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jOOQ Masterclass

jOOQ Masterclass

By : Anghel Leonard
4.6 (5)
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jOOQ Masterclass

jOOQ Masterclass

4.6 (5)
By: Anghel Leonard

Overview of this book

jOOQ is an excellent query builder framework that allows you to emulate database-specific SQL statements using a fluent, intuitive, and flexible DSL API. jOOQ is fully capable of handling the most complex SQL in more than 30 different database dialects. jOOQ Masterclass covers jOOQ from beginner to expert level using examples (for MySQL, PostgreSQL, SQL Server, and Oracle) that show you how jOOQ is a mature and complete solution for implementing the persistence layer. You’ll learn how to use jOOQ in Spring Boot apps as a replacement for SpringTemplate and Spring Data JPA. Next, you’ll unleash jOOQ type-safe queries and CRUD operations via jOOQ’s records, converters, bindings, types, mappers, multi-tenancy, logging, and testing. Later, the book shows you how to use jOOQ to exploit powerful SQL features such as UDTs, embeddable types, embedded keys, and more. As you progress, you’ll cover trending topics such as identifiers, batching, lazy loading, pagination, and HTTP long conversations. For implementation purposes, the jOOQ examples explained in this book are written in the Spring Boot context for Maven/Gradle against MySQL, Postgres, SQL Server, and Oracle. By the end of this book, you’ll be a jOOQ power user capable of integrating jOOQ in the most modern and sophisticated apps including enterprise apps, microservices, and so on.
Table of Contents (26 chapters)
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1
Part 1: jOOQ as a Query Builder, SQL Executor, and Code Generator
4
Part 2: jOOQ and Queries
11
Part 3: jOOQ and More Queries
16
Part 4: jOOQ and Advanced SQL
22
Part 5: Fine-tuning jOOQ, Logging, and Testing

Handling embeddable types

Embeddable types represent a powerful feature introduced in jOOQ 3.14. Roughly, this feature gets materialized in synthetic UDTs that can be used with all databases supported by jOOQ. While PostgreSQL and Oracle support UDTs (we can use UDTs directly in Data Definition Language (DDL)), other databases including MySQL and SQL Server don't support UDTs. But via jOOQ embeddable types, we can work at the application level with synthetic UDTs for any database, and jOOQ will take care of the underlying aspects of mapping these types to the database.

An embeddable type mimics a UDT by synthetically wrapping one (usually more) database column in a generated org.jooq.EmbeddableRecord. For instance, we can wrap OFFICE.CITY, OFFICE.STATE, OFFICE.COUNTRY, OFFICE.TERRITORY, and OFFICE.ADDRESS_LINE_FIRST under an embeddable type named OFFICE_FULL_ADDRESS via the following configuration in the jOOQ Code Generator (here, for MySQL):

<embeddable>
 <!-...
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