序列化包含指针向量的对象向量 [英] Serializing Vector of Objects which contains Vectors of Pointers

问题描述

我有3个班级(领导者"，研究人员"，工人")，这些班级均来自基本班级团队".

I have 3 classes ("Leader", "Researchers", "Workers") which all derive from a base-class "Team".

我有一个项目"类，其中包含指向不同团队的指针的向量.

I have a class "Project" which contains a vector of pointers to different Teams.

我在所有类声明中都以此顺序使用以下所有标头:

I use all of the following headers, in this order, in all of my class declarations:

#include <sstream>
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
#include <boost/serialization/serialization.hpp>
#include <boost/serialization/export.hpp>
#include <boost/serialization/vector.hpp>
#include <boost/serialization/version.hpp>
#include <boost/serialization/split_member.hpp>

要(反)序列化我使用的Team对象:

To (de)serialize the Team object I use:

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

  template <typename Archive>
  void serialize(Archive& ar, const unsigned int /*version*/)
  {
      ar & teamname ;
  }

要(反)序列化我使用的领导者，研究人员和工人对象:

To (de)serialize the Leader, Researchers, Workers objects I use:

typedef Team _super;

friend class boost::serialization::access ;

template <typename Archive>
void serialize(Archive& ar, const unsigned int /*version*/)
{
    ar & boost::serialization::base_object<_super>(*this) ;
    ar & contactTelephoneNumber ;
}

该项目包含指向不同团队的指针的std :: vector和使用以下内容的字符串:

The Project holds a std::vector of pointers to different teams and a string using:

std::vector<Team *> teams ;
std::string note ;

我在Project类中使用以下代码进行序列化:

I use the following code in the Project class for serialization:

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

  template <typename Archive>
  void serialize(Archive& ar, const unsigned int /*version*/)
  {
      //ar & BOOST_SERIALIZATION_NVP(teams) ; //ERROR OCCURS HERE
      ar & teams;
      ar & note ;
  }

要序列化Project对象的向量，我主要使用:

And to serialize the vector of Project objects in the main I use:

{
    std::ostringstream archiveStream ;
    boost::archive::text_oarchive archive(archiveStream) ;
    archive << BOOST_SERIALIZATION_NVP(projects) ;

    //Get serialized info as string
    archivedProjects = archiveStream.str() ;
}

这一切编译正常.问题是在运行时.到达代码的上述部分时，出现以下错误:

This all compiles fine. The issue is at Run-Time. When the above section of the code is reached, I get the following error:

terminate called after throwing an instance of 'boost::archive::archive_exception' 
what(): 
    unregistered class - derevided class not registered or exported"

该程序可以执行以下操作:

The program goes as far as:

ar & teams;

在调查表类的序列化尝试中.

In the Questionnaire class's serialization attempt.

推荐答案

就像在n.m.的链接中一样:您需要向Boost注册类，以便它知道序列化时是什么类.

As in n.m.'s link: you need to register the classes with Boost so that it knows what classes are what when serialising.

您需要为序列化项目"的每个类添加以下行:

You need to add the following line for each class where "Project" serializes:

ar.template register_type<ClassName>() ; //ClassName = Team etc

这篇关于序列化包含指针向量的对象向量的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！