This document provides summaries of key concepts in XPath and XSLT including: - XPath location paths for selecting nodes - XPath operators for comparing and combining expressions - XSLT functions for manipulating nodes and values - Common XSLT elements for transforming XML documents like apply-templates, template, and value-of.

1. Location Paths [XPath §2] XPath Operators XSLT Functions [§12, §15]
Optional ‘/’, zero or more location steps, separated by ‘/’ node-set document(object, node-set?)
Parentheses may be used for grouping.
node-set key(string, object)
Location Steps [XPath §2.1] Node-sets [XPath §3.3] string format-number(number, string, string ?)
Axis specifier , node test, zero or more predicates
Axis Specifiers [XPath §2.2]
| [expr] / //
XSLT 1.0 node-set current()
string unparsed-entity-uri(string)
Boolea ns [XPath §3.4]
ancestor::
ancestor-or-self::
following-sibling::
namespace::
<=, <, >=, > =, != and or & string generate-id(node-set?)
object system-property(string)
Numbers [XPath §3.5] boolean element-available(string)
attribute::
child::
parent::
preceding:: -expr *, div, mod +, - XPath 1.0 boolean function-available(string)
descendant:: preceding-sibling::
descendant-or-self::
following::
self::
XPath Core Function Library Quick Reference Node Types [XPath §5]
Root Processing Instruction
Element Comment
Node Tests [XPath §2.3] Node Set Functions [XPath §4.1] Attribute Text
name node() number last() Namespace
prefix:name text() number position()
* comment() number count(node-set) Object Types [§11.1, XPath §1]
prefix:* processing-instruction() node-set id(object)
string local-name(node-set?) boolean True or false
processing-
instruction(literal) string namespace-uri(node-set?) number Floating-point number
string name(node-set?)
Abbreviated Syntax for Location Paths string UCS characters
String Functio ns [XPath §4.2] node-set Set of nodes selected by a path
(nothing) child:: string string(object?)
string concat(string, string, string*) Result tree XSLT only. Fragment of the result tree
@ attribute::
boolean starts-with(string, string) fragment
// /descendant-or-self::node()/ boolean contains(string, string)
. self::node() string substring-before(string, string) Expression Context [§4, XPath §1]
string substring-after(string, string) Context node (a node)
.. parent::node()
string substring(string, number, number?) Context position (a number)
/ Node tree root number string-length(string?) Context size (a number)
Mulberry Technologies, Inc.
string normalize-space(string ?) Variable bindings in scope
Predicate [XPath §2.4] string translate(string, string, string)
17 West Jefferson Street, Suite 207
Rockville, MD 20850 USA Namespace declarations in scope
[expr]
Function library
Variable Reference [XPath §3.7] Boolea n Functions [XPath §4.3] Phone: +1 301/315-9631
boolean boolean(object) Fax: +1 301/315-8285
$qname info@mulberrytech.com
Built-in Template Rules [§5.8]
boolean not(object) <xsl:template match="*|/">
Literal Result Elements [§7.1.1] boolean true() http://www.mulberrytech.com
<xsl:apply-templates/>
Any element not in the xsl: namespace and not an extension boolean false() </xsl:template>
element boolean lang(string)
<xsl:template match="*|/" mode="m">
Number Functions [XPath §4.4] <xsl:apply-templates mode="m"/>
number number(object?) </xsl:template>
XSLT number sum(node-set)
http://www.w3.org/TR/xslt <xsl:template match="text()|@*">
number floor(number) <xsl:value-of select="."/>
XPath number ceiling(number) </xsl:template>
http://www.w3.org/TR/xpath number round(number)
<xsl:template
XSL-List match="processing-instruction()|comment()"/>
http://www.mulberrytech.com/xsl/xsl-list/ Built-in template rule for namespaces is to do nothing
© 2000 Mulberry Technologies, Inc. © 2000 Mulberry Technologies, Inc. (20051123) © 2000 Mulberry Technologies, Inc.

2. XSLT Elements Creating Attributes [§7.1.3] Sorting [§10] Key
<xsl:attribute name="{qname}" <xsl:sort select="string-expr" lang="{nmtoken}" xsl:stylesheet
Styleshe et Element [§2.2] Element
namespace="{uri-reference}">...</xsl:attribute> data-type="{text|number|qname-but-not-
<xsl:stylesheet version="1.0" id="id" ncname}" order="{ascending|descending}" version= Required attribute
extension-element-prefixes="tokens" Named Attribute Sets [§7.1.4] case-order="{upper-first|lower-first}"/> version= Optional attribute
exclude-result-prefixes="tokens" <xsl:attribute-set name="qname"
xmlns:xsl="http://www.w3.org/1999/XSL/ use-attribute-sets="qnames"> Variables and Parameters [§11] {expr} Attribute value template. Text between
Transform"> xsl:import*, top-level elements xsl:attribute* </xsl:attribute-set> <xsl:variable name="qname" select="expr"/> any { and } is evaluated as an
</xsl:stylesheet> <xsl:variable name="qname">...</xsl:variable> expression. Attribute value must
Creating Text [§7.2]
<xsl:text disable-output-escaping="yes|no"> <xsl:param name="qname" select="expr"/> evaluate to indicated attribute type.
