13.5. Qpid Maps and Lists in C++
In C++, Qpid defines the Variant::Map and Variant::List types, which can be encoded into message content. The following code shows how to send these structures in a message:
using namespace qpid::types;
// !!! SNIP !!!
Message message;
Variant::Map content;
content["id"] = 987654321;
content["name"] = "Widget";
content["percent"] = 0.99;
Variant::List colours;
colours.push_back(Variant("red"));
colours.push_back(Variant("green"));
colours.push_back(Variant("white"));
content["colours"] = colours;
Variant::Map dimensions;
dimensions["length"] = 10.2;
dimensions["width"] = 5.1;
dimensions["depth"] = 2.0;
content["dimensions"]= dimensions;
Variant::List part1;
part1.push_back(Variant(1));
part1.push_back(Variant(2));
part1.push_back(Variant(5));
Variant::List part2;
part2.push_back(Variant(8));
part2.push_back(Variant(2));
part2.push_back(Variant(5));
Variant::List parts;
parts.push_back(part1);
parts.push_back(part2);
content["parts"]= parts;
Variant::Map specs;
specs["colours"] = colours;
specs["dimensions"] = dimensions;
specs["parts"] = parts;
content["specs"] = specs;
message.setContentObject(content);
sender.send(message, true);