In Elasticsearch, via nested and child documents, we can have complex data models. Elasticsearch, by default, returns only documents that match the searched type and not the nested/children one that matches the query.
The inner_hits
function is introduced in Elasticsearch 5.x to provide this functionality.
You will need an up-and-running Elasticsearch installation as used in the Downloading and installing Elasticsearch recipe in Chapter 2, Downloading and Setup.
To execute curl
via a command line, you need to install curl
for your operating system.
To correctly execute the following commands, you will need an index populated with the chapter_05/populate_query.sh
script available in the online code.