[Boost-users] [serialization] Private default constructors

[Robert Dailey]

I have a class that can be constructed statically in code, or constructed by data (this is where boost::serialization comes in).

For example:

class foo

{

public:

    foo() {}

    foo( std::string text )

        : m_text( text )

    {}

private:

    template< class Archive >

    void serialize( Archive& archive, unsigned int version )

    {

        archive & m_text;

    }

    std::string m_text;

    friend class boost::serialization::access;

};

There is one problem with this, though. It is possible for a user of this class to create a "foo" with the default constructor, thus enabling them to have "zombie" objects. The only thing I want using the default constructor is boost::serialization, not the user. Is there a way I can make the default constructor private and still have boost::serialization access it? Keep in mind that this must work polymorphically too.

[Robert Dailey]

Sorry, apparently this does work as-is.

I was confused about another error message I was getting from the compiler and it mistakenly lead me to believe it was not accessing the private constructor. Sorry for the mix up.