Example 2 of <xsl:apply-imports>
This example demonstrates how to use <xsl:apply-imports> when you want to add to the functionality of a rule in an imported file, but you don't want to replace the rule entirely. This example uses three main files:
The books.xml sample file, slightly altered.
The sample.xsl style sheet sets the font as Arial and imports the other style sheet. When a book element is found, the Arial font is applied to the elements in the node. Then the
<xsl:apply-imports>tag applies the matching rules in the imported sample-import style sheet.The sample-import.xsl style sheet is the imported style sheet. It provides line breaks, and the formatting for bold, italic, and blue text.
XML File (books.xml)
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="sample.xsl"?>
<catalog>
<book id="bk101">
<title>XML Developer's Guide</title>
<author>Gambardella, Matthew</author>
<genre>Computer</genre>
<price>44.95</price>
<publish_date>2000-10-01</publish_date>
<description>An in-depth look at creating applications with XML.</description>
</book>
<book id="bk102">
<title>Midnight Rain</title>
<author>Ralls, Kim</author>
<genre>Fantasy</genre>
<price>5.95</price>
<publish_date>2000-12-16</publish_date>
<description>A former architect battles corporate zombies, an evil sorceress, and her own childhood to become queen of the world.</description>
</book>
<book id="bk103">
<title>Maeve Ascendant</title>
<author>Corets, Eva</author>
<genre>Fantasy</genre>
<price>5.95</price>
<publish_date>2000-11-17</publish_date>
<description>After the collapse of a nanotechnology society in England, the young survivors lay the foundation for a new society.</description>
</book>
<book id="bk104">
<title>Oberon's Legacy</title>
<author>Corets, Eva</author>
<genre>Fantasy</genre>
<price>5.95</price>
<publish_date>2001-03-10</publish_date>
<description>In post-apocalypse England, the mysterious agent known only as Oberon helps to create a new life for the inhabitants of London. Sequel to Maeve Ascendant.</description>
</book>
<book id="bk105">
<title>The Sundered Grail</title>
<author>Corets, Eva</author>
<genre>Fantasy</genre>
<price>5.95</price>
<publish_date>2001-09-10</publish_date>
<description>The two daughters of Maeve, half-sisters, battle one another for control of England. Sequel to Oberon's Legacy.</description>
</book>
<book id="bk106">
<title>Lover Birds</title>
<author>Randall, Cynthia</author>
<genre>Romance</genre>
<price>4.95</price>
<publish_date>2000-09-02</publish_date>
<description>When Carla meets Paul at an ornithology conference, tempers fly as feathers get ruffled.</description>
</book>
<book id="bk107">
<title>Splish Splash</title>
<author>Thurman, Paula</author>
<genre>Romance</genre>
<price>4.95</price>
<publish_date>2000-11-02</publish_date>
<description>A deep sea diver finds true love twenty thousand leagues beneath the sea.</description>
</book>
<book id="bk108">
<title>Creepy Crawlies</title>
<author>Knorr, Stefan</author>
<genre>Horror</genre>
<price>4.95</price>
<publish_date>2000-12-06</publish_date>
<description>An anthology of horror stories about roaches, centipedes, scorpions and other insects.</description>
</book>
<book id="bk109">
<title>Paradox Lost</title>
<author>Kress, Peter</author>
<genre>Science Fiction</genre>
<price>6.95</price>
<publish_date>2000-11-02</publish_date>
<description>After an inadvertant trip through a Heisenberg Uncertainty Device, James Salway discovers the problems of being quantum.</description>
</book>
<book id="bk110">
<title>Microsoft .NET: The Programming Bible</title>
<author>O'Brien, Tim</author>
<genre>Computer</genre>
<price>36.95</price>
<publish_date>2000-12-09</publish_date>
<description>Microsoft's .NET initiative is explored in detail in this deep programmer's reference.</description>
</book>
<book id="bk111">
<title>MSXML3: A Comprehensive Guide</title>
<author>O'Brien, Tim</author>
<genre>Computer</genre>
<price>36.95</price>
<publish_date>2000-12-01</publish_date>
<description>The Microsoft MSXML3 parser is covered in detail, with attention to XML DOM interfaces, XSLT processing, SAX and more.</description>
</book>
<book id="bk112">
<title>Visual Studio 7: A Comprehensive Guide</title>
<author>Galos, Mike</author>
<genre>Computer</genre>
<price>49.95</price>
<publish_date>2001-04-16</publish_date>
<description>Microsoft Visual Studio 7 is explored in depth, looking at how Visual Basic, Visual C++, C#, and ASP+ are integrated into a comprehensive development environment.</description>
</book>
</catalog>
Main XSLT File (sample.xsl)
<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:import href="sample-import.xsl"/>
<xsl:output method="html"/>
<xsl:template match="book">
<font face="Arial">
<xsl:apply-imports/>
</font>
</xsl:template>
</xsl:stylesheet>
Imported XSLT File (sample-import.xsl)
<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<!-- Override built-in template. -->
<xsl:template match="text()"/>
<xsl:template match="/">
<html>
<body>
<xsl:apply-templates/>
</body>
</html>
</xsl:template>
<xsl:template match="book">
<i>
<xsl:apply-templates select="title"/>
</i>
<xsl:text> By: </xsl:text>
<xsl:apply-templates select="author"/>
<br/>
</xsl:template>
<xsl:template match="title">
<b>
<xsl:value-of select="."/>
</b>
</xsl:template>
<xsl:template match="author">
<font color="blue">
<xsl:value-of select="."/>
</font>
</xsl:template>
</xsl:stylesheet>
Output
This is the formatted output:
.gif "Formatted output")
This is the processor output:
<html>
<body>
<font face="Arial"><i><b>XML Developer's Guide</b></i> By: <font color="blue">Gambardella, Matthew</font><br></font>
<font face="Arial"><i><b>Midnight Rain</b></i> By: <font color="blue">Ralls, Kim</font><br></font>
...
<font face="Arial"><i><b>Visual Studio 7: A Comprehensive Guide</b></i> By: <font color="blue">Galos, Mike</font><br></font>
</body>
</html>