beginTransaction method
Future<BeginTransactionResponse>
beginTransaction(
- BeginTransactionRequest request,
- String database, {
- String? $fields,
Starts a new transaction.
request
- The metadata request object.
Request parameters:
database
- Required. The database name. In the format:
projects/{project_id}/databases/{database_id}
.
Value must have pattern ^projects/\[^/\]+/databases/\[^/\]+$
.
$fields
- Selector specifying which fields to include in a partial
response.
Completes with a BeginTransactionResponse.
Completes with a commons.ApiRequestError if the API endpoint returned an error.
If the used http.Client
completes with an error when making a REST call,
this method will complete with the same error.
Implementation
async.Future<BeginTransactionResponse> beginTransaction(
BeginTransactionRequest request,
core.String database, {
core.String? $fields,
}) async {
final body_ = convert.json.encode(request);
final queryParams_ = <core.String, core.List<core.String>>{
if ($fields != null) 'fields': [$fields],
};
final url_ = 'v1/' +
core.Uri.encodeFull('$database') +
'/documents:beginTransaction';
final response_ = await _requester.request(
url_,
'POST',
body: body_,
queryParams: queryParams_,
);
return BeginTransactionResponse.fromJson(
response_ as core.Map<core.String, core.dynamic>);
}