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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

Chapter 2: Customizing the jOOQ Level of Involvement

In the previous chapter, we introduced jOOQ in a Spring Boot application and used it for generating and executing a valid non-type-safe SQL statement. In this chapter, we will continue this journey and increase the jOOQ level of involvement via an astonishing feature – the so-called jOOQ Code Generator. In other words, jOOQ will be in control of the persistence layer via a straightforward flow that begins with type-safe queries, continues by generating Plain Old Java Objects (POJOs) used to map the query results as objects, and ends with generating DAOs used to shortcut the most common queries in object-oriented style.

By the end of this chapter, you'll know how to write type-safe queries, and how to instruct jOOQ to generate POJOs and DAOs that have custom names in Java and Kotlin applications, using Maven and Gradle. We will cover these topics declaratively (for instance, in XML files) and programmatically.

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