book

Beginning XSLT and XPath: Transforming XML Documents and Data

Name: Beginning XSLT and XPath: Transforming XML Documents and Data
Author: Ian Williams
ISBN: 9780470477250

by Ian Williams

September 2009

Beginner

431 pages

8h 36m

English

Wrox

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Copyright
About the Author
Credits
Introduction
Who This Book Is ForXSLT in OutlineXSLT Is DifferentImportance of XPath LanguageNode TreesProcessing OverviewAbout the XSLT 2.0 SchemaDeclarationsInstructionsWhat You Need to Use This BookChoosing a ProcessorInterface OptionsHow This Book Is StructuredConventionsSource CodeErratap2p.wrox.com
1. First Steps with XSLT
1.1. Transforming an XML Document to a Web Page1.1.1. Using a Browser1.1.1.1. Built-in Rules1.1.1.2. Defining an Output Method1.1.1.3. Main Template1.1.1.4. Literal Result Elements1.1.1.5. Selecting Source Content1.1.1.6. Processing Specific Source Elements1.1.1.7. Copying Content1.1.2. Transforming Locally1.1.2.1. Using the Command Line1.2. Transforming XML Data to XML1.2.1. Atom and RSS Elements1.2.2. Developing the Stylesheet1.2.2.1. Preliminaries1.2.2.2. Specifying Attributes1.2.2.3. Completing the Feed Elements1.2.2.4. Item Listing1.2.2.5. Entry Elements1.2.2.6. RSS 1.0 Results1.3. Summary
2. Introducing XPath
2.1. Nodes2.1.1. Node Types2.1.2. Node Properties2.2. Data Model2.3. Path Expressions2.3.1. Using an XPath Analyzer2.3.2. Axes2.3.3. Node Tests2.3.3.1. Name Tests2.3.3.2. Type Tests2.3.4. Predicates2.3.5. Operators2.3.5.1. Arithmetic2.3.5.2. Value Comparison2.3.5.3. General Comparison2.3.5.4. Boolean Expressions2.3.5.5. Combining Node Sets2.4. XPath Functions2.4.1. Strings2.4.1.1. Concatenation2.4.1.2. Substrings2.4.2. Dates, Times, and Durations2.4.2.1. Contextual Dates2.4.2.2. Formatting2.4.2.3. Durations2.4.3. Nodes and Documents2.4.3.1. Node Properties2.4.3.2. Counting and Position2.4.3.3. Documents2.4.4. Numbers2.5. Summary2.6. Exercises
3. Templates, Variables, and Parameters
3.1. About Templates3.2. Template Rules3.2.1. Invoking a Rule3.2.2. Using Modes3.2.3. Setting Priorities3.2.4. Built-in Rules3.3. Named Templates3.4. Variables3.5. Parameters3.5.1. Global Parameters3.5.2. Template Parameters3.5.2.1. Tunnel Parameters3.6. Summary3.7. Exercises
4. Using Logic
4.1. Conditional Processing4.1.1. A Simple Choice4.1.2. Multiple Choices4.1.3. Using XPath for Conditional Tests4.2. Iteration4.2.1. Using Attribute Sets4.2.2. Monitoring the Context4.3. Processing XML Code4.4. Summary4.5. Exercises
5. Sorting and Grouping
5.1. Sorting Content5.1.1.5.1.1.1. Datatypes5.1.1.2. Language Settings5.1.2. Perform a Sort5.2. Grouping5.2.1. Common Values5.2.2. Adjacent Items5.2.3. Starting and Ending Conditions5.2.3.1. Starting5.2.3.2. Ending5.3. Summary5.4. Exercises
6. Strings, Numbers, Dates, and Times
6.1. String Processing6.1.1. About Collations6.1.2. General Functions6.1.3. Codepoints6.1.4. Comparison6.1.5. Concatenation6.1.6. Simple Substrings6.1.7. Using Regular Expressions6.1.7.1. Expression Basics6.1.7.2. Matching6.1.7.3. Tokenizing6.1.7.4. Replacing6.1.8. Normalizing Values6.1.8.1. Whitespace6.1.8.2. Unicode Values6.1.9. Escaping URIs6.2. Numbers6.2.1. Generating Numbers6.2.1.1. Format Attribute Tokens6.2.1.2. Single-Level Numbers6.2.1.3. Multiple-Level Numbers6.2.2. Formatting Source Numbers6.2.2.1. Converting a Number6.2.2.2. Declaring a Format6.3. Dates and Times6.3.1. Contextual Dates6.3.2. Formatting6.3.2.1. Picture Strings6.3.2.2. Date-Formatting Tokens6.3.2.3. Language, Calendar, and Country6.3.3. Combining and Converting Values6.3.4. Durations6.3.5. Time zones6.4. Summary6.5. Exercises

