/**
     * Export entity to array
     * @param boolean $deep True to load relation in the array;
     * @return array
     */
    public function toArray($deep = false) {
        $array = array();
        foreach ($this->getSchema() as $propertyName => $detail) {
            if ($detail['mode'] == self::PROPERTY_SCALAR_MODE && !$deep) {
                $array[$propertyName] = $this->get($propertyName);
            } elseif ($detail['mode'] != self::PROPERTY_SCALAR_MODE && $deep == true) {
                $object = $this->get($propertyName);
                if ($object != null) {
                    $array[$propertyName] = $this->get($propertyName)->toArray();
                } else {
                    $array[$propertyName] = null;
                }
            }
            $array['id'] = $this->get('id');
        }

        return $array;
    }