private function getClassOntology($class)
{
if (isset($this->classOntologyCache[$class])) {
return $class;
} else {
$crudRead = new CrudReadQuery($this->network);
$classes = array();
foreach ($this->checkUsingOntologies as $ontology) {
$classes[] = $class;
}
$crudRead->uri($classes)->dataset($this->checkUsingOntologies)->mime('resultset')->send();
if ($crudRead->isSuccessful()) {
$resultset = $crudRead->getResultset()->getResultset();
$this->classOntologyCache[key($resultset)] = key($resultset);
return $this->classOntologyCache[key($resultset)];
} else {
return FALSE;
}
}
}
private function getTypeOntology($type)
{
if (isset($this->typeOntologyCache[$type])) {
return $type;
} else {
$crudRead = new CrudReadQuery($this->network);
$crudRead->uri($type)->mime('resultset')->send();
if ($crudRead->isSuccessful()) {
$resultset = $crudRead->getResultset()->getResultset();
return key($resultset);
} else {
return FALSE;
}
}
}
private function fixURIReference($unexistingURI, $affectedURI, $dataset)
{
$crudRead = new CrudReadQuery($this->network);
$crudRead->dataset($dataset)->uri($affectedURI)->excludeLinksback()->includeReification()->mime('resultset')->send();
if ($crudRead->isSuccessful()) {
$resultset = $crudRead->getResultset()->getResultset();
// Remove that triple from the record's description
foreach ($resultset[$dataset][$affectedURI] as $property => $values) {
if (is_array($values) && $property != 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type') {
foreach ($values as $key => $value) {
if (isset($value['uri']) && $value['uri'] == $unexistingURI) {
unset($resultset[$dataset][$affectedURI][$property][$key]);
$rset = new Resultset($this->network);
$rset->setResultset($resultset);
// Use the CRUD: Update endpoint to do the modifications. That way we will revision all the changes
// performed by this fix procedure.
$crudUpdate = new CrudUpdateQuery($this->network);
$crudUpdate->dataset($dataset)->createRevision()->isPublished()->document($rset->getResultsetRDFN3())->documentMimeIsRdfN3()->send();
if ($crudUpdate->isSuccessful()) {
cecho(' -> <' . $dataset . '> <' . $affectedURI . '> <' . $property . '> <' . $unexistingURI . "> (fixed)\n", 'LIGHT_BLUE');
if (!isset($this->deletedNTriples[$dataset])) {
$this->deletedNTriples[$dataset] = array();
}
if (!isset($this->deletedNTriples[$dataset][$affectedURI])) {
$this->deletedNTriples[$dataset][$affectedURI] = array();
}
if (!isset($this->deletedNTriples[$dataset][$affectedURI][$property])) {
$this->deletedNTriples[$dataset][$affectedURI][$property] = array();
}
$this->deletedNTriples[$dataset][$affectedURI][$property][] = $unexistingURI;
} else {
cecho("We couldn't update the description of an affected record from the structWSF instance\n", 'YELLOW');
$this->errors[] = array('id' => 'URI-EXISTENCE-53', 'type' => 'warning', '');
}
}
}
}
}
} else {
cecho("We couldn't read the description of an affected record from the structWSF instance\n", 'YELLOW');
$this->errors[] = array('id' => 'URI-EXISTENCE-52', 'type' => 'warning');
}
}
/**
* Export a Dataset from a structWSF instance
*
* @param mixed $uri URI of the dataset to export
* @param mixed $structwsf URL of the structWSF network
* @param mixed $file File where to export the dataset
* @param mixed $mime Mime to use for the exported dataset file
*
* @return Return FALSE if the dataset couldn't be exported. Return TRUE otherwise.
