[odb-users] Support for std::vector<unsigned char> and arrays

[Boris Kolpackov]

Hi Chris,

Chris Richards <chris.richards at yellowfeather.co.uk> writes:

> Although ODB supports mapping the std::vector<char> type to the MySQL  
> BLOB and BINARY types it doesn't seem to support std::vector<unsigned  
> char>, standard arrays or boost arrays. See the class declaration below:
>
> [...]
>
> Is it possible to work around, or add support, for these data types?

Yes, in ODB you can map pretty much any C++ type to any database type
by providing the odb::value_traits class template specialization. The
'mapping' example in the odb-examples package shows how to do this.

Also, for the upcoming 1.7.0 release I have added built-in support
for mapping char[N], unsigned char[N], and vector<unsigned char> to
BLOB types (and added boost::array<char> to the TODO list). This
support is also included in the just released 1.7.0.a1, if you
would like to give it a try:

http://www.codesynthesis.com/pipermail/odb-users/2011-November/000385.html

Boris