/**
* {@inheritdoc}
*/
protected function doSave($id, EntityInterface $entity)
{
$bundle = $entity->bundle();
// Generate an ID before saving, if none is available. If the ID generation
// occurs earlier in the process (like on EntityInterface::create()), the
// entity might be considered not new by modules that don't strictly use the
// EntityInterface::isNew() method.
if (empty($id)) {
$id = $this->generateId();
$entity->{$this->idKey} = (string) $id;
}
// If the target graph is set, it has priority over the one the entity is
// loaded from. If no target graph is set, use the previous one.
$target_graph = $this->getGraphHandler()->getTargetGraphFromEntity($entity);
$graph_uri = $this->getBundleGraphUri($bundle, $target_graph);
$insert = '';
$properties = $this->mappingHandler->getEntityTypeMappedProperties($entity);
$subj = '<' . (string) $id . '>';
$properties_list = "<" . implode(">, <", $properties['flat']) . ">";
foreach ($entity->toArray() as $field_name => $field) {
foreach ($field as $field_item) {
foreach ($field_item as $column => $value) {
if (!isset($properties['by_field'][$field_name][$column])) {
continue;
}
$pred = '<' . (string) $properties['by_field'][$field_name][$column] . '>';
if (!filter_var($value, FILTER_VALIDATE_URL) === FALSE) {
$obj = '<' . $value . '>';
} else {
// @todo This is most probably prone to Sparql injection..!
$obj = '"""' . $value . '"""';
}
$insert .= $subj . ' ' . $pred . ' ' . $obj . ' .' . "\n";
}
}
}
// Save the bundle.
$rdf_bundle_mapping = $this->mappingHandler->getRdfBundleMappedUri($entity->getEntityType()->getBundleEntityType(), $entity->bundle());
$rdf_bundle = $rdf_bundle_mapping[$entity->bundle()];
$insert .= $subj . ' ' . $this->rdfBundlePredicate . ' <' . $rdf_bundle . '> .' . "\n";
$query = <<<QUERY
DELETE {
GRAPH <{$graph_uri}> {
<{$id}> ?field ?value
}
}
WHERE {
GRAPH <{$graph_uri}> {
<{$id}> ?field ?value .
FILTER (?field IN ({$properties_list}))
}
}
QUERY;
if (!$entity->isNew()) {
$this->sparql->query($query);
}
// @todo Do in one transaction... If possible.
$query = "INSERT DATA INTO <{$graph_uri}> {\n" . $insert . "\n" . '}';
$this->sparql->query($query);
}
