Question

I am trying to extract the forecast data from XML file to my XSLT 1.0.
I am new to these language, so I am using same lines of code multiple times. The difference in given code is only attribute @aac on for-each loop.

<xsl:for-each select="product/forecast/area[@aac='SA_PT001']">
    <xsl:value-of select="@description" /> :
    <xsl:value-of select="forecast-period/text[@type='precis']"/> : Min
    <xsl:value-of select="forecast-period/element[@type='air_temperature_minimum']"/> : Max
    <xsl:value-of select="forecast-period/element[@type='air_temperature_maximum']"/><br/>
</xsl:for-each>

<xsl:for-each select="product/forecast/area[@aac='QLD_PT015']">
    <xsl:value-of select="@description" /> :
    <xsl:value-of select="forecast-period/text[@type='precis']"/> : Min
    <xsl:value-of select="forecast-period/element[@type='air_temperature_minimum']"/> : Max
    <xsl:value-of select="forecast-period/element[@type='air_temperature_maximum']"/><br/>
</xsl:for-each>

<xsl:for-each select="product/forecast/area[@aac='NSW_PT027']">
    <xsl:value-of select="@description" /> :
    <xsl:value-of select="forecast-period/text[@type='precis']"/> : Min
    <xsl:value-of select="forecast-period/element[@type='air_temperature_minimum']"/> : Max
    <xsl:value-of select="forecast-period/element[@type='air_temperature_maximum']"/><br/>
</xsl:for-each>

can you give me idea to use loop or XSL template to reduce the code size?

Answer 1

<xsl:variable name="aac_list">NSW_PT027,QLD_PT015,NSW_PT027</xsl:variable>

<xsl:for-each select="product/forecast/area">
    <xsl:sort select="@description"/>
    <xsl:if test="contains($aac_list, ./@aac)">
        <xsl:value-of select="@description" /> :
        <xsl:value-of select="forecast-period/text[@type='precis']"/> : Min
        <xsl:value-of select="forecast-period/element[@type='air_temperature_minimum']"/> : Max
        <xsl:value-of select="forecast-period/element[@type='air_temperature_maximum']"/><br/>
    </xsl:if>
</xsl:for-each>

aac_list variable you can build dynamically