XSL Not passing parameter through - xslt

The Problem
My parameters are coming up empty when passing through from a wildcarded templte match.
My xml Source :
<c:control name="table" flags="all-txt-align-top all-txt-unbold">
<div xmlns="http://www.w3.org/1999/xhtml">
<thead>
<tr>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td> </td>
</tr>
</tbody>
</c:control>
My XSL :
The initial c:control[#name='table'] match is to do with a wider piece of XSL architecture, and splitting out calls from a main template
<xsl:template match="c:control[#name='table']">
<xsl:call-template name="table" />
</xsl:template>
It then calls a named template in another file, which shouldn't change my starting reference - I should still be able to reference c:control[#name='table'] as if I was in the matched template.
<xsl:template name="table">
<xsl:variable name="all-txt-top">
<xsl:if test="contains(#flags,'all-txt-align-top')">true</xsl:if>
</xsl:variable>
<xsl:variable name="all-txt-unbold" select="contains(#flags,'all-txt-unbold')" />
<div xmlns="http://www.w3.org/1999/xhtml">
<table>
<xsl:apply-templates select="xhtml:*" mode="table">
<xsl:with-param name="all-txt-top" select="$all-txt-top" />
<xsl:with-param name="all-txt-unbold" select="$all-txt-unbold" />
</xsl:apply-templates>
</table>
</div>
</xsl:template>
If I get the value of all-txt-top in the above template, it works as expected.
However, trying to passing it through to the template below is failing - I'm not getting anything.
<xsl:template match="xhtml:thead|xhtml:tbody" mode="table">
<xsl:param name="all-txt-top" />
<xsl:param name="all-txt-unbold" />
<xsl:element name="{local-name()}">
<xsl:apply-templates select="*" mode="table" />
</xsl:element>
</xsl:template>
Even if i try passing a simple string through as a parameter - it doesn't make it to the xhtml:thead template.
Not sure where I'm going wrong... Any help would be much appreciated.

In the sample code you have shown us, you call the named table template after the c:control element is matched
<xsl:template match="c:control[#name='table']">
<xsl:call-template name="table" />
</xsl:template>
This means within the table template, the current context element is c:control. However in your sample XML, the only child of the c:control is a div element. Therefore, when you do your apply-templates....
<xsl:apply-templates select="xhtml:*" mode="table">
... it will will look for a template that matches xhtml:div at this point. If you have no such template, the default template match will kick in, which will just ignore the element and process its children. This will not pass on any parameters though, and so you template that matches xhtml:thead will not have any parameters values.
One solution would be to have a template to specifically match the xhtml:div element, and pass on the attributes
<xsl:template match="xhtml:div" mode="table">
<xsl:param name="all-txt-top"/>
<xsl:param name="all-txt-unbold"/>
<xsl:apply-templates select="xhtml:*" mode="table">
<xsl:with-param name="all-txt-top" select="$all-txt-top"/>
<xsl:with-param name="all-txt-unbold" select="$all-txt-unbold"/>
</xsl:apply-templates>
</xsl:template>
In fact, you could change the template match here to just "xhtml:*" to make it more generic if you want to cope with more elements.

Related

Inline element data not appearing where expected after XSL transform

With the following XML
<para>Refer to Table 3 and Figure <grphcref refid="apm00-02-02-000018" shownow="0">6</grphcref>
for the door dimensions and clearances.</para>
and this XSL:
<xsl:template match="prcitem">
<xsl:for-each select="para">
<p>
<xsl:value-of select="." />
<xsl:apply-templates select="./grphcref" />
</p>
</xsl:for-each>
<xsl:apply-templates select="grphcref" />
<xsl:apply-templates select="table" />
<xsl:apply-templates select="unlist" />
</xsl:template>
<xsl:template match="grphcref">
<xsl:variable name="gotoimg" select="concat('#',#refid)"/>
<a href="{$gotoimg}" >
<xsl:value-of select="." /> - <xsl:value-of select="#refid" /> </a>
</xsl:template>
I get:
<p>Refer to Table 3 and Figure 6 for the door dimensions and clearances.
6 - apm00-02-02-000018
when I expected:
<p>Refer to Table 3 and Figure 6 - apm00-02-02-000018
for the door dimensions and clearances.
Can anyone offer guidance as to where I went wrong?
thx
If a para element is supposed to be transformed to a p element then in my view the "natural" way in XSLT is a template
<xsl:template match="para">
<p>
<xsl:apply-templates/>
</p>
</xsl:template>
If any other elements need special treatment add a template e.g.
<xsl:template match="grphcref">
<xsl:variable name="gotoimg" select="concat('#',#refid)"/>
<a href="{$gotoimg}" >
<xsl:value-of select="." /> - <xsl:value-of select="#refid" /> </a>
</xsl:template>
Text nodes are copied through to the result by the built-in templates.
The input sample doesn't explain why you mix template matching and for-each and why or whether you need xsl:apply-templates with any particularly selected nodes; as long as the input order should be preserved a simple processing of all child nodes with <xsl:apply-templates/> should suffice.

