/**
* Class constructor.
*
* @param string $plugin_name Name of the plguin.
* @throws \InvalidArgumentException If the plugin name isn't correct.
* @throws \RuntimeException If the plugin does not exist.
*/
public function __construct($plugin_name)
{
if (!Utils::isValidPluginName($plugin_name)) {
throw new \InvalidArgumentException('Wrong plugin name');
}
if (!Utils::pluginExists($plugin_name)) {
throw new \RuntimeException('Plugin is not found');
}
$this->pluginName = $plugin_name;
}
/**
* Loads state by plugin's name.
*
* @param string $name Name of the plugin which state should be loaded.
* @return State|boolean An instance of state or boolean false on failure.
*/
public static function loadByName($name)
{
if (!Utils::isValidPluginName($name)) {
return false;
}
// Load plugin state
$info = Database::getInstance()->query('SELECT * FROM {plugin} WHERE name = :name', array(':name' => $name), array('return_rows' => Database::RETURN_ONE_ROW));
// There is no such record in database
if (!$info) {
return false;
}
// Create and populate object
$state = new self();
$state->populateFromDbFields($info);
return $state;
}