/**
* Serializes a given model or (if supported) all models into a given format.
*/
public function exportAction()
{
if (!$this->_owApp->erfurt->getAc()->isActionAllowed(Erfurt_Ac_Default::ACTION_MODEL_EXPORT)) {
$this->_owApp->appendMessage(new OntoWiki_Message('Model export not allowed.', OntoWiki_Message::ERROR));
$this->_redirect($_SERVER['HTTP_REFERER'], array('code' => 302));
return;
}
// Check whether the f parameter is given. If not: default to rdf/xml
if (!isset($this->_request->f)) {
$format = 'rdfxml';
} else {
$format = $this->_request->f;
}
$format = Erfurt_Syntax_RdfSerializer::normalizeFormat($format);
$store = $this->_erfurt->getStore();
// Check whether given format is supported. If not: 400 Bad Request.
if (!in_array($format, array_keys(Erfurt_Syntax_RdfSerializer::getSupportedFormats()))) {
$response = $this->getResponse();
$response->setRawHeader('HTTP/1.0 400 Bad Request');
throw new OntoWiki_Controller_Exception("Format '{$format}' not supported.");
}
// Check whether a model uri is given
if (isset($this->_request->m)) {
$modelUri = $this->_request->m;
// Check whether model exists. If not: 404 Not Found.
if (!$store->isModelAvailable($modelUri, false)) {
$response = $this->getResponse();
$response->setRawHeader('HTTP/1.0 404 Not Found');
throw new OntoWiki_Controller_Exception("Model '{$modelUri}' not found.");
}
// Check whether model is available (with acl). If not: 403 Forbidden.
if (!$store->isModelAvailable($modelUri)) {
$response = $this->getResponse();
$response->setRawHeader('HTTP/1.0 403 Forbidden');
throw new OntoWiki_Controller_Exception("Model '{$modelUri}' not available.");
}
$filename = 'export' . date('Y-m-d_Hi');
$description = Erfurt_Syntax_RdfSerializer::getFormatDescription($format);
$contentType = $description['contentType'];
$filename .= $description['fileExtension'];
$this->_helper->viewRenderer->setNoRender();
$this->_helper->layout->disableLayout();
$response = $this->getResponse();
$response->setHeader('Content-Type', $contentType, true);
$response->setHeader('Content-Disposition', 'filename="' . $filename . '"');
$serializer = Erfurt_Syntax_RdfSerializer::rdfSerializerWithFormat($format);
echo $serializer->serializeGraphToString($modelUri);
return;
} else {
// Else use all available models.
// TODO Exporters need to support this feature...
$response = $this->getResponse();
$response->setRawHeader('HTTP/1.0 400 Bad Request');
throw new OntoWiki_Controller_Exception("No Graph URI given.");
}
}
