RDF without <RDF> tags generates empty set of triples

• From: Graham Klyne <GK@NineByNine.org>
• Date: Thu, 06 Sep 2001 17:03:21 +0100
• To: www-rdf-validator@w3.org
• Message-Id: <5.1.0.14.2.20010906170014.00a07550@joy.songbird.com>

The RDF spec allows the <RDF> tags to be omitted when the content is known 
to be RDF.

The following sample parsed without errors but did not generate any triples:

      <Presence xmlns="http://www.ietf.org/ns/cpim-pidf-xml-1.0/"
                xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
                rdf:about="pres:shingo_fujimoto@jp.fujitsu.com">
        <tuple>
          <Tuple-data>
            <name>mobile-phone</name>
            <value>open</value>
            <contact rdf:resource="tel:09012345678"/>
            <priority>9</priority>
          </Tuple-data>
        </tuple>
        <tuple>
          <Tuple-data>
            <name>mobile-im</name>
            <value>open</value>
            <contact rdf:resource="im:shingo@mobilecarrier.ne.jp"/>
            <priority>1</priority>
          </Tuple-data>
        </tuple>
      </Presence>

Adding the <RDF> tags causes the expected triples to be generated.

(PS: your feedback box/button crashed by Opera browser.)

#g



------------
Graham Klyne
(GK@ACM.ORG)

Received on Thursday, 6 September 2001 12:13:26 UTC