7. Multiple Documents
7.1. Modular Stylesheets7.1.1. Including Modules7.1.1.1. Creating Modules7.1.1.2. A Datetime Module7.1.2. Imported Stylesheets7.1.2.1. Global Parameters7.1.2.2. Templates7.1.2.3. Activating an Imported Rule7.1.2.4. Using <xsl:next-match>7.2. Source Documents7.2.1. Using the document() Function7.2.2. XPath Alternatives7.2.2.1. The doc() Function7.2.2.2. The collection() Function7.2.3. Setting or Changing Context7.3. Output Documents7.3.1. Preparing a Feed Update7.3.2. Splitting a Document7.4. Summary7.5. Exercises
8. Processing Text
8.1. Controlling Whitespace8.1.1. Stripping Space8.1.2. Preserving Space8.1.3. Using <xsl:text>8.2. XML to Text8.3. Text to XML8.3.1. Loading Unparsed Text8.3.2. Analyzing the Input8.4. Alternatives to XSLT8.4.1. XML Maps8.4.2. XML Data in Excel8.5. Summary8.6. Exercises
9. Identifiers and Keys
9.1. ID Datatypes9.2. Using the id() Function9.3. Keys9.3.1. The key() Function9.4. Generating Identifiers9.4.1. Indexing Lines9.4.2. Census to GEDCOM XML9.5. Summary9.6. Exercises
10. Debugging, Validation, and Documentation
10.1. Debugging XSLT10.1.1. Profiling10.1.2. Verifying XHTML Output10.1.3. Using Messages10.1.4. Commenting Output10.1.5. Using the error() Function10.2. Type and Schema Validation10.2.1. Types in XSLT10.2.2. Using a Schema-Aware Processor10.2.2.1. Importing Type Definitions10.2.2.2. Validating XSLT Output10.2.2.3. Specifying User-Defined Types10.2.2.4. Source-Document Validation10.2.2.5. Validating Elements and Attributes10.2.2.6. Conditional Validation10.3. Documenting Your Stylesheets10.4. Summary10.5. Exercises
11. A Case Study
11.1. Schema Overview11.2. Common Elements and Attributes11.2.1. Common Attributes11.2.2. Block Elements11.2.3. Inline Elements11.3. The Quick-Reference Schema11.3.1. Link Container Elements11.3.2. Property Elements11.3.3. Link Verification11.4. Metadata Schemas11.4.1. Resource Metadata11.4.1.1. Collection11.4.1.2. Language Values11.4.1.3. Identifiers11.4.1.4. Authors and Contributors11.4.1.5. Dates11.4.1.6. Content11.4.2. Subject Metadata11.5. Reference Stylesheets11.6. Link Module11.6.1. Link Parameters11.6.1.1. Labeling Headings11.6.1.2. Scheme Selection11.6.2. Function Module11.7. Term Module11.7.1. Term Parameters11.7.2. Displaying Inline Terms11.8. Building the Site11.8.1. Generating the Reference Pages11.8.1.1. Navigation Tabs11.8.1.2. Table of Contents11.8.1.3. Content Section11.8.1.4. Function-Reference Pages11.8.2. Landing and Glossary Pages11.8.3. Creating a Sitemap11.9. Summary
A. Answers to Exercises
A.1. Chapter 1A.2. Chapter 2A.2.1. Question 1A.2.1.1. SolutionA.2.2. Question 2A.2.2.1. SolutionA.2.3. Question 3A.2.3.1. SolutionA.3. Chapter 3A.3.1. Question 1A.3.1.1. SolutionA.3.2. Question 2A.3.2.1. SolutionA.4. Chapter 4A.4.1. Question 1A.4.1.1. SolutionA.4.2. Question 2A.4.2.1. SolutionA.5. Chapter 5A.5.1. Question 1A.5.1.1. SolutionA.5.2. Question 2A.5.2.1. SolutionA.5.3. Question 3A.5.3.1. SolutionA.6. Chapter 6A.6.1. Question 1A.6.1.1. SolutionA.6.2. Question 2A.6.2.1. SolutionA.6.3. Question 3A.6.3.1. SolutionA.7. Chapter 7A.7.1. Question 1A.7.1.1. SolutionA.7.2. Question 2A.7.2.1. SolutionA.7.3. Question 3A.7.3.1. SolutionA.7.4. Question 4A.7.4.1. SolutionA.8. Chapter 8A.8.1. Question 1A.8.1.1. SolutionA.8.2. Question 2A.8.2.1. SolutionA.8.3. Question 3A.8.3.1. SolutionA.9. Chapter 9A.9.1. Question 1A.9.1.1. SolutionA.9.2. Question 2A.9.2.1. SolutionA.9.3. Question 3A.9.3.1. SolutionA.10. Chapter 10A.10.1. Question 1A.10.1.1. SolutionA.10.2. Question 2A.10.2.1. SolutionA.11. Chapter 11
