Are you tired of Hibernate? Is GORM is too heavy for your current project? Do you like having more control over your SQL? Do you like flexible DSLs? Try JOOQ! JOOQ (Java Object Oriented Querying) is light-weight alternative to classic data access solutions or ORMs like Hibernate, JPA, JDBC, and GORM. JOOQ's goal is to give the developer a flexible DSL for building typesafe, database agnostic SQL queries, and attempts to convince the developer of a ‘database-first’ approach to building their application. In this talk we’ll quickly present an introduction to JOOQ from a high level, discuss its features, and see several examples of how we’re using JOOQ to great effect with many Spring Boot and Ratpack apps within our platform.

1. An Introduction to JOOQ
(or, Long Live SQL)
Steve Pember
@svpember
Gr8Conf US, 2016
THIRDCHANNEL @svpember

2. You may
find this to
be terribly
boring.

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Agenda
• Growing beyond Object Relational Mappers
• An Introduction to jOOQ
• What We’ve Learned (A.K.A. jOOQ and Groovy)
• Demo / Code Samples

5. The Case
for SQL

6. ORMs are Unnecessary

7. This debate
is not new.

9. ORMs Can Save You Time…

10. JPA,
anyone?

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12. … but they have flaws.

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ORM Difficulties
• Object / Relational Impedance Mismatch

14. Objects: identity, state, behavior
RDBMS: attribute storage,
retrieved by predicate logic

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ORM Difficulties
• Object / Relational Impedance Mismatch
• ORM Oriented Schema Design

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20. Wonderful.

21. Single Table vs Multi Table
Inheritance

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ORM Difficulties
• Object / Relational Impedance Mismatch
• ORM Oriented Schema Design
• Trouble with Complicated Queries

23. E.G. Criteria, HQL , @Query, etc.

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ORM Difficulties
• Object / Relational Impedance Mismatch
• ORM Oriented Schema Design
• Trouble with Complicated Queries
• Resource Usage

26. Maintain That Entity Graph

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ORM Difficulties
• Object / Relational Impedance Mismatch
• ORM Oriented Schema Design
• Trouble with Complicated Queries
• Resource Usage
• Performance

29. To Re-phrase My Original Point:

30. ORMs Make
You Weak

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32. SQL makes
you Strong

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So What To Do?

34. How about some raw JDBC?!

35. Problems?

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What Was Wrong?

38. Enter:
jOOQ!

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Agenda
• Growing beyond Object Relational Mappers
• An Introduction to jOOQ

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jOOQ (Intro)
• Library for SQL interaction

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jOOQ (Intro)
• Library for SQL interaction
• For people not afraid of SQL

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jOOQ (Intro)
• Library for SQL interaction
• For people not afraid of SQL
• The jOOQ authors LOVE SQL

44. And they are eager to help

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jOOQ (Intro)
• Library for SQL interaction
• For people not afraid of SQL
• The jOOQ authors LOVE SQL
• Database should drive internal models

46. jOOQ Features

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jOOQ (Features)
• Type-Safe SQL

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jOOQ (Features)
• Type-Safe SQL
• Fluent API

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jOOQ (Features)
• Type-Safe SQL
• Fluent API
• Code Generation

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53. –Johnny Appleseed
“Type a quote here.”

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jOOQ (Features)
• Type-Safe SQL
• Fluent API
• Code Generation
• Active Record

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jOOQ (Features)
• Type-Safe SQL
• Fluent API
• Code Generation
• Active Record
• Full SQL Support

57. Even Vendor
Specific
Operations?

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jOOQ (Features)
• Type-Safe SQL
• Fluent API
• Code Generation
• Active Record
• Full SQL Support
• Native Support of Stored Procedures

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jOOQ (Features)
• Type-Safe SQL
• Fluent API
• Code Generation
• Active Record
• Full SQL Support
• Native Support of Stored Procedures
• Open Source and Free

60. Unless You’re Using Oracle…

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Code Overview

63. Don’t want to take up too much
of your time…

64. But let’s talk about Fetching

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Fetch
• fetchOne

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Fetch
• fetchOne
• fetchAny

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Fetch
• fetchOne
• fetchAny
• fetchLazy

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Fetch
• fetchOne
• fetchAny
• fetchLazy
• fetchLater

73. fetchLater -> returns a
Promise… but is gone in 4.0

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Fetch
• fetchOne
• fetchAny
• fetchLazy
• fetchLater
• fetchMany

75. fetchMany() -> you have stored
procedures with multiple result
sets

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Fetch
• fetchOne
• fetchAny
• fetchLazy
• fetchLater
• fetchMany
• fetchInto

77. fetchInto() is quite flexible

78. Fetch into Records!
Fetch into POGOs!

79. Fetching into POGOs keeps
layers separate

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82. –Johnny Appleseed
“Type a quote here.”

83. And with Java 8…

84. Fetch Into
Streams!

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Agenda
• Growing beyond Object Relational Mappers
• An Introduction to jOOQ
• What We’ve Learned (A.K.A. jOOQ and Groovy)

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What We’ve Learned
• Code Generation is Not Mandatory

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What We’ve Learned
• Code Generation is Not Mandatory
• jOOQ Does Not Manage Transactions For You!

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What We’ve Learned
• Code Generation is Not Mandatory
• jOOQ Does Not Manage Transactions For You!
• Import / Export Direct to CSV

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What We’ve Learned
• Code Generation is Not Mandatory
• jOOQ Does Not Manage Transactions For You!
• Import / Export Direct to CSV
• Easy & Clear Logging

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What We’ve Learned
• Code Generation is Not Mandatory
• jOOQ Does Not Manage Transactions For You!
• Import / Export Direct to CSV
• Easy & Clear Logging
• Binders / Casting

93. –Johnny Appleseed
“Type a quote here.”

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What We’ve Learned
• Code Generation is Not Mandatory
• jOOQ Does Not Manage Transactions For You!
• Import / Export Direct to CSV
• Easy & Clear Logging
• Binders / Casting
• jOOQ & CompileStatic

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Agenda
• Growing beyond Object Relational Mappers
• An Introduction to jOOQ
• What We’ve Learned (A.K.A. jOOQ and Groovy)
• Demo / Code Samples

99. Thank You!
Steve Pember
@svpember
THIRDCHANNEL @svpember

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More Info
• jOOQ Blog: https://blog.jooq.org/
• Vietnam of Computer Science: http://blogs.tedneward.com/post/the-vietnam-of-computer-science/
• Fluent API: http://martinfowler.com/bliki/FluentInterface.html
• jOOQ Gradle Plugin: https://github.com/etiennestuder/gradle-jooq-plugin
• Code Demo: https://github.com/spember/jooq-demo

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Images
• Brave Puffin: https://memegenerator.net/instance/63187852
• Weak(Gravity Falls): http://giphy.com/gifs/weak-gravity-falls-sTm3FmD7knvO0
• Strong (Spongebob): http://www.reactiongifs.com/strongbob/?utm_source=rss&utm_medium=rss&utm_campaign=strongbob
• Andy Dwyer (No Idea): http://memecaptain.com/gend_image_pages/iepvqA
• Atticus Finch: http://www.latimes.com/entertainment/movies/la-et-mn-atticus-white-savior-20150715-story.html
• Yikes (Adam Scott): http://giphy.com/gifs/awkward-yikes-adam-scott-srFijDgoNj008
• Suspicious Fry: http://imgur.com/gallery/OCcno
• Strong (Spongebob): http://www.reactiongifs.com/strongbob/?utm_source=rss&utm_medium=rss&utm_campaign=strongbob