xsl:transform is a synonym for xsl:stylesheet
#PCDATA </xsl:text> <xsl:param name="qname">...</xsl:param> … Anything allowed in a template
Combining Styleshe ets [§2.6] |
Processing Instructions [§7.3] Using Values [§11.3] Separates alternative values
<xsl:include href="uri-reference"/>
<xsl:processing-instruction name="{ncname}"> <xsl:copy-of select="expr"/> ? Zero or one occurrences
<xsl:import href="uri-reference"/>
...</xsl:processing-instruction> Passing Parameters [§11.6] * Zero or more occurrences
Whitespace Stripping [§3.4] Creating Comm ents [§7.4] <xsl:with-param name="expr" select="expr"/> + One or more occurrences
<xsl:strip-space elements="tokens"/> <xsl:with-param name="expr">...</xsl:with-
<xsl:comment>...</xsl:comment> #PCDATA Character data
<xsl:preserve-space elements="tokens"/> param>
Copying [§7.5] Attribute Value Types
Defining Template Rules [§5.3] <xsl:copy use-attribute-sets="qnames"> Keys [§12.2]
<xsl:template match="pattern" name="qname" ...</xsl:copy> <xsl:key name="qname" match="pattern" 1.0 Literal value
priority="number" mode="qname"> use="expr"/> boolean-expr Expression returning boolean value
xsl:param* followed by text, literal result elements Gen erating Text [§7.6.1]
<xsl:value-of select="string-expr" Number Formatting [§12.3] char Single character
and/or XSL elements </xsl:template>
disable-output-escaping="yes|no"/> <xsl:decimal-format name="qname" expr Expression
Applying Template Rules [§5.4] decimal-separator="char"
<xsl:apply-templates select="node-set-exp" Attribute Value Templates [§7.6.2] grouping-separator="char" infinity="string" id XML name used as identifier
mode="qname"/> <element attribute="{expr}"/> minus-sign="char" NaN="string" ncname XML name not containing a colon (:)
<xsl:apply-templates select="node-set-exp" Numbering [§7.7] percent="char" per-mille="char" node-set-expr Expression returning a node set
mode="qname"> <xsl:number level="single|multiple|any" zero-digit="char" digit="char"
number-expr Expression returning a number
(xsl:sort | xsl:with-param)* </xsl:apply-templates> count="pattern" from="pattern" pattern-separator="char"/>
pattern XSLT pattern
Overriding Template Rules [§5.6] value="number-expr" format="{string}" Messag es [§13]
lang="{nmtoken}" prefix Namespace prefix
<xsl:apply-imports/> <xsl:message terminate="yes|no">
letter-value="{alphabetic|traditional}" ...</xsl:message> qname Namespace-qualified XML name
Named Templates [§6] grouping-separator="{char}" comprising local part and optional
<xsl:call-template name="qname"/> grouping-size="{number}"/> Fallback [§15] prefix
<xsl:call-template name="qname"> <xsl:fallback>...</xsl:fallback>
xsl:with-param* </xsl:call-template>
Repetition [§8] qname-but-not- Namespace-qualified name comprising
<xsl:for-each select="node-set-expr"> O utput [§16] ncname local part and prefix
Namespace Alias [§7.1.1] xsl:sort*, ...</xsl:for-each> <xsl:output token Meaning varies with context. See Rec.
<xsl:namespace-alias result- method="xml|html|text|qname-but-not-ncname"
prefix="prefix|#default"
Co nditional Processing [§9] version="nmtoken" encoding="string" uri-reference Reference to Universal Resource
stylesheet-prefix="prefix|#default"/> <xsl:if test="boolean-expr">...</xsl:i f> omit-xml-declaration="yes|no" Identifier
<xsl:choose> doctype-public="string" doctype-
Creating Elements [§7.1.2] <xsl:when test="expr">...</xsl:when> + system="string" standalone="yes|no"
<xsl:element name="{qname}" <xsl:otherwise>...</xsl:otherwise> ? indent="yes|no"
namespace="{uri-reference}" </xsl:choose> cdata-section-elements="qnames"
use-attribute-sets="qnames">...</xsl:element> media-type="string"/>
© 2000 Mulberry Technologies, Inc. © 2000 Mulberry Technologies, Inc. © 2000 Mulberry Technologies, Inc. © 2000 Mulberry Technologies, Inc.