public bool eliminarTransporte(int id, string schema)
 {
     try
     {
         return(TransporteDAO.getInstance().eliminarTransporte(id, schema));
     }
     catch (Exception e)
     {
         throw e;
     }
 }
 public bool updateTransporte(int id, string nombre, DateTime fecha, string schema)
 {
     try
     {
         return(TransporteDAO.getInstance().updateTransporte(id, nombre, fecha, schema));
     }
     catch (Exception e)
     {
         throw e;
     }
 }
 public bool nuevoTransporteCliente(int id_cliente, Transporte transporte, string schema, NpgsqlConnection conexion)
 {
     try
     {
         return(TransporteDAO.getInstance().nuevoTransporteCliente(id_cliente, transporte, schema, conexion));
     }
     catch (Exception e)
     {
         throw e;
     }
 }
 public string nuevoTransporte(Transporte transporte, string schema)
 {
     try
     {
         return(TransporteDAO.getInstance().nuevoTransporte(transporte, schema));
     }
     catch (Exception e)
     {
         throw e;
     }
 }
 public List <Transporte> listaTransportesCliente(int id_cliente, string schema, NpgsqlConnection conexion)
 {
     try
     {
         return(TransporteDAO.getInstance().listaTransportesCliente(id_cliente, schema, conexion));
     }
     catch (Exception e)
     {
         throw e;
     }
 }
 public List <Transporte> listaTransportes(string schema)
 {
     try
     {
         return(TransporteDAO.getInstance().listaTransportes(schema));
     }
     catch (Exception e)
     {
         throw e;
     }
 }