B. Extending XSLT
B.1. Stylesheet FunctionsB.1.1. Calling an Extension FunctionB.2. Function LibrariesB.2.1. EXSLTB.2.2. FunctXB.3. Vendor ExtensionsB.3.1.B.3.1.1. EXSLT ModulesB.3.1.2. FunctionsB.3.1.3. InstructionsB.3.1.4. AttributesB.3.1.5. Serialization ParametersB.4. User-Defined Extensions
C. XSLT Processing Model
C.1. The Data ModelC.2. TransformingC.2.1. Parsing InputsC.2.2. Template RulesC.2.3. Variables and ParametersC.2.4. Controlling ProcessingC.2.5. Outputs and Serialization
D. XSLT 2.0 Quick Reference
D.1. ElementsD.1.1. Attribute GroupsD.1.2. TypesD.1.3. FunctionsD.2. XSLT ElementsD.2.1. xsl:analyze-stringD.2.1.1. PurposeD.2.1.2. UsageD.2.1.3. ContainsD.2.1.4. In substitution groupD.2.1.5. AttributesD.2.1.6. Attribute groupD.2.2. xsl:apply-importsD.2.2.1. PurposeD.2.2.2. UsageD.2.2.3. ContainsD.2.2.4. In substitution groupD.2.2.5. Attribute groupD.2.2.6. See alsoD.2.3. xsl:apply-templatesD.2.3.1. PurposeD.2.3.2. UsageD.2.3.3. ContainsD.2.3.4. In substitution groupD.2.3.5. AttributesD.2.3.6. Attribute groupD.2.4. xsl:attributeD.2.4.1. PurposeD.2.4.2. UsageD.2.4.3. ContainsD.2.4.4. In substitution groupD.2.4.5. AttributesD.2.4.6. Attribute groupD.2.5. xsl:attribute-setD.2.5.1. PurposeD.2.5.2. UsageD.2.5.3. ContainsD.2.5.4. In substitution groupD.2.5.5. AttributesD.2.5.6. Attribute groupD.2.6. xsl:call-templateD.2.6.1. PurposeD.2.6.2. UsageD.2.6.3. ContainsD.2.6.4. In substitution groupD.2.6.5. AttributeD.2.6.6. Attribute groupD.2.6.7. See alsoD.2.7. xsl:character-mapD.2.7.1. PurposeD.2.7.2. UsageD.2.7.3. ContainsD.2.7.4. In substitution groupD.2.7.5. AttributesD.2.7.6. Attribute groupD.2.7.7. See alsoD.2.8. xsl:chooseD.2.8.1. PurposeD.2.8.2. UsageD.2.8.3. ContainsD.2.8.4. In substitution groupD.2.8.5. Attribute groupD.2.8.6. See alsoD.2.9. xsl:commentD.2.9.1. PurposeD.2.9.2. UsageD.2.9.3. In substitution groupD.2.9.4. AttributeD.2.9.5. Attribute groupD.2.10. xsl:copyD.2.10.1. PurposeD.2.10.2. UsageD.2.10.3. In substitution groupD.2.10.4. AttributesD.2.10.5. Attribute groupD.2.10.6. See alsoD.2.11. xsl:copy-ofD.2.11.1. PurposeD.2.11.2. UsageD.2.11.3. In substitution groupD.2.11.4. AttributesD.2.11.5. Attribute groupD.2.11.6. See alsoD.2.12. xsl:decimal-formatD.2.12.1. PurposeD.2.12.2. UsageD.2.12.3. Contained byD.2.12.4. AttributesD.2.12.5. Attribute groupD.2.12.6. See alsoD.2.13. xsl:declarationD.2.13.1. PurposeD.2.13.2. UsageD.2.13.3. SubstituteD.2.14. xsl:documentD.2.14.1. PurposeD.2.14.2. UsageD.2.14.3. In substitution groupD.2.14.4. Attribute groupD.2.14.5. See alsoD.2.15. xsl:elementD.2.15.1. PurposeD.2.15.2. UsageD.2.15.3. In substitution groupD.2.15.4. AttributesD.2.15.5. Attribute groupD.2.16. xsl:fallbackD.2.16.1. PurposeD.2.16.2. UsageD.2.16.3. In substitution groupD.2.16.4. See alsoD.2.17. xsl:for-eachD.2.17.1. PurposeD.2.17.2. UsageD.2.17.3. ContainsD.2.17.4. In substitution groupD.2.17.5. AttributeD.2.17.6. Attribute groupD.2.18. xsl:for-each-groupD.2.18.1. PurposeD.2.18.2. UsageD.2.18.3. ContainsD.2.18.4. In substitution groupD.2.18.5. AttributesD.2.18.6. Attribute groupD.2.18.7. See alsoD.2.19. xsl:functionD.2.19.1. PurposeD.2.19.2. UsageD.2.19.3. ContainsD.2.19.4. In substitution