Subject: Re: Is it possible to access a tag after using apply-templates?
From: XemonerdX <xemonerdx@xxxxxxxxx>
Date: Fri, 4 Jul 2008 17:01:04 +0200
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Michael,
That sounds very interesting and something I will have to try. My main
concern at this point is that there will be dozens of xsl:param's and
xsl:template's that would have to be generated into an XSLT stylesheet
(this will be for applications that need to display a lot of data,
each record can hold many (dynamic) fields etc). Generating such an
XSLT is not a problem now that I have the basic structure thanks to
Martin's example. However, I am wondering if the performance will
deterriorate a lot becuz of the amount of xsl:param's passed around?
Would your double-pass approach help in such a case? Considering data
is gradually compiled into larger bits, I would imagine it's better
performance-wise, but not sure.
Thank you,
Edwin
On Fri, Jul 4, 2008 at 4:40 PM, Michael Kay <mike@xxxxxxxxxxxx> wrote:
> Another way of tackling this kind of problem, which I've generally found
> works better in the long run, is as follows. At present you essentially have
> a miniature layout language, and you have written an interpreter in XSLT
> that interprets that language, fetching data from a source document when the
> layout script instructs you to do so.
>
> The alternative approach is to compile your layout language: that is, to
> write an XSLT stylesheet that converts it into an XSLT stylesheet, which
> then operates on the data file directly.
>
> Michael Kay
> http://www.saxonica.com/
>
>> -----Original Message-----
>> From: XemonerdX [mailto:xemonerdx@xxxxxxxxx]
>> Sent: 04 July 2008 14:56
>> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
>> Subject: Is it possible to access a tag after using
>> apply-templates?
>>
>> Is the following possible? I can't seem to wrap my head
>> around it, but I am an XSLT newbie, so that might explain it :)
>>
>> I have an XML file that contains data that needs to be displayed:
>> <?xml version="1.0" ?>
>> <top>
>> <data>
>> <title>title of page</title>
>> <name>Your name</name>
>> </data>
>> <cells>
>> <cell>
>> <name>cell 1</name>
>> <value>100</value>
>> </cell>
>> <cell>
>> <name>cell 2</name>
>> <value>200</value>
>> </cell>
>> <cell>
>> <name>cell 3</name>
>> <value>300</value>
>> </cell>
>> </cells>
>> </top>
>>
>> I also have a layout XML file that will be used to put the
>> data from the above XML-file into a certain layout, called layout.xml:
>> <?xml version="1.0" encoding="utf-8"?>
>> <layout>
>> <layout-main>
>> <html>
>> <head>
>> <title><insert-title/></title>
>> </head>
>> <body>
>> <div>
>> My name is: <insert-name/>
>> </div>
>> <div>
>> <table>
>> <insert-cells/>
>> </table>
>> </div>
>> </body>
>> </html>
>> </layout-main>
>> <layout-cell>
>> <tr>
>> <td><insert-cell-name/></td>
>> <td><insert-cell-value/></td>
>> </tr>
>> </layout-cell>
>> </layout>
>>
>> And then I have the XSL file to tie it all together (hopefully!):
>> <?xml version="1.0"?>
>> <xsl:stylesheet
>> xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>> version="1.0"> <xsl:output method="html" indent="yes"/>
>> <xsl:variable name="data" select="/"/> <xsl:variable name="layout"
>> select="document('http://localhost/webopac2/xml/datatemplate_l
>> ayout.xml')"/>
>> <xsl:template match="/">
>> <xsl:apply-templates select="$layout/layout/layout-main/*"/>
>> </xsl:template>
>> <!-- transformations -->
>> <xsl:template match="insert-name">
>> <xsl:value-of select="$data/top/data/name"/>
>> </xsl:template> <xsl:template match="insert-title">
>> <xsl:value-of select="$data/top/data/title"/>
>> </xsl:template> <xsl:template match="insert-cells">
>> <xsl:for-each select="$data/top/cells/cell">
>> <xsl:variable name="name" select="name"/>
>> <xsl:variable name="value" select="value/*"/>
>> <xsl:apply-templates
>> select="$layout/layout/layout-cell/tr">
>> <xsl:with-param name="name" select="$name"/>
>> </xsl:apply-templates>
>> <xsl:call-template name="insert-cell-name">
>> <xsl:with-param name="name" select="$name"/>
>> </xsl:call-template>
>> </xsl:for-each>
>> </xsl:template>
>> <xsl:template name="insert-cell-name">
>> <xsl:param name="name"/>
>> <xsl:value-of select="$name"/>
>> </xsl:template>
>> <!-- Identity transformation -->
>> <xsl:template match="@*|node()">
>> <xsl:copy>
>> <xsl:apply-templates select="@*|node()"/>
>> </xsl:copy>
>> </xsl:template>
>> </xsl:stylesheet>
>>
>> I would like the output to look like the following:
>> <html>
>> <head>
>> <title>title of page</title>
>> </head>
>> <body>
>> <div>
>> My name is: Your name
>> </div>
>> <div>
>> <table>
>> <tr>
>> <td>cell 1</td>
>> <td>100</td>
>> </tr>
>> <tr>
>> <td>cell 2</td>
>> <td>200</td>
>> </tr>
>> <tr>
>> <td>cell 3</td>
>> <td>300</td>
>> </tr>
>> </table>
>> </div>
>> </body>
>> </html>
>>
>> Unfortunately that's not quite the result. I can't seem to be
>> able to replace the 'insert-cell-name' and
>> 'insert-cell-value' tags with the corresponding 'name' and
>> 'value' tag values. Is this possible?
>>
>> The reason I want to keep as much layout out of the XLS-file
>> as possible is to allow non-developers to design a layout
>> without knowing XSLT. This way I can hopefully also use a
>> single XLS-file where 'layout.xml' can be easily changed/generated.
>>
>> Thanxxx for any guidance/advice/comments...
>>
>> Edwin
>
>
--
Edwin
PoeticTerror.Com
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