Hi Robert,
I know that it works for abstract base class. But if the base class is
not abstract class how you do it? Is it possible?
Thanks,
yan
_____
From: boost-users-bounces@lists.boost.org
[mailto:boost-users-bounces@lists.boost.org] On Behalf Of Robert Ramey
Sent: Monday, July 11, 2005 3:55 PM
To: boost-users@lists.boost.org
Subject: Re: [Boost-users] How to serialize a derived class object
withbaseclass pointer?
try making the base class a polymorphic class by adding the following
changes:
virtual ~CMyCls1() = 0;
"Yan Zhang" wrote in message
news:F96935FCB9C3D549B3B6CD8915811A2F0FF00C7C@mail60nt.mitchell.com...
Hi,
I'm trying to serialize an object of derived class with a base
class pointer, somehow only base class's serialization member function
got called. Here is the code (simplified):
class CMyCls1
{
public:
CMyCls1() : m(10) {}
~CMyCls1() {}
private:
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive &ar, const unsigned int version)
{
ar & BOOST_SERIALIZATION_NVP(m);
}
int m;
virtual ~CMyCls1() = 0;
};
class CMyCls2 : public CMyCls1
{
public:
CMyCls2() : x(1.5) {}
~CMyCls2() {}
private:
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive &ar, const unsigned int version)
{
ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(CMyCls1);
ar & BOOST_SERIALIZATION_NVP(x);
}
double x;
virtual ~CMyCls2();
};
void main ()
{
CMyCls1 *pmycls = new CMyCls2;
...
oa.register_type(static_cast(NULL));
oa.register_type(static_cast(NULL));
oa << BOOST_SERIALIZATION_NVP(pmycls);
...
}
Look at the archive file, only base class data is serialized.
Actuall, CMyCls2::serialization() is not called at all. How do you
serialize a derived class object with a pointer of base class?
Thanks,
Yan
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