/**
* 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;
}
/**
* @param $resource
*
* @return BaseResource
*/
public function replaceResourceInstance(BaseResource $resource)
{
/** @var BaseResource $managedInstance */
$managedInstance = $this->retrieveResource($resource->getUri());
if (!$managedInstance) {
return $resource;
}
//getting all triples of new resource
$properties = $resource->properties();
foreach ($properties as $prop) {
$values = $resource->getGraph()->all($resource->getUri(), $prop);
foreach ($values as $value) {
//var_dump($managedInstance) ;
$status = $this->tripleStatus($managedInstance, $prop, $value);
//we have no trace of this triple. We can add it to resource AND snapshot
if ($status === self::STATUS_TRIPLE_UNKNOWN) {
$managedInstance->add($prop, $value);
$this->initialSnapshots->add($resource->getUri(), $prop, $value);
}
}
}
return $managedInstance;
}
