xml - Concatenate multiple attributes in one with XSL -

i have input xml looks following.

<?xml version="1.0" encoding="utf-8"?> <topic title="my topic" subtopic="my subtopic">     <table title="my table" media="print" role="center">         <thead></thead>         <tbody></tbody>     </table> </topic> 

i want translated xsl following.

<?xml version="1.0" encoding="utf-8"?> <topic title="my topic" subtitle="my subtopic">     <table title="my table" outputclass="print center">         <thead></thead>         <tbody></tbody>     </table> </topic> 

if notice other attribute of table must concatenated in 1 attribute named outputclass other attribute of table not of topic.

i have xsl -

<?xml version="1.0" ?> <xsl:stylesheet version="1.0"      xmlns:xsl="http://www.w3.org/1999/xsl/transform"     exclude-result-prefixes="xsl xsi">      <xsl:output method="xml" indent="yes" omit-xml-declaration="no"         standalone="no" doctype-public="-//oasis//dtd dita composite//en" doctype-system="topic.dtd"/>      <!-- generic element -->      <xsl:template match="@* | node()">         <xsl:copy>             <xsl:apply-templates select="@*|node()" />         </xsl:copy>     </xsl:template>      <xsl:template match="table">         <table>             <xsl:apply-templates select="@role | @media" mode="table.att"/>             <xsl:apply-templates select="@*"/>             <xsl:apply-templates />         </table>     </xsl:template>      <xsl:template match="@*">         <xsl:if test="local-name(.)!='nonamespaceschemalocation'">             <xsl:attribute name="{local-name()}">                 <xsl:value-of select="."/>             </xsl:attribute>         </xsl:if>     </xsl:template>     <xsl:template match="@*" mode="table.att">         <xsl:choose>             <xsl:when test="local-name() = 'role'">                 <xsl:attribute name="outputclass">                     <xsl:value-of select="."></xsl:value-of>                 </xsl:attribute>             </xsl:when>             <xsl:otherwise>                 <!-- <xsl:apply-templates select="."/> -->             </xsl:otherwise>         </xsl:choose>     </xsl:template>  </xsl:stylesheet> 

as expected, doesn't trick. please me this. think need send attributes in order concatenate not sure how that.

try this

    <xsl:template match="table">         <table>             <xsl:apply-templates select="@title"/>             <xsl:if test="@role , @media">             <xsl:attribute name="outputclass">                 <xsl:value-of select="concat(@media, ' ', @role)"/>             </xsl:attribute>                 </xsl:if>             <xsl:apply-templates />         </table> </xsl:template>