Compare xml node values in xsl and highlight differences

I have an xml. I am transforming it using xsl stylesheet and showing in html page using java. My requirement is , I need to compare two node values and if there is a difference, I need to highlight the changed character value. How can this be done ?
XML :
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<Message>
<DiffDetailMessage>
<TestCaseID>000001</TestCaseID>
<res1>VI7002 1D</res1>
<res2>VI7002 DD </res2>
</DiffDetailMessage>
<DiffDetailMessage>
<TestCaseID>000002</TestCaseID>
<res1>BS7002 1D</res1>
<res2>BS7002 SS </res2>
</DiffDetailMessage>
</Message>
XSL :
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<html>
<body>
<h2>Report</h2>
<xsl:apply-templates/>
</body>
</html>
</xsl:template>
<xsl:template match="Message/DiffDetailMessage">
<table border="2">
<xsl:apply-templates select="TestCaseID"/>
<xsl:apply-templates select="res1"/>
<xsl:apply-templates select="res2"/>
</table>
</xsl:template>
<xsl:template match="TestCaseID">
<tr><td><b>Test CaseID </b></td>
<td><xsl:value-of select="."/></td></tr>
</xsl:template>
<xsl:template match="res1">
<tr><td><b>Res1</b></td>
<td><xsl:value-of select="."/> </td> </tr>
</xsl:template>
<xsl:template match="res2">
<tr><td><b>Res2</b></td>
<td><xsl:value-of select="."/></td> </tr>
</xsl:template>
</xsl:stylesheet>
How can I compare node values res1 with res2 ? In my case, value of "VI70002 ID" should be compared against "VI7002 DD" and since there is a change, I should highlight "D" character in html page using xsl. Can someone help on this regard.
If you are using only XSLT-1.0, you can use a recursive named template to iterate over the string char-by-char: the following template takes two strings as input and puts a bold emphasis on each different char. If the second string is longer than the first one, these trailing chars are highlighted, too.
<xsl:template name="cmp">
<xsl:param name="str1" />
<xsl:param name="str2" />
<xsl:choose>
<xsl:when test="substring($str1,1,1) = substring($str2,1,1)">
<xsl:value-of select="substring($str2,1,1)"/>
</xsl:when>
<xsl:when test="substring($str1,1,1) != substring($str2,1,1)">
<b><xsl:value-of select="substring($str2,1,1)"/></b>
</xsl:when>
<xsl:when test="$str1 = '' and substring($str2,1,1)">
<b><xsl:value-of select="substring($str2,1,1)"/></b>
</xsl:when>
</xsl:choose>
<xsl:if test="string-length($str1) > 0 or string-length($str2) > 0">
<xsl:call-template name="cmp">
<xsl:with-param name="str1" select="substring($str1,2)" />
<xsl:with-param name="str2" select="substring($str2,2)" />
</xsl:call-template>
</xsl:if>
</xsl:template>
Call this template from one of the other templates to get a (partially) highlighted "string", e.g.
<xsl:template match="res2">
<tr><td><b>Res2</b></td>
<td>
<xsl:call-template name="cmp">
<xsl:with-param name="str1" select="../res1" />
<xsl:with-param name="str2" select="." />
</xsl:call-template>
</td> </tr>
</xsl:template>

