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| |
| <s1 title="&xslt4j; Overview"> |
| <ul> |
| <li><link anchor="intro">Introduction</link></li> |
| <li><link anchor="features">&xslt4j; Features</link></li> |
| <li><link anchor="towork">Getting to work with &xslt4j;</link></li> |
| <li><link anchor="uptospeed">Getting up to speed with XSLT</link></li> |
| <li><link anchor="glossary">Glossary</link></li> |
| </ul><anchor name="intro"/> |
| <s2 title="Introduction"> |
| <p>&xslt4j; (named after a rare musical instrument) fully implements the <resource-ref idref="xslt"/> and the |
| <resource-ref idref="xpath"/>. XSLT is the first part of the XSL stylesheet language for XML. It includes the XSL |
| Transformation vocabulary and XPath, a language for addressing parts of XML documents. For links to background materials, |
| discussion groups, frequently asked questions, and tutorials on XSLT, see <link anchor="uptospeed">Getting up |
| to speed with XSLT</link>.</p> |
| <note>XSL also includes a vocabulary for formatting documents, which is not part of &xslt4j;. |
| For more information, see <resource-ref idref="xsl"/> and the <jump |
| href="http://xml.apache.org/fop">Apache XML FOP (Formatting Objects Project)</jump>.</note> |
| <p>You use the XSLT language to compose XSL stylesheets. An XSL stylesheet contains instructions for |
| transforming XML documents from one document type into another document type (XML, HTML, or other). In structural |
| terms, an XSL stylesheet specifies the transformation of one tree of nodes (the XML input) into another tree of nodes |
| (the output or transformation result).</p> |
| <note>The XSL stylesheet may generate and refer to cascading style sheets (<jump |
| href="http://www.w3.org/Style/CSS/">CSS</jump>) as part of its output.</note> |
| <p>In the following example, the foo.xsl stylesheet is used to transform foo.xml into foo.out:</p> |
| <p>foo.xml:</p> |
| <source><?xml version="1.0"?> |
| <doc>Hello</doc></source> |
| <p>foo.xsl:</p> |
| <source><?xml version="1.0"?> |
| <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> |
| <xsl:template match="doc"> |
| <out><xsl:value-of select="."/></out> |
| </xsl:template> |
| </xsl:stylesheet></source> |
| <p>foo.out:</p> |
| <source><out>Hello</out></source> |
| <p>By default, &xslt4j; uses &xml4j;, and it may be configured with system properties to work with other XML parsers (see <link idref="usagepatterns" anchor="plug">Plugging in a Transformer and XML parser</link>). The input may be submitted in the form of a stream of XML markup (from a URI, a character or byte stream, or another transformation), a SAX InputStream, or a DOM Node.</p> |
| <p>&xslt4j; performs the transformations specified in the XSL stylesheet and packages a sequence of SAX events that may be serialized to an output stream or writer, used to build a DOM tree, or forwarded as input to another transformation.</p> |
| </s2><anchor name="features"/> |
| <s2 title="&xslt4j; Features"> |
| <ul> |
| <li>Implements the relevant W3C specifications: <resource-ref idref="xslt"/> and <resource-ref idref="xpath"/>.<br/><br/></li> |
| <li>Implements <resource-ref idref="trax"/>, now part of <resource-ref idref="jaxp"/>, and builds on |
| <resource-ref idref="sax2"/> and <resource-ref idref="dom2"/>.<br/><br/></li> |
| <li>May be configured to work with any XML parser, such |
| <jump href="http://xml.apache.org/xerces-j/index.html">&xml4j;</jump>, that implements <resource-ref |
| idref="jaxp"/> (see <link idref="usagepatterns" anchor="plug">Plugging in an XML |
| parser</link>).<br/><br/></li> |
| <li>Can process Stream, SAX or DOM input, and output to a Stream, SAX or DOM.<br/><br/></li> |
| <li>Transformations may be chained (the output of one transformation may be the input for |
| another).<br/><br/></li> |
| <li>May be run from the <link idref="commandline">command line</link> for convenient file-to-file |
| transformations.<br/><br/></li> |
| <li>Includes an <link idref="usagepatterns" anchor="applet">applet wrapper</link>.<br/><br/></li> |
| <li>May be used in a <link idref="samples" anchor="servlet">servlet</link> to transform XML documents into |
| HTML and serve the results to clients.<br/><br/></li> |
| <li>Supports the creation of <link idref="extensions">Java and scripting language extensions</link>. and |
| provides a growing library of extension elements and functions.</li> |
| </ul> |
| </s2><anchor name="towork"/> |
| <s2 title="Getting to work with &xslt4j;"> |
| <p>For instructions and some suggestions about how to get started using &xslt4j;, see |
