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jOOQ Masterclass

You're reading from   jOOQ Masterclass A practical guide for Java developers to write SQL queries for complex database interactions

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Product type Paperback
Published in Aug 2022
Publisher Packt
ISBN-13 9781800566897
Length 764 pages
Edition 1st Edition
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Author (1):
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Anghel Leonard Anghel Leonard
Author Profile Icon Anghel Leonard
Anghel Leonard
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Table of Contents (26) Chapters Close

Preface 1. Part 1: jOOQ as a Query Builder, SQL Executor, and Code Generator
2. Chapter 1: Starting jOOQ and Spring Boot FREE CHAPTER 3. Chapter 2: Customizing the jOOQ Level of Involvement 4. Part 2: jOOQ and Queries
5. Chapter 3: jOOQ Core Concepts 6. Chapter 4: Building a DAO Layer (Evolving the Generated DAO Layer) 7. Chapter 5: Tackling Different Kinds of SELECT, INSERT, UPDATE, DELETE, and MERGE 8. Chapter 6: Tackling Different Kinds of JOINs 9. Chapter 7: Types, Converters, and Bindings 10. Chapter 8: Fetching and Mapping 11. Part 3: jOOQ and More Queries
12. Chapter 9: CRUD, Transactions, and Locking 13. Chapter 10: Exporting, Batching, Bulking, and Loading 14. Chapter 11: jOOQ Keys 15. Chapter 12: Pagination and Dynamic Queries 16. Part 4: jOOQ and Advanced SQL
17. Chapter 13: Exploiting SQL Functions 18. Chapter 14: Derived Tables, CTEs, and Views 19. Chapter 15: Calling and Creating Stored Functions and Procedures 20. Chapter 16: Tackling Aliases and SQL Templating 21. Chapter 17: Multitenancy in jOOQ 22. Part 5: Fine-tuning jOOQ, Logging, and Testing
23. Chapter 18: jOOQ SPI (Providers and Listeners) 24. Chapter 19: Logging and Testing 25. Other Books You May Enjoy

Exporting data

Exporting (or formatting) data is achievable via the org.jooq.Formattable API. jOOQ exposes a suite of format() and formatFoo() methods that can be used to format Result and Cursor (remember fetchLazy() from Chapter 8, Fetching and Mapping) as text, JSON, XML, CSV, XML, charts, and INSERT statements. As you can see in the documentation, all these methods come in different flavors capable of exporting data into a string or a file via the Java OutputStream or Writer APIs.

Exporting as text

I'm sure that you have already seen in your console output something similar to the following:

Figure 10.1 – Tabular text data

This textual tabular representation can be achieved via the format() method. A flavor of this method takes an integer argument representing the maximum number of records to include in the formatted result (by default, jOOQ logs just the first five records of the result formatted via jOOQ's text export, but we can...

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