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Learning Spring Boot 2.0

You're reading from   Learning Spring Boot 2.0 Simplify the development of lightning fast applications based on microservices and reactive programming

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Product type Paperback
Published in Nov 2017
Publisher Packt
ISBN-13 9781786463784
Length 370 pages
Edition 2nd Edition
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Author (1):
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Greg L. Turnquist Greg L. Turnquist
Author Profile Icon Greg L. Turnquist
Greg L. Turnquist
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Table of Contents (11) Chapters Close

Preface 1. Quick Start with Java FREE CHAPTER 2. Reactive Web with Spring Boot 3. Reactive Data Access with Spring Boot 4. Testing with Spring Boot 5. Developer Tools for Spring Boot Apps 6. AMQP Messaging with Spring Boot 7. Microservices with Spring Boot 8. WebSockets with Spring Boot 9. Securing Your App with Spring Boot 10. Taking Your App to Production with Spring Boot

Creating custom finders

With Spring Data repositories, we are able to create queries to suit any situation. Earlier in this chapter, we saw findByName, which merely queries based on the domain object's name attribute.

The following table shows a more comprehensive collection of finders we can write with Spring Data MongoDB. To illustrate the breadth of these keywords, it presumes a domain model bigger than the Image class we defined earlier:

...

Finder Method

Description

findByLastName(...​)

Query based on lastName

findByFirstNameAndLastName(...​)

Query based on firstName and lastName

findByFirstNameAndManagerLastName(...​)

Query based on firstName and by a related manager's lastName

findTop10ByFirstName(...​) or findFirst10ByFirstName(...​)

Query based on firstName, but only return the first ten entries

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