[Boost-users] Boost.Serialization type-dependent serialization

Subject: [Boost-users] Boost.Serialization type-dependent serialization
From: Roman Suvorov (windj007_at_[hidden])
Date: 2012-12-04 09:59:06

Hi!

I have a list of objects of the following structure:

> class Obj
> {
>     // a number simple fields
>     int field1() const;
>
>     // ...
>
>     // reference to an object containing large amount of data
>     const blob_type & mega_blob() const;
> };

The list is to be serialized in the following way:
1) simple fields of each object are to be serialized into a single xml file;
2) mega_blobs' are to be serialized into separate binary files.

The idea of doing it is to write custom archive that has operator<<
specialized for blob_type which does the magic.

Following the Boost.Serialization reference
(http://www.boost.org/doc/libs/1_52_0/libs/serialization/doc/archive_reference.html),
I wrote the code in order to proof the concept:
http://pastebin.com/ekbXXvxF

My test project is built using CMake and G++-4.6.3 (Debian Wheezy)
(that seems to be ok - other code that uses Boost.Serialization
compiles well):
http://pastebin.com/WVRUKLD2

As a result I get the following linker errors:
http://pastebin.com/rM05nkqw

The questions:
1) am I using xml_oarchive_impl wrong way or that problem is not boost-related?
2) maybe there are more elegant ways of solving my task?

Cheers,
Suvorov Roman.