XSL, SUM & Multiply with Condition

Im doing an assignment for University (so im new to XSL coding) in making a quasi ecommerce site, and will provide as much detail as i can so it makes sense.
Sample XML Data:
<Items>
<Item>
<ItemID>50001</ItemID>
<ItemName>Samsung Galaxy S4</ItemName>
<ItemPrice>629</ItemPrice>
<ItemQty>14</ItemQty>
<ItemDesc>4G Mobile</ItemDesc>
<QtyHold>0</QtyHold>
<QtySold>1</QtySold>
</Item>
<Item>
<ItemID>50002</ItemID>
<ItemName>Samsung Galaxy S5</ItemName>
<ItemPrice>779</ItemPrice>
<ItemQty>21</ItemQty>
<ItemDesc>4G Mobile</ItemDesc>
<QtyHold>0</QtyHold>
<QtySold>1</QtySold>
</Item>
</Items>
Website
So the process is, when a person clicks 'Add to Cart' in the top Table, the ItemQty is decreased by 1 on the ItemQty in the XML, while it increases by 1 in the QtyHold in the XML. (QtyHold represents what has been added to the shopping Cart. Thus if QtyHold is >0 then its been added to the Cart)
My problem refers to the 2nd Table (code below), where the Total figure works - only if dealing with 1 Item. Thus, if Item Number '50001' is added a 2nd time, the Total wont change.
<xsl:template match="/">
<fieldset>
<legend>Shopping Cart</legend>
<BR />
<table border="1" id="CartTable" align="center">
<tr><th>Item Number</th>
<th>Price</th>
<th>Quantity</th>
<th>Remove</th></tr>
<xsl:for-each select="/Items/Item[QtyHold > 0]">
<tr><td><xsl:value-of select="ItemID"/></td>
<td>$<xsl:value-of select="ItemPrice"/></td>
<td><xsl:value-of select="QtyHold"/></td>
<td><button onclick="addtoCart({ItemID}, 'Remove')">Remove from Cart</button></td> </tr>
</xsl:for-each>
<tr><td ALIGN="center" COLSPAN="3">Total:</td><td>$<xsl:value-of select="sum(//Item[QtyHold >0]/ItemPrice)"/></td></tr>
</table>
<BR />
<button onclick="Purchase()" class="submit_btn float_l">Confirm Purchase</button>
<button onclick="CancelOrder()" class="submit_btn float_r">Cancel Order</button>
</fieldset>
</xsl:template>
</xsl:stylesheet>
So what needs to happen is within the following code, while it checks if the QtyHold is greater than 0 (which would mean its in the shopping Cart) & to sum these values, it also needs to multiply QtyHold & ItemPrice.
<xsl:value-of select="sum(//Item[QtyHold >0]/ItemPrice)"/>
I tried many variations of Code like this below... but can't seem to make anything work.
select="sum(//Item[QtyHold >0]/ItemPrice)/(QtyHold*ItemPrice"/>
If you are using XSLT 2.0, the expression you could use would be this:
<xsl:value-of select="sum(//Item[QtyHold >0]/(ItemPrice * QtyHold))"/>
However, in XSLT 1.0 that is not allowed. Instead, you could achieve the result you need with an extension function. In particular the "node-set" function. First you would create a variable like this, in which you construct new nodes holding each item total
<xsl:variable name="itemTotals">
<xsl:for-each select="//Item[QtyHold >0]">
<total>
<xsl:value-of select="ItemPrice * QtyHold" />
</total>
</xsl:for-each>
</xsl:variable>
Ideally, you would like to do sum($itemTotals/total), but this won't work, because itemTotals is a "Result Tree Fragment" and the sum function only accepts a node-set. So you use the node-set extension function to convert it. First declare this namespace in your XSLT...
xmlns:exsl="http://exslt.org/common"
Then, your sum function would look like this:
<xsl:value-of select="sum(exsl:node-set($itemTotals)/total)"/>
Alternatively, if you couldn't even use an extension function, you could use the "following-sibling" approach, to select each Item at a time, and keep a running total. So, you would have a template like this:
<xsl:template match="Item" mode="sum">
<xsl:param name="runningTotal" select="0" />
<xsl:variable name="newTotal" select="$runningTotal + ItemPrice * QtyHold" />
<xsl:variable name="nextItem" select="following-sibling::Item[1]" />
<xsl:choose>
<xsl:when test="$nextItem">
<xsl:apply-templates select="$nextItem" mode="sum">
<xsl:with-param name="runningTotal" select="$newTotal" />
</xsl:apply-templates>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$newTotal" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
And to call it, to get the sum, you just start off by selecting the first node
<xsl:apply-templates select="(//Item)[1]" mode="sum" />
Try this XSLT which demonstrates the various approaches
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"
xmlns:exsl="http://exslt.org/common"
exclude-result-prefixes="exsl">
<xsl:output method="html" indent="yes" />
<xsl:template match="/">
<table border="1" id="CartTable" align="center">
<tr><th>Item Number</th>
<th>Price</th>
<th>Quantity</th>
</tr>
<xsl:for-each select="/Items/Item[QtyHold > 0]">
<tr>
<td><xsl:value-of select="ItemID"/></td>
<td>$<xsl:value-of select="ItemPrice"/></td>
<td><xsl:value-of select="QtyHold"/></td>
</tr>
</xsl:for-each>
<tr>
<td ALIGN="center" COLSPAN="2">Total:</td>
<xsl:variable name="itemTotals">
<xsl:for-each select="//Item[QtyHold >0]">
<total>
<xsl:value-of select="ItemPrice * QtyHold" />
</total>
</xsl:for-each>
</xsl:variable>
<td>
<!-- XSLT 2.0 only: $<xsl:value-of select="sum(//Item[QtyHold >0]/(ItemPrice * QtyHold))"/>-->
$<xsl:value-of select="sum(exsl:node-set($itemTotals)/total)"/>
$<xsl:apply-templates select="(//Item)[1]" mode="sum" />
</td>
</tr>
</table>
</xsl:template>
<xsl:template match="Item" mode="sum">
<xsl:param name="runningTotal" select="0" />
<xsl:variable name="newTotal" select="$runningTotal + ItemPrice * QtyHold" />
<xsl:variable name="nextItem" select="following-sibling::Item[1]" />
<xsl:choose>
<xsl:when test="$nextItem">
<xsl:apply-templates select="$nextItem" mode="sum">
<xsl:with-param name="runningTotal" select="$newTotal" />
</xsl:apply-templates>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$newTotal" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
As a final thought, why don't you just a new Total element to each Item element in your XML. Initially, it would be set to 0, like QtyHold. Then, when you increment QtyHold by 1, by what ever process you do, you can also increment Total by the amount held in ItemPrice. That way, you can just sum this Total node to get the overall total, without the need for extension functions or recursive templates.

