[Boost-users] [serialization] Difficulty getting serialization to work.

14 Jul 2006

      Hi,

I am experiencing difficulties in getting the Boost serialization 
library to work. There seems to be an error related to object tracking, 
as I am getting BOOST_STATIC_ASSERTION_FAILURE<x>. I am trying to figure 
it out using the attached test code. The documentation claims I should 
be putting a BOOST_SERIALIZATION_TRACKING() macro in my file (presumably 
directly after my class definition). I did a full text search over the 
entire source of the library and nowhere did this preprocessor macro 
exist. There is a BOOST_CLASS_TRACKING() macro, which I tried putting in 
my source with tracking_never. That seems to have made no appreciable 
difference.

I have absolutely no idea what I am supposed to do. :(
Any help would be appreciated.

Thanks,
~ Dieter Buys

#include <fstream>

#include <boost/shared_ptr.hpp>

#include <boost/serialization/serialization.hpp>
#include <boost/serialization/tracking.hpp>
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>

class gps_position
{
private:
	friend class boost::serialization::access;

	template<class Archive>
	void serialize(Archive & ar, const unsigned int version)
	{
		ar & degrees;
		ar & minutes;
		ar & seconds;
	}

	int degrees;
	int minutes;
	float seconds;

public:
	gps_position() {};
	gps_position(int d, int m, float s) : degrees(d), minutes(m), seconds(s) {}
};
// BOOST_CLASS_TRACKING(gps_position, track_never)

int main(void)
{
	std::ofstream ofs("serial.txt");

	gps_position *g = new gps_position(35, 59, 24.567f);
//	const gps_position g(35, 59, 24.567f);
	{
		boost::archive::text_oarchive oa(ofs);
		oa << g;
	}
	delete g;

	gps_position *newg;
//	gps_position newg;
	{
		std::ifstream ifs("serial.txt", std::ios::binary);
		boost::archive::text_iarchive ia(ifs);
		ia >> newg;
	}
	delete newg;

	return 0;
}