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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

jOOQ logging

By default, you'll see the jOOQ logs at the DEBUG level during code generation and during queries/routine execution. For instance, during a regular SELECT execution, jOOQ logs the query SQL string (with and without the bind values), the first 5 records from the fetched result set as a nice formatted table, and the size of the result is set as shown in the following figure:

Figure 19.1 – A default jOOQ log for a SELECT execution

This figure reveals a few important aspects of jOOQ logging. First of all, the jOOQ logger is named org.jooq.tools.LoggerListener and represents an implementation of the ExecuteListener SPI presented in Chapter 18, jOOQ SPI (Providers and Listeners). Under the hood, LoggerListener uses an internal abstraction (org.jooq.tools.JooqLogger) that attempts to interact with any of the famous loggers, sl4j, log4j, or the Java Logging API (java.util.logging). So, if your application uses any of these loggers, jOOQ...

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