void ReadDataExecuteQuery()

in firestore/android/FirestoreSnippetsCpp/app/src/main/cpp/snippets.cpp [818:842]

• 21 lines of code
• 3 McCabe index (conditional complexity)

void ReadDataExecuteQuery(firebase::firestore::Firestore* db) {
  using firebase::Future;
  using firebase::firestore::DocumentSnapshot;
  using firebase::firestore::Error;
  using firebase::firestore::FieldValue;
  using firebase::firestore::QuerySnapshot;

  // After creating a query object, use the Get() function to retrieve the
  // results:
  // This snippet is identical to get_multiple above.
  db->Collection("cities")
      .WhereEqualTo("capital", FieldValue::Boolean(true))
      .Get()
      .OnCompletion([](const Future<QuerySnapshot>& future) {
        if (future.error() == Error::kErrorOk) {
          for (const DocumentSnapshot& document :
               future.result()->documents()) {
            std::cout << document << std::endl;
          }
        } else {
          std::cout << "Error getting documents: " << future.error_message()
                    << std::endl;
        }
      });
}