eZ\Publish\Core\FieldType\MapLocation\MapLocationStorage\Gateway\LegacyStorage::loadFieldData PHP Method

    protected function loadFieldData($fieldId, $versionNo)
    {
        $connection = $this->getConnection();
        $selectQuery = $connection->createSelectQuery();
        $selectQuery->select($connection->quoteColumn('latitude'), $connection->quoteColumn('longitude'), $connection->quoteColumn('address'))->from($connection->quoteTable('ezgmaplocation'))->where($selectQuery->expr->lAnd($selectQuery->expr->eq($connection->quoteColumn('contentobject_attribute_id'), $selectQuery->bindValue($fieldId, null, \PDO::PARAM_INT)), $selectQuery->expr->eq($connection->quoteColumn('contentobject_version'), $selectQuery->bindValue($versionNo, null, \PDO::PARAM_INT))));
        $statement = $selectQuery->prepare();
        $statement->execute();
        $rows = $statement->fetchAll(\PDO::FETCH_ASSOC);
        if (!isset($rows[0])) {
            return null;
        }
        // Cast coordinates as the DB can return them as strings
        $rows[0]['latitude'] = (double) $rows[0]['latitude'];
        $rows[0]['longitude'] = (double) $rows[0]['longitude'];
        return $rows[0];
    }