Business logic organization and encapsulation strategies

Key to making good design decisions is knowing the available options and understanding their respective benefits and drawbacks. This presentation looks at two important design decisions that you must make when developing the business logic for an enterprise Java application: how to organize the business logic and how to encapsulate the business logic.

The first part of the talk describes the two main ways to organize business logic: an object-oriented design (a.k.a domain model) and a procedural design (a.k.a. transaction script). You will learn how to implement the business logic using each of these approaches and which lightweight frameworks to use. We will cover the criteria that you can use to decide between the two approaches.

In the second part of the talk, you will learn about the different options for encapsulating the business logic: the traditional EJB façade pattern, the newer POJO façade pattern and the Open Session in View pattern (a.ka Exposed Domain Model pattern). We describe how to implement each of these patterns and their respective benefits and drawbacks.

About Chris Richardson

Chris Richardson is a developer and architect. He is a Java Champion, a JavaOne rock star and the author of POJOs in Action, which describes how to build enterprise Java applications with frameworks such as Spring and Hibernate. Chris was also the founder of the original CloudFoundry.com, an early Java PaaS for Amazon EC2.

Today, he is a recognized thought leader in microservices and speaks regularly at international conferences. Chris is the creator of Microservices.io, a pattern language for microservices, and is the author of the book Microservices Patterns. He provides microservices consulting and training to organizations that are adopting the microservice architecture and is working on Eventuate, which is an open-source microservices collaboration platform.

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