Re: [Boost-users] serialization std::map

Subject: Re: [Boost-users] serialization std::map
From: Robert Ramey (ramey_at_[hidden])
Date: 2009-07-16 21:33:58

compiled for me on msvc 7.1

Robert Ramey

Adam Szeliga wrote:
> Why I can not input from archive std::map ?
>
> line: inputArchive >> inputContainer causes compile error:
>
> Thanks
> Adam
>
> #include <string>
> #include <iostream>
> #include <fstream>
> #include <sstream>
> #include <map>
> #include <boost/serialization/map.hpp>
> #include <boost/serialization/serialization.hpp>
> #include <boost/serialization/string.hpp>
> #include <boost/serialization/level.hpp>
> #include <boost/serialization/tracking.hpp>
> #include <boost/serialization/split_free.hpp>
> #include <boost/serialization/base_object.hpp>
> #include <boost/archive/text_iarchive.hpp>
> #include <boost/archive/text_oarchive.hpp>
> #include <boost/archive/text_wiarchive.hpp>
> #include <boost/archive/text_woarchive.hpp>
>
> class A
> {
> public:
>    A() {};
>    A(std::string const & s):
>        s(s)
>    {
>    }
>
>    virtual ~A() {};
>
> private:
>    std::string s;
>
>    friend std::ostream & operator<<(std::ostream & os, A const & a);
>
>    friend class boost::serialization::access;
>    template<class Archive>
>    void serialize(Archive & archive, unsigned int const version)
>    {
>        archive & s;
>    }
> };
>
> std::ostream & operator<<(std::ostream & os, A const & a)
> {
>    return os << a.s;
> }
>
> typedef std::map<unsigned int const, A * const> Container;
>
> BOOST_CLASS_TRACKING(Container, boost::serialization::track_never);
>
> std::ostream & operator<<(std::ostream & os, Container const &
> container) {
>    Container::const_iterator end = container.end();
>    for (Container::const_iterator i = container.begin(); i != end;
>    ++i) {
>        os << "(" << i->first << "," << *i->second << ")" << std::endl;
>    }
>    return os;
> }
>
> int _tmain(int argc, _TCHAR* argv[])
> {
>    std::cout << "serialization map test starts" << std::endl;
>
>    Container outputContainer;
>
>    outputContainer.insert(std::make_pair(1, new A("one")));
>    outputContainer.insert(std::make_pair(4, new A("four")));
>    outputContainer.insert(std::make_pair(2, new A("two")));
>
>    std::cout << outputContainer << std::endl;
>
>    {
>        std::wofstream outputFile("data.txt");
>        boost::archive::text_woarchive outputArchive(outputFile);
>
>        outputArchive << outputContainer;
>    }
>
>    std::cout << "---------------------------" << std::endl;
>
>    Container inputContainer;
>    {
>        std::wifstream inputFile("data.txt");
>        boost::archive::text_wiarchive inputArchive(inputFile);
>
>        inputArchive >> inputContainer; // this line causes compile
>    error }
>
>    std::cout << inputContainer << std::endl;
>
>    std::cout << "serialization map test ends" << std::endl;
>
>    return 0;
> }