I've been continuing to tweak the comments extension and believe that I
am nearing a stable enough version to draft up the I-D. Here's what
I've got currently:
http://www.snellspace.com/wp/?p=194
There are three link relations:
* http://purl.org/syndication/thread/1.0/comments
* http://purl.org/syndication/thread/1.0/root
* http://purl.org/syndication/thread/1.0/in-reply-to
/comments provides the URL (dereferencable) to an Atom feed that
contains comment entries and may appear within atom:feed and/or atom:entry
/root provides the URL (dereferencable) to the Atom feed that contains
the original entries and may appear within atom:feed and/or atom:entry
/in-reply-to provides the atom:id (not dereferencable) of an original
atom:entry and may appear within atom:feed or atom:entry. in-reply-to
on the feed level indicates that all of the entries within the feed are
considered replies to the identified atom:entry.
all of these link relations may appear more than once (e.g. an entry can
be a reply to multiple entries from multiple feeds.
Example 1: A weblog with a main feed and a comments feed
Feed A: Main entry feed
Feed B: Comments feed
<!-- Feed A -->
<feed>
...
<link rel="http://purl.org/syndication/thread/1.0/comments";
href="http://example.com/feedb.xml"; />
<entry>
<id>tag:entry:1</id>
...
</entry>
</feed>
<!-- Feed B -->
<feed>
...
<link rel="http://purl.org/syndication/thread/1.0/root";
href="http://example.com/feeda.xml"; />
<entry>
<id>tag:entry:1:1</id>
<link rel="http://purl.org/syndication/thread/1.0/in-reply-to";
href="tag:entry:1" />
...
</entry>
</feed>
Example 2: A post on one weblog responds to a post on another weblog
Feed A: Blog 1 feed
Feed B: Blog 2 feed
<!-- Feed A -->
<feed>
...
<entry>
<id>tag:blog-a:entry:1</id>
...
</entry>
</feed>
<!-- Feed B -->
<feed>
...
<entry>
<id>tag:blog-b:entry:1</id>
<link rel="http://purl.org/syndication/thread/1.0/root";
href="http://blog-a.com/feeda.xml"; />
<link rel="http://purl.org/syndication/thread/1.0/in-reply-to";
href="tag:blog-a:entry:1" />
...
</entry>
</feed>
Feedback requested.
- James
