「未註冊的無效鑄造」使用boost基於序列化派生到基類

Question

我在第二次嘗試使用boost庫設置多態序列化。我將這作爲一種學習體驗，但我可能會有點頭腦發熱，我正在考慮自己重新編寫序列化代碼，而不是提升。或者切換到學習在上一篇文章中Sehe展示給我的vistor消息。

我看到的問題是 「未註冊無效投」

我使用的共享庫鏈接的升壓串行化庫

aTodo.h：

#ifndef ATODO_H 
#define ATODO_H 
#include <boost/serialization/export.hpp> 
#include <boost/archive/text_iarchive.hpp> 
#include <boost/archive/text_oarchive.hpp> 
#include <boost/serialization/unique_ptr.hpp> 

#include <boost/iostreams/device/back_inserter.hpp> 
#include <boost/iostreams/device/array.hpp> 
#include <boost/iostreams/stream.hpp> 

class aTodo{ 
    public: 
    static const unsigned _Type=0x00; 
    virtual ~aTodo(){}; 
    virtual void Do()=0; 
    virtual unsigned getInitType(){return _Type;}; 

    private: 
    friend class boost::serialization::access; 
    template <class Ar> void serialize(Ar &, unsigned){}; 
}; 
#endif 

todoExec.h：

#ifndef ATODOEXEC_H 
#define ATODOEXEC_H 
#include "aTodo.h" 
class todoExec : public aTodo{ 
    public: 
    static const unsigned _TYPE= 0x01; 
     todoExec(std::string const & command=""):_command(command){}; 
     virtual unsigned getInitType(){return _TYPE;}; 
     virtual void Do(){std::cout << "foo:" << getCommand() << std::endl;}; 
     std::string getCommand() const {return _command;}; 
    protected: 

    private: 
     friend class boost::serialization::access; 
     template <class Archive> void serilize(Archive & ar, unsigned){ 
     boost::serialization::void_cast_register<todoExec,aTodo>(); 
     boost::serialization::base_object<aTodo>(*this); 
     ar& _command; 
     } 
    std::string _command; 
}; 
#endif 

todoFactory.h：

#ifndef TODOFACTORY_H 
#define TODOFACTORY_H 

#include "todoExec.h" 
#include <memory> 
class todoFactory{ 

    todoFactory()=default; 
    public: 
     static std::unique_ptr<todoFactory> create(){return std::move(std::unique_ptr<todoFactory>(new todoFactory));}; 

     //save 
     static std::string save(std::unique_ptr<aTodo> &todoIn){ 
     std::string out; 
     { 
      boost::iostreams::stream<boost::iostreams::back_insert_device<std::string>>os(out); 
      boost::archive::text_oarchive archive(os); 

      archive << todoIn; 
     } 
     return out; 

     } 

     static std::unique_ptr<aTodo> load(std::string const &s){ 
     std::unique_ptr<aTodo> p; 
     { 
      boost::iostreams::stream<boost::iostreams::array_source> is(boost::iostreams::array_source{s.data(),s.size()}); 
      boost::archive::text_iarchive archive(is); 
      archive >> p; 
     } 
     return std::move(p); 
     } 
     std::unique_ptr<aTodo> createExec(std::string command) {return std::unique_ptr<aTodo>(new todoExec(command));}; 

}; 
#endif 

client.cpp

#include <string> 
#include <iostream> 
#include "todoFactory.h" 
BOOST_SERIALIZATION_ASSUME_ABSTRACT(aTodo) 
BOOST_CLASS_EXPORT(todoExec) 


#include <memory> 

int main(void) 
{ 
    char mtype=0x01; 
    std::string dataToSend = "ls -al /home/ajonen"; 

    auto tmpTodoFactory=todoFactory::create(); //create factory 
    auto anExecTodo=tmpTodoFactory->createExec(dataToSend); //create ExecTodo from factory 
    std::string toSend= tmpTodoFactory->save(anExecTodo); 
    return 0; 
} 

我得到的錯誤是：

terminate called after throwing an instance of 'boost::archive::archive_exception' 
    what(): unregistered void cast 8todoExec<-5aTodo 
Aborted 

Answer 1

在類todoExec你有一個錯字 - 是：serilize，應該是：serialize;因此演員沒有登記。