Re: [Boost-users] [Serialization] Can I load two object from oneinput file?

2 Jan 2008


      ...
#include <iostream>
#include <fstream>
#include 
#include 
#include 
//----------------------------------------------------------------------------
using namespace std;
//----------------------------------------------------------------------------
class A
{
   private:
       friend class boost::serialization::access;
       template<class Archive>
           void serialize(Archive & ar, const unsigned int version)
           {
               ar & a;
               ar & b;
           }
public:
       int a;
       int b;
};
//----------------------------------------------------------------------------
class B
{
   private:
       friend class boost::serialization::access;
       template<class Archive>
           void serialize(Archive & ar, const unsigned int version)
           {
               ar & ms;
               ar & a;
           }
   public:
public:
       B( const string& s ) : ms( s ){}
       void print(){ cout << ms << endl; }
   private:
       B(){} // use by serialization only
       string ms;
       A a;
};
//----------------------------------------------------------------------------
int main()
{
    // Save
   A* pa = new A;
Rather than put your program on my debugger, here is the way I anticipated 
that the library would be used:

   pa->a = 3;
   pa->b = 5;

   B* pb = new B( "this is test B" );

  {
        std::ofstream ofs( "all.out" );
        boost::archive::text_oarchive oa(ofs);

        oa << pa;
        ob << pb;

        delete pa;
        delete pb;
    }
   A* paa;
   B* pbb
    {
        std::ifstream ifs( "all.out", std::ios::binary );

        boost::archive::text_oarchive ia(ifs);
        ia >> paa;
        ia >> pbb;
    }

    cout << "A: " << paa->a << " " << paa->b << endl;
    pbb->print();

    delete paa;
    delete pbb;
     return 0;
}

Robert Ramey