Query API

Apache Ignite offers an elegant query API with the following components: predicate-based ScanQuery, ANSI 99-compliant SQL query, and Lucene index-based text query. In this section, we will examine the query API.

ScanQuery

Apache Ignite's key-value pair API is used to store objects in a cache and retrieve values using keys. Apache Ignite's query API lets us query objects using expressions. The ScanQuery API allows us to execute distributed queries over cache objects. We are going to create a cache, populate it with a collection of objects, and then use ScanQuery to retrieve them. Follow these steps to try out the ScanQuery API:

1. Create a class, Player, with the following members:

      public class Player...