public function testParseJson()
{
$json = '{
"http://example.com/resource/r1" : {
"http://example.com/resource/p1" : [ {
"value" : "Test Data",
"type" : "literal",
"graphs" : [ "http://pre.ximdex.net:8080/marmotta/context/default" ]
} ]
}
}';
$uri = "http://example.com/resource/r1";
$obj = RdfJson::decode_metadata($uri, $json);
$this->assertCount(1, $obj);
}
/**
* Convert an RDF/JSON string into the MarmottaClient metadata representation. Returns an array of the form
*
* array(
* "http://xmlns.com/foaf/0.1/name" => array(new Literal("Sepp Huber"))
* )
*
* @param $rdfjson_string
*/
public static function decode_metadata($uri, $rdfjson_string)
{
$result = array();
$json_array = json_decode($rdfjson_string, true);
foreach ($json_array as $subject => $properties) {
if ($uri == $subject) {
foreach ($properties as $property => $objects) {
$result[$property] = array();
foreach ($objects as $object) {
$result[$property][] = RdfJson::decode_node($object);
}
}
}
}
return $result;
}
/**
* Return the metadata of the resource identified by the URI passed as argument. In PHP, the returned
* object is an array mapping from property URIs to arrays of RDFNodes, representing the values of this
* property.
* <p/>
* Example:
*
* array(
* "http://xmlns.com/foaf/0.1/name" => array(new Literal("Sepp Huber"))
* )
*
* @param $uri
* @return array
*/
public function getResourceMetadata($uri)
{
try {
$client = new Client();
$request = $client->get($this->getServiceUrl($uri), array("User-Agent" => "Marmotta Client Library (PHP)", "Accept" => "application/rdf+json; rel=meta"));
// set authentication if given in configuration
if (!empty($this->config->getUsername())) {
$request->setAuth($this->config->getUsername(), $this->config->getPassword());
}
$response = $request->send();
return RdfJson::decode_metadata($uri, $response->getBody(true));
} catch (BadResponseException $ex) {
if ($ex->getResponse()->getStatusCode() == 404) {
throw new NotFoundException("could not retrieve resource metadata for resource {$uri}; it does not exist");
} else {
if ($ex->getResponse()->getStatusCode() == 406) {
throw new ContentFormatException("server does not offer metadata type application/json for resource {$uri}");
} else {
throw new MarmottaClientException("could not retrieve resource metadata for resource {$uri}; " . $ex->getResponse()->getReasonPhrase());
}
}
}
}
