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jOOQ Masterclass

You're reading from  jOOQ Masterclass

Product type Book
Published in Aug 2022
Publisher Packt
ISBN-13 9781800566897
Pages 764 pages
Edition 1st Edition
Languages
Author (1):
Anghel Leonard Anghel Leonard
Profile icon Anghel Leonard

Table of Contents (26) Chapters

Preface 1. Part 1: jOOQ as a Query Builder, SQL Executor, and Code Generator
2. Chapter 1: Starting jOOQ and Spring Boot 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

Fetching via JDBC ResultSet

jOOQ is an extremely versatile and transparent tool. For instance, jOOQ acts as a wrapper for JDBC ResultSet but also allows us to access it directly and even provide support to do this smoothly and painlessly. Practically, we can do the following:

  • Execute a ResultQuery with jOOQ, but return a JDBC ResultSet (this relies on the fetchResultSet() method).
  • Transform the jOOQ Result object into a JDBC ResultSet (this relies on the intoResultSet() method).
  • Fetch data from a legacy ResultSet using jOOQ.

All three of these bullets are exemplified in the bundled code. However, here, let's consider the second bullet that starts with the following jOOQ query:

// Result<Record2<String, BigDecimal>>
var result = ctx.select(CUSTOMER.CUSTOMER_NAME,  
   CUSTOMER.CREDIT_LIMIT).from(CUSTOMER).fetch();

We understand that the returned result is a jOOQ-specific Result that was built automatically from the...

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