Getting multiple values in single Oraclize query

Question

Is it possible to get multiple values in single Oraclize query?

contract CheckBet is usingOraclize {

struct Weather {
    uint curr_temperature;
    uint high_temperature;
    uint low_temperature;
}
Weather weather;

/// Event for debugging
event Log(string text);

function CheckBet() {
    get_weather_status();
}

function get_weather_status() payable{
    Log("Oraclize query was sent, waiting for the answer.."); 
    (oraclize_query("URL","json(http://samples.openweathermap.org/data/2.5/weather?q=Lond`on,uk&appid=b6907d289e10d714a6e88b30761fae22).main.temp_min"));
}

//callback function for Oraclize
function __callback(bytes32 _myid, string _result) {
    require (msg.sender == oraclize_cbAddress());
    Log(_result);
    weather.low_temperature = parseInt(_result); 
}

In function get_weather_status, I'm getting min. temp. I want temp_max, curr_temp too.

Is it possible in single Oraclize query?

JSON FILE

{
  "main": {
   "temp":280.32,
   "pressure":1012,
   "humidity":81,
   "temp_min":279.15,
   "temp_max":281.15
  }
}

Answer 1

You should be able do this using JSONPATH.

(oraclize_query("URL","json(http://samples.openweathermap.org/data/2.5/weather?q=Lond`on,uk&appid=b6907d289e10d714a6e88b30761fae22).main[temp, temp_min, temp_max]"));

You can examine the results here http://app.oraclize.it/home/test_query#VVJMKEdFVCk=:anNvbihodHRwOi8vc2FtcGxlcy5vcGVud2VhdGhlcm1hcC5vcmcvZGF0YS8yLjUvd2VhdGhlcj9xPUxvbmRgb24sdWsmYXBwaWQ9YjY5MDdkMjg5ZTEwZDcxNGE2ZTg4YjMwNzYxZmFlMjIpLm1haW5bdGVtcCwgdGVtcF9taW4sIHRlbXBfbWF4XQ==

Answer 2

Quick googling says it might not be trivial. Have a look at https://github.com/oraclize/ethereum-examples/issues/10 So, you'd have to parse the result yourself.

P.S. Please accept the answers to your previous questions if you are satisfied with them.

Answer 3

For the query: "json(http://samples.openweathermap.org/data/2.5/weather?q=Lond`on,uk&appid=b6907d289e10d714a6e88b30761fae22).main[temp, pressure, humidity, temp_min, temp_max]"

Follow these rules: https://github.com/json-path/JsonPath