02 JPA Basics

• Learning objectives for the week (JPA Basics)

On 2nd semester we install Postgres 16.2 and PgAdmin in Docker Containers on our local machines. If you have lost the installation - or want a fresh beginning, please follow the guide here: Setting up Postgres on Localhost.

• Groups and meeting times can be found on Moodle.
• Topic of the meeting: present your portfolio project ideas

• What is ORM?
• What is JPA?

• Getting to know Lombok - Warm up
• Points Exercise - Your first JPA projects
• Unicorn JPA CRUD - Scale it up a bit
• Unicorn Snippets

CodeLab exercises on JPA. All day is devoted to pair programming.

• CodeLab

• What is the DAO design pattern?
• EntityManager documentation (skim)

• Java annotations. Get an introduction to Java annotations to get a better understanding of what on earth a annotation is.

• JPQL
• Books DB CRUD and JPQL

Goal: Get started on your portfolio project and create the first entity with JPA CRUD operations.

• Setting up Postgres on Localhost
• EntityManager
• JPA setup in IntelliJ
• JPA Annotations
• JPA CRUD examples
• JPA JPQL queries
• Extra Resources