/**
* Returns the correct string version of the object based on the given backend
* This is intended mainly for SQL backends where the identifier is almost always used as foreign key
*
* @param t41_Backend_Uri $backend
* @return string
*/
public function asString(BackendUri $backend = null)
{
if ($backend && $backend->getAlias() == $this->_backendUri->getAlias()) {
return $this->_identifier;
} else {
return $this->__toString();
}
}
/**
* Instanciate a backend from its uri
*
* @param t41_Uri $uri
* @param string $alias alias name
* @param string $mapper mapper name
* @return t41\Backend\Adapter\AbstractAdapter
* @throws t41\Backend\Exception
*/
public static function factory(Backend\BackendUri $uri, $alias = null, $mapper = null)
{
if (!is_null($alias)) {
$uri->setAlias($alias);
}
$parts = explode('_', $uri->getType());
foreach ($parts as $key => $part) {
$parts[$key] = ucfirst(strtolower($part));
}
$backendClass = sprintf('\\t41\\Backend\\Adapter\\%sAdapter', implode('\\', $parts));
try {
$backend = new $backendClass($uri);
$alias = self::addBackend($backend, $alias);
if ($mapper) {
$backend->setMapper(Backend\Mapper::getInstance($mapper));
}
return $backend;
} catch (\Exception $e) {
throw new Backend\Exception('UNKNOWN_CLASS');
}
}
