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On 15/01/13 17:49, hlel emna wrote:
hi,
how I can added une relation n_ary with jena (3-ary).
OntClass f = m.createClass(ns+ "femme" );
OntClass h = m.createClass(ns+ "homme" );
OntClass hh = m.createClass(ns+ "date" );
ObjectProperty ma = m.createObjectProperty(ns + "marier" );
First, study the suggestion from Joshua Taylor. He proposes an anonymous
resource - a bnode - to represent the instance of the n-ary relation,
and then predicates connecting that bnode to the members of the
relationship.
I'm going to generalise the example slightly, to allow for civil
partnerships and same-sex marriages (I know that's politically correct,
but it's my example code so I can :). So let's assume that a marriage is
between two people, partner1 and partner2, and that it must have a date
that it started, and it may have a date on which it ended. Code here:
https://gist.github.com/4543371
Output:
[] a eg:Marriage ;
eg:partner1 eg:fred ;
eg:partner2 eg:wilma ;
eg:started "-500-01-01"^^xsd:date .
Ian
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