PHP EasyRdf_Format::getHttpAcceptHeader方法代码示例

 /**
  * Load RDF data into the graph.
  *
  * If a URI is supplied, but no data then the data will
  * be fetched from the URI.
  *
  * The document type is optional and can be specified if it
  * can't be guessed or got from the HTTP headers.
  *
  * @param  string  $uri     The URI of the graph
  * @param  string  $data    Data for the graph
  * @param  string  $format  The document type of the data
  */
 public function load($uri, $data = null, $format = null)
 {
     if (!is_string($uri) or $uri == null or $uri == '') {
         throw new InvalidArgumentException("\$uri should be a string and cannot be null or empty");
     }
     if (!$data) {
         # No data was given - try and fetch data from URI
         # FIXME: prevent loading the same URI multiple times
         $client = self::getHttpClient();
         $client->setUri($uri);
         $client->setHeaders('Accept', EasyRdf_Format::getHttpAcceptHeader());
         $response = $client->request();
         if (!$response->isSuccessful()) {
             throw new EasyRdf_Exception("HTTP request for {$uri} failed: " . $response->getMessage());
         }
         $data = $response->getBody();
         if (!$format) {
             $format = $response->getHeader('Content-Type');
             $format = preg_replace('/;(.+)$/', '', $format);
         }
     }
     # Guess the format if it is Unknown
     if (!$format) {
         $format = EasyRdf_Format::guessFormat($data);
     }
     if (!$format) {
         throw new EasyRdf_Exception("Unable to load data of an unknown format.");
     }
     # Parse the data
     $format = EasyRdf_Format::getFormat($format);
     $parser = $format->newParser();
     return $parser->parse($this, $data, $format, $uri);
 }

 /** Make a query to the SPARQL endpoint
  *
  * SELECT and ASK queries will return an object of type
  * EasyRdf_Sparql_Result.
  *
  * CONSTRUCT and DESCRIBE queries will return an object
  * of type EasyRdf_Graph.
  *
  * @param string $query The query string to be executed
  * @return object EasyRdf_Sparql_Result|EasyRdf_Graph Result of the query.
  */
 public function query($query)
 {
     # Add namespaces to the queryString
     $prefixes = '';
     foreach (EasyRdf_Namespace::namespaces() as $prefix => $uri) {
         if (strpos($query, "{$prefix}:") !== false and strpos($query, "PREFIX {$prefix}:") === false) {
             $prefixes .= "PREFIX {$prefix}: <{$uri}>\n";
         }
     }
     $client = EasyRdf_Http::getDefaultHttpClient();
     $client->resetParameters();
     $client->setUri($this->_uri);
     $client->setMethod('GET');
     $accept = EasyRdf_Format::getHttpAcceptHeader(array('application/sparql-results+json' => 1.0, 'application/sparql-results+xml' => 0.8));
     $client->setHeaders('Accept', $accept);
     $client->setParameterGet('query', $prefixes . $query);
     $response = $client->request();
     if ($response->isSuccessful()) {
         $type = $response->getHeader('Content-Type');
         if (strpos($type, 'application/sparql-results') === 0) {
             return new EasyRdf_Sparql_Result($response->getBody(), $type);
         } else {
             return new EasyRdf_Graph($this->_uri, $response->getBody(), $type);
         }
     } else {
         throw new EasyRdf_Exception("HTTP request for SPARQL query failed: " . $response->getBody());
     }
 }

 /**
  * Load RDF data into the graph.
  *
  * If a URI is supplied, but no data then the data will
  * be fetched from the URI.
  *
  * The document type is optional and can be specified if it
  * can't be guessed or got from the HTTP headers.
  *
  * @param  string  $uri     The URI of the data to load
  * @param  string  $data    Optional data for the graph
  * @param  string  $format  Optional format of the data
  */
 public function load($uri = null, $data = null, $format = null)
 {
     $this->checkResourceParam($uri, true);
     if (!$uri) {
         throw new EasyRdf_Exception("No URI given to load() and the graph does not have a URI.");
     }
     if (!$data) {
         # No data was given - try and fetch data from URI
         # FIXME: prevent loading the same URI multiple times
         $client = EasyRdf_Http::getDefaultHttpClient();
         $client->resetParameters(true);
         $client->setUri($uri);
         $client->setMethod('GET');
         $client->setHeaders('Accept', EasyRdf_Format::getHttpAcceptHeader());
         $response = $client->request();
         if (!$response->isSuccessful()) {
             throw new EasyRdf_Exception("HTTP request for {$uri} failed: " . $response->getMessage());
         }
         $data = $response->getBody();
         if (!$format) {
             $format = $response->getHeader('Content-Type');
             $format = preg_replace('/;(.+)$/', '', $format);
         }
     }
     // Parse the data
     return $this->parse($data, $format, $uri);
 }

