Completer<T> Interface
A Completer is used to produce Futures and supply their value when it becomes available.
A service that provides values to callers, and wants to return Futures can use a Completer as follows:
Completer completer = new Completer(); // send future object back to client... return completer.future; ...
// later when value is available, call: completer.complete(value);
// alternatively, if the service cannot produce the value, it // can provide an exception: completer.completeException(exception);
Default class
Implemented by
Constructors
Code new Completer() #
Completer();
Methods
Code void completeException(Object exception, [Object stackTrace]) #
Indicate in future that an exception occured while trying to produce its
value. The argument
exception should not be null. A
stackTrace
object can be provided as well to give the user information about where
the error occurred. If omitted, it will be null.
void completeException(Object exception, [Object stackTrace]);