Similarly to how we construct bsoncxx::document::view objects from a buffer with a single binary document, is there a way to extract single documents from a collection in a .bson dump in this framework without having to load them into a DB?
i.e. what works for single document objects
uint8 *buffer; // single bson document
size_t length; // size of buffer
bsoncxx::document::view view(buffer, length);
for (auto elem : view) {
doSomethingWithElem()
}
I'd like to be able to construct a cursor for the whole dump, but without loading it into a collection. Is something like this possible?
Found the solution and it was pretty simple in the end - I utilized the libbson library. An example of what I used below:
#include <bson.h>
// and other includes
void read_bson() {
bson_reader_t *reader;
const bson_t *doc;
bson_error_t error;
bool eof;
char *path;
reader = bson_reader_new_from_file(path, &error);
if (reader)
{
while ((doc = bson_reader_read(reader, &eof)))
{
const uint8_t *buffer = bson_get_data(doc);
auto view = bsoncxx::document::view(buffer, doc->len);
}
}
}