Re: [Boost-users] [serialization] free load/save

1 Apr 2007

      Ruediger Berlich wrote:
...
Dear all,
I'd like to serialize a number of classes using the free-standing
version of the serialize function. As I do not want to access
internals of the classes directly, I have to work with set/get
functions, which in turn implies having to write load/save functions.
This seems to work for simple types, like in the following example.
But will it circumvent any internal mechanisms of Boost.Serialization
, if I do not give the library direct access to class data ? Will
this work for complex types, e.g. vectors of shared_ptr objects ?
yes

The only problem will be with "secret" objects which are pointed to.

When you de-serialize them to the stack, the internal address is wrong
so after moving them using "get" you'll have to use "reset_object_address"
if they are trackable.

Robert Ramey
...
/*************************************************************************/
class base{
public:
   base(void){
       setSecret(1);
   }
   base(int val){
       setSecret(val);
   }
   virtual ~base(){ /* nothing */ }
virtual int getSecret(void) const{
       return secret;
   }
virtual void printInfo(void) = 0;
void setSecret(int val){
       secret = val;
   }
private:
   int secret;
};
BOOST_IS_ABSTRACT(base);
namespace boost {
   namespace serialization {
       template<class Archive>
       void save(Archive & ar, const base & t,
                 unsigned int version)
       {
           int secret = t.getSecret();
           ar & make_nvp("secret", secret);
       }
template<class Archive>
       void load(Archive & ar, base & t, unsigned int version)
       {
           int secret;
           ar & make_nvp("secret", secret);
           t.setSecret(secret);
       }
template<class Archive>
       inline void serialize(Archive & ar, base & t;
                             const unsigned int version)
       {
           split_free(ar, t, version);
       }
   }
}
/*************************************************************************/
Thanks and have a good day,
Ruediger