Артем Килеев

import javax.xml.datatype.DatatypeFactory;
import java.util.GregorianCalendar;

GregorianCalendar calendar = new GregorianCalendar();
DatatypeFactory.newInstance().newXMLGregorianCalendar(calendar);

@Configuration
public class DAOConfig {
     @Bean
     public UserDAO userDAO() {
          return new UserDAO();
     }
}

<bean id="userDAO" class="com.example.dao.UserDAO">
    <!-- конфигурация bean UserDAO -->
</bean>

CREAT INDEX index_name ON tablename (column_name DESC NULLS LAST)
CLUSTER tablename USING index_name