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ElasticSearch Cookbook

ElasticSearch Cookbook - Second Edition

By : Alberto Paro
4.1 (7)
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ElasticSearch Cookbook

ElasticSearch Cookbook

4.1 (7)
By: Alberto Paro

Overview of this book

If you are a developer who implements ElasticSearch in your web applications and want to sharpen your understanding of the core elements and applications, this is the book for you. It is assumed that you’ve got working knowledge of JSON and, if you want to extend ElasticSearch, of Java and related technologies.
Table of Contents (14 chapters)
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13
Index

Sorting data using script

ElasticSearch provides scripting support for the sorting functionality. In real world applications, there is often a need to modify the default sort by the match score using an algorithm that depends on the context and some external variables. Some common scenarios are given as follows:

  • Sorting places near a point
  • Sorting by most-read articles
  • Sorting items by custom user logic
  • Sorting items by revenue

Getting ready

You will need a working ElasticSearch cluster and an index populated with the script used in Chapter 6, Aggregations, which is available at https://github.com/aparo/elasticsearch-cookbook-second-edition.

How to do it...

In order to sort using scripting, perform the following steps:

  1. If you want to order your documents by the price field multiplied by a factor parameter (that is, sales tax), the search will be as shown in the following code:
     curl -XGET 'http://127.0.0.1:9200/test-index/test-type/_search?&pretty=true&size=3' -d '{
      &quot...
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ElasticSearch Cookbook
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