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POUpdating values of functional data properties doesn't remove old values, only adds new triples
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2013-11-18T10:50:49.577
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2013-11-18T15:16:47.240
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2013-11-18T15:16:47.240
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Body
<p>I have an RDF Ontology with a functional property <code>hasTrendValue</code> which relates instances of a class with integer values. I want to change these values programmatically using Jena. I tried the following code: </p> <pre class="lang-java prettyprint-override"><code>Property hasTrend = ontModel.getDatatypeProperty(preFix+"hasTrendValue"); Individual regionQualifier = ontModel.getIndividual(activityName); ontModel.addLiteral(regionQualifier,hasTrend,34); PrintStream p = new PrintStream(ontoPath); ontModel.write(p,null); p.close(); </code></pre> <p>This code executes correctly but, it does not update the already <code>hasTrendValue</code> value in the RDF; instead it adds a new <code>hasTrendValue</code> to the RDF ontology even though it declared as a functional property. What is the better way of doing this? </p>
Tags
<java><rdf><jena><owl><ontology>
Title
Updating values of functional data properties doesn't remove old values, only adds new triples
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1. USJoshua Taylor
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1. USProceso
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