Book Image

Developing Middleware in Java EE 8

Book Image

Developing Middleware in Java EE 8

Overview of this book

Middleware is the infrastructure in software based applications that enables businesses to solve problems, operate more efficiently, and make money. As the use of middleware extends beyond a single application, the importance of having it written by experts increases substantially. This book will help you become an expert in developing middleware for a variety of applications. The book starts off by exploring the latest Java EE 8 APIs with newer features and managing dependencies with CDI 2.0. You will learn to implement object-to-relational mapping using JPA 2.1 and validate data using bean validation. You will also work with different types of EJB to develop business logic, and with design RESTful APIs by utilizing different HTTP methods and activating JAX-RS features in enterprise applications. You will learn to secure your middleware with Java Security 1.0 and implement various authentication techniques, such as OAuth authentication. In the concluding chapters, you will use various test technologies, such as JUnit and Mockito, to test applications, and Docker to deploy your enterprise applications. By the end of the book, you will be proficient in developing robust, effective, and distributed middleware for your business.
Table of Contents (18 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Contributors
Preface
Index

Using JMS resources with annotations


In the previous example, we showed how to create JMS resources using the GlassFish administration console. This is very useful when you need to register factories and destinations that work across different applications. However, if your JMS resources are local to your application, that is, no other applications are going to communicate with you on a JMS channel, it's much simpler to use annotations to define application-specific JMS resources. Those annotations can be used on any Java EE component class.

Creating connection factories

In order to create a destination resource, you can use the @JMSDestinationDefinition annotation as follows:

@JMSConnectionFactoryDefinition( 
        name = "java:app/jms/MyConnectionFactory" 
) 

You can also configure some properties of your connection factory; for example, you can set the minimum and maximum pool size for this connection factory, as follows:

@JMSConnectionFactoryDefinition( 
        name = "java:app/jms/MyConnectionFactory...