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RDF Site Summary 1.0 Modules: Syndication
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" > <head> <title>RDF Site Summary 1.0 Modules: Syndication</title> <link rel="stylesheet" type="text/css" href="../../style.css" /> </head> <body> <h1>RDF Site Summary 1.0 Modules: Syndication</h1> <!-- Authors --> <h2><a name="authors">Authors</a></h2> <p>The members of the RSS-DEV Working Group:-</p> <dl> <dt><a href="mailto:begeddov@jfinity.com">Gabe Beged-Dov</a>, <a href="http://www.jfinity.com">JFinity Systems LLC</a></dt> <dt><a href="mailto:daniel.brickley@bristol.ac.uk">Dan Brickley</a>, <a href="http://www.ilrt.bris.ac.uk/discovery/">ILRT</a></dt> <dt><a href="mailto:rael@oreilly.com">Rael Dornfest</a>, <a href="http://www.oreilly.com">O'Reilly & Associates</a></dt> <dt><a href="mailto:ian@calaba.com">Ian Davis</a>, <a href="http://www.calaba.com">Calaba, Ltd.</a></dt> <dt><a href="mailto:ldodds@ingenta.com">Leigh Dodds</a>, <a href="http://www.xmlhack.com">xmlhack</a></dt> <dt><a href="mailto:eisen@pobox.com">Jonathan Eisenzopf</a>, <a href="http://www.wwind.com">Whirlwind Interactive</a></dt> <dt><a href="mailto:david@moreover.com">David Galbraith</a>, <a href="http://www.moreover.com">Moreover.com</a></dt> <dt><a href="mailto:guha@guha.com">R.V. Guha</a>, <a href="http://www.guha.com">guha.com</a></dt> <dt><a href="mailto:ken@bitsko.slc.ut.us">Ken MacLeod</a>, <a href="http://bitsko.slc.ut.us/">(Independent)</a></dt> <dt><a href="mailto:emiller@oclc.org">Eric Miller</a>, <a href="http://www.oclc.org">Online Computer Library Center, Inc.</a></dt> <dt><a href="mailto:aaron@theinfo.org">Aaron Swartz</a>, <a href="http://www.theinfo.org">The Info Network</a></dt> <dt><a href="mailto:vdv@dyomedea.com">Eric van der Vlist</a>, <a href="http://www.dyomedea.com">Dyomedea</a></dt> </dl> <!-- Version --> <h2><a name="version">Version</a></h2> <p><strong>Latest Version:</strong> <a href="http://purl.org/rss/1.0/modules/syndication/">http://purl.org/rss/1.0/modules/syndication/</a></p> <div class="version">1.4.1 2000-12-20 (editor: <a href="mailto:sean@mysterylights.com">SBP</a> - cleaned up markup)</div> <div class="version">1.4 2000-12-09</div> <!-- Status --> <h2><a name="status">Status</a></h2> <p> <a href="http://www.egroups.com/surveys/rss-dev?id=444214">Release</a> </p> <!-- Rights --> <h2><a name="rights">Rights</a></h2> <p> Copyright © 2000 by the Authors. </p> <p> Permission to use, copy, modify and distribute the RDF Site Summary 1.0 Specification and its accompanying documentation for any purpose and without fee is hereby granted in perpetuity, provided that the above copyright notice and this paragraph appear in all copies. The copyright holders make no representation about the suitability of the specification for any purpose. It is provided "as is" without expressed or implied warranty. </p> <p> This copyright applies to the RDF Site Summary 1.0 Specification and accompanying documentation and does not extend to the RSS format itself. </p> <h2><a name="description">Description</a></h2> <p> Provides syndication hints to aggregators and others picking up this RDF Site Summary (RSS) feed regarding how often it is updated. For example, if you updated your file twice an hour, updatePeriod would be "hourly" and updateFrequency would be "2". The syndication module borrows from Ian Davis's <a href="http://InternetAlchemy.org/ocs/">Open Content Syndication (OCS)</a> directory format. It supercedes the RSS 0.91 skipDay and skipHour elements. </p> <p> <em>updatePeriod</em><br /> Describes the period over which the channel format is updated. Acceptable values are: hourly, daily, weekly, monthly, yearly. If omitted, daily is assumed. </p> <p> <em>updateFrequency</em><br /> Used to describe the frequency of updates in relation to the update period. A positive integer indicates how many times in that period the channel is updated. For example, an updatePeriod of daily, and an updateFrequency of 2 indicates the channel format is updated twice daily. If omitted a value of 1 is assumed. </p> <p> <em>updateBase</em><br /> Defines a base date to be used in concert with updatePeriod and updateFrequency to calculate the publishing schedule. The date format takes the form: yyyy-mm-ddThh:mm </p> <h2><a name="namespaces">Namespace Declarations</a></h2> <ul> <li><b>xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"</b></li> </ul> <h2><a name="model">Model</a></h2> <p> <em><channel> Elements:</em></p> <ul> <li><b><sy:updatePeriod></b> ( 'hourly' | 'daily' | 'weekly' | 'monthly' | 'yearly' )</li> <li><b><sy:updateFrequency></b> ( a positive integer )</li> <li><b><sy:updateBase></b> ( #PCDATA ) [<a href="http://www.w3.org/TR/NOTE-datetime">W3CDTF</a>]</li> </ul> <h2><a name="example">Example</a></h2> <pre><?xml version="1.0" encoding="utf-8"?> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" <span class="example-syn">xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"</span> xmlns="http://purl.org/rss/1.0/" > <channel rdf:about="http://meerkat.oreillynet.com/?_fl=rss1.0"> <title>Meerkat</title> <link>http://meerkat.oreillynet.com</link> <description>Meerkat: An Open Wire Service</description> <span class="example-syn"><sy:updatePeriod>hourly</sy:updatePeriod> <sy:updateFrequency>2</sy:updateFrequency> <sy:updateBase>2000-01-01T12:00+00:00</sy:updateBase></span> <image rdf:resource="http://meerkat.oreillynet.com/icons/meerkat-powered.jpg" /> <items> <rdf:Seq> <rdf:li resource="http://c.moreover.com/click/here.pl?r123" /> </rdf:Seq> </items> <textinput rdf:resource="http://meerkat.oreillynet.com" /> </channel> <image rdf:about="http://meerkat.oreillynet.com/icons/meerkat-powered.jpg"> <title>Meerkat Powered!</title> <url>http://meerkat.oreillynet.com/icons/meerkat-powered.jpg</url> <link>http://meerkat.oreillynet.com</link> </image> <item rdf:about="http://c.moreover.com/click/here.pl?r123"> <title>XML: A Disruptive Technology</title> <link>http://c.moreover.com/click/here.pl?r123</link> <description> XML is placing increasingly heavy loads on the existing technical infrastructure of the Internet. </description> </item> <textinput rdf:about="http://meerkat.oreillynet.com"> <title>Search Meerkat</title> <description>Search Meerkat's RSS Database...</description> <name>s</name> <link>http://meerkat.oreillynet.com/</link> </textinput> </rdf:RDF></pre> </body> </html>