[boost] Re: [serialize] xml archives and versioning

From: Robert Ramey (ramey_at_[hidden])
Date: 2004-10-22 19:12:45

I rebuilt and reran the the tests "test_class_info_load" and
"test_class_info_save"  which are explicitly designed to test this
functionality.  I ran these test with XML archives.  Do these tests pass for
you?  How is this situation different than yours?  I updated the test
sliightly so that the class version jumps from 2 to 4 - skipping over 3 so
that a confusion between serialization library version and class version
wouldn't be overlooked.

Robert Ramey

"Russell Hind" <rh_gmane_at_[hidden]> wrote in message
news:clacr8$u01$1_at_sea.gmane.org...
> Robert Ramey wrote:
> > There is a confusion here.  Check the manual section titled "Class
> > Versioning"
> >
> > There should be something like:
> >
> > BOOST_CLASS_VERSION(Test_c, 99)
> >
> > in your code.  I don't remember what the maximum class version might be
but
> > it could be small like 255 for binary archives.
> >
>
> I did ask about this in the previous e-mail.  I thought non-primitive
> types were, by default, versioned, i.e. if no BOOST_CLASS_VERSION is
> specified, they have a version of 0.  Is this not the case?
>
> Anyway, the code I posted still gives odd results if I set
> BOOST_CLASS_VERSION(Test_c, 0).  Anything but 0 works, but zero gives
> the effects described previously, a 3 on the way back in, which is your
> archive version, not the class version.
>
> Again, specifying no version works for text archives (haven't checked
> binary) but not for XML.
>
> Thanks
>
> Russell
>
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