/**
*
* @return SimpleXmlElement
*/
protected function loadMountpointsFile()
{
try {
if (!is_file($this->filePath)) {
throw new EyeFileNotFoundException($this->filePath);
}
$xmlReader = new XmlStreamReader(new FileInputStream($this->filePath));
$xml = null;
$xmlReader->read($xml);
$xmlReader->close();
return $xml;
} catch (Exception $e) {
throw new EyeIOException('Unable to load mountpoints configuration at ' . $this->filePath . '.', 0, $e);
}
}
/**
* TODO
*
* @param string $id The identifier used to find the right data to read.
* @param array $params Additional params implementation-dependant.
* @return IMetaData
*/
public function retrieveMeta($id, $params = null)
{
$metaDataCacheCell = null;
if (isset(self::$Cache[$this->filePath])) {
$metaDataCacheCell = self::$Cache[$this->filePath];
} else {
$xml = null;
try {
$xmlReader = new XmlStreamReader(new FileInputStream($this->filePath));
$xmlReader->read($xml);
} catch (EyeFileNotFoundException $e) {
// file not found: no big deal, it means there's no metadata so return null
return null;
} catch (Exception $e) {
// other type of exception: it might be a problem, log it
$logger = Logger::getLogger('system.services.Meta.SimpleXMLMetaProvider');
$logger->warn('Error trying to read XML metadata file at ' . $this->filePath);
if ($logger->isDebugEnabled()) {
$logger->debug((string) $e);
}
//close stream
try {
if (is_object($xmlReader)) {
$xmlReader->close();
}
} catch (Exception $e) {
}
return null;
}
//close stream
try {
if (is_object($xmlReader)) {
$xmlReader->close();
}
} catch (Exception $e) {
}
// Create cache cell (simple associative array)
$metaDataCacheCell = array();
foreach ($xml->children() as $key => $value) {
// Ommited keys are not allowed here
if ((string) $value['key'] === '') {
throw new EyeXMLInvalidDocumentException('Missing "key" attribute on node: ' . $value->asXml());
}
if (isset($value['type']) && $value['type'] == 'array') {
$metaDataCacheCell[(string) $value['key']] = $this->readArray($value);
} else {
$metaDataCacheCell[(string) $value['key']] = (string) $value;
}
}
}
$metaDataClass = $this->metaDataClass;
$metaData = new $metaDataClass();
$metaData->setAll($metaDataCacheCell);
return $metaData;
}
