rapidjson : Extract a parameter from JsonObject using rapidjson

Question

I have a jsonObject that looks like

{"Types":[{"Mtype":"text/plain","time":"Thus:24:32:02"},{"MtypeSec":"text/plain","time":"Thus:24:32:02"}]}

I wanted to know how I can extract Mtype and time ? is the Types a jsonArray ??

Answer 1

Looks like Types is an array, but arrays are a subclass of Object so that is why IsObject() returns true. You should call IsArray() on it to see if it is an array.

The correct syntax would be document["Types"][0]["Mtype"].GetString(), or you can iterate over it with the following:

for (SizeType i = 0; i < document["Types"].Size(); i++){
    std::string strval;
    if(document["Types"][i].hasMember("Mtype")){
        strval = document["Types"][i]["Mtype"].GetString();
    } else if(document["Types"][i].hasMember("mtypeSec")){
        strval = document["Types"][i]["mtypeSec"].GetString();
    } else if(document["Types"][i].hasMember("time")){
        strval = document["Types"][i]["time"].GetString();
    } else if(/*other member test*/){
        //do something with other member
    } else {
        //base case, member not in the list of useful members
    }
    //do something useful with strval
    ....
}