function getBNodeClosure($res, $sourcem, &$outm)
{
$resourcem = $sourcem->find($res, NULL, NULL);
$it = $resourcem->getStatementIterator();
while ($it->hasNext()) {
$stmt = $it->next();
$outm->add(new Statement($res, $stmt->predicate(), $stmt->object()));
if (is_a($stmt->object(), 'BlankNode')) {
getBNodeClosure($stmt->object(), $sourcem, $outm);
}
}
}
function generateResultStatementsFromVarResult(&$result, $parsedq, &$outm, $closure, &$model)
{
foreach ($parsedq['patterns'] as $n => $pattern) {
if (substr($pattern['subject']['value'], 0, 1) == '?') {
$subj = $result[$pattern['subject']['value']];
} else {
$subj = new Resource($pattern['subject']['value']);
}
if (substr($pattern['predicate']['value'], 0, 1) == '?') {
$pred = $result[$pattern['predicate']['value']];
} else {
$pred = new Resource($pattern['predicate']['value']);
}
if (substr($pattern['object']['value'], 0, 1) == '?') {
$obj = $result[$pattern['object']['value']];
} else {
if ($pattern['object']['is_literal']) {
$obj = new Literal($pattern['object']['value']);
$obj->setDatatype($pattern['object']['l_dtype']);
$obj->setLanguage($pattern['object']['l_lang']);
} else {
$obj = new Resource($pattern['object']['value']);
}
}
$stmt = new Statement($subj, $pred, $obj);
// bNode closure
if (is_a($stmt->object(), 'BlankNode') && $closure == True) {
getBNodeClosure($stmt->object(), $model, $outm);
}
if (is_a($stmt->subject(), 'BlankNode') && $closure == True) {
getBNodeClosure($stmt->subject(), $model, $outm);
}
// Add statement to model
$outm->add($stmt);
}
}
/**
* SPO (also known as "Triples" or "find(spo)") is an experimental minimal query language.
* An SPO query is a single triple pattern, with optional subject (parameter "s"), predicate (parameter "p"),
* and object (parameter "o", if a URIref, parameter "v" for a string literal).
* Absence of a parameter implies "any" for matching that slot of the triple pattern.
*
* @version $Id: spo.php 268 2006-05-15 05:28:09Z tgauss $
* @author Chris Bizer <*****@*****.**>
* @author Phil Dawes <*****@*****.**>
*
* @package netapi
* @todo Support typed literals.
* @access public
*/
function spoQuery($model, $serializer, $remove = false, $modelId = false)
{
// Get SPO query from HTTP request
if (isset($_REQUEST['s'])) {
$subject = new Resource($_REQUEST['s']);
} else {
$subject = NULL;
}
if (isset($_REQUEST['p'])) {
$predicate = new Resource($_REQUEST['p']);
} else {
$predicate = NULL;
}
if (isset($_REQUEST['o'])) {
$object = new Resource($_REQUEST['o']);
} else {
if (isset($_REQUEST['v'])) {
$object = new Literal($_REQUEST['v']);
} else {
$object = NULL;
}
}
if (isset($_REQUEST['closure'])) {
if (strtoupper($_REQUEST['closure']) == "TRUE") {
$closure = True;
} else {
$closure = False;
}
} else {
$closure = False;
}
$outm = new MemModel();
$resultmodel = $model->find($subject, $predicate, $object);
$it = $resultmodel->getStatementIterator();
while ($it->hasNext()) {
$stmt = $it->next();
if ($remove) {
$model->remove($stmt);
} else {
$outm->add(new Statement($stmt->subject(), $stmt->predicate(), $stmt->object()));
if (is_a($stmt->object(), 'BlankNode') && $closure == True) {
getBNodeClosure($stmt->object(), $model, $outm);
}
if (is_a($stmt->subject(), 'BlankNode') && $closure == True) {
getBNodeClosure($stmt->subject(), $model, $outm);
}
}
}
if ($remove) {
if (substr($modelId, 0, 5) == "file:") {
$model->saveAs(substr($modelId, 5));
}
if ($resultmodel->size() > 0) {
header('200 - OK');
echo "200 - OK";
} else {
echo "No matching statements";
}
} else {
echo $serializer->Serialize($outm);
}
$outm->close();
}
