Rest utils

As you may have noticed, the handleResponse() method in the ResponseHandler returns a DataRecord list, not a JSON. To convert a JSON to a List<DataRecord>, or a List<DataRecord> to a JSON, use the following:

  Json - List<DataRecord> conversion  
         
// json to List<DataRecord>
List<DataRecord> resultList = RestUtil.jsonToRecords(jsonResult);

// List<DataRecord> to json
String json = RestUtil.recordsToJson(records);