Re: [Boost-users] [serialization] skipping data

Joel de Guzman wrote:

Hi,

Here's a use case that I can't seem to find a way to do using boost.serialization.

Say with version 1, I want to serialize X Y and Z. These are hierarchical and expensive data structures. Now, with version 2, I do not need to create Y objects anymore. Yet, I still have to open version 1 files for backward compatibility. So, when loading version 1 files, I want to skip reading Y objects. How do I do that without having to create a temporary Y object that will be discarded later?

You need to define a proxy Y object that can deserialize itself into thin air.