The Atom "deleted-entry" Element
RFC 6721

 
Document Type RFC - Proposed Standard (September 2012; No errata)
Was draft-snell-atompub-tombstones (individual in app area)
Last updated 2013-02-12
Stream IETF
Formats plain text pdf html
Stream WG state (None)
Consensus Unknown
Document shepherd No shepherd assigned
IESG IESG state RFC 6721 (Proposed Standard)
Telechat date
Responsible AD Barry Leiba
IESG note This document switched from Informational to Standards Track,
because of Robert's DISCUSS suggestion. But that happened
across the transition to new IESG members, so the document
needs two more positions. ADs with no positions, please add
your ballot, and I'll put this back on the telechat for 24 May.
Send notices to jasnell@us.ibm.com, draft-snell-atompub-tombstones@ietf.org
Internet Engineering Task Force (IETF)                          J. Snell
Request for Comments: 6721                                September 2012
Category: Standards Track
ISSN: 2070-1721

                    The Atom "deleted-entry" Element

Abstract

   This specification adds mechanisms to the Atom Syndication Format
   that publishers of Atom Feed and Entry documents can use to
   explicitly identify Atom entries that have been removed.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc6721.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Snell                        Standards Track                    [Page 1]
RFC 6721                   Atom deleted-entry             September 2012

Table of Contents

   1. Introduction ....................................................2
   2. Notational Conventions ..........................................2
   3. The at:deleted-entry Element ....................................2
   4. Deleted Entry Document ..........................................5
   5. Digital Signatures ..............................................6
   6. Encryption ......................................................7
   7. Security Considerations .........................................7
   8. IANA Considerations .............................................8
   9. Acknowledgements ................................................9
   10. Normative References ...........................................9

1.  Introduction

   Atom [RFC4287] is an XML-based document format that describes lists
   of related information known as "feeds".  Feeds are composed of a
   number of items known as "entries", each with an extensible set of
   attached metadata.  The primary use case that Atom addresses is the
   syndication of Web content, such as weblogs and news headlines to Web
   sites as well as directly to user agents.

   In the base Atom format, when an entry is removed from a feed but a
   consumer has already received and processed that entry, perhaps
   adding it to a local cache or display, there is no mechanism for
   determining that the entry has been removed.  This specification adds
   a mechanism to the Atom Syndication Format that publishers of Atom
   Feed and Entry documents can use to explicitly identify Atom entries
   that have been removed.  Atom consumers can use that information to
   adjust such things as their document cache and user interfaces.

2.  Notational Conventions

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

   This specification uses XML Namespaces [W3C.REC-xml-names-19990114]
   to uniquely identify XML element names.  It uses the following
   namespace prefix for the indicated namespace URI:

    "at": "http://purl.org/atompub/tombstones/1.0"

3.  The at:deleted-entry Element

   The at:deleted-entry element represents an Atom Entry that has been
   removed.

Snell                        Standards Track                    [Page 2]
RFC 6721                   Atom deleted-entry             September 2012

     deletedEntry =
       element at:deleted-entry {
         atomCommonAttributes,
         attribute ref { atomUri },
         attribute when { atomDateConstruct },
         ( element at:by { atomPersonConstruct }?
         & element at:comment { atomTextConstruct }?
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