Author: as
Date: Fri Jan 18 10:21:18 2008
New Revision: 7174
Log:
- Added a table of equivalence for feed elements.
Modified:
trunk/Feed/docs/specifications.txt
Modified: trunk/Feed/docs/specifications.txt
==============================================================================
--- trunk/Feed/docs/specifications.txt [iso-8859-1] (original)
+++ trunk/Feed/docs/specifications.txt [iso-8859-1] Fri Jan 18 10:21:18 2008
@@ -8,6 +8,56 @@
.. contents:: Table of Contents
+Feeds equivalence
+=================
+
+Feed elements
+-------------
+
++---------------------+----------------------------+-------------------------+
+| ATOM | RSS1 | RSS2 |
++=====================+============================+=========================+
+| |ATOM-id|_ R | |RSS1-about|_ R | ? |
++---------------------+----------------------------+-------------------------+
+| |ATOM-title|_ R | |RSS1-title|_ R | |RSS2-title|_ R |
++---------------------+----------------------------+-------------------------+
+| |ATOM-updated|_ R | ? | |RSS2-lastBuildDate|_ |
++---------------------+----------------------------+-------------------------+
+| |ATOM-author|_ R* | ? | |RSS2-managingEditor|_ |
++---------------------+----------------------------+-------------------------+
+| |ATOM-subtitle|_ | |RSS1-description|_ R | |RSS2-description|_ R |
++---------------------+----------------------------+-------------------------+
+| |ATOM-link|_ R | |RSS1-link|_ R | |RSS2-link|_ R |
++---------------------+----------------------------+-------------------------+
+| |ATOM-entry|_ | |RSS1-item|_ R | |RSS2-item|_ R |
++---------------------+----------------------------+-------------------------+
+
+| R = required
+| * = special requirements
+| ? = no equivalence
+
+.. |ATOM-id| replace:: id
+.. |ATOM-title| replace:: title
+.. |ATOM-updated| replace:: updated
+.. |ATOM-author| replace:: author
+.. |ATOM-subtitle| replace:: subtitle
+.. |ATOM-link| replace:: link
+.. |ATOM-entry| replace:: entry
+
+.. |RSS1-about| replace:: about
+.. |RSS1-title| replace:: title
+.. |RSS1-description| replace:: description
+.. |RSS1-link| replace:: link
+.. |RSS1-item| replace:: item
+
+.. |RSS2-title| replace:: title
+.. |RSS2-lastBuildDate| replace:: lastBuildDate
+.. |RSS2-managingEditor| replace:: managingEditor
+.. |RSS2-description| replace:: description
+.. |RSS2-link| replace:: link
+.. |RSS2-item| replace:: item
+
+
ATOM
====
@@ -30,7 +80,7 @@
General information:
- All elements must be in the http://www.w3.org/2005/Atom namespace
- The top level element is called *feed*
- - All timestamps must conform to `RFC 3339`_ (eg. 2003-12-13T18:30:02Z)
+ - All timestamps must conform to `RFC 3339`_ (eg. ``2003-12-13T18:30:02Z``)
- Unless otherwise specified, all values must be plain text
- *xml:lang* may be used to identify the language of text
- *xml:base* may be used to control how relative URIs are resolved
@@ -70,6 +120,8 @@
A universally unique and permanent URI for a feed. For example, it can be an
Internet domain name.
+Required.
+
Equivalents: `ATOM-id`_, `RSS1-about`_, RSS2-none.
@@ -81,6 +133,8 @@
Human readable title for the feed. For example, it can be the same as the
website title.
+Required.
+
Equivalents: `ATOM-title`_, `RSS1-title`_, `RSS2-title`_.
@@ -91,7 +145,9 @@
The last time the feed was updated.
-Must conform to `RFC 3339`_ (eg. 2003-12-13T18:30:02Z).
+Required.
+
+Must conform to `RFC 3339`_ (eg. ``2003-12-13T18:30:02Z``).
Equivalents: `ATOM-updated`_, RSS1-none, `RSS2-lastBuildDate`_.
@@ -103,9 +159,10 @@
One author of the feed.
+Required: one author must be present unless all items contain at least one
+author.
+
Multiple authors can appear.
-
-One author must be present unless all items contain at least one author.
Required elements: *name*. Optional elements: *uri*, *email*.
@@ -127,14 +184,14 @@
The URL to the HTML website corresponding to the channel.
+Required: a link back to the feed itself must be present (with *rel="self"*).
+
Multiple links can appear.
Required attributes: *href*. Optional attributes: *rel* (possible values:
*alternate*, *enclosure*, *related*, *self*, *via*), *type*, *hreflang*,
*title*, *length*).
-A link back to the feed itself must be present (with *rel="self"*).
-
A maximum of one link with *rel="alternate"* can appear per *type* and
*hreflang*.
@@ -187,6 +244,8 @@
A universally unique and permanent URI for a feed. For example, it can be an
Internet domain name.
+Required.
+
Equivalents: `ATOM-id`_, `RSS1-about`_, RSS2-none.
@@ -198,6 +257,8 @@
Human readable title for the feed. For example, it can be the same as the
website title.
+Required.
+
Equivalents: `ATOM-title`_, `RSS1-title`_, `RSS2-title`_.
@@ -208,6 +269,8 @@
A short description of the feed.
+Required.
+
Equivalents: `ATOM-subtitle`_, `RSS1-description`_, `RSS2-description`_.
@@ -218,6 +281,8 @@
The URL to the HTML website corresponding to the channel.
+Required.
+
Equivalents: `ATOM-link`_, `RSS1-link`_, `RSS2-link`_.
@@ -228,9 +293,9 @@
Feed entry.
+Required: at least one item must appear.
+
Multiple entries can appear.
-
-At least one item must appear.
Equivalents: `ATOM-entry`_, `RSS1-item`_, `RSS2-item`_.
@@ -259,6 +324,8 @@
Human readable title for the feed. For example, it can be the same as the
website title.
+Required.
+
Equivalents: `ATOM-title`_, `RSS1-title`_, `RSS2-title`_.
@@ -269,6 +336,8 @@
A short description of the feed.
+Required.
+
Equivalents: `ATOM-subtitle`_, `RSS1-description`_, `RSS2-description`_.
@@ -279,6 +348,8 @@
The URL to the HTML website corresponding to the channel.
+Required.
+
Equivalents: `ATOM-link`_, `RSS1-link`_, `RSS2-link`_.
@@ -289,9 +360,9 @@
Feed entry.
+Required: at least one item must appear.
+
Multiple entries can appear.
-
-At least one item must appear.
Equivalents: `ATOM-entry`_, `RSS1-item`_, `RSS2-item`_.
@@ -303,7 +374,7 @@
The last time the feed was updated.
-Must conform to `RFC 822`_ (eg. Sat, 07 Sep 2002 09:42:31 GMT).
+Must conform to `RFC 822`_ (eg. ``Sat, 07 Sep 2002 09:42:31 GMT``).
Equivalents: `ATOM-updated`_, RSS1-none, `RSS2-lastBuildDate`_.
@@ -320,6 +391,14 @@
Item elements
-------------
+
+
+Resources
+=========
+
+- `RFC 4287`_ ATOM specifications.
+- `RSS1`_ specifications.
+- `RSS2`_ specifications.
.. _RSS1: http://web.resource.org/rss/1.0/spec
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