public Object decorate(Object columnValue,
    PageContext pageContext,
    MediaTypeEnum media) 
{
 //$NON-NLS-1$ //$NON-NLS-1$ //$NON-NLS-1$
        if (columnValue == null)
        {
            return null;
        }
        String work = columnValue.toString();
        int urlBegin;
        StringBuffer buffer = new StringBuffer();
        // First check for email addresses.
        while ((urlBegin = work.indexOf('@")) != -1)
        {
            int start = 0;
            int end = work.length() - 1;
            // scan backwards...
            for (int j = urlBegin; j  >= 0; j--)
            {
                if (Character.isWhitespace(work.charAt(j)))
                {
                    start = j + 1;
                    break;
                }
            }
            // scan forwards...
            for (int j = urlBegin; j < = end; j++)
            {
                if (Character.isWhitespace(work.charAt(j)))
                {
                    end = j - 1;
                    break;
                }
            }
            String email = work.substring(start, end + 1);
            buffer.append(work.substring(0, start)).append("< a href=\"mailto:") //$NON-NLS-1$
                .append(email + "\" >") //$NON-NLS-1$
                .append(email).append("< /a >"); //$NON-NLS-1$
            if (end == work.length())
            {
                work = TagConstants.EMPTY_STRING;
            }
            else
            {
                work = work.substring(end + 1);
            }
        }
        work = buffer.toString() + work;
        buffer = new StringBuffer();
        // Now check for urls...
        while ((urlBegin = work.indexOf(URL_DELIM)) != -1)
        {
            // scan backwards...
            int fullUrlBegin = urlBegin;
            StringBuffer prefixBuffer = new StringBuffer(10);
            for (int j = fullUrlBegin - 1; j  >= 0; j--)
            {
                if (Character.isWhitespace(work.charAt(j)))
                {
                    fullUrlBegin = j + 1;
                    break;
                }
                fullUrlBegin = j;
                prefixBuffer.append(work.charAt(j));
            }
            if (!ArrayUtils.contains(URLS_PREFIXES, StringUtils.reverse(prefixBuffer.toString())))
            {
                buffer.append(work.substring(0, urlBegin + 3));
                work = work.substring(urlBegin + 3);
                continue;
            }
            int urlEnd = work.length();
            // scan forwards...
            for (int j = urlBegin; j <  urlEnd; j++)
            {
                if (Character.isWhitespace(work.charAt(j)))
                {
                    urlEnd = j;
                    break;
                }
            }
            String url = work.substring(fullUrlBegin, urlEnd);
            buffer.append(work.substring(0, fullUrlBegin)).append("< a href=\"")//$NON-NLS-1$
                .append(url).append("\" >")//$NON-NLS-1$
                .append(url).append("< /a >"); //$NON-NLS-1$
            if (urlEnd  >= work.length())
            {
                work = TagConstants.EMPTY_STRING;
            }
            else
            {
                work = work.substring(urlEnd);
            }
        }
        buffer.append(work);
        return buffer.toString();
}