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<?php

    namespace CzProject\SqlGenerator\Statements;

    use CzProject\SqlGenerator\Drivers;
    use CzProject\SqlGenerator\IDriver;
    use CzProject\SqlGenerator\NotImplementedException;
    use CzProject\SqlGenerator\IStatement;


    class RenameTable implements IStatement
    {
        /** @var string */
        private $oldTable;

        /** @var string */
        private $newTable;


        /**
         * @param  string
         * @param  string
         */
        public function __construct($oldTable, $newTable)
        {
            $this->oldTable = $oldTable;
            $this->newTable = $newTable;
        }


        /**
         * @return string
         */
        public function toSql(IDriver $driver)
        {
            if ($driver instanceof Drivers\MysqlDriver) {
                return 'RENAME TABLE ' . $driver->escapeIdentifier($this->oldTable)
                    . ' TO '
                    . $driver->escapeIdentifier($this->newTable)
                    . ';';
            }

            // see http://stackoverflow.com/questions/886786/how-do-i-rename-the-table-name-using-sql-query
            throw new NotImplementedException('Table rename is not implemented for driver ' . get_class($driver) . '.');
        }
    }