- <pz:metadata type="callnumber">
- <xsl:choose>
- <xsl:when test="string-length(callno)">
- <xsl:value-of select="callno"/>
- </xsl:when>
- <xsl:otherwise>PAZPAR2_NULL_VALUE</xsl:otherwise>
- </xsl:choose>
- </pz:metadata>
- <pz:metadata type="available">
- <xsl:choose>
- <xsl:when test="string-length(available)">
- <xsl:value-of select="available"/>
- </xsl:when>
- <xsl:otherwise>PAZPAR2_NULL_VALUE</xsl:otherwise>
- </xsl:choose>