Re: [Boost-users] Problem serializing a std::vector of a user-defined class containing a std::string

From the documentation: "Left unaddressed this will break the features that depend on tracking such as loading object through a pointer. Subtle bugs will be introduced into the

Hello, I think your problem could _maybe_ be related to "Object Tracking" if you have not addressed that already ( http://www.boost.org/doc/libs/1_37_0/libs/serialization/doc/index.html) program." Kind regards Rune On Wed, Jan 21, 2009 at 12:13 PM, Ivan Gonzalez wrote:

Dear all,

I'm having problems to serialize a std::vector of a small class I use in my code. The class contains 3 members: a std::string, a size_t, and an another class passed as a template parameter (see the code below.) The class passed as a template is basically a std::map >(see this post http://lists.boost.org/boost-users/2008/05/36282.php). I'm using the serialization library with the last class elsewhere in my code and works with no problems, so I guess the error must be in the code below. My program compiles and finishes OK, but the results I'm getting are slightly different from what I should get: it seems that somewhere in the serialization process the numbers stored in the third class get corrupted.

I'm using boost 1.35, I need the binary file (I'm taking advantage of the serialization stuff for arrays contiguous in memory), and everything happens in the same machine in a single run of my code (so it is not a problem of different binary archives for different machines.)

Thanks in advance,

Ivan

//-------------------------------------------------------------------------------------------- #include <iostream> #include <sstream> // for std::istringstream #include #include #include #include

template<class DataType> class ThingToStore{

public:

typedef DataType data_type;

ThingToStore() : site_(), name_(), data_() {}

ThingToStore(const data_type& data, const std::string& name, int site) : site_(site), name_(name), data_(data) {}

const std::string & name() const { return name_; } size_t site() const { return site_; } const data_type& map() const { return data_; }

private:

friend class boost::serialization::access;

template<class Archive> inline void serialize(Archive& ar, const unsigned int file_version) { ar & BOOST_SERIALIZATION_NVP(site_); ar & BOOST_SERIALIZATION_NVP(name_); ar & data_; }

size_t site_; std::string name_; data_type data_; };

template<class DataType> class StoredThingList {

private:

typedef std::vector this_type;

public:

StoredThingList() {}

template<class Index> void save(const Index& i, const std::string& name="blockOps_") const { // make a string for the name file std::ostringstream oss; oss<

template<class Index> void load(const Index& i, const std::string& name="blockOps_") { // make a string for the name file std::ostringstream oss; oss<

private:

friend class boost::serialization::access;

template<class Archive> inline void serialize(Archive& ar, const unsigned int version) { ar & vec_; }

this_type vec_; };

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