Book Image

Java EE 8 Application Development

Book Image

Java EE 8 Application Development

Overview of this book

Java EE is an Enterprise Java standard. Applications written to comply with the Java EE specification do not tie developers to a specific vendor; instead they can be deployed to any Java EE compliant application server. With this book, you’ll get all the tools and techniques you need to build robust and scalable applications in Java EE 8. This book covers all the major Java EE 8 APIs including JSF 2.3, Enterprise JavaBeans (EJB) 3.2, Contexts and Dependency Injection (CDI) 2.0, the Java API for WebSockets, JAX-RS 2.1, Servlet 4.0, and more. The book begins by introducing you to Java EE 8 application development and goes on to cover all the major Java EE 8 APIs. It goes beyond the basics to develop Java EE applications that can be deployed to any Java EE 8 compliant application server. It also introduces advanced topics such as JSON-P and JSON-B, the Java APIs for JSON processing, and the Java API for JSON binding. These topics dive deep, explaining how the two APIs (the Model API and the Streaming API) are used to process JSON data. Moving on, we cover additional Java EE APIs, such as the Java API for Websocket and the Java Message Service (JMS), which allows loosely coupled, asynchronous communication. Further on, you’ll discover ways to secure Java EE applications by taking advantage of the new Java EE Security API. Finally, you’ll learn more about the RESTful web service development using the latest JAX-RS 2.1 specification. You’ll also get to know techniques to develop cloud-ready microservices in Java EE.
Table of Contents (21 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

JSON Patch


JSON-P 1.1 also introduced support for JSON Patch, another Internet Engineering Task Force standard, this one providing a series of operations that can be applied to a JSON document. JSON Patch allows us to perform partial updates on a JSON object.

The following operations are supported by JSON Patch:

JSON Patch Operation

Description

add

Adds an element to a JSON document.

remove

Removes an element from a JSON document.

replace

Replaces a value in a JSON document with a new value.

move

Moves a value in a JSON document from its current location in the document to a new position.

copy

Copies a value in a JSON document to a new location in the document.

test

Verifies that the value in a specific location in a JSON document is equal to the specified value.

 

JSON-P supports all of the preceding JSON Patch operations, which rely on JSON Pointer expressions to locate the source and target locations in JSON documents.

The following example illustrates how we can use JSON Patch with JSON-P 1.1:

    package...