Table of Contents
Foreword xi
1 Mastering App Development Requires More than Coding Skills xii
2 Why is JavaScript a Good Choice for Building Web Apps? xii
3 Why is Java a Good Choice for Building Web Apps? xiii
4 Comparing Java with JavaScript xiii
5 Good Programs Are: Effective, Robust, Efficient and Maintainable xiv
6 Run the Apps and Get Their Code xiv
List of Figures xv
List of Tables xvii
Part I Getting Started
1 A Quick Tour of the Foundations of Web Apps 3
1.1 The World Wide Web (WWW) 3
1.2 HTML and XML 3
1.3 Styling Web Documents and User Interfaces with CSS 9
1.4 JavaScript - "the assembly language of the Web" 10
1.5 Accessibility for Web Apps 11
1.6 Quiz Questions 12
2 More on JavaScript 14
2.1 JavaScript Basics 14
2.2 Storing Database Tables with JavaScript's localStorage API 35
3 Building a Minimal Web App with Plain JS in Seven Steps 37
3.1 Step 1 - Set up the Folder Structure 38
3.2 Step 2 - Write the Model Code 39
3.3 Step 3 - Initialize the Application 44
3.4 Step 4 - Implement the Create Use Case 44
3.5 Step 5 - Implement the Retrieve/List All Use Case 46
3.6 Step 6 - Implement the Update Use Case 47
3.7 Step 7 - Implement the Delete Use Case 49
3.8 Run the App and Get the Code 50
3.9 Possible Variations and Extensions 50
3.10 Points of Attention 52
3.11 Practice Projects 55
4 Building a Minimal Web App with Java EE in Seven Steps 58
4.1 Java Basics 59
4.2 Step 1 - Set up the Folder Structure 61
4.3 Step 2 - Write the Model Code 63
4.4 Step 3 - Configure the App 68
4.5 Step 4 - Implement the Create Use Case 75
4.6 Step 5 - Implement the Retrieve/List All Use Case 77
4.7 Step 6 - implement the Update Use Case 79
4.8 Step 7 - Implement the Delete Use Case 82
4.9 Style the User Interface with CSS 83
4.10 Run the App and Get the Code 84
4.11 Possible Variations and Extensions 85
4.12 Points of Attention 86
4.13 Practice Projects 87
4.14 Quiz Questions 88
5 Information Modeling 91
5.1 Classes with Properties and Methods 92
5.2 Connecting Classes with Associations 95
5.3 From a Conceptual Model via a Design Model to Class Models 95
5.4 Excursion: Formalizing Information Models with RDF and OWL 97
5.5 Summary 105
5.6 Exercises 106
6 Application Architecture 107
6.1 The Model-View-Controller (MVC) Architecture Metaphor 108
6.2 The Onion Architecture Metaphor 110
6.3 "Logical" versus "Physical" User Interface 111
6.4 MVC Web Applications 112
6.5 Deployment Architectures 113
Part II Constraint Validation
7 Integrity Constraints and Data Validation 117
7.1 Introduction 117
7.2 Integrity Constraints 118
7.3 Responsive Validation 129
7.4 Constraint Validation in MVC Applications 130
7.5 Adding Constraints to a Design Model 131
7.6 Summary 132
7.7 Criteria for Evaluating the Validation Support of Frameworks 133
7.8 Quiz Questions 133
8 Implementing Constraint Validation in a Plain JS Web App 136
8.1 Introduction 136
8.2 New Issues 136
8.3 Make a JavaScript Class Model 137
8.4 Set up the Folder Structure Adding Some Library Files 139
8.5 Write the Model Code 140
8.6 Write the View Code 146
8.7 Run the App and Get the Code 150
8.8 Possible Variations and Extensions 151
8.9 Points of Attention 152
8.10 Practice Projects 153
8.11 Quiz Questions 156
9 Implementing Constraint Validation in a Java EE Web App 159
9.1 Java Annotations for Persistent Data Management and Constraint Validation 159
9.2 New Issues 162
9.3 Make an Entity Class Model 163
9.4 Write the Model Code 164
9.5 Write the View Code 168
9.6 Defining a Custom Validation Annotation 171
9.7 Run the App and Get the Code 173
9.8 Possible Variations and Extensions 173
9.9 Practice Projects 177
9.10 Quiz Questions 179
Part III Enumerations
10 Enumerations and Enumeration Attributes 183
10.1 Enumerations 183
10.2 Enumeration Attributes 187
10.3 Enumerations in Computational Languages 188
10.4 Dealing with Enumeration Attributes in a Design Model 191
10.5 Quiz Questions 192
11 Implementing Enumeration Attributes in a Plain JS Web App 194
11.1 New issues 194
11.2 Make a JavaScript Class Model 195
11.3 Add the Library File Enumeration.js 196
11.4 The Meta-Class Enumeration 196
11.5 Write the Model Code 198
11.6 Write the View Code 203
11.7 Run the App and Get the Code 207
11.8 Practice Projects 207
11.9 Quiz Questions 210
12 Implementing Enumeration Attributes in a Java EE Web App 211
12.1 New Issues 211
12.2 Make an Entity Class Model 212
12.3 Write the Model Code 212
12.4 Write the View Code 218
12.5 Displaying Value Sets for Multi-Valued Enumeration Attributes 221
12.6 Run the App and Get the Code 222
12.7 Practice Projects 222
12.8 Quiz Questions 224
Part IV Special Datatypes and Derived Properties
13 Special Datatypes 229
13.1 Boolean Values 230
13.2 String Patterns 230
13.3 Special Numeric Data Types 232
13.4 Calendar Dates and Times 234
13.5 Quantities 239
13.6 Complex Data Types 241
14 Derived Properties 243
14.1 Virtual Derived Properties 243
14.2 Materialized Derived Properties 244
14.3 Dealing with Derived Properties in the User Interface 245
Glossary 246
Index 252
