xsl:map

Constructs an XPath 3.1 map from a sequence of xsl:map-entry children.

<xsl:map>
  <xsl:map-entry key="'name'" select="'Patrick'"/>
  <xsl:map-entry key="'age'" select="42"/>
</xsl:map>

xsl:map is the construction counterpart to the XPath map{} literal — useful when keys or values come from XSLT instructions that can’t easily be expressed inline. Each xsl:map-entry contributes one key-value pair. Duplicate keys cause a dynamic error unless allowed by configuration.

xsl:map-entry attributes

If select is absent, the body of xsl:map-entry (a sequence constructor) provides the value.

Example

Building a lookup table from input data:

<xsl:variable name="prices" as="map(*)">
  <xsl:map>
    <xsl:for-each select="product">
      <xsl:map-entry key="@id" select="@price"/>
    </xsl:for-each>
  </xsl:map>
</xsl:variable>

<xsl:value-of select="$prices('A-100')"/>