Quick start

In your Spring Boot project, add the dependency as shown in Installing and create a Spring service as follows:

import static io.github.queritylib.querity.api.Querity.*;
import static io.github.queritylib.querity.api.Operator.*;
import static io.github.queritylib.querity.api.Sort.Direction.*;

@Service
public class MyService {

  @Autowired
  Querity querity;

  public Result<Person> getPeople() {
    Query query = Querity.query()
        .filter(
            not(and(
                filterBy("lastName", EQUALS, "Skywalker"),
                filterBy("firstName", EQUALS, "Luke")
            ))
        )
        .sort(sortBy("lastName"), sortBy("birthDate", DESC))
        .pagination(1, 10)
        .build();
    List<Person> items = querity.findAll(Person.class, query);
    Long totalCount = querity.count(Person.class, query.getFilter());
    return new Result<>(items, totalCount);
  }

  record Result<T>(List<T> items, Long totalCount) {
  }
}

In the above example, the findAll method returns the first of n pages with max 10 elements of all people NOT named Luke Skywalker, sorted by last name and then birthdate descending.
The count method returns the total filtered items count excluding pagination (the record keyword is implemented from Java 14).

Notice the static imports to improve the readability.