 /**
  * Load RDF data into the graph from a URI.
  *
  * If no URI is given, then the URI of the graph will be used.
  *
  * The document type is optional but should be specified if it
  * can't be guessed or got from the HTTP headers.
  *
  * @param  string  $uri     The URI of the data to load
  * @param  string  $format  Optional format of the data (eg. rdfxml)
  * @return integer          The number of triples added to the graph
  */
 public function load($uri = null, $format = null)
 {
     $this->checkResourceParam($uri, true);
     if (!$uri) {
         throw new EasyRdf_Exception("No URI given to load() and the graph does not have a URI.");
     }
     // Setup the HTTP client
     $client = EasyRdf_Http::getDefaultHttpClient();
     $client->resetParameters(true);
     $client->setConfig(array('maxredirects' => 0));
     $client->setMethod('GET');
     $client->setHeaders('Accept', EasyRdf_Format::getHttpAcceptHeader());
     $requestUrl = $uri;
     $response = null;
     $redirectCounter = 0;
     do {
         // Have we already loaded it into the graph?
         $requestUrl = EasyRdf_Utils::removeFragmentFromUri($requestUrl);
         if (in_array($requestUrl, $this->loaded)) {
             return 0;
         }
         // Make the HTTP request
         $client->setHeaders('host', null);
         $client->setUri($requestUrl);
         $response = $client->request();
         // Add the URL to the list of URLs loaded
         $this->loaded[] = $requestUrl;
         if ($response->isRedirect() and $location = $response->getHeader('location')) {
             // Avoid problems with buggy servers that add whitespace
             $location = trim($location);
             // Some servers return relative URLs in the location header
             // resolve it in relation to previous request
             $baseUri = new EasyRdf_ParsedUri($requestUrl);
             $requestUrl = $baseUri->resolve($location)->toString();
             $requestUrl = EasyRdf_Utils::removeFragmentFromUri($requestUrl);
             // If it is a 303 then drop the parameters
             if ($response->getStatus() == 303) {
                 $client->resetParameters();
             }
             ++$redirectCounter;
         } elseif ($response->isSuccessful()) {
             // If we didn't get any location, stop redirecting
             break;
         } else {
             throw new EasyRdf_Http_Exception("HTTP request for {$requestUrl} failed: " . $response->getMessage(), $response->getStatus(), null, $response->getBody());
         }
     } while ($redirectCounter < $this->maxRedirects);
     if (!$format or $format == 'guess') {
         list($format, $params) = EasyRdf_Utils::parseMimeType($response->getHeader('Content-Type'));
     }
     // Parse the data
     return $this->parse($response->getBody(), $format, $uri);
 }

 public function testGetHttpAcceptHeader()
 {
     $accept = explode(',', EasyRdf_Format::getHttpAcceptHeader());
     $this->assertContains('application/json', $accept);
 }

 public function testGetHttpAcceptHeaderWithExtra()
 {
     $accept = EasyRdf_Format::getHttpAcceptHeader(array('extra/header' => 0.5));
     $this->assertContains('application/json', $accept);
     $this->assertContains('extra/header;q=0.5', $accept);
 }

 protected function request($type, $query)
 {
     // Check for undefined prefixes
     $prefixes = '';
     foreach (EasyRdf_Namespace::namespaces() as $prefix => $uri) {
         if (strpos($query, "{$prefix}:") !== false and strpos($query, "PREFIX {$prefix}:") === false) {
             $prefixes .= "PREFIX {$prefix}: <{$uri}>\n";
         }
     }
     $client = EasyRdf_Http::getDefaultHttpClient();
     $client->resetParameters();
     // Tell the server which response formats we can parse
     $accept = EasyRdf_Format::getHttpAcceptHeader(array('application/sparql-results+json' => 1.0, 'application/sparql-results+xml' => 0.8));
     $client->setHeaders('Accept', $accept);
     if ($type == 'update') {
         $client->setMethod('POST');
         $client->setUri($this->updateUri);
         $client->setRawData($prefixes . $query);
         $client->setHeaders('Content-Type', 'application/sparql-update');
     } elseif ($type == 'query') {
         // Use GET if the query is less than 2kB
         // 2046 = 2kB minus 1 for '?' and 1 for NULL-terminated string on server
         $encodedQuery = 'query=' . urlencode($prefixes . $query);
         if (strlen($encodedQuery) + strlen($this->queryUri) <= 2046) {
             $delimiter = $this->queryUri_has_params ? '&' : '?';
             $client->setMethod('GET');
             $client->setUri($this->queryUri . $delimiter . $encodedQuery);
         } else {
             // Fall back to POST instead (which is un-cacheable)
             $client->setMethod('POST');
             $client->setUri($this->queryUri);
             $client->setRawData($encodedQuery);
             $client->setHeaders('Content-Type', 'application/x-www-form-urlencoded');
         }
     }
     $response = $client->request();
     if ($response->getStatus() == 204) {
         // No content
         return $response;
     } elseif ($response->isSuccessful()) {
         list($type, $params) = EasyRdf_Utils::parseMimeType($response->getHeader('Content-Type'));
         if (strpos($type, 'application/sparql-results') === 0) {
             return new EasyRdf_Sparql_Result($response->getBody(), $type);
         } else {
             return new EasyRdf_Graph($this->queryUri, $response->getBody(), $type);
         }
     } else {
         throw new EasyRdf_Exception("HTTP request for SPARQL query failed: " . $response->getBody());
     }
 }

 public function testGetHttpAcceptHeaderLocale()
 {
     $current_locale = setlocale(LC_NUMERIC, 0);
     setlocale(LC_NUMERIC, 'fi_FI.UTF-8');
     $accept = EasyRdf_Format::getHttpAcceptHeader(array('extra/header' => 0.5));
     $this->assertContains('extra/header;q=0.5', $accept);
     setlocale(LC_NUMERIC, $current_locale);
 }