The document discusses domain-driven design (DDD) and its application within Jakarta EE, emphasizing how Jakarta EE's lightweight model aligns with DDD principles. It highlights the Cargo Tracker project as a relevant example for implementing DDD strategies. Additionally, it provides various resources for further exploration of DDD and Jakarta EE integration.

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Reza Rahman
Jakarta EE Ambassador, Author, Blogger, Speaker
reza_rahman@lycos.com
@reza_rahman
Applied Domain-Driven Design
Blueprints for Jakarta EE

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● J2EE popularized the idea of server-side architectures
○ J2EE Blueprints (aka “Java Pet Store”)
● J2EE Blueprints had profound impact, but not without its problems
○ Many of the paradigms are alive and well even today
○ Encumbered by the immaturity of the technology/industry
● Domain-Driven Design (DDD) emphasizes a return to the roots of object-oriented
analysis and design
● Jakarta EE’s lightweight programming model fits DDD philosophy well
○ The Cargo Tracker project completes the circle
The Cargo Tracker Project

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The Building Blocks

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Entities

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Value Objects

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Aggregates

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Repositories

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Factories

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Services

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Separating Concerns

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Interface Layer

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Application Layer

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Domain Layer

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Infrastructure

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Mapping DDD to Jakarta EE

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Interfaces

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Application Layer

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Entities

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Value Objects

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Infrastructure

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Repositories

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Bounded Context

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Jakarta EE + DDD in Action
https://eclipse-ee4j.github.io/cargotracker/

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● DDD great architectural blueprint for Java applications
● Jakarta EE very natural fit for DDD
● Cargo Tracker great place to get started with DDD and Jakarta EE
Summary

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● Cargo Tracker
○ https://eclipse-ee4j.github.io/cargotracker/
● Getting Started with Domain-Driven Design
○ https://dzone.com/refcardz/getting-started-domain-driven
● Domain-Driven Design Quickly
○ http://www.infoq.com/minibooks/domain-driven-design-quickly
● Jakarta EE Tutorial
○ https://eclipse-ee4j.github.io/jakartaee-tutorial/
● Jakarta EE Examples
○ https://github.com/eclipse-ee4j/jakartaee-examples/
Resources

26. Thank you!
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