XML Schema by Vlist, Eric van der -- Read -- Imperial Library of Trantor

Index

XML Schema

SPECIAL OFFER: Upgrade this ebook with O’Reilly A Note Regarding Supplemental Files Preface

Who Should Read This Book? Who Should Not Read This Book? About the Examples Organization of This Book Conventions Used in This Book How to Contact Us Acknowledgments

1. Schema Uses and Development

What Schemas Do for XML

Validation Documentation Querying Support Data Binding Guided Editing

W3C XML Schema

2. Our First Schema

The Instance Document Our First Schema First Findings

W3C XML Schema Is Modular W3C XML Schema Is Both About Structure and Datatyping Flat Design, Global Components

3. Giving Some Depth to Our First Schema

Working From the Structure of the Instance Document New Lessons

Depth Versus Modularity? Russian Doll and Object-Oriented Design Where Have the Element Types Gone?

4. Using Predefined Simple Datatypes

Lexical and Value Spaces Whitespace Processing String Datatypes

No Whitespace Replacement Normalized Strings Collapsed Strings

Tokenss Qualified names URIs Notations Binary string-encoded datatypes

Numeric Datatypes

Decimal Types Float Datatypes xs:boolean

Date and Time Datatypes

The Realm of ISO 8601 Datatypes

List Types What About anySimpleType? Back to Our Library

5. Creating Simple Datatypes

Derivation By Restriction

Facets

Whitespace collapsed strings

xs:enumeration xs:length xs:maxLength xs:minLength xs:pattern

Other strings

xs:whiteSpace

Float datatypes

xs:enumeration xs:maxExclusive xs:maxInclusive xs:minExclusive xs:minInclusive xs:pattern

Date and time datatypes

xs:enumeration xs:maxExclusive xs:maxInclusive xs:minExclusive xs:minInclusive xs:pattern

Integer and derived datatypes

xs:totalDigits

Decimals

xs:fractionDigits

Booleans

xs:pattern

List datatypes

Multiple Restrictions and Fixed Attribute

Facet that can be changed but needs to be more restrictive Facet that cannot be changed Facet that performs the intersection of the lexical spaces Facet that does its job before the lexical space Fixed facets

Derivation By List

List Datatypes

Derivation By Union Some Oddities of Simple Types

Beware of the Order Using or Abusing Lists to Change the Behavior of Length Constraining Facets

Back to Our Library

6. Using Regular Expressions to Specify Simple Datatypes

The Swiss Army Knife The Simplest Possible Patterns Quantifying More Atoms

Special Characters Wildcard Character Classes

Classical Perl character classes Unicode character classes User-defined character classes

Oring and Grouping

Common Patterns

String Datatypes

Unicode blocks Counting words URIs

Numeric and Float Types

Leading zeros Fixed format

Datetimes

Time zones

Back to Our Library

7. Creating Complex Datatypes

Simple Versus Complex Types Examining the Landscape

Content Models Named Versus Anonymous Types Creation Versus Derivation

Simple Content Models

Creation of Simple Content Models Derivation from Simple Contents

Derivation by extension Derivation by restriction Comparison of these two methods

Complex Content Models

Creation of Complex Content

Compositors and particles Element and attribute groups Unique Particle Attribution Rule Consistent Declaration Rule Limitations on unordered content models

Limitations of xs:all Adapting the structure of your document Using xs:choice instead of xs:all

Derivation of Complex Content

Derivation by extension Derivation by restriction Asymmetry of these two methods

Mixed Content Models

Creating Mixed Content Models Derivation of Mixed Content Models

Derivation by extension Derivation by restriction Derivation between complex and mixed content models

Empty Content Models

Creation of Empty Content Models

As simple content models As complex content models

Derivation of Empty Content Models

Derivation by extension Derivation by restriction

Simple or Complex Content Models for Empty Content Models?

