protected function open()
{
$this->graph = new Graph();
$rdfa_parser = new RdfaParser();
$json_parser = new JsonLd();
\EasyRdf\RdfNamespace::set('dcat', 'http://www.w3.org/ns/dcat#');
\EasyRdf\RdfNamespace::set('lbld', 'http://decisions.data.vlaanderen.be/ns#');
$data = file_get_contents($this->extractor->uri);
// Assume we have an rdfa document to begin with
$rdfa_parser->parse($this->graph, $data, 'rdfa', $this->extractor->base_uri);
// Check if we have properties we need to include into the current graph
$properties = explode(',', $this->extractor->follow_properties);
foreach ($this->graph->resources() as $resource) {
foreach ($properties as $property) {
$resolve_resources = $resource->allResources($property);
if (!empty($resolve_resources)) {
foreach ($resolve_resources as $resolve_resource) {
$data = file_get_contents($resolve_resource->getUri());
// Parse any rdfa data in the document into the existing graph
$this->graph->parse($data, 'rdfa', $resolve_resource->getUri());
$json = $this->parseJsonldSnippet($data);
if (!empty($json)) {
try {
$this->graph->parse($json, 'jsonld', $resolve_resource->getUri());
} catch (\Exception $ex) {
\Log::error("We could not parse json from the data, the data was:" . $json);
}
}
}
}
}
}
// We only return the graph once as a full datastructure
$this->has_next = true;
}
protected function open()
{
$this->graph = new Graph();
$parser = new RdfaParser();
$data = file_get_contents($this->extractor->uri);
$parser->parse($this->graph, $data, 'rdfa', $this->extractor->base_uri);
// We only return the graph once as a full datastructure
$this->has_next = true;
}