Book Image

Kotlin for Enterprise Applications using Java EE

By : Raghavendra Rao K
Book Image

Kotlin for Enterprise Applications using Java EE

By: Raghavendra Rao K

Overview of this book

Kotlin was developed with a view to solving programmers’ difficulties and operational challenges. This book guides you in making Kotlin and Java EE work in unison to build enterprise-grade applications. Together, they can be used to create services of any size with just a few lines of code and let you focus on the business logic. Kotlin for Enterprise Applications using Java EE begins with a brief tour of Kotlin and helps you understand what makes it a popular and reasonable choice of programming language for application development, followed by its incorporation in the Java EE platform. We will then learn how to build applications using the Java Persistence API (JPA) and Enterprise JavaBeans (EJB), as well as develop RESTful web services and MicroServices. As we work our way through the chapters, we’ll use various performance improvement and monitoring tools for your application and see how they optimize real-world applications. At each step along the way, we will see how easy it is to develop enterprise applications in Kotlin. By the end of this book, we will have learned design patterns and how to implement them using Kotlin.
Table of Contents (13 chapters)

Transactions

As we said earlier, data is an important part of enterprise applications. Creating and managing data is critical. It is also necessary to maintain the integrity of the data while performing operations.

Transactions are sets of operations that can be carried out on the entities. Transaction management essentially involves managing the life cycle of the entities to maintain the integrity of the data. When a transaction executes a set of operations, it will either succeed or be rolled back if there are any failures. There is no way in which half the operations will execute, leaving the data in an inconsistent state.

Let's take a look at how to handle transactions in Java EE applications. We will discuss how we can use the Java Transaction API with both EJBs and CDI-managed beans using the @Transactional and @TransactionAttribute annotations. We will also look at...