This is excellent to see. I'm glad to see that you were not afraid to break the syntax rules to get things started. :-) The format looks good.
On Thu, 3 Feb 2005 21:50:51 -0500, Bob Wyman <[EMAIL PROTECTED]> wrote: > > > > At PubSub.com, we've started generating "CAP over Atom" files. By this I > mean we're publishing using Atom files to encapsulate a stream of message > which are encoded using the CAP (Common Alerting Protocol) format. See: > http://www.oasis-open.org/committees/download.php/6334/oasis-200402-cap-core-1.0.pdf > . > > Because CAP is an XML format, we're using atom:content elements with > type="text/xml". In order to ensure that there is something for aggregators > to display if they don't understand CAP, we're generating atom:summary > elements that contain a textual summary of the CAP message which is in the > atom:content. My hope is that aggregator developers will commonly implement > a pattern of displaying the atom:summary rather then the atom:content in > cases where they don't understand the XML type of the content element. > > I would appreciate any review comments that you might be able to make on our > use of Atom in this application. > > For a sample Atom feed containing CAP messages which describe recent > earthquakes, please see: > > http://atom.pubsub.com/c0/b8/bd62e8e48058c0425193b37ea6.xml > > A sample atom:entry extracted from this Atom Feed is below: > > > > <entry> > > <ps:nodeID>/pubsub/topics/301</ps:nodeID> > > <title><![CDATA[ Earthquake: M 1.6 (D) NORTHERN CALIFORNIA > 2005-02-04T02:00:43.100Z ]]></title> > > <issued>2005-02-03T21:04:42-05:00</issued> > > <modified>2005-02-03T21:04:42-05:00</modified> > > <id>tag:pubsub.com,2005:CAP:nc51156375</id> > > <link rel='alternate' type='text/html' > href='http://earthquake.usgs.gov/recenteqsUS/Quakes/nc51156375.htm'/> > > <summary>An earthquake occurred at 2005-02-04T02:00:43.100Z. The magnitude > 1.6 event has been located in NORTHERN CALIFORNIA. (This is a > computer-generated message and should not be considered authoritative.) > </summary> > > <content type='text/xml'> > > <alert xmlns="http://www.incident.com/cap/1.0";> > > <identifier>nc51156375</identifier> > > <sender>[EMAIL PROTECTED]</sender> > > <sent>2005-02-03T21:04:42-05:00</sent> > > <status>Test</status> > > <msgType>Alert</msgType> > > <scope>Public</scope> > > <incidents>nc51156375</incidents> > > <info> > > <category>Geo</category> > > <event>Earthquake</event> > > <urgency>Unknown</urgency> > > <severity>Unknown</severity> > > <certainty>Unknown</certainty> > > <senderName>Pubsub Earthquake Service</senderName> > > <headline>Earthquake: M 1.6 (D) NORTHERN CALIFORNIA > 2005-02-04T02:00:43.100Z</headline> > > <description>An earthquake occurred at 2005-02-04T02:00:43.100Z. The > magnitude 1.6 event has been located in NORTHERN CALIFORNIA. (This is a > computer-generated message and should not be considered authoritative.) > </description> > > > <web>http://earthquake.usgs.gov/recenteqsUS/Quakes/nc51156375.htm</web> > > <parameter>EventID=nc51156375</parameter> > > <parameter>Version=1</parameter> > > <parameter>Magnitude=1.6 MD</parameter> > > <parameter>Depth=2 km</parameter> > > <parameter>Verified=N</parameter> > > <area> > > <areaDesc>2 km depth at latitude 38.8168, longitude -122.7915 at > location: NORTHERN CALIFORNIA</areaDesc> > > <circle>38.8168,-122.7915 0</circle> > > </area> > > </info> > > </alert> > > </content> > > </entry> > > > > Note: I am aware of a few issues with our current use of Atom: > > 1. We often issue files that contain more than one entry with the same > atom:id. For instance, you might have a message which is followed in the > file by an update concerning the same "incident" or a "Cancel" message for > the event. I know this is a violation of the specification. We will > eventually stop doing thisâ Please bear with us. > > 2. We currently don't provide an atom:link element with > rel="alternate" when we insert a CAP "Cancel" message into the feed. This > is, of course, because we have no page to point to for a deleted or > cancelled event. In the future, we'll consider having all such Cancel > messages point to a common static help page which explains a variety of > reasons why a message may have been deleted. > > 3. If you view the Atom feed in a web browser, the result may not be > terribly pleasingâ We're still working on the style sheet. â Please pay > attention only to the source of the feedâ (i.e. do "View Source"). > > > > This service compliments the Earthquake service that I recently mentioned on > this list. We will be publishing both raw Earthquake messages/feeds as well > as CAP messages/feed in the future. These two formats are targeted at > different audiences. > > > > Your comments and/or suggestions would be appreciated. > > > > bob wyman > > -- - James Snell http://www.snellspace.com [EMAIL PROTECTED]
