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02.15.2008 at 10:46AM PST, ID: 23166880

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9.4

Extracting images from XML file using XSLT

Zones: Extensible Stylesheet Language Transformation (XSLT), Extensible Markup Language (XML)

Tags: XSLT and XML, Firefox 2, IE 7

Hi,

I have a very simple XML file (experimental) that contains references to other XML files and I apply an XSLT script to it to extract the information out of those files.

for example, in my XML file I have this node <chunk>Al-Intro </chunk>

then the XSLT will extract the text contained in the Al-Intro.xml file (which has an element called <text> in it) as follows:

<xsl:for-each select="chunk">

<xsl:variable name="container"><xsl:value-of select="."/></xsl:variable>

<xsl:variable name="file" select="concat($container,'.xml')"/>

<xsl:apply-templates select="document($file)//text"/>

And it works perfectly.

But now I have another element in the same file (<media>) where it has attributes that defines a picture for example.

I have tried to modify my code to extract the media content the same way, but it isn't working. I'm not sure why since I'm have asleep after a long day ;)

Plz could some XSLT expert have a look at it?

Thanks a lot,

MZM

         
           
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             XML file:
 
<?xml version="1.0" encoding="UTF-8"?>
<ChunksList>
<chunk>AL-Intro</chunk>
<chunk>AL-Types</chunk>
<chunk>AL-AP1</chunk>
<chunk>AL-ANS1</chunk>
</ChunksList>
-----------------------------------------------------------------
XSLT file:
 
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="text" media-type="text" omit-xml-declaration="yes"/>
        
<xsl:template match="ChunksList">
<Lesson>
<xsl:for-each select="chunk">
<xsl:variable name="container"><xsl:value-of select="."/></xsl:variable>
<xsl:variable name="file" select="concat($container,'.xml')"/>
<xsl:apply-templates select="document($file)//text"/>
 
<!-- until this point everything is working for text element see XML file below-->
			 
<!--for selecting medis: especially image with chunks-->
<xsl:apply-templates select="document($file)//media[@type='gif'] | media[@type='jpg'] | media[@type='GIF'] | media[@type='JPG'] "><xsl:attribute name="align"><xsl:value-of select="@align"/></xsl:attribute>
<!-- $fname contains name of img attribute -->
<xsl:variable name="fname">
<!-- Convert 'cd345.gif' into 'CD345.GIF' -   -->
<xsl:value-of select="translate(@src, 'abcdefghijklmnopqrstuvwxyz', 'ABCDEFGHIJKLMNOPQRSTUVWXYZ')"/></xsl:variable>
<img>
<xsl:attribute name="src"><xsl:value-of select="$fname"/></xsl:attribute>
<xsl:attribute name="alt"><xsl:value-of select="@alt"/></xsl:attribute>
</img>
<br/>
</xsl:apply-templates>
 
</xsl:for-each>
</Lesson>
</xsl:template>
</xsl:stylesheet>
 
----------------------------------------------------------------------
 
AL-Intro.xml
 
<?xml version="1.0" encoding="utf-8"?>
 
<chunk type="text" name="AL-Intro"  title="Introduction">
	<versionlist>
		<version date="2007-09-10">
			
		</version>
	 </versionlist>
 
       <media type="jpg" title="test" name="germany" src="hannover_rathaus.jpg" caption="test" align="center" copyright="mzm">
	</media>
 
	<text>
		<p>Adaptive Hypermedia is an alternative to traditional hypermedia systems and aims to overcome these two problems by providing some help and guidance to the users. An adaptive Hypermedia System aims to provide a solution to the problem of disorientation and need to accommodate varied users by being capable of searching for and filtering out the information most relevant to the user's needs, goals and interests .</p>
		<p>Adaptive educational hypermedia: counterbalance lack of interpersonal interaction in distance learning - self driven learning as they can act like a personal desktop teacher. .</p>
	</text>
 
 
 
 
	<keywords>
			<keyword>e-Learning</keyword>
	</keywords>
 
</chunk>

           
         

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Question Stats

Zone: Web Development

Question Asked By: mzm_uk07

Solution Provided By: Gertone

Participating Experts: 2

Solution Grade: A

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