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ObjectPropertyRestriction.php
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ObjectPropertyRestriction.php
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<?php
/**
* Created by PhpStorm.
* User: roll
* Date: Sep 3, 2010
* Time: 5:08:13 PM
* To change this template use File | Settings | File Templates.
*/
class ObjectPropertyRestriction extends ClassExpression implements IRestriction{
private $classExpression;
private $objectPropertyExpression;
function __construct($objectPropertyExpression, $classExpression=null) {
$this->objectPropertyExpression = $objectPropertyExpression;
$this->classExpression = $classExpression;
}
public function __toString() {
return $this->objectPropertyExpression . " " . $this->getRestrictionLabel()
. ($this->classExpression? " " . $this->classExpression : "");
}
protected function getClassExpression(){
return $this->classExpression;
}
protected function getObjectPropertyExpression(){
return $this->objectPropertyExpression;
}
public function getRestrictionLabel() {
throw new Exception("don't call directly!");
}
public function toRdfArray() {
$bnodeId = RdfArray::getNewBnodeId();
$retval = RdfArray::createArray($bnodeId, "rdf:type", "owl:Restriction");
$retval []= RdfArray::createArray($bnodeId, "owl:onProperty", $this->getObjectPropertyExpression());
$retval []= RdfArray::createArray($bnodeId, $this->getPredicateString(), $this->getClassExpression());
return $retval;
}
}