/**
* Proceeds to a copy of resource provided as argument and stores it.
*
* @param BaseResource $resource
*
* @return BaseResource
*/
public function takeSnapshot($resource)
{
$res = $this->resource($resource->getUri());
$graph = $resource->getGraph();
foreach ($graph->toRdfPhp() as $resource2 => $properties) {
if ($resource2 !== $res->getUri()) {
continue;
}
if (!$this->unitOfWork->isManagementBlackListed($resource2)) {
foreach ($properties as $property => $values) {
foreach ($values as $value) {
if ($value['type'] === 'bnode' || $value['type'] === 'uri') {
$this->addResource($resource2, $property, $value['value']);
} elseif ($value['type'] === 'literal') {
$this->addLiteral($resource2, $property, Literal::create($value['value'], isset($value['lang']) ? $value['lang'] : null, isset($value['datatype']) ? $value['datatype'] : null));
} else {
}
}
}
}
}
return $res;
}
/** Create a new EasyRdf\Resource or EasyRdf\Literal depending
* on the type of data passed in.
*
* @ignore
*/
protected function newTerm($data)
{
switch ($data['type']) {
case 'bnode':
return new Resource('_:' . $data['value']);
case 'uri':
return new Resource($data['value']);
case 'literal':
case 'typed-literal':
return Literal::create($data);
default:
throw new Exception("Failed to parse SPARQL Query Results format, unknown term type: " . $data['type']);
}
}
