Pro Apache XML

502 Pages·2006·5.58 MB·English

by  Poornachandra Sarang

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Pro Apache XML
Poornachandra Sarang, Ph.D.
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ProApache XML
Copyright © 2006 by Poornachandra Sarang,Ph.D.
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To my mother,Shobha
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Contents at a Glance
About the Author.................................................................xvii
About the Technical Reviewer .....................................................xviii
Acknowledgments................................................................xix
Introduction......................................................................xx
Preface.........................................................................xxii
nCHAPTER 1 XML............................................................1
nCHAPTER 2 XML Processing ...............................................39
nCHAPTER 3 Web Services Architecture....................................105
nCHAPTER 4 Apache SOAP.................................................151
nCHAPTER 5 XSLT and Apache Xalan.......................................195
nCHAPTER 6 XSL-FO.......................................................237
nCHAPTER 7 The Apache Cocoon Framework...............................279
nCHAPTER 8 XML-Security.................................................327
nCHAPTER 9 XML Databases...............................................375
nCHAPTER 10 Apache Forrest...............................................415
nAPPENDIX A Linux Installations ............................................449
nINDEX .......................................................................455
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Contents
About the Author.................................................................xvii
About the Technical Reviewer .....................................................xviii
Acknowledgments................................................................xix
Introduction......................................................................xx
Preface.........................................................................xxii
nCHAPTER 1 XML...........................................................1
Why Use XML?...................................................1
WhatIs XML?....................................................2
XML Syntax......................................................3
XML Documents Are Text Based...............................4
XML Is Case Sensitive........................................4
XML Restricts the Use of Certain Characters ....................4
XML Documents Begin with an XML Declaration.................5
XML Documents Are Marked by Using Elements.................5
Every Element Has a Start and an End Tag......................5
EveryXML Document Must Start with a Root Element............5
Elements in an XML Document Can Be Nested ..................5
An Element Can Be Empty....................................6
An XML Document Can Contain User-Written Comments .........6
CDATA Encloses Data That Should Not Be Interpreted by Parsers ...7
XML Namespaces................................................7
What Is a Namespace?.......................................7
Creating Fully Qualified Elements..............................8
Creating Multiple Namespaces................................8
Using a Default Namespace..................................10
Using Both Default and Prefixed Namespaces..................11
Document Type Definition........................................12
Writing a DTD..............................................12
Including a DTD in a Document...............................18
Understanding DTD Drawbacks ..............................20
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viii nCONTENTS
XML Schema ...................................................20
Defining Elements..........................................21
Defining Attributes..........................................21
Using Additional Specifiers...................................21
Annotating XML Schemas ...................................23
Using Simple Data Types in XML Schemas.....................24
Using Complex Types in XML Schemas........................28
Including XML Schemas.....................................36
Summary.......................................................37
nCHAPTER 2 XML Processing.............................................39
Need for XML Parsing............................................39
Understanding the Need for Parsing...........................39
Extracting Data by Using Parsers .............................40
Using Parsing Techniques ...................................41
Obtaining Ready-to-Use Parsers..............................41
Using XML Transformations..................................42
Practical Applications of XML Parsing..............................42
Stock Brokerage............................................42
Market Survey Application...................................43
Application Configurations...................................44
Other Applications..........................................45
System Architecture for XML Processing ...........................45
Installing Software...............................................46
Parsing with SAX................................................47
SAX Processing Model ......................................47
Pros and Cons of SAX Processing.............................49
SAX Processing Model Architecture...........................50
Document Processing Using SAX.............................50
SAX API ...................................................63
DOM...........................................................65
DOM Processing Model......................................66
Pros and Cons of DOM ......................................66
Document Processing Using DOM ............................68
Application for Counting Number of Customers.................69
Updating a Document by Using DOM..........................73
DOM API...................................................79
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nCONTENTS ix
XMLBeans......................................................80
XMLBeans Processing Model ................................81
Pros and Cons of XMLBeans .................................81
Installing the XMLBeans Software ............................82
Document Processing Using XMLBeans .......................83
SAX,DOM,XMLBeans—Which One to Use?.......................102
Summary......................................................103
nCHAPTER 3 Web Services Architecture ................................105
What Is a Web Service? .........................................105
Web Services Integration Model..................................106
Why Web Services?.............................................108
Platform Independent......................................108
Language Independent.....................................108
Transport Independent.....................................108
Web Services Architecture.......................................109
Service Creation...........................................110
Service Publication ........................................110
Service Location...........................................111
Service Description........................................111
Service Binding ...........................................112
Service Invocation.........................................112
SOAP .........................................................113
WhatIs SOAP?............................................113
SOAP Message Structure...................................114
SOAP Messaging Modes....................................126
SOAP over HTTP...........................................129
WSDL.........................................................131
Why WSDL? ..............................................131
How to Use WSDL .........................................131
WSDL Document Structure .................................131
The definitions Element ....................................132
The types Element.........................................133
The import Element........................................133
The message Element......................................134
The portType and operation Elements........................135
The binding Element.......................................135
The service Element .......................................136
Messaging Exchange Pattern ...............................137
The Complete WSDL Example...............................139