Re: [Boost-users] [Serialization] Compatibility of text archives in1.36 and 1.34

From: Robert Ramey (ramey_at_[hidden])
Date: 2008-09-01 11:57:39

This is touched upon in the "To Do - future projects" in the documentation.

Robert Ramey

Glenn Ramsey wrote:
> Robert Ramey wrote:
>> Glenn Ramsey wrote:
>>> Hi,
>>>
>>> I recently upgraded from boost 1.34 to boost 1.36. A version of my
>>> application built with 1.36 can read the text archives produced by
>>> 1.34, but a version of my application built with 1.34 cannot read
>>> the text archives produced by 1.36.
>>>
>>> Is this the behaviour that I should expect?
>>
>> yes.  We currently guarentee the ability to read archives made by
>> previous versions of the library.  We do not guarentee the ability
>> to read archives made by future versions of the library.
>
> Thanks Robert,
>
> Is there a way to have this type of compatibility, ie to tell version
> 1.36 that it should write the 1.34 format?
>
> This is an issue if you use a technique like this:
>
> <http://www.boost.org/doc/libs/1_36_0/doc/html/boost_asio/examples.html#boost_asio.examples.serialization>
>
> If you want to upgrade the library version used by the server and
> still support old (deployed) clients then the clients will not be
> able to deserialize communication from the server.
>
> Glenn