BatchUploadResult class sealed

One outcome per requested attachment, and how the batch came to stop.

An upload failing does not make the batch fail — a batch of three where the middle one was refused still ran as asked, and finishes as BatchUploadCompleted. Each attachment's own outcome is on its BatchUploadItemResult.

Sealed, so a switch over the three ways a batch can end is exhaustive, and the failure that gave up on one is only reachable once it has been matched:

switch (await batch.result) {
  case BatchUploadCompleted(:final items):
    submit(items);
  case BatchUploadStoppedOnError(:final error):
    report(error);
  case BatchUploadCancelled():
    break;
}

These carry BatchUpload where BatchUploadState's members carry only Batch on purpose: it is what tells a reader which of the two sealed families a name belongs to, and it keeps BatchCancelling a batch still calling its uploads off rather than one letter from a result.

Implementers

• BatchUploadCancelled
• BatchUploadCompleted
• BatchUploadStoppedOnError

Properties

hashCode → int

The hash code for this object.

no setter, inherited

items → List<BatchUploadItemResult>

One outcome per requested attachment, in the order they were given.

final

props → List<Object?>

The list of properties that will be used to determine whether two instances are equal.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

stringify → bool?

If set to true, the toString method will be overridden to output this instance's props.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited