CODEWITHSUNDEEP
xmlxslt
gcpreston
gcpreston

Reputation: 135

Saving XML Values to Variable Using XSLT

I am trying to save values from an XML doc into a variable. I am aware you can do the following:

<xsl:variable name="variableName" select="xml/node/*"/>

Below is my XML code:

<xml>
<graph2>
    <averageHighTemperatures>
        <January>8.3</January>
        <February>8.5</February>
        <March>11.1</March>
        <April>13.5</April>
        <May>17.1</May>
        <June>20.0</June>
        <July>22.6</July>
        <August>22.5</August>
        <September>19.3</September>
        <October>15.3</October>
        <November>11.2</November>
        <December>9.1</December>
    </averageHighTemperatures>
</graph2>
</xml>

How can I select the value of each month by specifying the node in the XML doc?

Below is my XSL: 

    <xsl:variable name="var" select="xml/graph2/averageHighTemperatures/*"/>

    <table>
        <xsl:for-each select="xml/graph2/averageHighTemperatures">
        <tr>
            <td><xsl:value-of select="January $var"/></td>
            <td><xsl:value-of select="February $var"/></td>
        </tr>
        </xsl:for-each>
    </table>

In the above, "January" and "February" are only being used to present the value wanted.

Upvotes: 2

Views: 1343

Answers (1)

Mads Hansen
Mads Hansen

Reputation: 66851

Since the month names are the element names, you could select them with a predicate filter matching the local-name():

<xsl:transform version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" indent="yes"/>

  <xsl:template match="/">
    <xsl:variable name="var" select="xml/graph2/averageHighTemperatures/*"/>

    <table>
        <xsl:for-each select="xml/graph2/averageHighTemperatures">
            <tr>
                <td><xsl:value-of select="'January ', $var[local-name()='January']"/></td>
                <td><xsl:value-of select="'February ', $var[local-name()='February']"/></td>
            </tr>
        </xsl:for-each>
    </table>
  </xsl:template>

</xsl:transform>

If you are going to perform multiple lookups, then a better/faster way to select by name would be to use xsl:key and the key() function:

<xsl:transform version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" indent="yes"/>

  <xsl:key name="var" match="xml/graph2/averageHighTemperatures/*" use="local-name()"/>

  <xsl:template match="/">
    <table>
        <xsl:for-each select="xml/graph2/averageHighTemperatures">
            <tr>
                <td><xsl:value-of select="'January ', key('var', 'January')"/></td>
                <td><xsl:value-of select="'February ', key('var', 'February')"/></td>
            </tr>
        </xsl:for-each>
    </table>
  </xsl:template>

</xsl:transform>

Upvotes: 1

Related Questions