groupD.2.19.5. AttributesD.2.19.6. Attribute groupD.2.20. xsl:ifD.2.20.1. PurposeD.2.20.2. UsageD.2.20.3. ContainsD.2.20.4. In substitution groupD.2.20.5. AttributeD.2.20.6. Attribute groupD.2.20.7. See alsoD.2.21. xsl:importD.2.21.1. PurposeD.2.21.2. UsageD.2.21.3. Contained byD.2.21.4. In substitution groupD.2.21.5. AttributeD.2.21.6. Attribute groupD.2.21.7. See alsoD.2.22. xsl:import-schemaD.2.22.1. PurposeD.2.22.2. UsageD.2.22.3. In substitution groupD.2.22.4. AttributesD.2.22.5. Attribute groupD.2.23. xsl:includeD.2.23.1. PurposeD.2.23.2. UsageD.2.23.3. In substitution groupD.2.23.4. AttributeD.2.23.5. Attribute groupD.2.23.6. See alsoD.2.24. xsl:instructionD.2.24.1. PurposeD.2.24.2. UsageD.2.24.3. SubstituteD.2.25. xsl:keyD.2.25.1. PurposeD.2.25.2. UsageD.2.25.3. ContainsD.2.25.4. In substitution groupD.2.25.5. AttributesD.2.25.6. Attribute groupD.2.25.7. See alsoD.2.26. xsl:matching-substringD.2.26.1. PurposeD.2.26.2. UsageD.2.26.3. ContainsD.2.26.4. Contained byD.2.26.5. Attribute groupD.2.26.6. See alsoD.2.27. xsl:messageD.2.27.1. PurposeD.2.27.2. UsageD.2.27.3. ContainsD.2.27.4. In substitution groupD.2.27.5. AttributesD.2.27.6. Attribute groupD.2.27.7. See alsoD.2.28. xsl:namespaceD.2.28.1. PurposeD.2.28.2. UsageD.2.28.3. ContainsD.2.28.4. In substitution groupD.2.28.5. AttributesD.2.28.6. Attribute groupD.2.29. xsl:namespace-aliasD.2.29.1. PurposeD.2.29.2. UsageD.2.29.3. In substitution groupD.2.29.4. AttributesD.2.29.5. Attribute groupD.2.30. xsl:next-matchD.2.30.1. PurposeD.2.30.2. UsageD.2.30.3. ContainsD.2.30.4. In substitution groupD.2.30.5. Attribute groupsD.2.30.6. See alsoD.2.31. xsl:non-matching-substringD.2.31.1. PurposeD.2.31.2. UsageD.2.31.3. ContainsD.2.31.4. Contained byD.2.31.5. Attribute groupD.2.31.6. See alsoD.2.32. xsl:numberD.2.32.1. PurposeD.2.32.2. UsageD.2.32.3. ContainsD.2.32.4. In substitution groupD.2.32.5. AttributesD.2.32.6. Attribute groupD.2.32.7. See alsoD.2.33. xsl:otherwiseD.2.33.1. PurposeD.2.33.2. ContainsD.2.33.3. Contained byD.2.33.4. Attribute groupD.2.34. xsl:outputD.2.34.1. PurposeD.2.34.2. UsageD.2.34.3. In substitution groupD.2.34.4. AttributesD.2.34.5. Attribute groupD.2.35. xsl:output-characterD.2.35.1. PurposeD.2.35.2. Contained byD.2.35.3. AttributesD.2.35.4. Attribute groupD.2.36. xsl:paramD.2.36.1. PurposeD.2.36.2. UsageD.2.36.3. ContainsD.2.36.4. Contained byD.2.36.5. AttributesD.2.36.6. Attribute groupD.2.36.7. See alsoD.2.37. xsl:perform-sortD.2.37.1. PurposeD.2.37.2. UsageD.2.37.3. ContainsD.2.37.4. AttributeD.2.37.5. Attribute groupD.2.38. xsl:preserve-spaceD.2.38.1. PurposeD.2.38.2. UsageD.2.38.3. In substitution groupD.2.38.4. AttributeD.2.38.5. Attribute groupD.2.38.6. See alsoD.2.39. xsl:processing-instructionD.2.39.1. PurposeD.2.39.2. UsageD.2.39.3. In substitution groupD.2.39.4. AttributesD.2.39.5. Attribute groupD.2.40. xsl:result-documentD.2.40.1. PurposeD.2.40.2. UsageD.2.40.3. ContainsD.2.40.4. In substitution groupD.2.40.5. AttributesD.2.40.6. Attribute groupD.2.41. xsl:sequenceD.2.41.1. PurposeD.2.41.2. UsageD.2.41.3. ContainsD.2.41.4. In substitution groupD.2.41.5. AttributeD.2.41.6. Attribute groupD.2.42. xsl:sortD.2.42.1. PurposeD.2.42.2. UsageD.2.42.3. ContainsD.2.42.4. Contained byD.2.42.5. AttributesD.2.42.6. Attribute groupD.2.43. xsl:strip-spaceD.2.43.1. PurposeD.2.43.2. UsageD.2.43.3. In substitution groupD.2.43.4. AttributeD.2.43.5. Attribute