<xsl:variable name="v:olink-databases"
              as="element(h:targetdb)*">
   <xsl:if test="normalize-space($olink-databases) != ''">
      <xsl:for-each select="tokenize($olink-databases, ',\s*') ! normalize-space(.)">
         <xsl:variable name="db" select="resolve-uri(., static-base-uri())"/>
         <xsl:try>
            <xsl:variable name="olinkdb" select="doc($db)/h:targetdb"/>
            <xsl:if test="empty($olinkdb)">
               <xsl:message select="'No targets in olinkdb:', $db"/>
            </xsl:if>
            <xsl:sequence select="$olinkdb"/>
            <xsl:catch>
               <xsl:message select="'Failed to load olinkdb:', $db"/>
            </xsl:catch>
         </xsl:try>
      </xsl:for-each>
   </xsl:if>
</xsl:variable>