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Elasticsearch 5.x Cookbook - Third Edition

You're reading from  Elasticsearch 5.x Cookbook - Third Edition

Product type Book
Published in Feb 2017
Publisher
ISBN-13 9781786465580
Pages 696 pages
Edition 3rd Edition
Languages
Author (1):
Alberto Paro Alberto Paro
Profile icon Alberto Paro

Table of Contents (25) Chapters

Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Dedication
Preface
1. Getting Started 2. Downloading and Setup 3. Managing Mappings 4. Basic Operations 5. Search 6. Text and Numeric Queries 7. Relationships and Geo Queries 8. Aggregations 9. Scripting 10. Managing Clusters and Nodes 11. Backup and Restore 12. User Interfaces 13. Ingest 14. Java Integration 15. Scala Integration 16. Python Integration 17. Plugin Development 18. Big Data Integration

Executing a standard search


Obviously, the most common action in Elasticsearch is searching. Elastic4s leverages the query DSL, bringing to Scala a type-safe definition for the queries. One of the most common advantages of this functionality is that, as Elasticsearch evolves, in Scala code via elastic4s, you can have deprecation or your compilation breaks, requiring you to update your code.

Getting ready

You need an up-and-running Elasticsearch installation, as we described in the Downloading and installing Elasticsearch recipe in Chapter 2, Downloading and Setup.

A Maven tool or an IDE that supports Scala programming, such as Eclipse (ScalaIDE) or IntelliJ IDEA, with the Scala plugin should be installed.

The code for this recipe can be found in the chapter_15/elastic4s_sample file and the referred class is QueryExample.

How to do it...

To execute a standard query, we will perform the following steps:

  1. We import the classes and implicits required to index and search the data:

            import com.sksamuel...
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