What is the syntax for storing large binary array in a BSON in C++?

[Alex]

Greetings!

I realize this is somewhere in the docs, but I just can't find it. How
do I store binary array in a BSON in C++?
Also, do I have to take certain steps to enable GridFS, or is it
enabled by default?

Thanks!

[Spencer T Brody]

To create a BSONObj in C++ that stores binary data, you can do something like:

BSONObjBuilder builder;

b.appendBinData ("fieldname", datasize, BinDataGeneral, data);

BSONObj obj = builder.obj();

Documentation here: http://api.mongodb.org/cplusplus/current/classmongo_1_1_b_s_o_n_obj_builder.html#a6882df3d0e4ca68446684769bc9e4d18

GridFS is a client-side specification - nothing needs to be enabled on the server, you can just use the gridfs client in the C++ driver to put and fetch gridFS data from your mongo cluster.  The GridFS C++ client documentation is here: http://api.mongodb.org/cplusplus/current/classmongo_1_1_grid_f_s.html.

Hope that clears things up!

-Spencer