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using few or many templates?
- To: xsl-list at lists dot mulberrytech dot com
- Subject: [xsl] using few or many templates?
- From: Dan Diebolt <dandiebolt at yahoo dot com>
- Date: Fri, 16 Mar 2001 21:36:52 -0800 (PST)
- Reply-To: xsl-list at lists dot mulberrytech dot com
I have an XML file that looks like this:
<A>
<B>B</B>
<C>C</C>
<D>
<E>E1A</E>
<E>E1B</E>
<F>
<G>G1A</G>
<G>G1B</G>
<G>G1C</G>
</F>
</D>
<D>
<E>E2A</E>
<E>E2B</E>
<F>
<G>G2A</G>
<G>G2B</G>
<G>G2C</G>
</F>
</D>
</A>
Which I wish to convert to html and display in a table like this:
B| |
C| |
|E1A|
|E1B|
| |G1A
| |G1B
| |G1C
|E2A|
|E2B|
| |G2A
| |G2B
| |G2C
I can accomplish it in one tightly coded template:
<xsl:template match="A">
<table>
<tr><td><xsl:value-of select="B"/></td></tr>
<tr><td><xsl:value-of select="C"/></td></tr>
<xsl:for-each select="D">
<xsl:for-each select="E">
<tr><td></td><td><xsl:value-of select="."/></td></tr>
</xsl:for-each>
<xsl:for-each select="F/G">
<tr><td></td><td></td><td><xsl:value-of select="."/></td></tr>
</xsl:for-each>
</xsl:for-each>
</table>
</xsl:template>
Or with multiple templates:
<xsl:template match="A">
<table>
<xsl:apply-templates select="B"/>
<xsl:apply-templates select="C"/>
<xsl:apply-templates select="D"/>
</table>
</xsl:template>
<xsl:template match="B">
<tr><td><xsl:value-of select="."/></td></tr>
</xsl:template>
<xsl:template match="C">
<tr><td><xsl:value-of select="."/></td></tr>
</xsl:template>
<xsl:template match="D">
<xsl:apply-templates select="E"/>
<xsl:apply-templates select="F"/>
</xsl:template>
<xsl:template match="E">
<tr><td></td><td><xsl:value-of select="."/></td></tr>
</xsl:template>
<xsl:template match="F">
<xsl:apply-templates select="G"/>
</xsl:template>
<xsl:template match="G">
<tr><td></td><td></td><td><xsl:value-of select="."/></td></tr>
</xsl:template>
Note the first xsl fragment used no apply-templates and
the second fragment used multiple apply-templates.
My question to the list is this: As a matter of style, how
do you trade off these two extremes in coding? From the
simple to most complex situation, the issue of how to
factor your template usage must repeatedly come up.
How do you deal with this?
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