Subject: [Serialization] Why is it not possible to serialize this structure through a pointer?
Hello, I have the following struct: struct CUBE_INFO { friend class boost::serialization::access; long cube; std::string ncube; UINT number_dimensions; DIMENSION_LIST dimensions; long double number_cells; long double number_filled_cells; enum STATUS { UNLOADED = 0, LOADED, CHANGED } status; enum TYPE { NORMAL = 0, SYSTEM, ATTRIBUTE } type; friend std::istream& operator>>( std::istream& in, CUBE_INFO& cubeInfo ); friend std::ostream& operator<<( std::ostream& out, const CUBE_INFO& cubeInfo ); private: template<class Archive> void serialize( Archive &ar, const unsigned int version ) { ar & cube; ar & dimensions; ar & ncube; ar & number_cells; ar & number_dimensions; ar & number_filled_cells; ar & status; ar & type; } }; here, DIMENSION_LIST is an STL-vector of longs. I am including #include <boost/serialization/vector.hpp> #include <boost/serialization/access.hpp> I try to comple the code below (MS VisualStudio 8, boost 1.34) #include <fstream> #include <boost/archive/text_oarchive.hpp> #include <boost/archive/text_iarchive.hpp> #include <string> #include "../Palo/Cache/AbstractCache.h" #include "../Palo/Cache/CubeCache.h" #include "../Palo/Cache/CubesCache.h" #include "../Palo/types.h" using namespace jedox::palo; int main(int argc, char* argv[]) { //string filename("SerializeTest"); CUBE_INFO* c = new CUBE_INFO(); std::ofstream ofs("filename"); //std::ofstream ofs("filename" ); // save data to archive { boost::archive::text_oarchive oa( ofs ); // write class instance to archive oa << ( c ); // archive and stream closed when destructors are called } return 0; } The resulting error message is:
f:\lib\x32\include\boost\archive\detail\oserializer.hpp(567) : error C2027: use of undefined type 'boost::STATIC_ASSERTION_FAILURE<x>' 1> with 1> [ 1> x=false 1> ] 1> f:\lib\x32\include\boost\archive\basic_text_oarchive.hpp(78) : see reference to function template instantiation 'void boost::archive::save<Archive,T>(Archive &,T &)' being compiled 1> with 1> [ 1> Archive=boost::archive::text_oarchive, 1> T=jedox::palo::CUBE_INFO * 1> ]
regards, Oliver
"Oliver Kania" <kania.oliver@googlemail.com> wrote in message news:1262c4ee0708070930u79c86b99v471754c1731d9e9c@mail.gmail.com... Hello, I have the following struct: struct CUBE_INFO { friend class boost::serialization::access; long cube; std::string ncube; UINT number_dimensions; DIMENSION_LIST dimensions; long double number_cells; long double number_filled_cells; enum STATUS { UNLOADED = 0, LOADED, CHANGED } status; enum TYPE { NORMAL = 0, SYSTEM, ATTRIBUTE } type; friend std::istream& operator>>( std::istream& in, CUBE_INFO& cubeInfo ); friend std::ostream& operator<<( std::ostream& out, const CUBE_INFO& cubeInfo ); private: template<class Archive> void serialize( Archive &ar, const unsigned int version ) { ar & cube; ar & dimensions; ar & ncube; ar & number_cells; ar & number_dimensions; ar & number_filled_cells; ar & status; ar & type; } }; here, DIMENSION_LIST is an STL-vector of longs. I am including #include <boost/serialization/vector.hpp> #include <boost/serialization/access.hpp> I try to comple the code below (MS VisualStudio 8, boost 1.34) #include <fstream> #include <boost/archive/text_oarchive.hpp> #include <boost/archive/text_iarchive.hpp> #include <string> #include "../Palo/Cache/AbstractCache.h" #include "../Palo/Cache/CubeCache.h" #include "../Palo/Cache/CubesCache.h" #include "../Palo/types.h" using namespace jedox::palo; int main(int argc, char* argv[]) { //string filename("SerializeTest"); CUBE_INFO * const c = new CUBE_INFO(); // add "const" here - see rationale in documentation std::ofstream ofs("filename"); //std::ofstream ofs("filename" ); // save data to archive { boost::archive::text_oarchive oa( ofs ); // write class instance to archive oa << ( c ); // archive and stream closed when destructors are called } return 0; } The resulting error message is:
f:\lib\x32\include\boost\archive\detail\oserializer.hpp(567) : error C2027: use of undefined type 'boost::STATIC_ASSERTION_FAILURE<x>' 1> with 1> [ 1> x=false 1> ] 1> f:\lib\x32\include\boost\archive\basic_text_oarchive.hpp(78) : see reference to function template instantiation 'void boost::archive::save<Archive,T>(Archive &,T &)' being compiled 1> with 1> [ 1> Archive=boost::archive::text_oarchive, 1> T=jedox::palo::CUBE_INFO * 1> ]
regards, Oliver ------------------------------------------------------------------------------ _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users
Oliver Kania-3 wrote:
int main(int argc, char* argv[]) { //string filename("SerializeTest"); CUBE_INFO* c = new CUBE_INFO(); std::ofstream ofs("filename"); //std::ofstream ofs("filename" ); // save data to archive { boost::archive::text_oarchive oa( ofs ); // write class instance to archive oa << ( c ); // archive and stream closed when destructors are called } return 0; }
Hello, I've been playing with this all day and I was confused about this very same problem. Try serializing a const pointer. This sort of thing worked for me: int main(int argc, char* argv[]) { //string filename("SerializeTest"); CUBE_INFO* c = new CUBE_INFO(); std::ofstream ofs("filename"); //std::ofstream ofs("filename" ); // save data to archive { boost::archive::text_oarchive oa( ofs ); // write class instance to archive const CUBE_INFO* to_serialize = c; oa << ( *to_serialize ); // archive and stream closed when destructors are called } return 0; } I'm not sure why yet, I'm looking into it right now. Hopefully that will help though! Jeshua Bratman -- View this message in context: http://www.nabble.com/Subject%3A--Serialization--Why-is-it-not-possible-to-s... Sent from the Boost - Users mailing list archive at Nabble.com.
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Jeshua Bratman -
Oliver Kania -
Robert Ramey