Book Image

Effortless App Development with Oracle Visual Builder

By : Ankur Jain
Book Image

Effortless App Development with Oracle Visual Builder

By: Ankur Jain

Overview of this book

Organizations are moving their applications, data, and processes to the cloud to reduce application costs, effort, and maintenance. However, adopting new technology poses challenges for developers, solutions architects, and designers due to a lack of knowledge and appropriate practical training resources. This book helps you get to grips with Oracle Visual Builder (VB) and enables you to quickly develop web and mobile applications and deploy them to production without hassle. This book will provide you with a solid understanding of VB so that you can adopt it at a faster pace and start building applications right away. After working with real-time examples to learn about VB, you'll discover how to design, develop, and deploy web and mobile applications quickly. You'll cover all the VB components in-depth, including web and mobile application development, business objects, and service connections. In order to use all these components, you'll also explore best practices, security, and recommendations, which are well explained within the chapters. Finally, this book will help you gain the knowledge you need to enhance the performance of an application before deploying it to production. By the end of this book, you will be able to work independently and deploy your VB applications efficiently and with confidence.
Table of Contents (23 chapters)
1
Section 1: Exploring the Building Blocks of VB
5
Section 2: Working with Data and Services
10
Section 3: Building Web and Mobile Apps Using Various VB Components
15
Section 4: Security, Recommendations, Best Practices, and Troubleshooting

Understanding implicit objects of VB

Implicit objects are those objects that are defined inside Visual Builder and can be used to extract the values of variables. These are treated as keywords in VB. Implicit objects are prefixed with the $ sign. VB implicit objects are as follows:

  • $application: The application implicit object is used to get the value of the variable that is defined at the application scope. For example, if you have defined a variable called firstName at the application level, the expression $application.variables.firstName will be used to get the value of this variable.
  • $flow: The flow implicit object is used to get the value of the variables that are defined at the flow scope. For example, if you have defined a variable called firstName at the flow level, the expression $flow.variables.firstName will be used to get the value of the variable.
  • $page: The page implicit object is used to get the variable values that are defined at the page scope. For...