Named template parameter as XPath for template match

Is it possible to specify a parameter of a named template as the match pattern in another template?
Here, if I try to call the 'excerpt' template and pass in an XPath as the 'path' param, I get an error:
<xsl:template name="excerpt">
<xsl:param name="path" select="''" />
<xsl:apply-templates select="$path" />
</xsl:template>
<xsl:template match="$path">
<article class="newsarticle">
<h2><xsl:value-of select="title" /></h2>
<xsl:copy-of select="excerpt/node()" />
</article>
</xsl:template>
I can accomplish it with <xsl:for-each>, but I wondered if there was a good solution using something similar to the approach above.
Edit: here's what I'm trying to accomplish, working with a <xsl:for-each>:
<xsl:template name="excerpt">
<xsl:param name="path" select="''" />
<xsl:for-each select="$path">
<article class="newsarticle">
<h2><xsl:value-of select="title" /></h2>
<xsl:copy-of select="excerpt/node()" />
</article>
</xsl:for-each>
</xsl:template>
Edit: an example of calling the template:
<xsl:call-template name="excerpt">
<xsl:with-param name="path" select="path/to/nodeset" />
</xsl:call-template>
Thanks for the additional information. One clarification to make here is that in that call-template there, you are passing a node-set, not a path. String values of paths are pretty much worthless in XSLT 1.0 without convoluted parsing logic or extension functions.
There is a way to do what you're trying to do, just in a slightly different way from what you envisioned. You just need to use a template with a generic match value and a mode value, like this.
<xsl:template name="excerpt">
<xsl:param name="items" select="''" />
<xsl:apply-templates select="$items" mode="excerptItem" />
</xsl:template>
<xsl:template match="node() | #*" mode="excerptItem">
<article class="newsarticle">
<h2>
<a href="{$root}/news/view/{title/#handle}">
<xsl:value-of select="title" />
</a>
</h2>
<xsl:copy-of select="excerpt/node()" />
</article>
</xsl:template>
But if the named template is only serving to invoke the match template, then you don't need the named template at all. You can just use the match template directly:
<xsl:apply-templates select="path/to/nodeset" mode="excerptItem" />
The purpose of the mode attribute is that when you specify mode in an apply-templates, the XSLT will only consider templates that also have that same mode value. So you could define two different templates that handled the same element in different ways:
<xsl:template match="Item" mode="header">
Item in header: <xsl:value-of select="." />
</xsl:template>
<xsl:template match="Item" mode="body">
Item in body: <xsl:value-of select="." />
</xsl:template>
Then you can specify which one you want to use at different times:
<div id="header">
<xsl:apply-templates match="/root/Items/Item" mode="header" />
</div>
<div id="body">
<xsl:apply-templates match="/root/Items/Item" mode="body" />
</div>
and the appropriate one would be used in each case. You can read more about modes here.
node() | #* is a generic XPath that matches any node or attribute, so if you use it in the match attribute of a template, you can make a template that will match almost anything you use in an apply-templates (as long as there isn't another template with higher precedence). Using that in combination with a mode allows you to make a template that you can invoke on any node and only at specific times when you want to. In your example, it looks like the element you will use with this template will always be the same, so it would probably be better practice to explicitly specify it:
<xsl:template match="ExportItem" mode="excerptItem">
Is it possible to get a parameter of a named template to act as the
match path in another template?
No, in XSLT 2.0 the match pattern of a template can only contain a variable reference as an argument to an id() function.
See the XSLT 2.0 W3C Specificification for the complete grammar of a Pattern
http://www.w3.org/TR/xslt20/#pattern-syntax
In XSLT 1.0 it is an error to have a variable reference anywhere within a match pattern.

