Building a query

Before a search, a query must be built. Elasticsearch provides several ways to build these queries. In this recipe, we will learn how to create a query object via QueryBuilder and simple strings.

Getting ready

You need an up-and-running Elasticsearch installation, which you can get as described in the Downloading and installing Elasticsearch recipe in Chapter 1, Getting Started.

A Maven tool or an IDE that natively supports it for Java programming, such as Visual Studio Code, Eclipse, or IntelliJ IDEA, must be installed.

The code for this recipe is in the ch13/elasticsearch-java-client directory and the referred class is QueryCreation.

How to do it...

To create a query, we will perform the following steps:

1. We need to import SearchRequest using the following code:

   import co.elastic.clients.elasticsearch.core.SearchRequest;

2. Next, we'll create a query using SearchRequest, as follows:

   SearchRequest searchRequest = new SearchRequest.Builder...