// path was already absolute, just normalize file separator and we're done
            s = file.getPath();
        } else if (file.getPath().startsWith(File.separator)) {
            // drive-relative Windows path, don't align with project directory but with drive root
            s = file.getAbsolutePath();
        } else {
            // an ordinary relative path, align with project directory

            if (path.isAbsolute()) {
                // path is already absolute, we're done
            } else if (path.getPath().startsWith(File.separator)) {
                // drive-relative Windows path, don't align with base dir but with drive root
                result = path.getAbsoluteFile();
            } else {
                // an ordinary relative path, align with base dir

                result = file.getPath();
            } else if (file.getPath().startsWith(File.separator)) {
                // drive-relative Windows path, don't align with project directory but with drive root
                result = file.getAbsolutePath();
            } else {
                // an ordinary relative path, align with project directory

    }

    /**
     * JDBCドライバを登録します。
     *
     * @param driver
     *            登録するJDBCドライバ。{@literal null}であってはいけません
     */
    public static void registerDriver(final Driver driver) {
        assertArgumentNotNull("driver", driver);

        try {
            DriverManager.registerDriver(driver);
        } catch (final SQLException e) {
            throw new SQLRuntimeException(e);
        }