Consulta SQL con Hibernate Criteria

SELECT
  mes as mes,
  COUNT(mes) AS t_mes,
  SUM(total) AS totales,
  SUM(cantidad) AS cantidad,
  SUM(facturado) AS facturado,
  SUM(descuentos) AS descuentos
FROM(
  SELECT
    MONTH(p.fechaP) AS mes,
    SUM(p.montoP) AS total,
    COUNT(p.montoP) AS cantidad,
    SUM(f.montoF) AS facturado,
    SUM(f.descuentoF) AS descuentos
  FROM
    pagos p
  INNER JOIN
    factura f ON p.idFactura = f.idFactura
  WHERE
    f.estadoF = 'Pagado'
  GROUP BY
    p.fechaP
)
GROUP BY
  mes

    public List ListarPagoPTotal() {
        Criteria l = getSession().createCriteria(Pagos.class, "pagos")
                .createAlias("pagos.factura", "factura")
                .add(Restrictions.eq("factura.estadoF", "Pagado"))
                .setProjection(Projections.projectionList()
                        .add(Projections.groupProperty("usuario"))
                        .add(Projections.count("montoP").as("contador"))
                        .add(Projections.sum("montoP").as("suma"))
                        .add(Projections.sum("factura.montoF").as("facturados"))
                        .add(Projections.sum("factura.descuentoF").as("descuentos")));
        return l.list();
    }

@Entity
@Table(name = "pagos",
         catalog = "facturacion"
)
public class Pagos implements java.io.Serializable {

    private Integer idPagos;
    private Detalle detalle;
    private Factura factura;
    private Date fechaP;
    private BigDecimal montoP;
    private String usuario;

    public Pagos() {
    }

    public Pagos(Detalle detalle, Factura factura) {
        this.detalle = detalle;
        this.factura = factura;
    }

    public Pagos(Detalle detalle, Factura factura, Date fechaP, BigDecimal montoP, String usuario) {
        this.detalle = detalle;
        this.factura = factura;
        this.fechaP = fechaP;
        this.montoP = montoP;
        this.usuario = usuario;
    }

    @Id
    @GeneratedValue(strategy = IDENTITY)

    @Column(name = "idPagos", unique = true, nullable = false)
    public Integer getIdPagos() {
        return this.idPagos;
    }

    public void setIdPagos(Integer idPagos) {
        this.idPagos = idPagos;
    }

    @ManyToOne(fetch = FetchType.EAGER)
    @JoinColumn(name = "idCliente", nullable = false)
    public Detalle getDetalle() {
        return this.detalle;
    }

    public void setDetalle(Detalle detalle) {
        this.detalle = detalle;
    }

    @ManyToOne(fetch = FetchType.EAGER)
    @JoinColumn(name = "idFactura", nullable = false)
    public Factura getFactura() {
        return this.factura;
    }

    public void setFactura(Factura factura) {
        this.factura = factura;
    }

    @Temporal(TemporalType.DATE)
    @Column(name = "fechaP", length = 10)
    public Date getFechaP() {
        return this.fechaP;
    }

    public void setFechaP(Date fechaP) {
        this.fechaP = fechaP;
    }

    @Column(name = "montoP", precision = 8)
    public BigDecimal getMontoP() {
        return this.montoP;
    }

    public void setMontoP(BigDecimal montoP) {
        this.montoP = montoP;
    }

    @Column(name = "usuario", length = 15)
    public String getUsuario() {
        return this.usuario;
    }

    public void setUsuario(String usuario) {
        this.usuario = usuario;
    }

}