izzum\statemachine\persistence\PDO::processGetState PHP Метод

    public function processGetState(Identifier $identifier)
    {
        $connection = $this->getConnection();
        $prefix = $this->getPrefix();
        try {
            $query = 'SELECT state FROM ' . $prefix . 'statemachine_entities WHERE machine = ' . ':machine AND entity_id = :entity_id';
            $machine = $identifier->getMachine();
            $entity_id = $identifier->getEntityId();
            $statement = $connection->prepare($query);
            $statement->bindParam(":machine", $machine);
            $statement->bindParam(":entity_id", $entity_id);
            $result = $statement->execute();
            if ($result === false) {
                throw new Exception($this->getErrorInfo($statement));
            }
        } catch (\Exception $e) {
            throw new Exception(sprintf('query for getting current state failed: [%s]', $e->getMessage()), Exception::PERSISTENCE_LAYER_EXCEPTION);
        }
        $row = $statement->fetch();
        if ($row === false) {
            throw new Exception(sprintf('no state found for [%s]. Did you "$machine->add()" it to the persistence layer?', $identifier->toString()), Exception::PERSISTENCE_LAYER_EXCEPTION);
            return State::STATE_UNKNOWN;
        }
        return $row['state'];
    }