groupD.2.43.6. See alsoD.2.44. xsl:stylesheetD.2.44.1. PurposeD.2.44.2. UsageD.2.44.3. In substitution groupD.2.45. xsl:templateD.2.45.1. PurposeD.2.45.2. UsageD.2.45.3. ContainsD.2.45.4. In substitution groupD.2.45.5. AttributesD.2.45.6. Attribute groupD.2.45.7. See alsoD.2.46. xsl:textD.2.46.1. PurposeD.2.46.2. UsageD.2.46.3. In substitution groupD.2.46.4. AttributeD.2.46.5. Attribute groupD.2.47. xsl:transformD.2.47.1. PurposeD.2.47.2. UsageD.2.47.3. ContainsD.2.47.4. AttributesD.2.47.5. Attribute groupD.2.48. xsl:value-ofD.2.48.1. PurposeD.2.48.2. UsageD.2.48.3. ContainsD.2.48.4. In substitution groupD.2.48.5. AttributesD.2.48.6. Attribute groupD.2.49. xsl:variableD.2.49.1. PurposeD.2.49.2. UsageD.2.49.3. ContainsD.2.49.4. Contained byD.2.49.5. AttributesD.2.49.6. Attribute groupD.2.50. xsl:with-paramD.2.50.1. PurposeD.2.50.2. UsageD.2.50.3. ContainsD.2.50.4. Contained byD.2.50.5. AttributesD.2.50.6. Attribute groupD.2.50.7. See alsoD.3. Attribute GroupsD.3.1. Generic element attributesD.3.1.1. PurposeD.3.1.2. AttributesD.3.2. Version attributesD.3.2.1. PurposeD.3.2.2. AttributeD.3.3. Validation attributesD.3.3.1. PurposeD.3.3.2. UsageD.3.3.3. AttributesD.4. TypesD.5. XSLT FunctionsD.5.1. currentD.5.1.1. PurposeD.5.1.2. SignatureD.5.2. current-groupD.5.2.1. PurposeD.5.2.2. SignatureD.5.2.3. See alsoD.5.3. current-grouping-keyD.5.3.1. PurposeD.5.3.2. SignatureD.5.3.3. See alsoD.5.4. documentD.5.4.1. PurposeD.5.4.2. SignatureD.5.4.3. ParametersD.5.4.4. See alsoD.5.5. element-availableD.5.5.1. PurposeD.5.5.2. SignatureD.5.5.3. ParameterD.5.6. format-date, format-dateTime, format-time,D.5.6.1. PurposeD.5.6.2. SignatureD.5.6.3. ParametersD.5.7. format-numberD.5.7.1. PurposeD.5.7.2. SignatureD.5.7.3. ParametersD.5.8. function-availableD.5.8.1. PurposeD.5.8.2. SignatureD.5.8.3. ParametersD.5.9. generate-idD.5.9.1. PurposeD.5.9.2. SignatureD.5.9.3. ParameterD.5.10. keyD.5.10.1. PurposeD.5.10.2. SignatureD.5.10.3. ParametersD.5.10.4. See alsoD.5.11. regex-groupD.5.11.1. PurposeD.5.11.2. SignatureD.5.11.3. ParameterD.5.11.4. See alsoD.5.12. system-propertyD.5.12.1. PurposeD.5.12.2. SignatureD.5.12.3. ParameterD.5.13. type-availableD.5.13.1. PurposeD.5.13.2. SignatureD.5.13.3. ParameterD.5.14. unparsed-text, unparsed-text-availableD.5.14.1. PurposeD.5.14.2. SignatureD.5.14.3. ParametersD.5.14.4. See alsoD.5.15. unparsed-entity-public-id, unparsed-entity-uriD.5.15.1. PurposeD.5.15.2. SignatureD.5.15.3. Parameter
E. XSLT 2.0 Schema
E.1. W3C® Document License
F. XPath 2.0 Function Reference
F.1. FunctionsF.1.1. absF.1.1.1. PurposeF.1.1.2. SignatureF.1.1.3. ParameterF.1.2. avgF.1.2.1. PurposeF.1.2.2. SignatureF.1.2.3. ParameterF.1.3. adjust-date-to-timezone, adjust-dateTime-to-timezone, adjust-time-to-timezoneF.1.3.1. PurposeF.1.3.2. SignatureF.1.3.3. ParametersF.1.3.4. See alsoF.1.4. base-uriF.1.4.1. PurposeF.1.4.2. SignatureF.1.4.3. ParameterF.1.5. booleanF.1.5.1. PurposeF.1.5.2. SignatureF.1.5.3. ParameterF.1.6. ceilingF.1.6.1. PurposeF.1.6.2. SignatureF.1.6.3. ParameterF.1.6.4. See alsoF.1.7. codepoint-equalF.1.7.1. PurposeF.1.7.2. SignatureF.1.7.3. ParameterF.1.8. codepoints-to-stringF.1.8.1. PurposeF.1.8.2. SignatureF.1.8.3. ParameterF.1.9. collectionF.1.9.1. PurposeF.1.9.2. SignatureF.1.9.3. ParameterF.1.10. compareF.1.10.1. PurposeF.1.10.2. SignatureF.1.10.3. ParametersF.1.11. concatF.1.11.1. PurposeF.1.11.2. SignatureF.1.11.3. ParameterF.1.12. countF.1.12.1. PurposeF.1.12.2. SignatureF.1.12.3. ParameterF.1.12.4. See