The result of a jdbc query is not readable for my jasper (report dependency), but with JPA is okay

Question

SO: Debian 11
SDK: open-17 64 bit
Spring-boot-starter-data-jdbc:2.6.4
Spring-jdbc:5.3.16
HikariCP:4.0.3
Postgres 14

Hi. I try to make some pdf reports with Jasper Dependency inside of my Spring Boot project. Recently I was working with JPA, but I need to move to JDBC. I made a small report with JPA-Jasper, but try to do the same thing with JDBC-Jasper, and I have a problem with that, the type of data structure that jdbc.query is returning.

When I sout the result of the query db with JPA and JDBC respectively, I see a result like this structure: JPA ---> [{}, {}, ... {}] JDBC ---> [[], [], ... []]

Log example JPA

[Transaccion{id=1, transaccion_tipo_id=2, transaccion_estado_id=1, usuario_id=18, monto=0.0, referencia=19-0100-9, codigo_verificacion=0}, ...]

JDBC

[Transaccion[id=1, transaccion_tipo_id=2, transaccion_estado_id=1, usuario_id=18, monto=0.0, referencia=19-0100-9, codigo_verificacion=0], ...]

Here I have my data access service, using jdbc.query

@Override
    public List<Transaccion> selectTransacciones() {
        var sql = """
                SELECT id, 
                       transaccion_tipo_id,
                       transaccion_estado_id,
                       usuario_id,
                       monto,
                       referencia,
                       codigo_verificacion
                FROM procesadora.transaccion
                LIMIT 200
                """;

        return jdbcTemplate.query(sql, new TransaccionRowMapper());
    };

This is what my rawMapper is returning

import org.springframework.jdbc.core.RowMapper;

import java.sql.ResultSet;
import java.sql.SQLException;

public class TransaccionRowMapper implements RowMapper<Transaccion> {
    @Override
    public Transaccion mapRow(ResultSet resultSet, int rowNum) throws SQLException {
        return new Transaccion(
                resultSet.getLong("id"),
                resultSet.getInt("transaccion_tipo_id"),
                resultSet.getInt("transaccion_estado_id"),
                resultSet.getInt("usuario_id"),
                resultSet.getDouble("monto"),
                resultSet.getString("referencia"),
                resultSet.getString("codigo_verificacion")
        );
    }
}

Here is the transaccion Object, I use record to be make more cleaner.

public record Transaccion (Long id,
                           Integer transaccion_tipo_id,
                           Integer transaccion_estado_id,
                           Integer usuario_id,
                           Double  monto,
                           String  referencia,
                           String  codigo_verificacion) {
}

Here I create the pdf Report

@Service
public class TransaccionReporte {
    private final TransaccionService transaccionService;

    public TransaccionReporte(TransaccionService transaccionService) {

        this.transaccionService = transaccionService;
    }

    public String exportReport() throws FileNotFoundException, JRException {
        System.out.println("*** reporte begins ***");
        // bring data from db
        List<Transaccion> transaccions = transaccionService.getTransacciones();

        System.out.println(transaccions);  // <--- here I expect [{}, {}] not [[], []]
        System.out.println(transaccions.getClass());

        System.out.println("*** List transacciones done ***");
        // load file - blueprint for the pdf
        File file = ResourceUtils.getFile("classpath:transaccion.jrxml");

        System.out.println("*** Load file done ***");
        // compile it
        JasperReport jasperReport = JasperCompileManager.compileReport(file.getAbsolutePath());
        JRBeanCollectionDataSource dataSource = new JRBeanCollectionDataSource(transaccionService.getTransacciones());
    ...

I think that is not a difficult problem, but a need more information about rowMapper, jdbc and all stuff releted to that, I anybody can give me a clue I'll very appreciated.

This is the repo I working on: https://github.com/biagiola/spring-jdbc-jasper-report