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Ping the Semantic Web exportation pings lists
PingtheSemanticWeb.com exports its pings to crawlers or software agents who need them. That way, if you need to have
access to the latest updated RDF documents for your Web Application or your software agent you easily can read these
export files and then start crawling newly updated RDF files.
The export format
All the export files conform to the following XML document structure:
<pingthesemanticwebUpdate version="1.4" updated="2007-07-31 11:20:54">
<rdfdocument url="http://b4mad.net/datenbrei/index.php?sioc_type=post&sioc_id=300" created="2006-08-11 11:21:00" updated="2006-08-14 09:57:26" serialization="xml" ns="http://www.w3.org/1999/02/22-rdf-syntax-ns# http://xmlns.com/foaf/0.1/ ..."/>
</pingthesemanticwebUpdate>
The <pingthesemanticwebUpdate> element
Each export file contain a single pingthesemanticwebUpdate element. It has two attributes: version, updated; and any number of rdfdocuments sub-elements.
- version is a number. It is the version of the current export file format.
- updated is a string, it indicates when export file was requested/created.
The <rdfdocument> element
rdfdocument has four attributes: url, created, updated and topics:
- url is a string; it is the URL of an updated RDF document.
- created is a date; it is the time when this document as been pinging to PingtheSemanticWeb.com for the first time
- updated is a date; it is the time it have been updated for the last time.
- serialization is a string; it is a string that tell which serialization method is used to write the document; this variable can have the value "xml" or "n3".
- ns is a string; it is a list of space (%20) separeted namespace(s). If a namespace appears in this list, this mean that a resource has been typed (rdf:type) with a class defined in that ontology.
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