public function searchMeta($id, IMetaData $metaData)
{
try {
// setting up className...
$className = explode('_', $id);
$className = $className[1];
// retrieving all setted MetaDatas from $metaData object...
$metaDatas = $metaData->getAll();
// if just one meta is setted, we search for a single meta in the database...
if (count($metaDatas) == 1) {
$result = $this->searchSingleMeta($className, key($metaDatas), current($metaDatas));
} else {
$result = $this->searchMultipleMetas($className, $metaDatas);
}
// the search returns empty values, we return null and quit the function...
if ($result === false) {
return null;
}
// else we prepare the array $return, and we fill it with object's ids.
$return = array();
foreach ($result as $value) {
$return[] = $value[self::METADATA_FIELD_ID];
}
} catch (Exception $e) {
throw new EyeDBException('An error occured while trying to retrieve metadata from database.', 0, $e);
}
return $return;
}
/**
* TODO
*
* @param string $id The identifier used to be able to retrieve data to be written afterwards.
* @param IMetaData The metadata to be written.
* @param array $params Additional params implementation-dependant.
*/
public function storeMeta($id, IMetaData $metaData, $params = null)
{
$xml = new SimpleXMLElement('<meta/>');
$metaDatas = $metaData->getAll();
foreach ($metaDatas as $key => $value) {
if (is_array($value)) {
$node = $xml->addChild('entry');
$node->addAttribute('key', $key);
$node->addAttribute('type', 'array');
$this->writeArray($node, $value);
} else {
if (is_bool($value)) {
$node = $xml->addChild('entry', $value ? 'true' : 'false');
$node->addAttribute('key', $key);
} else {
$node = $xml->addChild('entry', $value);
$node->addAttribute('key', $key);
}
}
}
try {
$xmlWriter = new XmlStreamWriter(new FileOutputStream($this->filePath), array(XmlStreamWriter::PARAM_FORMATOUTPUT => $this->formatOutput));
$xmlWriter->write($xml);
} catch (Exception $e) {
//close stream
try {
if (is_object($xmlWriter)) {
$xmlWriter->close();
}
} catch (Exception $e) {
}
throw new EyeIOException('Unable to write meta file at ' . $this->filePath . '.', 0, $e);
}
//close stream
try {
if (is_object($xmlWriter)) {
$xmlWriter->close();
}
} catch (Exception $e) {
}
//Update cache
self::$Cache[$this->filePath] = $metaData->getAll();
}
/**
* Constructs a new IMetadata by copying the values stored in the given parameter if any,
* or an empty one otherwise.
*
* @param IMetaData $metaData
*/
public function __construct(IMetaData $metaData = null)
{
if ($metaData !== null) {
$this->setAll($metaData->getAll());
}
}
