PostgresqlConnectionFactory connectionFactory = new PostgresqlConnectionFactory(PostgresqlConnectionConfiguration.builder()

        .host(…)

        .database(…)

        .username(…)

        .password(…).build());

​

R2dbcEntityTemplate template = new R2dbcEntityTemplate(connectionFactory);

​

Mono<Integer> update = template.update(Person.class)

                .inTable("person_table")

                .matching(query(where("firstname").is("John")))

                .apply(update("age", 42));

​

Flux<Person> all = template.select(Person.class)

            .matching(query(where("firstname").is("John")

                .and("lastname").in("Doe", "White"))

              .sort(by(desc("id"))))

            .all();