with-param not working in apply-templates

I am currently trying to generate the creation SQL for my tables based off of a Visio diagram. I am doing this using the approach found here.
http://www.dougboude.com/blog/1/2008/11/SQL-Forward-Engineering-with-Visio-2003-Professional.cfm
I am attempting to modify the xslt file found there to better model the syntax that we use in our office. Unfortunately, I cannot get the part that involves passing the table name into the template for the table columns to work. The template gets called, but it seems to ignore my parameters.
<xsl:template match="Entity" mode="table">
IF NOT EXISTS (SELECT * FROM sysobjects WHERE name = '<xsl:value-of select="#PhysicalName"/>')
<br />
CREATE TABLE dbo.[<xsl:value-of select="#PhysicalName"/>]
(
<br />
<xsl:for-each select="EntityAttributes/EntityAttribute">
<span style="padding-left: 20px;">
<xsl:apply-templates select="../../../../Attributes/Attribute[#AttributeID = current()/#EntityAttributeID]" mode="table">
<xsl:with-param name="EntityName" select="#PhysicalName" />
</xsl:apply-templates>
</span>
<xsl:if test="count(../../EntityAttributes/EntityAttribute) != position()">,</xsl:if>
<br />
</xsl:for-each>
)
<br />
GO
<p />
<xsl:apply-templates select="EntityAnnotations/EntityAnnotation[#AnnotationType='Primary Key']" mode="pk"/>
<xsl:apply-templates select="EntityAnnotations/EntityAnnotation[#AnnotationType='Alternate Key']" mode="ak"/>
<xsl:apply-templates select="EntityAnnotations/EntityAnnotation[#AnnotationType='Index']" mode="idx"/>
</xsl:template>
<!-- Create column for each EntityAttribute -->
<xsl:template match="Attribute" mode="table">
<xsl:param name="EntityName"></xsl:param>
<xsl:variable name="nullability">
<xsl:choose>
<xsl:when test='#AllowNulls = "false"'>NOT NULL CONSTRAINT DF_<xsl:value-of select="$EntityName" />_<xsl:value-of select="#PhysicalName"/>
</xsl:when>
<xsl:otherwise> NULL</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="incremental">
<xsl:choose>
<xsl:when test='#PhysicalDatatype = "int identity"'> INT IDENTITY(1,1)</xsl:when>
<xsl:otherwise><xsl:value-of select="#PhysicalDatatype"/></xsl:otherwise>
</xsl:choose>
</xsl:variable>
[<xsl:value-of select="#PhysicalName"/>] <span style="text-transform:uppercase;"> <xsl:value-of select="$incremental"/></span> <xsl:value-of select="$nullability"/>
</xsl:template>
The parameter is not ignored, but I guess it is empty. You call:
<xsl:with-param name="EntityName" select="#PhysicalName" />
where #PhysicalName must be an attribute of EntityAttributes/EntityAttribute element from the for-each. The fact that you use #PhysicalName earlier in
CREATE TABLE dbo.[<xsl:value-of select="#PhysicalName"/>]
makes me think in reality it is an attribute of the Entity element the template matches. You need to store its value in a variable first (before the for-each):
<xsl:variable name="PhysicalName" select="#PhysicalName" />
and then use it like this:
<xsl:with-param name="EntityName" select="$PhysicalName" />
<!-- -------------------------------------^ -->
The for-each resets the context node with every iteration, I guess this is where it goes wrong for you.