description

# completed property Null safety

Future<Database> completed

Provides a Future which will be completed once the transaction has completed.

The future will error if an error occurrs on the transaction or if the transaction is aborted.

## Implementation

    Future<Database> get completed {
      var completer = new Completer<Database>();

      this.onComplete.first.then((_) {
        completer.complete(db);
      });

      this.onError.first.then((e) {
        completer.completeError(e);
      });

      this.onAbort.first.then((e) {
        // Avoid completing twice if an error occurs.
        if (!completer.isCompleted) {
          completer.completeError(e);
        }
      });

      return completer.future;
    }