AsyncQueryResult<T> class abstract

A 4-state result represents asychronised query with single query value It could be either pending, waiting, succeeded, or failed

Typically used with Bloc or ValueNotifier

AsyncQueryResult.pending creates the PendingResult, indicates the query hasn't started. AsyncQueryResult.waiting creates the WaitingResult, indicates the query is in progress AsyncQueryResult.succeeded creates the SucceededResult, indicates the query is succeded with a value AsyncQueryResult.failed creates the FailedResult, indicates the query is failed

Optionally, AsyncQueryResult.initialValue can be used to create InitialValueResult, indicates the query hasn't started, but a default value is given.

Constructors

AsyncQueryResult(): Alias to AsyncQueryResult.pending
factory
AsyncQueryResult.failed(dynamic error, [StackTrace? stackTrace]): Creates the FailedResult, indicates the query is failed
const

factory
AsyncQueryResult.from(StatedResult result): Create AsyncQueryResult from any other result
factory
AsyncQueryResult.fromValue(T? value): Create the result from value. If value is null, PendingResult is created Otherwise SucceededResult holds value is created
factory
AsyncQueryResult.initialValue(T value): Create InitialValueResult, indicates the query hasn't started but a default value is given.
const

factory
AsyncQueryResult.pending(): Creates the PendingResult, indicates the query hasn't started
factory
AsyncQueryResult.succeeded(T value): Creates the SucceededResult, indicates the query is succeded with a value
const

factory
AsyncQueryResult.waiting(): Creates the WaitingResult, indicates the query is in progress
factory

hashCode → int: The hash code for this object.
no setterinherited
hasValue → bool: Return true when query resut has a value, either it is intial value or the result after running query It also indicates whether state implemented the ValueResult contract, regardless the type of the value
no setterinherited
isFailed → bool: Return ture when the query/action has finished with error
no setterinherited
isFinished → bool: Return true when query/action has been finished either with or without error
no setterinherited
isNotStarted → bool: Return true when query/action hasn't been started
no setterinherited
isSucceeded → bool: Return true when query/action has finished successfully, regardless it is an action or query
no setterinherited
isWaiting → bool: Return true when query/action is being processed
no setterinherited
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

asFailed() → FailedResult: inherited
asValueResult<T>() → ValueResult<T>: inherited
map<TR>({required ResultMapper<TR> pending, ValueResultMapper<T, TR>? initialValue, required ResultMapper<TR> waiting, required ValueResultMapper<T, TR> succeeded, required FailedResultMapper<TR> failed}) → TR: Pattern match the result on all branches
mapOr<TR>({ResultMapper<TR>? pending, ValueResultMapper<T, TR>? initialValue, ResultMapper<TR>? waiting, ValueResultMapper<T, TR>? succeeded, FailedResultMapper<TR>? failed, ResultMapper<TR>? notStarted, ResultMapper<TR>? finished, ValueResultMapper<T, TR>? hasValue, required ResultMapper<TR> orElse}) → TR: Pattern match the result with else branch
mapValue<TR>(ValueMapper<T, TR> mapper) → AsyncQueryResult<TR>: map the value of query. If it is a SucceededResult or InitialValueResult, map its value with mapper. Otherwise, keep the result.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited
updateWith<TR>(Future<QueryResult<TR>> future) → Stream<AsyncQueryResult<TR>>: Update self with future QueryResult