70 lines
1.9 KiB
Plaintext
70 lines
1.9 KiB
Plaintext
head 1.1;
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access;
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symbols;
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locks; strict;
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comment @# @;
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1.1
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date 2008.09.20.17.50.04; author BobMorris; state Exp;
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branches;
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next ;
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desc
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@none
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@
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1.1
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log
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@none
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@
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text
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@%META:TOPICINFO{author="BobMorris" date="1221933004" format="1.1" reprev="1.1" version="1.1"}%
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%META:TOPICPARENT{name="PlaziEOLProject"}%
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Copied verbatim from the [[http://www.adobe.com/devnet/xmp/pdfs/xmp_specification.pdf Adobe XMP Specification]], pp. 29-30: :
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<table>
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<tr>
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<td width="30"/><td width="300">
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The formal definition of RDF transforms the XML representation into triples in a manner
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that catenates XML namespace URI strings with the local part of XML element and attribute
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names. This can lead to ambiguities if the URI does not end in separator such as '/' or '#'. This
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is not a problem for Adobe software, which does not utilize the triple representation. But it
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could be a problem in other implementations of XMP, or if the RDF form of XMP were fed to
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a traditional RDF processor.<br/>
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Here is an artificial example of RDF that produces ambiguities in the triples:
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</td>
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</tr>
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<tr>
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<td width="30"/><td>
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<verbatim>
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<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
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<rdf:Description rdf:about="bogus:example"
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xmlns:ns1="bogus:namespace" xmlns:ns2="bogus:name">
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<ns1:ship>value of ns1:ship</ns1:ship>
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<ns2:spaceship>value of ns2:spaceship</ns2:spaceship>
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</rdf:Description>
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</rdf:RDF>
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</verbatim>
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</td></tr>
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<tr>
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<td width="30"/><td width="300">
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Here are the ambiguous RDF triples, notice that the two predicates are the same:
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</td></tr>
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<tr>
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<td width="30"/><td>
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Subject: bogus:example<br/>
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Predicate: bogus:namespaceship<br/>
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Object: "value of ns1:ship"<br/><br/>
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Subject: bogus:example<br/>
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Predicate: bogus:namespaceship<br/>
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Object: "value of ns2:spaceship"<br/>
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</td></tr>
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</table>
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%SEARCH{"%TOPIC%" excludetopic="%TOPIC%" header="---++Linking Topics" format=" * $topic" nosearch="on" nototal="on" }%
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@
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