alsoF.1.13. current-date, current-dateTime, current-timeF.1.13.1. PurposeF.1.13.2. SignatureF.1.14. dataF.1.14.1. PurposeF.1.14.2. SignatureF.1.14.3. ParameterF.1.15. dateTimeF.1.15.1. PurposeF.1.15.2. SignatureF.1.15.3. ParametersF.1.16. day-from-date, day-from-dateTimeF.1.16.1. PurposeF.1.16.2. SignatureF.1.16.3. ParameterF.1.17. days-from-durationF.1.17.1. PurposeF.1.17.2. SignatureF.1.17.3. ParameterF.1.18. deep-equalF.1.18.1. PurposeF.1.18.2. SignatureF.1.18.3. ParametersF.1.19. default-collationF.1.19.1. PurposeF.1.19.2. SignatureF.1.20. distinct-valuesF.1.20.1. PurposeF.1.20.2. SignatureF.1.20.3. ParametersF.1.21. doc, doc-availableF.1.21.1. PurposeF.1.21.2. SignatureF.1.21.3. ParameterF.1.22. document-uriF.1.22.1. PurposeF.1.22.2. SignatureF.1.22.3. ParameterF.1.23. emptyF.1.23.1. PurposeF.1.23.2. SignatureF.1.23.3. ParameterF.1.24. encode-for-uriF.1.24.1. PurposeF.1.24.2. SignatureF.1.24.3. ParameterF.1.25. ends-withF.1.25.1. PurposeF.1.25.2. SignatureF.1.25.3. ParametersF.1.26. errorF.1.26.1. PurposeF.1.26.2. SignatureF.1.26.3. ParametersF.1.27. escape-html-uriF.1.27.1. PurposeF.1.27.2. SignatureF.1.27.3. ParameterF.1.28. exactly-oneF.1.28.1. PurposeF.1.28.2. SignatureF.1.28.3. ParameterF.1.29. existsF.1.29.1. PurposeF.1.29.2. SignatureF.1.29.3. ParameterF.1.30. falseF.1.30.1. PurposeF.1.30.2. SignatureF.1.30.3. See alsoF.1.31. floorF.1.31.1. PurposeF.1.31.2. SignatureF.1.31.3. ParameterF.1.31.4. See alsoF.1.32. hours-from-dateTime, hours-from-timeF.1.32.1. PurposeF.1.32.2. SignatureF.1.32.3. ParameterF.1.32.4. See alsoF.1.33. idF.1.33.1. PurposeF.1.33.2. SignatureF.1.33.3. ParametersF.1.33.4. See alsoF.1.34. idrefF.1.34.1. PurposeF.1.34.2. SignatureF.1.34.3. ParametersF.1.34.4. See alsoF.1.35. implicit-timezoneF.1.35.1. PurposeF.1.35.2. SignatureF.1.35.3. See alsoF.1.36. index-ofF.1.36.1. SignatureF.1.36.2. PurposeF.1.36.3. ParametersF.1.37. implicit-timezoneF.1.37.1. PurposeF.1.37.2. SignatureF.1.37.3. See alsoF.1.38. in-scope-prefixesF.1.38.1. PurposeF.1.38.2. SignatureF.1.38.3. ParameterF.1.39. insert-beforeF.1.39.1. PurposeF.1.39.2. SignatureF.1.39.3. ParametersF.1.40. iri-to-uriF.1.40.1. PurposeF.1.40.2. SignatureF.1.40.3. ParameterF.1.41. langF.1.41.1. PurposeF.1.41.2. SignatureF.1.41.3. ParametersF.1.42. lastF.1.42.1. PurposeF.1.42.2. SignatureF.1.42.3. See alsoF.1.43. local-nameF.1.43.1. PurposeF.1.43.2. SignatureF.1.43.3. ParameterF.1.44. local-name-from-QNameF.1.44.1. PurposeF.1.44.2. SignatureF.1.44.3. ParameterF.1.45. lower-caseF.1.45.1. PurposeF.1.45.2. SignatureF.1.45.3. ParameterF.1.45.4. See alsoF.1.46. matchesF.1.46.1. PurposeF.1.46.2. SignatureF.1.46.3. ParametersF.1.47. max, minF.1.47.1. PurposeF.1.47.2. SignatureF.1.47.3. ParametersF.1.48. minutes-from-dateTime, minutes-from-timeF.1.48.1. PurposeF.1.48.2. SignatureF.1.48.3. ParameterF.1.48.4. See alsoF.1.49. minutes-from-durationF.1.49.1. PurposeF.1.49.2. SignatureF.1.49.3. ParameterF.1.50. month-from-date, month-from-dateTimeF.1.50.1. PurposeF.1.50.2. SignatureF.1.50.3. ParameterF.1.50.4. See alsoF.1.51. months-from-durationF.1.51.1. PurposeF.1.51.2. SignatureF.1.51.3. ParameterF.1.52. month-from-date, month-from-dateTimeF.1.52.1. PurposeF.1.52.2. SignatureF.1.52.3. ParameterF.1.52.4. See