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Jakarta EE Application Development

Jakarta EE Application Development

By : David R. Heffelfinger
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Jakarta EE Application Development

Jakarta EE Application Development

5 (2)
By: David R. Heffelfinger

Overview of this book

Jakarta EE stands as a robust standard with multiple implementations, presenting developers with a versatile toolkit for building enterprise applications. However, despite the advantages of enterprise application development, vendor lock-in remains a concern for many developers, limiting flexibility and interoperability across diverse environments. This Jakarta EE application development guide addresses the challenge of vendor lock-in by offering comprehensive coverage of the major Jakarta EE APIs and goes beyond the basics to help you develop applications deployable on any Jakarta EE compliant runtime. This book introduces you to JSON Processing and JSON Binding and shows you how the Model API and the Streaming API are used to process JSON data. You’ll then explore additional Jakarta EE APIs, such as WebSocket and Messaging, for loosely coupled, asynchronous communication and discover ways to secure applications with the Jakarta EE Security API. Finally, you'll learn about Jakarta RESTful web service development and techniques to develop cloud-ready microservices in Jakarta EE. By the end of this book, you'll have developed the skills to craft secure, scalable, and cloud-native microservices that solve modern enterprise challenges.
Table of Contents (18 chapters)
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15
Chapter 15: Putting it All Together

Faces Flows

Faces Flows defines a scope that can span several pages. Flow-scoped beans are created when the user enters a flow (a set of web pages), and are destroyed when the user leaves the flow.

Faces Flows adopts the convention-over-configuration principle of Jakarta Faces. The following conventions are typically used when developing applications employing Faces Flows:

  • All pages in the flow must be placed in a directory whose name defines the name of the flow.
  • An XML configuration file named after the directory name and suffixed with -flow must exist inside the directory that contains the pages in the flow (the file may be empty, but it must exist)
  • The first page in the flow must be named after the directory name that contains the flow
  • The last page in the flow must not be located inside the directory containing the flow, and must be named after the directory name and suffixed with -return

Figure 7.3 illustrates these conventions:

Figure 7.3: Faces Flows conventions ...

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