Dart

Refinitiv World-Check One - Get Top Level Groups

See more Refinitiv Examples

Sends a signed GET request to get the top level groups.

Note: This example requires Chilkat v9.5.0.89 or later.

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example assumes the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  final json = CkJsonObject();

  // Create the following JSON:
  // 
  // {
  //   "keyId": "aaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee",
  //   "hmacKey": "xxxxzI3vi58xxxCBxxx1+P/d8tGxx7KuLqN/KMPNxxxxekhj8/bx83+1YQSUxxxxYyv939ceY06GvhYRKmxxxx==",
  //   "algorithm": "hmac-sha256",
  //   "headers": [
  //     "(request-target)",
  //     "host",
  //     "date"
  //   ]
  // }

  // Substitute your actual API key and API secret in place of "api-key" and "api-secret"
  json.updateString('keyId', 'api-key');
  json.updateString('hmacKey', 'api-secret');
  json.updateString('algorithm', 'hmac-sha256');
  // Indicate the names of the headers to be included in the signature.
  // "(request-target)" is not actually a header name, but is a special name for HTTP signatures.
  // Copy the following three lines of code exactly as-is.  
  // Do not replace "host", "date", or "(request-target)" with values.
  json.updateString('headers[0]', '(request-target)');
  json.updateString('headers[1]', 'host');
  json.updateString('headers[2]', 'date');

  final http = CkHttp();

  // Setting the AuthSignature property causes the following header to be computed and added:
  // Authorization: Signature keyId="...", algorithm="hmac-sha256", headers="(request-target) host date", signature="..."
  http.authSignature = json.emit();

  http.setRequestHeader('Cache-Control', 'no-cache');

  // Chilkat will auto-add the Date header because it's needed by the HTTP Signature.

  final String responseJson;
  try {
    responseJson = http.quickGetStr('https://api-worldcheck.refinitiv.com/v2/groups');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print(responseJson);
  print('----');
  // A 200 status code indicates success.
  print('Status code = ${http.lastStatus}');

  // Successful JSON looks like this:
  // [ 
  //   {
  //   "id": "...",
  //   "name": "Company Name",
  //   "parentId": null,
  //   "hasChildren": false,
  //   "status": "ACTIVE",
  //   "children": []
  //   }
  // ]

  // Use this online tool to generate parsing code from sample JSON: 
  // Generate Parsing Code from JSON

  final jarr = CkJsonArray();

  jarr.load(responseJson);

  var id = '';
  var name = '';
  var parentId = '';
  var status = '';
  var j = 0;
  var countJ = 0;

  var i = 0;
  final countI = jarr.size;
  while (i < countI) {
    final jsonObj = jarr.objectAt(i);
    id = jsonObj.stringOf('id');
    name = jsonObj.stringOf('name');
    parentId = jsonObj.stringOf('parentId');
    jsonObj.boolOf('hasChildren');
    status = jsonObj.stringOf('status');
    j = 0;
    countJ = jsonObj.sizeOfArray('children');
    while (j < countJ) {
      jsonObj.j = j;
      j++;
    }

    i++;
  }
}