[CALSCH] draft-royer-dyn-query-00.txt

   Application Working Group                 Doug Royer/INET-Consulting LLC
   Internet Draft                                         December 21, 2003
   Expires: May 2004


                  Variables in Dynamic Queries for iCalendar
                         draft-royer-dyn-query-00.txt

   Status of this Memo

   This document is an Internet-Draft and is in full conformance with all
   provisions of Section 10 of RFC2026.

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   Copyright Notice
       Copyright (C) The Internet Society (2003). All Rights Reserved.




                                   ABSTRACT

   This is a proposal to allow iCalendar dynamic query the ability to be
   passed down optional values to be used stored queries.



   1.  New parameters

   [CAP] allows for stored queries.   Using  the  existing  stored  queries
   (VQUERY) as defined in [CAP], this describes a standard way to pass down
   variables to those queries.

   1.1  DT-RANGE

   Parameter Name: DT-RANGE

   Purpose: This property specifies a period of time for  which  the  query


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   should apply.

   Value Type: PERIOD

   Format Definition: The property is defined by the following notation:

        dt-range = "DT-RANGE" "=" period


   Examples:
      QUERYID;DT-RANGE="19971015T050000Z/PT8H30M":GET-OBJECTS

      QUERYID;DT-RANGE="19980314T233000Z/19980315T003000Z":GET-OBJECTS


   1.2  MAX-OCTETS

   The  "MAX-OCTETS"  parameter is added to the "QUERYID" property value to
   signify the maximum number of octets to be returned in the query. The CS
   will trim the returned valued down so that only complete objects will be
   sent.  Each time that "MAX-OCTETS" is supplied it sets the  default  for
   that  named  "QUERYID"  for the current session only and the results set
   back will be the first (0th) set. Use the  "GET-SET"  parameter  to  get
   sets greater then zero.

   Parameter Name: MAX-OCTETS

   Purpose:  The property indicates the largest reply size allowed for this
   query by the CUA. If supplied the first reply always get the  first  set
   of components that fit within the limit. See the "GET-SET" parameter for
   information on how to get the following sets of components.

   Value Type: INTEGER

   Format Definition: The property is defined by the following notation:

        max-octets = "MAX-OCTETS" "=" integer


   Example:
      QUERYID;MAX-OCTETS=10240:GET-OBJECTS


   1.3  GET-SET

   The "GET-SET" parameter is added to the "QUERYID" property value request
   the next set of components be returned for the last query performed with
   the same name.  Supplied is the set  number  to  be  fetched.   The  set


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   numbers  start  with zero.  The original query must have suppled a "MAX-
   OCTETS" parameter and value.

   Parameter Name: GET-SET

   Purpose: Added by the CUA to inform the CS to return  the  next  set  of
   components  to  the CUA. The first set is ZERO and continues up until no
   more data is returned (See the  "SETS"  parameter).   Requesting  a  set
   larger  than  the number of sets available will return a "VREPLY" with a
   "REQUEST-STATUS" value of "3.15" invalid set number.

   Value Type: INTEGER

   Format Definition: The property is defined by the following notation:

        get-set = "GET-SET" "=" integer


   The following example gets the 15th set of components that match the
      QUERYID;GET-SET=15:GET-OBJECTS


   1.4  SETS

   The "SETS" parameter MUST BE added to the "REQUEST-STATUS" property in a
   "VREPLY"  that  is  the  result  of a "VQUERY" that had the "MAX-OCTETS"
   parameter added to the "QUERYID" property. It specifies the current  and
   maximum set numbers available.

   Parameter Name: SETS

   Purpose:  Added  by  the  CS  to  inform the CUA that of the current and
   maximum number of sets of data available.

   Value Type: INTEGER multivalued.

   Format Definition: The property is defined by the following notation:

        sets         = "SETS" "=" current-set "," max-set

        current-set  = integer

        max-set      = integer


   The following example tells the CUA  that  set  '4'  of  '20'  is  being
   returned.



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      REQUEST-STATUS;SETS=4,20:2.0;Success

   And an example of an error:

      REQUEST-STATUS;SETS=4,20:3.15;Invalid set number.



   1.5  GET-COMP

   The  "GET-COMP"  parameter  is  added to the "QUERYID" property value to
   signify the component types to be returned in the query.

   Parameter Name: GET-COMP

   Purpose: Added by the CUA to inform the CS the  component  types  to  be
   returned in the query.

   Value Type: text multivalued.

   Format Definition: The property is defined by the following notation:

        get-comp     = "GET-COMP" "=" comp-name *["," comp-name ]

        comp-name    = ; any valid component name including
                       ; x- components.

   The  following  example tells the CS only to return "VEVENT" and "VTODO"
   components.

      QUERYID;GET-COMP=VEVENT,VTODO=10240:GET-OBJECTS

   1.6  Bibliography


      [iCAL]    Dawson, F. and Stenerson, D., "Internet Calendaring and
                Scheduling Core Object Specification (iCalendar)", RFC 2445,
                November 1998 ftp://ftp.isi.edu/in-notes/rfc2445.txt

      [iTIP]    Silverberg, S., Mansour, S., Dawson, F. and Hopson, R.,
                "iCalendar Transport-Independent Interoperability Protocol
                (iTIP) Events, BusyTime, To-dos and Journal Entries",
                RFC 2446, November 1998 ftp://ftp.isi.edu/in-notes/rfc2446.txt

      [iMIP]    Dawson, F., Mansour, S. and Silverberg, "iCalendar
                Message-Based Interoperability Protocol (iMIP)", RFC 2447,
                November 1998 ftp://ftp.isi.edu/in-notes/rfc2447.txt



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      [CAP]     Royer, D., Babics, G., Hill, P. Mansour, S. "Calendar
                Access Protocol (CAP)", work in progress,
                draft-ietf-calsch-cap-12.txt




   2.  Author's Address

      Doug Royer
      http://INET-Consulting.com
      1795 W. Broadway #266
      Idaho Falls, Idaho  83402
      US

      Phone: 208-520-4044
      Fax:   866-594-8574
      EMail: [email protected]
      URI:   http://Royer.com/People/Doug































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                                Acknowledgment


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   Funding for the  RFC  Editor  function  is  currently  provided  by  the
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