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Network Working Group J. Snell, Ed.
Internet-Draft IBM
Expires: June 30, 2007 December 27, 2006
The application/atom+xml Type Parameter
draft-ietf-atompub-typeparam-00.txt
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Copyright Notice
Copyright (C) The IETF Trust (2006).
Abstract
The Atom Syndication Format (RFC 4287) defines the 'application/
atom+xml' media type to identify both Atom Feed and Atom Entry
Documents. This document defines an optional 'type' parameter used
to differentiate the two types of Atom documents.
Editorial Note
To provide feedback on this Internet-Draft, join the atom-protocol
mailing list (http://www.imc.org/atom-protocol/index.html) [1].
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Notational Conventions . . . . . . . . . . . . . . . . . . . . 3
3. The 'type' parameter . . . . . . . . . . . . . . . . . . . . . 3
4. Conformance . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 4
6. Security Considerations . . . . . . . . . . . . . . . . . . . . 4
7. Normative References . . . . . . . . . . . . . . . . . . . . . 4
Appendix A. Contributors . . . . . . . . . . . . . . . . . . . . . 4
Appendix B. Revision History . . . . . . . . . . . . . . . . . . . 4
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 5
Intellectual Property and Copyright Statements . . . . . . . . . . 6
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1. Introduction
The Atom Syndication Format [RFC4287] defines two types of documents
that can be identified using the 'application/atom+xml' media type.
Implementation experience has demonstrated, however, that Atom Feed
and Entry Documents can have different processing models and there
are situations where they need to be differentiated.
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].
3. The 'type' parameter
This document defines a new "type" parameter for use with the
'application/atom+xml' media type.
type = "entry" / "feed"
Neither the parameter name nor its value are case sensitive.
The value 'entry' indicates that the media type identifies an Atom
Entry Document. The root element of the document MUST be atom:entry.
The value 'feed' indicates that the media type identifies an Atom
Feed Document. The root element of the document MUST be atom:feed.
If not specified, the type is assumed to be unspecified, requiring
Atom processors to examine the root element to determine the type of
Atom document.
4. Conformance
New specifications MAY require that the type parameter be used to
identify the Atom Document type. Producers of Atom Entry Documents
SHOULD use the type parameter regardless of whether or not it is
required. Producers of Atom Feed Documents MAY use the parameter.
Atom processors that do not recognize the 'type' parameter MUST
ignore its value and examine the root element to determine the
document type.
Atom processors that do recognize the parameter SHOULD detect and
report inconsistencies between the parameter's value and the actual
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type of the document's root element.
5. IANA Considerations
IANA is requested to add a reference to this specification in the
'application/atom+xml' media type registration.
6. Security Considerations
The security considerations discussed in Section 8 of [RFC4287]
apply.
7. Normative References
[RFC2046] Freed, N. and N. Borenstein, "Multipurpose Internet Mail
Extensions (MIME) Part Two: Media Types", RFC 2046,
November 1996.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC4287] Nottingham, M., Ed. and R. Sayre, Ed., "The Atom
Syndication Format", RFC 4287, December 2005.
[1] <http://www.imc.org/atom-protocol/index.html>
Appendix A. Contributors
The content and concepts within are a product of the Atom community
and the Atompub Working Group.
[[anchor9: chairs to compile a contribution list for 1.0 --snell]]
Appendix B. Revision History
draft-ietf-atompub-typeparam-00: Initial Draft
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Author's Address
James M Snell (editor)
IBM
285 W Bullard Ave.
Fresno, CA 93704
US
Phone: +1 919 227 3750
Email: jasnell@gmail.com
URI: http://ibm.com/
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Intellectual Property Statement
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Acknowledgment
Funding for the RFC Editor function is currently provided by the
Internet Society.
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