/** Non implemented method (only defined)
@author Frederick Giasson, Structured Dynamics LLC.
*/
public function pipeline_serialize_reification()
{
$rdf_reification = "";
switch ($this->conneg->getMime()) {
case "application/rdf+n3":
$xml = new ProcessorXML();
$xml->loadXML($this->pipeline_getResultset());
$subjects = $xml->getSubjects();
$bnodeCounter = 0;
foreach ($subjects as $subject) {
$predicates = $xml->getPredicates($subject);
foreach ($predicates as $predicate) {
$predicateType = $xml->getType($predicate, FALSE);
$objects = $xml->getObjects($predicate);
foreach ($objects as $object) {
$reifies = $xml->getReificationStatements($object);
$first = 0;
foreach ($reifies as $reify) {
if ($first == 0) {
// $rdf_reification .= "_:bnode".$bnodeCounter." a rdf:Statement ;\n";
$rdf_reification .= "_:" . md5($xml->getURI($subject) . $predicateType . $xml->getURI($object)) . " a rdf:Statement ;\n";
$bnodeCounter++;
$rdf_reification .= " rdf:subject <" . $xml->getURI($subject) . "> ;\n";
$rdf_reification .= " rdf:predicate <" . $predicateType . "> ;\n";
$rdf_reification .= " rdf:object <" . $xml->getURI($object) . "> ;\n";
}
$first++;
$reifyingProperty = $xml->getType($reify, FALSE);
$rdf_reification .= " <{$reifyingProperty}> \"" . $xml->getValue($reify) . "\" ;\n";
}
if ($first > 0) {
$bnodeCounter++;
$rdf_reification = substr($rdf_reification, 0, strlen($rdf_reification) - 2) . ".\n\n";
}
}
}
}
return $rdf_reification;
break;
case "application/rdf+xml":
$xml = new ProcessorXML();
$xml->loadXML($this->pipeline_getResultset());
$subjects = $xml->getSubjects();
foreach ($subjects as $subject) {
$predicates = $xml->getPredicates($subject);
foreach ($predicates as $predicate) {
$predicateType = $xml->getType($predicate, FALSE);
$objects = $xml->getObjects($predicate);
foreach ($objects as $object) {
$reifies = $xml->getReificationStatements($object);
$first = 0;
foreach ($reifies as $reify) {
if ($first == 0) {
// $rdf_reification .= " <rdf:Statement>\n";
$rdf_reification .= " <rdf:Statement rdf:about=\"" . $this->xmlEncode(md5($xml->getURI($subject) . $predicateType . $xml->getURI($object))) . "\">\n";
$rdf_reification .= " <rdf:subject rdf:resource=\"" . $this->xmlEncode($xml->getURI($subject)) . "\" />\n";
$rdf_reification .= " <rdf:predicate rdf:resource=\"" . $this->xmlEncode($predicateType) . "\" />\n";
$rdf_reification .= " <rdf:object rdf:resource=\"" . $this->xmlEncode($xml->getURI($object)) . "\" />\n";
}
$first++;
$nsId = count($this->namespaces);
$reifyingProperty = $xml->getType($reify, FALSE);
$ns = $this->getNamespace($reifyingProperty);
$ptNs = $ns[0];
$ptExtension = $ns[1];
if (!isset($this->namespaces[$ptNs])) {
// Make sure the ID is not already existing. Increase the counter if it is the case.
while (array_search("ns" . $nsId, $this->namespaces) !== FALSE) {
$nsId++;
}
$this->namespaces[$ptNs] = "ns" . $nsId;
}
$rdf_reification .= " <" . $this->namespaces[$ptNs] . ":" . $ptExtension . ">" . $xml->getValue($reify) . "</" . $this->namespaces[$ptNs] . ":" . $ptExtension . ">\n";
}
if ($first > 0) {
$rdf_reification .= " </rdf:Statement> \n\n";
}
}
}
}
return $rdf_reification;
break;
}
}
