public static function factory($namespace, $forceCreate = false)
{
// Singletons
static $instances;
if (isset($instances[$namespace])) {
return $instances[$namespace];
}
// Check if mongo collection exists
$name = self::NAMESPACE_PREFIX . $namespace;
if (!$forceCreate && !self::hasCollection($name)) {
throw new NotFoundException("Missing namespace {$namespace} at db");
}
// Create a mongo collection instance
$instance = new self();
$instance->setCollectionName($name);
// Store it for future
$instances[$namespace] = $instance;
return $instance;
}