Back to Our Library Derivation or Groups

8. Creating Building Blocks

Schema Inclusion Schema Inclusion with Redefinition

Redefining of Simple and Complex Types Redefinition of Element and Attribute Groups

Extension Restriction

Other Alternatives

External Parsed Entities XInclude

Simplifying the Library

9. Defining Uniqueness, Keys, and Key References

xs:ID and xs:IDREF XPath-Based Identity Checks

Uniqueness Composite Fields Keys Key References Permitted XPath Expressions

ID/IDREF Versus xs:key/xs:keyref Using xs:key and xs:unique As Co-occurrence Constraints

10. Controlling Namespaces

Namespaces Present Two Challenges to Schema Languages Namespace Declarations To Qualify Or Not to Qualify? Disruptive Attributes Namespaces and XPath Expressions Referencing Other Namespaces Schemas for XML, XML Base and XLink

XML Attributes XLink Attributes

Namespace Behavior of Imported Components Importing Schemas with No Namespaces Chameleon Design Allowing Any Elements or Attributes from a Particular Namespace

11. Referencing Schemas and Schema Datatypes in XML Documents

Associating Schemas with Instance Documents Defining Element Types

Defining Simple Types Defining Complex Types

Defining Nil (Null) Values Beware the Intrusive Nature of These Features...

12. Creating More Building Blocks Using Object-Oriented Features

Substitution Groups

Using a “Traditional” Group Substitution Groups

Using substitution groups Abstract elements Trees of substitution groups

Traditional Declarations or Substitution Groups? Fuzzy Recommendation

Extension of xs:choice through group redefinitions Restricting substitution groups

Controlling Derivations

Attributes Elements

Block attribute Final elements Abstract elements

Complex Types

Blocking complex types Final complex types Abstract complex types

Simple Types Other Components and Redefinitions

13. Creating Extensible Schemas

Extensible Schemas

Global Components

Elements Attributes

final and fixed Attributes Splitting Schema Components

The Need for Open Schemas

xsi:type Wildcards And Substitution Groups?

14. Documenting Schemas

Style Matters

Keep It Simple Think Globally When It’s Similar, Show It

The W3C XML Schema Annotation Element Foreign Attributes XML 1.0 Comments Which One and What For?

15. Elements Reference Guide

xs:all(outside a group) xs:all(within a group) xs:annotation xs:any xs:anyAttribute xs:appinfo xs:attribute(global definition) xs:attribute(reference or local definition) xs:attributeGroup(global definition) xs:attributeGroup(reference) xs:choice(outside a group) xs:choice(within a group) xs:complexContent xs:complexType(global definition) xs:complexType(local definition) xs:documentation xs:element(global definition) xs:element(within xs:all) xs:element(reference or local definition) xs:enumeration xs:extension(simple content) xs:extension(complex content) xs:field xs:fractionDigits xs:group(definition) xs:group(reference) xs:import xs:include xs:key xs:keyref xs:length xs:list xs:maxExclusive xs:maxInclusive xs:maxLength xs:minExclusive xs:minInclusive xs:minLength xs:notation xs:pattern xs:redefine xs:restriction(simple type) xs:restriction(simple content) xs:restriction(complex content) xs:schema xs:selector xs:sequence(outside a group) xs:sequence(within a group) xs:simpleContent xs:simpleType(global definition) xs:simpleType(local definition) xs:totalDigits xs:union xs:unique xs:whiteSpace

16. Datatype Reference Guide

xs:anyURI xs:base64Binary xs:boolean xs:byte xs:date xs:dateTime xs:decimal xs:double xs:duration xs:ENTITIES xs:ENTITY xs:float xs:gDay xs:gMonth xs:gMonthDay xs:gYear xs:gYearMonth xs:hexBinary xs:ID xs:IDREF xs:IDREFS xs:int xs:integer xs:language xs:long xs:Name xs:NCName xs:negativeInteger xs:NMTOKEN xs:NMTOKENS xs:nonNegativeInteger xs:nonPositiveInteger xs:normalizedString xs:NOTATION xs:positiveInteger xs:QName xs:short xs:string xs:time xs:token xs:unsignedByte xs:unsignedInt xs:unsignedLong xs:unsignedShort

A. XML Schema Languages

What Is a XML Schema Language?

XML Schema Languages Are Not Schemas Firewalls Against Diversity Intrusive Modeling Tools Early Binding Tools

Classification of XML Schema Languages

Rule-Based XML Schema Languages Grammar-Based XML Schema Languages Object-Oriented XML Schema Languages

A Short History of XML Schema Languages

The DTD Family The W3C XML Schema Family The RELAX NG Family Schematron Examplotron

Sample Application XML DTDs

Example

W3C XML Schema

Example

RELAX NG

Example

Schematron

Example

Examplotron

Example

Decisions

B. Work in Progress

W3C Projects

XPath, XSLT, and XQuery DOM RDF

ISO: DSDL Other

PSVI Serialization APIs Schema Extensions: Error Messages

Glossary Index About the Author Colophon SPECIAL OFFER: Upgrade this ebook with O’Reilly

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