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<?php |
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namespace ByJG\RestServer; |
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use ByJG\AnyDataset\Model\ObjectHandler; |
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use ByJG\Util\XmlUtil; |
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class ServiceHandler implements HandlerInterface |
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{ |
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protected $output = Output::JSON; |
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public function getOutput() |
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{ |
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return $this->output; |
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} |
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public function setOutput($output) |
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{ |
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// Check if output is set |
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if ($output != Output::JSON && $output != Output::XML && $output != Output::CSV && $output != Output::RDF) { |
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throw new \Exception('Invalid output format. Valid are XML, JSON or CSV'); |
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} |
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$this->output = $output; |
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} |
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public function setHeader() |
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{ |
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switch ($this->getOutput()) { |
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case Output::JSON: |
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header('Content-Type: application/json'); |
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break; |
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case Output::RDF: |
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header('Content-Type: application/rdf+xml'); |
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break; |
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case Output::XML: |
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header('Content-Type: text/xml'); |
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break; |
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default: |
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header('Content-Type: text/plain'); |
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break; |
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} |
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} |
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/** |
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* CORS - Better do that in your http server, but you can enable calling this |
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*/ |
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public function setHeaderCors() |
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{ |
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header('Access-Control-Allow-Origin: *'); |
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header("Access-Control-Allow-Headers: X-API-KEY, Origin, X-Requested-With, Content-Type, Accept, Access-Control-Request-Method"); |
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header("Access-Control-Allow-Methods: GET, POST, OPTIONS, PUT, DELETE"); |
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$method = $_SERVER['REQUEST_METHOD']; |
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if ($method == "OPTIONS") { |
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return false; |
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} |
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return true; |
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} |
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public function execute(ServiceAbstract $instance) |
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{ |
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$root = null; |
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$annotationPrefix = 'object'; |
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if ($this->getOutput() == Output::RDF) { |
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$xmlDoc = XmlUtil::CreateXmlDocument(); |
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$root = XmlUtil::CreateChild($xmlDoc, "rdf:RDF", "", "http://www.w3.org/1999/02/22-rdf-syntax-ns#"); |
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XmlUtil::AddNamespaceToDocument($root, "rdfs", "http://www.w3.org/2000/01/rdf-schema#"); |
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$annotationPrefix = 'rdf'; |
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} |
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$dom = $instance->getResponse()->getResponseBag()->process($root, $annotationPrefix); |
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switch ($this->getOutput()) { |
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case Output::JSON: |
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return ObjectHandler::xml2json($dom); |
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case Output::XML: |
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case Output::RDF: |
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return $dom->saveXML(); |
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case Output::CSV: |
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$array = XmlUtil::xml2Array($dom); |
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$return = ""; |
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foreach ((array) $array as $line) { |
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foreach ((array) $line as $field) { |
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$return .= "\"" . str_replace('"', '\\"', (is_array($field) ? json_encode($field) : $field)) . "\";"; |
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} |
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$return .= "\n"; |
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} |
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return $return; |
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} |
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} |
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} |
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Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: