Re: [Boost-users] Serializing a Method

7 Oct 2007

      at forum wrote:
...
On 10/5/07, Robert Ramey  wrote:
...
a) I don't see a serialize function for Action.  Until this exists,
it's not a serializble type.  Hence it will not compile.
Ok thank you.
...
b) The following is not symetrical and this is almost always a
programmer error
...
oa << BOOST_SERIALIZATION_NVP(this);
...
ia >> BOOST_SERIALIZATION_NVP(*this);
I know that, but if I put
oa << BOOST_SERIALIZATION_NVP(*this); I get a run time error, and when
I put ia >> BOOST_SERIALIZATION_NVP(this) I get a run time error.
If I do my save and load fucntion output my class, its ok and I can
have symetrical Serialize.
any Idea?
BOOST_SERIALIZATION_NVP(this) is not suitable for "this"

I believe you want something like:

void Save(const char * filename, const CASetMemberCommand 
&c)
{
std::ofstream ofs(filename);
assert(ofs.good());
boost::archive::xml_oarchive oa(ofs);
oa << BOOST_SERIALIZATION_NVP(c);
}

void Load( const char * filename, CASetMemberCommand & c)
{
std::ifstream ifs(filename);
assert(ifs.good());
boost::archive::xml_iarchive ia(ifs);
ia >> BOOST_SERIALIZATION_NVP(c);
}

int main(int argc, char *argv[])
{

gps_position pos(32,52,25.0f);
CASetMemberCommand cmd(&pos,&gps_position::SetMinutes,25);
CASetMemberCommand 
cmd4(&pos,&gps_position::SetDegrees,25);
cmd.Execute();
SaveCommand(cmd,"D:/test.xml");

Save("D:/Test2.xml", cmd);
CASetMemberCommand cmd2;
Load("D:/Test2.xml", cmd);

return 0;
}

or maybe something simpler like:

int main(int argc, char *argv[])
{

gps_position pos(32,52,25.0f);
const CASetMemberCommand 
cmd(&pos,&gps_position::SetMinutes,25);
cmd.Execute();

{
std::ofstream ofs("D:/test.xml"););
assert(ofs.good());
boost::archive::xml_oarchive oa(ofs);
oa << BOOST_SERIALIZATION_NVP(cmd);
}

CASetMemberCommand cmd2;
{
std::ifstream ifs("D:/test.xml");
assert(ifs.good());
boost::archive::xml_iarchive ia(ifs);
ia >> BOOST_SERIALIZATION_NVP(cmd2);
}

return 0;
}