c++ - SOCIを使用してデータベースから行全体をユーザー定義のオブジェクト型に取得する方法は?

Question

クラスを拡張して (この質問から: SOCI を使用してデータベースから行全体を取得する方法は? )、2 つのプライベート メンバーを持ち、ゲッターとセッターも追加しました。しかし、プログラムをコンパイルすると、再びエラーが発生します。

myClass.h

#include <soci.h>
#include <postgresql/soci-postgresql.h>
#include <string>

class MyClass
{
public:
    MyClass();
    MyClass(int i, std::string);

    void setI(int i);
    int getI() const;
    void setS(std::string s);
    std::string getS() const;

private:
    int i_;
    std::string s_;
};

namespace soci
{
    template <>
    struct type_conversion<MyClass>
    {
        typedef MyClass base_type;

        static void from_base(int i, std::string s, soci::indicator ind, MyClass & mi)
        {
            if (ind ==  soci::i_null)
            {
                throw soci_error("Null value not allowed for this type");
            }

            mi.setI(i);
        mi.setS(s);
        }

        static void to_base(const MyClass & mi, int & i,  std::string &s, soci::indicator & ind)
        {
            i = mi.getI();
        s = mi.getS();
            ind = soci::i_ok;
        }
    };
}

myClass.cpp

#include "myClass.h"

MyClass::MyClass()
{

}

MyClass::MyClass(int i, std:string s)
{
    this->i_ = i;
    this->s_ = s;
}

int MyClass::getI() const
{
    return this->i_;
}

void MyClass::setI(int i)
{
    this->i_ = i;
}

std::string MyClass::getS() const
{
    return this->s_;
}

void MyClass::setS(std::string s)
{
    this->s_ = s;
}

myClassTest.cpp

#include <iostream>
#include "myClass.h"

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

    soci::session sql;
    sql.open(soci::postgresql, "dbname=mydb user=postgres password=postgrespass");
    MyClass i;
    sql << "SELECT id, name FROM person;", soci::into(i);
    std::cout << i.getI() << " " << i.getS();
    sql.close();

    return 0;
}

私は次のようにコンパイルします：

g++ myClassTest.cpp myClass.h myClass.cpp -o App -lsoci_core -lsoci_postgresql -ldl -lpq -I /usr/local/include/soci -I /usr/include/postgresql

そして、私が得たエラーは次のとおりです。

In file included from /usr/local/include/soci/into-type.h:13:0,
                 from /usr/local/include/soci/blob-exchange.h:12,
                 from /usr/local/include/soci/soci.h:18,
                 from myClass.h:1,
                 from myClassTest.cpp:2:
/usr/local/include/soci/exchange-traits.h: In instantiation of ‘soci::details::exchange_traits<MyClass>’:
/usr/local/include/soci/into.h:29:60:   instantiated from ‘soci::details::into_type_ptr soci::into(T&) [with T = MyClass, soci::details::into_type_ptr = soci::details::type_ptr<soci::details::into_type_base>]’
myClassTest.cpp:27:65:   instantiated from here
/usr/local/include/soci/exchange-traits.h:35:5: error: incomplete type ‘soci::details::exchange_traits<MyClass>’ used in nested name specifier
In file included from /usr/local/include/soci/into.h:13:0,
                 from /usr/local/include/soci/soci.h:22,
                 from myClass.h:1,
                 from myClassTest.cpp:2:
/usr/local/include/soci/type-conversion.h: In member function ‘void soci::details::conversion_into_type<T>::convert_from_base() [with T = MyClass]’:
myClassTest.cpp:34:1:   instantiated from here
/usr/local/include/soci/type-conversion.h:59:9: error: no matching function for call to ‘soci::type_conversion<MyClass>::from_base(soci::type_conversion<MyClass>::base_type&, soci::indicator&, MyClass&)’
/usr/local/include/soci/type-conversion.h:59:9: note: candidate is:
myClass.h:28:21: note: static void soci::type_conversion<MyClass>::from_base(int, std::string, soci::indicator, MyClass&)
myClass.h:28:21: note:   candidate expects 4 arguments, 3 provided
myClass.cpp:8:28: error: found ‘:’ in nested-name-specifier, expected ‘::’