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Introduction to XSLT
By Ed Rosenthal And Dave Pion
Brief Primer on XML
What is XSLT?
How Does XSLT Relate to XML?
• XSLT is well formed XML.– Only need to learn new syntax to learn XSLT
(if you know XML)
• Transforms XML documents– From one DTD to another
• DTD – document type definition– To learn how to write DTD’s you had to learn
new structures.
• Uses XPath to match patterns in XML
History of XSLT
•XSLT is part of XSL specification
•Expanded into separate specification
•Relies on XPath for some of its functionality
Why Use XSLT?
• W3C Standard
• Open Source
• Can add functionality to program without recompiling
• Rapid development & ease of code reuse
• XSLT is XML
Alternatives to XSLT
• XML Libraries such as SAX used in conjunction with general purpose programming language such as Java
• Custom programming solution
• Tighter integration with business partners, e.g., work with common DTD / Schema
Example XSLT Stylesheet
<?xml version="1.0" encoding="UTF-8"?><xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:template match="type"><brew>
<xsl:apply-templates/></brew>
</xsl:template><xsl:template match="price"/><!-- All other elements --><xsl:template match="*|@*|text()">
<xsl:copy><xsl:apply-templates select="*|@*|
text()"/></xsl:copy>
</xsl:template></xsl:stylesheet>
<?xml version="1.0" encoding="UTF-8"?><beer color="dark">
<product>Sam Adams</product><type>ale</type><price>6.99</price>
</beer>
Input File
Output File
<?xml version="1.0" encoding="UTF-16"?><beer color="dark">
<product>Sam Adams</product><brew>ale</brew>
</beer>
XSLT File
Demonstration
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