Clay Leeds wrote:
You can also write it this way:
<fo:table-cell>
<xsl:attribute name="number-columns-spanned"><xsl:value-of
select="$nb_header"></xsl:value-of>
<fo:block>General comment for header 1, 2, 3</fo:block>
</fo:table-cell>
Does anyone know if one way is "better" than another (read more
efficient)?
I didn't meet any implementation where it makes a difference
whether you use xsl:attribute or an AVT. The xsl:attribute
is more verbose, which may increase parsing time by an insignificant
amount. Some poeple like the more verbose way, others are more
for AVTs.
Note that AVTs can substitute for complicated concat()'s:
<foo href="http://{$host}:{$port}{$root}/bar.html"/>
Alternative
<foo>
<xsl:attribute name="href">
<xsl:value-of select="concat(
'http://',$host,':',$port,$root,'/bar.html')"/>
</xsl:attribute>
</foo>
or
<foo>
<xsl:attribute name="href">
<xsl:text>http://<xsl:text>
<xsl:value-of select="$host"/>
<xsl:text>:<xsl:text>
<xsl:value-of select="$port"/>
<xsl:value-of select="$root"/>
<xsl:text>/bar.html<xsl:text>
</xsl:attribute>
</foo>
Because XPath 1.0 doesn't have conditional and iteration operators,
the latter may be interesting in such cases. (XPath 2.0 will have
such operators). Also, xsl:attribute must be used if the attribute
name isn't predermined, for example taken from the source XML.
J.Pietschmann
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