Xslt 2.0, xpath 2.0, Saxon 8B, XEP 4.4
I don't know an easy way to explain this, so please bear with me. I've scaled
down dramatically, but it's still a little lengthy.
I have a layout xml file that tells me which data values to select and how to
format the numeric values with respect to precision, whether to show the
currency/percent sign, etc. In addition, the data values may be "wrapped" in
text formatting instructions such as font, bold, etc. I use the information in
the layout file with different matching modes to build the header, body, and
footer of my output table.
My problem is this: Once I select my xpath, resolve it to the actual value, and
apply number formatting I need to traverse back up the tree to apply the text
formatting to the formatted number. I can't just apply-templates because I
lose my specific context.
Is there a way to build a result tree starting with the child element and
working up to the parent/grandparent?
Scaled down Examples below - the complete files are at
http://www.mwpoa.com/angela/xpathContextQuestion.html:
I apply fruit.xsl to fruit-layout.xml
Desired output:
<snip>
<td>
<p>
<b>$123.00</b> <!-- HERE -->
</p>
</td>
</snip>
Actual output:
<snip>
<td>
<p>$123.00</p>
</td>
</snip>
fruit-data.xml:
<?xml version="1.0" encoding="UTF-8"?>
<a>
<b>
<c>apple</c>
<d>123.000000</d>
</b>
</a>
fruit-layout.xml:
<?xml version="1.0" encoding="UTF-8"?>
<table>
<data-set>
<row-set xpath="doc('fruit-data.xml')/a/b" />
<order-by xpath="doc('fruit-data.xml')/a/b/c" />
</data-set>
<columns>
<column>
<format>
<type>currency</type>
<precision>2</precision>
<show-sign>first-and-last</show-sign>
</format>
<data-value>
<bold>
<xpath>doc('fruit-data.xml')/a/b/d</xpath>
</bold>
</data-value>
</column>
</columns>
</table>
fruit.xsl (abbreviated)
<xsl:stylesheet exclude-result-prefixes="#all"
xmlns:xs="http://www.w3.org/2001/XMLSchema";
xmlns:fc="http://www.myfruit.com/fruit";
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:sax="http://saxon.sf.net/";
version="2.0">
<snip>
<xsl:template match="columns">
<xsl:variable name="cols" select="." /> <!-- outer context -->
<xsl:variable name="rows" as="xs:string">
<xsl:value-of select="../data-set/row-set/@xpath" />
</xsl:variable>
<xsl:variable name="sort" as="xs:string">
<xsl:value-of select="../data-set/order-by/@xpath" />
</xsl:variable>
<xsl:for-each select="sax:eval(sax:expression($rows))">
<xsl:sort select="sax:eval(sax:expression(substring-after($sort,
concat($rows, '/'))))" />
<xsl:variable name="node" select="." /> <!-- data element context -->
<tr>
<xsl:for-each select="$cols/column">
<td><p>
<xsl:variable name="field"> <!-- value context -->
<xsl:value-of select="data-value/descendant::xpath" />
</xsl:variable>
<xsl:variable name="amt" as="xs:string"
select="$node/sax:evaluate(substring-after($field, concat($rows,'/')))" />
<xsl:variable name="precision" as="xs:integer">
<logic />
</xsl:variable>
<!-- The following line produces the child data value.
How do I wrap this with the parent <b> element? -->
<xsl:value-of
select="fc:nbr-format(number($amt),$precision,'true','$')" />
</p></td>
</xsl:for-each>
</tr>
</xsl:for-each>
</xsl:template>
<xsl:template match="bold">
<b>
<xsl:apply-templates />
</b>
</xsl:template>
<xsl:template match="xpath">
<!-- This is where I need the child data value to print in the result tree.
If I just match here, I lose the context and get ALL xpath values, when
I only want the formatted child data value resolved in the columns
template.
?????
-->
</xsl:template>
</snip>
</xsl:stylesheet>
Thanks in advance!
Angela Williams
Channel Developer
The 401k Company - Austin, Texas
512-344-1547
--~------------------------------------------------------------------
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
To unsubscribe, go to: http://lists.mulberrytech.com/xsl-list/
or e-mail: <mailto:xsl-list-unsubscribe(_at_)lists(_dot_)mulberrytech(_dot_)com>
--~--