Planned lessonJNR-013-L07

Demo: building the products feature layer by layer

On This Lesson 3 topics

This lesson is planned. The outline below lists the topics it will cover. The full lesson has not been published yet.

In this lesson

build GET /products and GET /products/{id}; prepares JNR-013-LAB1.

Draft outline details

Create the Product domain class and ProductRepository interface.
Implement InMemoryProductRepository with a Map and sample data.
Write ProductService with list() and get(id).
Planned mistake: put the "not found" decision and a price calculation in the controller. Fix: move both into the service; the controller only delegates.
Write ProductController, run the app, and call both endpoints with curl.

Apply this lesson with the module's lab, exercises and quiz.

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