*/
function exportDataset($uri, $structwsf, $file, $mime)
{
// Get the number of records in that dataset
$search = new SearchQuery($structwsf);
$search->includeAggregates()->items(0)->datasetFilter($uri)->send();
if ($search->isSuccessful()) {
$resultset = $search->getResultset()->getResultset();
$nbResults = 0;
$slice = 25;
foreach ($resultset['unspecified'] as $aggr) {
if ($aggr['type'][0] == Namespaces::$aggr . 'Aggregate' && $aggr[Namespaces::$aggr . 'property'][0]['uri'] == Namespaces::$void . 'Dataset' && $aggr[Namespaces::$aggr . 'object'][0]['uri'] == $uri) {
$nbResults = $aggr[Namespaces::$aggr . 'count'][0]['value'];
$prefixes = array();
@unlink($file);
for ($i = 0; $i < $nbResults; $i += $slice) {
cecho('Exporting records ' . $i . ' to ' . ($i + $slice) . "\n", 'CYAN');
$searchExport = new SearchQuery($structwsf);
$searchExport->excludeAggregates()->includeAttribute('uri')->items($slice)->page($i)->datasetFilter($uri)->send();
$uris = array();
$datasets = array();
if ($searchExport->isSuccessful()) {
$resultsetExport = $searchExport->getResultset();
foreach ($resultsetExport->getSubjects() as $subject) {
$uris[] = $subject->getUri();
$d = $subject->getObjectPropertyValues(Namespaces::$dcterms . 'isPartOf');
$datasets[] = $d[0]['uri'];
}
// Get the full description of the records from the CRUD: Read endpoint
$crudRead = new CrudReadQuery($structwsf);
$crudRead->dataset($datasets)->uri($uris)->excludeLinksback()->mime($mime)->send();
if ($crudRead->isSuccessful()) {
$rdf = $crudRead->getResultset();
switch ($mime) {
case 'application/rdf+n3':
$prefixes = array_merge(getN3Prefixes($rdf), $prefixes);
$rdf = n3RemovePrefixes($rdf);
$rdf = n3RemoveIsPartOf($rdf);
file_put_contents($file, $rdf, FILE_APPEND);
break;
case 'application/rdf+xml':
$prefixes = array_merge(getXMLPrefixes($rdf), $prefixes);
$rdf = xmlRemovePrefixes($rdf);
$rdf = xmlRemoveIsPartOf($rdf);
file_put_contents($file, $rdf, FILE_APPEND);
break;
}
} else {
cecho("Error exporting this dataset slice.\n", 'RED');
}
} else {
cecho("Error exporting this dataset slice.\n", 'RED');
}
}
switch ($mime) {
case 'application/rdf+n3':
// Prepend the prefixes to the dataset file.
$tmpFile = md5(microtime());
$first = TRUE;
foreach ($prefixes as $prefix => $uri) {
if ($first) {
exec("echo '@prefix {$prefix}: <{$uri}> .' > /tmp/{$tmpFile}");
$first = FALSE;
} else {
exec("echo '@prefix {$prefix}: <{$uri}> .' >> /tmp/{$tmpFile}");
}
}
exec("echo '\n\n\n' >> /tmp/{$tmpFile}");
exec("cat {$file} >> /tmp/{$tmpFile}");
exec("cp /tmp/{$tmpFile} {$file}");
unlink("/tmp/{$tmpFile}");
break;
case 'application/rdf+xml':
// Prepend the prefixes to the dataset file.
$tmpFile = md5(microtime());
exec("echo '<?xml version=\"1.0\"?>' > /tmp/{$tmpFile}");
exec("echo '<rdf:RDF ' >> /tmp/{$tmpFile}");
foreach ($prefixes as $prefix => $uri) {
exec("echo 'xmlns:{$prefix}=\"{$uri}\"' >> /tmp/{$tmpFile}");
}
exec("echo '>' >> /tmp/{$tmpFile}");
exec("echo '\n\n\n' >> /tmp/{$tmpFile}");
exec("cat {$file} >> /tmp/{$tmpFile}");
exec("cp /tmp/{$tmpFile} {$file}");
unlink("/tmp/{$tmpFile}");
break;
}
}
}
} else {
$debugFile = md5(microtime()) . '.error';
file_put_contents('/tmp/' . $debugFile, var_export($search, TRUE));
@cecho('Can\'t export dataset ' . $uri . '. ' . $search->getStatusMessage() . $search->getStatusMessageDescription() . "\nDebug file: /tmp/{$debugFile}\n", 'RED');
return FALSE;
}
return TRUE;
}
