getTransaction method

Implementation

Future<Map<String, Transaction>> getTransaction(
  List<String> addresses, {
  String request = Transaction.kTransactionQueryAllFields,
}) async {
  const methodName = 'getTransaction';
  return withRetry(
    actionName: methodName,
    action: () async {
      if (addresses.isEmpty) {
        return {};
      }

      final fragment = 'fragment fields on Transaction { $request }';
      final body = StringBuffer()..write('query { ');
      for (final address in addresses) {
        body.write(
          ' _$address: transaction(address:"$address") { ...fields }',
        );
      }
      body.write('} $fragment');
      final result = await _client
          .withLogger(
            methodName,
          )
          .query(
            QueryOptions(
              document: gql(body.toString()),
              parserFn: (json) {
                final transactions = json.mapValues(
                  (value) {
                    if (value != null) {
                      return Transaction.fromNodeRPC(
                        value as Map<String, dynamic>,
                      );
                    }
                  },
                  keysToIgnore: _responseKeysToIgnore,
                );
                return removeAliasPrefix<Transaction>(transactions) ?? {};
              },
            ),
          );

      manageLinkException(result);

      return result.parsedData ?? {};
    },
    maxRetries: maxRetries,
    retryDelay: retryDelay,
  );
}