alsoF.1.53. nameF.1.53.1. PurposeF.1.53.2. SignatureF.1.53.3. ParameterF.1.54. namespace-uriF.1.54.1. PurposeF.1.54.2. SignatureF.1.54.3. ParameterF.1.55. namespace-uri-for-prefixF.1.55.1. PurposeF.1.55.2. SignatureF.1.55.3. ParametersF.1.56. namespace-uri-from-QNameF.1.56.1. PurposeF.1.57. nilledF.1.57.1. PurposeF.1.57.2. SignatureF.1.57.3. ParameterF.1.58. normalize-unicodeF.1.58.1. PurposeF.1.58.2. SignatureF.1.58.3. ParametersF.1.59. notF.1.59.1. PurposeF.1.59.2. SignatureF.1.59.3. ParameterF.1.60. numberF.1.60.1. PurposeF.1.60.2. SignatureF.1.60.3. ParameterF.1.61. one-or-moreF.1.61.1. PurposeF.1.61.2. SignatureF.1.61.3. ParameterF.1.62. positionF.1.62.1. PurposeF.1.62.2. SignatureF.1.62.3. See alsoF.1.63. prefix-from-QNameF.1.63.1. PurposeF.1.63.2. SignatureF.1.63.3. ParameterF.1.64. QNameF.1.64.1. PurposeF.1.64.2. SignatureF.1.64.3. ParametersF.1.65. removeF.1.65.1. PurposeF.1.65.2. SignatureF.1.65.3. ParametersF.1.66. replaceF.1.66.1. PurposeF.1.66.2. SignatureF.1.66.3. ParametersF.1.67. resolve-uriF.1.67.1. PurposeF.1.67.2. SignatureF.1.67.3. ParametersF.1.68. resolve-QNameF.1.68.1. PurposeF.1.68.2. SignatureF.1.68.3. ParametersF.1.69. reverseF.1.69.1. PurposeF.1.69.2. SignatureF.1.69.3. ParameterF.1.70. rootF.1.70.1. PurposeF.1.70.2. SignatureF.1.70.3. ParameterF.1.71. roundF.1.71.1. PurposeF.1.71.2. SignatureF.1.71.3. ParameterF.1.72. round-half-to-evenF.1.72.1. PurposeF.1.72.2. SignatureF.1.72.3. ParametersF.1.73. seconds-from-dateTime, seconds-from-timeF.1.73.1. PurposeF.1.73.2. SignatureF.1.73.3. ParameterF.1.73.4. See alsoF.1.74. seconds-from-durationF.1.74.1. PurposeF.1.74.2. SignatureF.1.74.3. ParameterF.1.75. starts-withF.1.75.1. PurposeF.1.75.2. SignatureF.1.75.3. ParametersF.1.76. static-base-uriF.1.76.1. PurposeF.1.76.2. SignatureF.1.77. stringF.1.77.1. PurposeF.1.77.2. SignatureF.1.77.3. ParameterF.1.78. string-joinF.1.78.1. PurposeF.1.78.2. SignatureF.1.78.3. ParametersF.1.78.4. See alsoF.1.79. string-lengthF.1.79.1. PurposeF.1.79.2. SignatureF.1.79.3. ParameterF.1.80. string-to-codepointsF.1.80.1. PurposeF.1.80.2. SignatureF.1.80.3. ParameterF.1.81. subsequenceF.1.81.1. PurposeF.1.81.2. SignatureF.1.81.3. ParametersF.1.82. substringF.1.82.1. PurposeF.1.82.2. SignatureF.1.82.3. ParametersF.1.83. substring-afterF.1.83.1. PurposeF.1.83.2. SignatureF.1.83.3. ParametersF.1.84. substring-beforeF.1.84.1. PurposeF.1.84.2. SignatureF.1.84.3. ParametersF.1.85. sumF.1.85.1. PurposeF.1.85.2. SignatureF.1.85.3. ParametersF.1.86. timezone-from-date, timezone-from-dateTime, timezone-from-timeF.1.86.1. PurposeF.1.86.2. SignatureF.1.86.3. ParameterF.1.86.4. See alsoF.1.87. tokenizeF.1.87.1. PurposeF.1.87.2. SignatureF.1.87.3. ParametersF.1.88. traceF.1.88.1. PurposeF.1.88.2. SignatureF.1.88.3. ParametersF.1.89. translateF.1.89.1. PurposeF.1.89.2. SignatureF.1.89.3. ParametersF.1.90. trueF.1.90.1. PurposeF.1.90.2. SignatureF.1.90.3. See alsoF.1.91. unorderedF.1.91.1. PurposeF.1.91.2. SignatureF.1.91.3. ParameterF.1.92. upper-caseF.1.92.1. PurposeF.1.92.2. SignatureF.1.92.3. ParameterF.1.92.4. See alsoF.1.93. year-from-date, year-from-dateTimeF.1.93.1. PurposeF.1.93.2. SignatureF.1.93.3. ParameterF.1.93.4. See alsoF.1.94. years-from-durationF.1.94.1. PurposeF.1.94.2. SignatureF.1.94.3. ParameterF.1.95. zero-or-oneF.1.95.1. PurposeF.1.95.2. SignatureF.1.95.3. Parameter
G. References
G.1. SpecificationsG.2. Tools and Resources
Glossary