| <link idref="getstarted">Getting Started</link>.</p> |
| </s2><anchor name="uptospeed"/> |
| |
| <s2 title="Getting up to speed with XSLT"> |
| <p>If you are still working through the details of the XSLT spec (the W3C 1.0 Recommendation), you may want |
| to consult one or more of the following:</p> |
| <ul> |
| <li>Michael Kay's <jump href="http://www.wrox.com/Consumer/Store/Details.asp?ISBN=1861003129">XSLT Programmer's |
| Reference</jump>, Wrox Press, 2000<br/><br/></li> |
| <li>Neil Bradley's XSL Companion, Addison-Wesley, 2000<br/><br/></li> |
| <li>Elliotte Rusty Harold's <jump href="http://metalab.unc.edu/xml/books/bible/updates/14.html">Chapter 14 of |
| the XML Bible: XSL Transformations</jump><br/><br/></li> |
| <li>Crane Softwright's <jump href="http://www.CraneSoftwrights.com/training/">Free preview of Practical |
| Transformation Using XSLT and XPath</jump><br/><br/></li> |
| <li>The Mulberry <jump href="http://www.mulberrytech.com/xsl/xsl-list/">XSL-List -- Open Forum on XSL</jump> |
| (of interest to XSL users at all levels)<br/><br/></li> |
| <li>Dave Pawson's <resource-ref idref="dpawsonxslfaq"/><br/><br/></li> |
| <li>Objects by Design's <jump href="http://www.objectsbydesign.com/projects/xmi_to_html.html">Transforming XMI to |
| HTML</jump> (oriented towards XMI, "an XML-based, stream representation of a UML model," but also covers "generic" |
| XML transformations)<br/><br/></li> |
| <li>Objects by Design;'s <jump href="http://objectsbydesign.com/projects/xslt/xslt_by_example.html">XSLT by |
| Example</jump><br/><br/></li> |
| <li>Miloslav Nic's <jump href="http://zvon.vscht.cz/HTMLonly/XSLTutorial/Books/Book1/index.html">XSL Tutorial</jump> |
| <br/><br/></li> |
| <li>OASIS (the Organization for the Advancement of Structured Information Standards): |
| <jump href="http://www.oasis-open.org/cover/xsl.html">Extensible Stylesheet Language (XSL)</jump> by Robin |
| Cover<br/><br/></li> |
| <li>Donald Ball's <jump href="http://www.webslingerZ.com/balld/xsl/designer_manual.xml">A Guide to XML and XSL for |
| Designers</jump><br/><br/></li> |
| <li>XSLT - XSL Transformations in |
| <jump href="http://www.brics.dk/~amoeller/XML/">The XML Revolution: Technologies for the future Web</jump> by |
| Anders Møller and Michael I. Schwartzbach</li> |
| </ul> |
| <p>When you come across other useful introductory or background materials, please email <human-resource-ref |
| idref="xalandev"/>, so we can add them to this list.</p> |
| |
| </s2><anchor name="glossary"/> |
| <s2 title="Glossary"> |
| <gloss> |
| <label>XSLT Namespace</label> |
| <item>The <jump href="http://www.w3.org/TR/REC-xml-names/">XML namespace</jump> for XSLT. An XML namespace is a |
| collection of element and attribute names, identified by a Unique Resource Identifier (URI), which often takes the form of |
| a URL, but is really just a unique string, not a pointer to a web page. The XSLT namespace URI is |
| http://www.w3.org/1999/XSL/Transform. In each XSLT stylesheet, you must declare this namespace in the stylesheet element |
| tag and bind it to a local prefix. Like the XSLT specification, we always use xsl as the XSLT namespace prefix in our |
| descriptions and examples, although you are free to bind any prefix to this namespace.<br/><br/></item> |
| |
| <label>XSL Instruction</label> |
| <item>Any tag associated with the XSLT namespace.<br/><br/></item> |
| |
| <label>Template</label> |
| <item>An element, usually with child elements, that specifies a "rule" or set of |
| instructions to perform when a particular kind of node is encountered in the source tree.<br/><br/></item> |
| |
| <label>XSL Template Instruction</label> |
| <item>Any tag that occurs inside an xsl:template element and is associated with the XSLT namespace.<br/><br/></item> |
| |
| <label>Source Tree</label> |
| <item>The XML tree input to the XSL process.<br/><br/></item> |
| |
| <label>Result Tree</label> |
| <item>The tree that is output by the XSL process.<br/><br/></item> |
| |
| <label>Match Pattern</label> |
| <item>The part of a template that defines the kind(s) of nodes to which the template applies.<br/><br/></item> |
| |
| </gloss> |
| <p>For more definitions of XSLT terminology, see Dave Pawson's |
| <jump href="http://www.dpawson.co.uk/xsl/vocab.html">XSLT Terminology |
| Clarification</jump> and the Glossary in Michael Kay's |
| <jump href="http://www.wrox.com/Consumer/Store/Details.asp?ISBN=1861003129">XSLT Programmer's Reference</jump>.</p> |
| </s2> |
| </s1> |
