'service.semanticproxy.com', 'format' => 'rdf', ); public $parameters; public $rdf; public $triples = array(); public $flatTriples = array(); public $keywords = array(); /** * Constructs an instance of the Calais facade. * * Valid parameters are specified in the options array as key/value pairs with the * parameter name being the key and the parameter setting being the value * e.g. array('allowSearch' => 'false') * * @param options * An array of parameter options for the Semantic Proxy Web Service. These will override the defaults. *

*

host

*

The server name for the SemanticProxy service (default: service.semanticproxy.com)

*

format

*

The return data format for the SemanticProxy service (default: rdf)

*

* */ function __construct($options = array()) { $this->parameters = array_merge($this->defaults, $options); } /** * Analyze the url via SemanticProxy/Calais * * @param $url * The url to send to SemanticProxy for analysis * @return * The processed Calais results. The raw RDF result is contained in the $this->rdf field. */ public function analyze($url) { if (!valid_url($url, TRUE)) { self::log_url_error($url); return array(); } $data = array( '@apikey' => variable_get('calais_api_key', NULL), '@host' => $this->parameters['host'], '@format' => $this->parameters['format'], '@url' => $url, ); $uri = strtr(self::SERVICE, $data); $ret = drupal_http_request($uri); if (isset($ret->error)) { self::log_http_error($ret); return array(); } if($this->parameters['format'] == 'rdf') { $this->rdf = $ret->data; $this->processor = new CalaisRdfProcessor(); $this->keywords = $this->processor->parse_rdf($this->rdf); $this->triples = $this->processor->triples; $this->flatTriples = $this->processor->flatTriples; } return $this->keywords; } private static function log_url_error($url) { $msg = t('URL for SemanticProxy is invalid: @url', array('@url' => $url)); drupal_set_message($msg, 'error'); watchdog('calais', $msg, array(), WATCHDOG_ERROR); } private static function log_http_error($ret) { $errordoc = @simplexml_load_string($ret->data); if (method_exists($errordoc, 'xpath')) { $exception = $errordoc->xpath('/Error/Exception'); $errormsg = (string) $exception[0]; $msg = t('SemanticProxy processing error: @msg', array('@msg' => $errormsg)); drupal_set_message($msg, 'error'); $errors = array('@code' => $ret->code, '@error' => $ret->error, '@msg' => $errormsg); watchdog('calais', 'SemanticProxy processing error: (@code - @error) @msg', $errors, WATCHDOG_ERROR); } else { $msg = t('Unexpected error processing SemanticProxy request.'); drupal_set_message($msg, 'error'); watchdog('calais', $msg, WATCHDOG_ERROR); } } }