Time) with reduced accuracy are allowed.

 Examples for "date-range":

    2000-01-25T12:30:00/2005-02-25T12:30:00
    2000-01-25/2005-02-25
    2000-01/2005-02
    2000/2005


STEP 2 - Add new EFFECTIVE-DATES Property Parameters
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5.14.  EFFECTIVE-DATES

   The EFFECTIVE-DATES parameter is optional, and is used to indicate that the
   corresponding instance of a property was effective (or valid) over the specified
   time period.

   When the parameter is absent, the default MUST be to interpret the
   property instance as being current.

   This parameter MAY be applied to any property that allows multiple
   instances.

   ABNF:

           effective-dates-param = "EFFECTIVE-DATES=" date-range
                               

STEP 3 - Add EFFECTIVE-DATES Property Parameters to the following Properties:
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- All Delivery Addressing Properties
- All Communications Properties
- All Geographical Properties
- All Organizational Properties
- All Explanatory Properties




Cheers

Renato Iannella
http://renato.iannella.it