有没有更好的方法来执行以下XSLT

Question

I am learning XSLT and doing some simple examples to get a better taste of it. I want to transform a XML file to html via XSLT. Here is my XML:

<structure>
    <part class="H1" id="h11"/>
    <part class="H2" id="h21"/>
    <part class="H3" id="h31"/>
    <part class="H4" id="h41"/>
    <part class="H5" id="h51"/>
    <part class="H6" id="h61"/>
</structure>
<style>
    <property part-name="h11" name="text">This is a h1 heading</property>
    <property part-name="h21" name="text">This is a h2 heading</property>
    <property part-name="h31" name="text">This is a h3 heading</property>
    <property part-name="h41" name="text">This is a h4 heading</property>
    <property part-name="h51" name="text">This is a h5 heading</property>
    <property part-name="h61" name="text">This is a h6 heading</property>
</style>

And here is my simple XLST:

<xsl:key name="headings" match="property[@name='text']" use="@part-name"/>
<xsl:template match="part[@class='H1']">
    <h1>
        <xsl:value-of select="key('headings', @id)"/>
    </h1>
</xsl:template>
<xsl:key name="headings" match="property[@name='text']" use="@part-name"/>
<xsl:template match="part[@class='H2']">
    <h2>
        <xsl:value-of select="key('headings', @id)"/>
    </h2>
</xsl:template>
<xsl:template match="part[@class='H3']">
    <h3>
        <xsl:value-of select="key('headings', @id)"/>
    </h3>
</xsl:template>
<xsl:template match="part[@class='H4']">
    <h4>
        <xsl:value-of select="key('headings', @id)"/>
    </h4>
</xsl:template>
<xsl:template match="part[@class='H5']">
    <h5>
        <xsl:value-of select="key('headings', @id)"/>
    </h5>
</xsl:template>
<xsl:template match="part[@class='H6']">
    <h6>
        <xsl:value-of select="key('headings', @id)"/>
    </h6>
</xsl:template>

As you can see, it is very verbose and repetitive. Is there a way via some XPath expression to make it shorter and actually do the job in a better way? Perhaps, something like a regEx? Another way I can think of is with the use of <xsl:if> and have the whole thing inside one single template, but that's not much of an improvement IMO.

Answer 1

I think you want

<xsl:template match="part[starts-with(@class, 'H')]">
    <xsl:element name="h{translate(@class, 'H', '')}">
        <xsl:value-of select="key('headings', @id)"/>
    </xsl:element>
</xsl:template>