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);