/**
* @note rdfs:subPropertyOf* where * means a property path of arbitrary length
* can be found using the "zero or more" will resolve the complete path
*
* @see http://www.w3.org/TR/sparql11-query/#propertypath-arbitrary-length
*/
private function tryToAddPropertyPathForSaturatedHierarchy(&$condition, DIProperty $property, &$propertyName)
{
if (!$this->compoundConditionBuilder->canUseQFeature(SMW_SPARQL_QF_SUBP) || !$property->isUserDefined()) {
return null;
}
if ($this->compoundConditionBuilder->getHierarchyFinder() == null || !$this->compoundConditionBuilder->getHierarchyFinder()->hasSubpropertyFor($property)) {
return null;
}
$subPropExpElement = $this->exporter->getSpecialPropertyResource('_SUBP', SMW_NS_PROPERTY);
$propertyByVariable = '?' . $this->compoundConditionBuilder->getNextVariable('sp');
$condition->weakConditions[$propertyName] = "\n" . "{$propertyByVariable} " . $subPropExpElement->getQName() . "*" . " {$propertyName} .\n" . "";
$propertyName = $propertyByVariable;
}
private function tryToAddClassHierarchyPattern($category, &$categoryExpName)
{
if (!$this->compoundConditionBuilder->canUseQFeature(SMW_SPARQL_QF_SUBC)) {
return '';
}
if ($this->compoundConditionBuilder->getHierarchyFinder() === null || !$this->compoundConditionBuilder->getHierarchyFinder()->hasSubcategoryFor($category)) {
return '';
}
$subClassExpElement = $this->exporter->getSpecialPropertyResource('_SUBC');
$classHierarchyByVariable = "?" . $this->compoundConditionBuilder->getNextVariable('sc');
$condition = "{$classHierarchyByVariable} " . $subClassExpElement->getQName() . "*" . " {$categoryExpName} .\n";
$categoryExpName = "{$classHierarchyByVariable}";
return $condition;
}
