ErrorLink class

ErrorLink allows interception of GraphQL errors (using onGraphQLError) and LinkExceptions (using onException).

In both cases ErrorLink transfers control over to the handler which may return a new stream to discard the original stream. If the handler returns null, the original stream is left intact and will be allowed to continue streaming new events.

Constructors

const

Properties

hashCode → int
The hash code for this object.
no setterinherited
onException → ExceptionHandler?
final
onGraphQLError → ErrorHandler?
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

concat(Link next) → Link
Adds next after this link
inherited
dispose() → Future<void>
Can be called to clean up resources
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
request(Request request, [NextLink? forward]) → Stream<Response>
A function called when a request reaches this Link
route(LinkRouter route) → Link
Route requests after this link
inherited
split(bool test(Request request), Link left, [Link right = const PassthroughLink()]) → Link
Split requests after this link
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited