Re: [Boost-users] Problems with char* serialization

From: Robert Ramey (ramey_at_[hidden])
Date: 2008-04-09 11:58:33

you can but if you serialize a pointer to a character I don't think you'll get back what you want.  Upon loading, the system will create a single new character and return a pointer to it.  Somehow I don't think that's what you want.

Robert Ramey
  "Ariel Brunetto" <abrunetto_at_[hidden]> wrote in message news:c1bd22250804081950k2342e4d1l956cc5c005d605c8_at_mail.gmail.com...
  Sorry, but I dont understand. The documentation says that I can serialize a pointer to a Serializable type such as a primitive type.
  Is this true?

  Ariel

  On Tue, Apr 8, 2008 at 7:28 PM, Robert Ramey <ramey_at_[hidden]> wrote:

    binary_object will do it - but you have to create the array by hand.

    look at using a reference to an array in stead of a pointer.

    Robert Ramey

      "Ariel Brunetto" <abrunetto_at_[hidden]> wrote in message news:c1bd22250804081247i4c34489fh5f69a0d0c8595b73_at_mail.gmail.com...
      My pointer to a char is actually an array. Is it possible to serialize it in this way?

      Ariel

      On Tue, Apr 8, 2008 at 4:54 PM, Robert Ramey <ramey_at_[hidden]> wrote:

        serializing a pointer to a char is will only serialize one char.

        try serializating either an array of characters or an std::string

        Robert Ramey

          "Ariel Brunetto" <abrunetto_at_[hidden]> wrote in message news:c1bd22250804081016m1bf9c734s143a08b9a166a2bb_at_mail.gmail.com...
          Hello!

          My name is Ariel and this is my first time with boost. I spent a few days looking arround the serialization library, and right now I have a project with my first serialized classes.
          I spent some time reading the documentation and the tutorial. I am having problems serializing pointers. I am trying to serialize a const char* and it seems that doesn't work in the trivial way.

          This is my code:

          //-----------------------------------------------------------------------------
          // myserializeclass.h
          //-----------------------------------------------------------------------------
          #include <fstream>
          #include <boost/archive/binary_iarchive.hpp>
          #include <boost/archive/binary_oarchive.hpp>
          #include <boost/serialization/base_object.hpp>
          //-----------------------------------------------------------------------------
          class MySerializeClass
          {
          private:
           friend class boost::serialization::access;
           template<class Archive>
           void serialize(Archive & ar, const unsigned int uiVersion)
           {
            ar & m_pChar;
           }
          // members to serialize
          public:
           char* m_pChar;
          };
          //-----------------------------------------------------------------------------
          BOOST_CLASS_TRACKING(MySerializeAbstractBase, ::boost::serialization::track_never)
          //-----------------------------------------------------------------------------

          //-----------------------------------------------------------------------------
          // myserializeclass.cpp
          //-----------------------------------------------------------------------------
          int main()
          {
           MySerializeClass MySerializeClassObject;
           
           std::ofstream ofs(akFilename);
           boost::archive::binary_oarchive oa(ofs);
           
           oa << MySerializeClassObject;
           return 0;
          }
          //-----------------------------------------------------------------------------

          It doesn't compile. I get the following error:

          1>c:\program files\microsoft visual studio 8\vc\platformsdk\include\boost\serialization\access.hpp(109) : error C2228: left of '.serialize' must have class/struct/union

          I know that this is my mistake, but I don't know how to fix it ;). I know that there is a lot of consideration about pointer serialization. Could you point me in the right direction?

          Thanks in advance!
          Ariel

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      -- 
      ________________
      Ariel Brunetto
      www.aquadize.com 

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  -- 
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  Ariel Brunetto
  www.aquadize.com 

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