Content preview from Beginning XSLT and XPath: Transforming XML Documents and Data

Chapter 9. Identifiers and Keys

XSLT and XPath between them provide several ways to locate items, and to index and link them using identifiers and keys that express relationships between elements.

The id() function in XPath 2.0 enables you to find element nodes having attributes of type xs:ID, and it can be useful when the source schema or DTD is accessible. However, there are some limitations that result from the rules set by the XML specification for attribute values.

The <xsl:key> declaration and the matching XSLT key() function overcome these limitations, enabling you to locate source-tree nodes by matching either elements or attributes of any type.

When there are no obvious identifier values to use in the source data, you can use the XSLT generate-id() function to associate nodes with one another. In any single execution of a stylesheet, this function will always cause an identical unique value to be generated for a given node. This property can be used to associate related items and generate linking information.

In this chapter you will do the following:

Review some characteristics of the ID and IDREF datatypes used in XML documents to uniquely identify items and refer to them.
Learn how to use the XPath 2.0 id() function on ID attributes to locate source items, and appreciate its limitations.
Use <xsl:key> and the key() function to work with more complex cross-reference structures, and locate non-unique items for processing.
Apply the generate-id() function to index the lines of ...

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Beginning XSLT and XPath: Transforming XML Documents and Data

by Ian Williams

Chapter 9. Identifiers and Keys

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