Re: [Boost-users] [serialization] Archive reload

2 Mar 2009


      Should work without problem.

make sure you're including 

Robert Ramey

Ferllings wrote:
...
Hello,
I have a Class A with string attributes that I serialize in XML
format:
Class A {
public:
  string _nom;
  string _prenom;
  template<class Archive>
  void serialize(Archive& ar, const unsigned in version){
    ar & boost::serialization::make_nvp("Nom", _nom);
    ar & boost::serialization::make_nvp("Prenom", _prenom);
  }
}
The object is correctly saved using this code:
A _a;
void save() const
{
    ...
    oTextArchive::xml_oarchive oTextArchive(ofile);
    oTextArchive << make_nvp("A", _a);
    ...
}
But I want to reload the object, the A attributes aren't updated and
keep the previous values:
void load()
{
    ...
    iTextArchive::xml_oarchive iTextArchive(ifile);
    iTextArchive >> make_nvp("A", _a);
    ...
}
The only way I found to reload my object is to use an temporary
object:
void load()
{
    ...
    A _tmp;
    iTextArchive::xml_oarchive iTextArchive(ifile);
    iTextArchive >> make_nvp("A", _tmp);
    _a = _tmp;
    ...
}
Why can't I update the object directly?
Thanks for your help.