delight.promise

Interface Promise<ResultType>

Type Parameters:

ResultType -

All Superinterfaces:

delight.async.Operation<ResultType>

All Known Implementing Classes:

JrePromiseImpl, PromiseImpl

public interface Promise<ResultType>
extends delight.async.Operation<ResultType>

Type for variables which hold promises.

Author:

Max Rohde

Method Summary

Modifier and Type	Method and Description
void	addExceptionFallback(delight.functional.Closure<Throwable> closure) Registeres a listener for exceptions, which is triggered when no listeners have been defined using catchExceptions(Closure)
ResultType	cachedResult() If this promises has been resolved, the result obtained will be returned by this function.
void	catchExceptions(delight.functional.Closure<Throwable> closure) Register a listener of exceptions.
ResultType	get() Attempts to resolve this promise synchronously.
void	get(delight.functional.Closure<ResultType> closure) Attempts to resolve this promise asynchronously.

Methods inherited from interface delight.async.Operation

apply

Method Detail

get

ResultType get()

Attempts to resolve this promise synchronously.

Returns:

Result of the promise.

catchExceptions

void catchExceptions(delight.functional.Closure<Throwable> closure)

Register a listener of exceptions.

Parameters:

closure - Closure to be called if an exception occurs in resolving the promise.

addExceptionFallback

void addExceptionFallback(delight.functional.Closure<Throwable> closure)

Registeres a listener for exceptions, which is triggered when no listeners have been defined using catchExceptions(Closure)

Parameters:

closure -

get

void get(delight.functional.Closure<ResultType> closure)

Attempts to resolve this promise asynchronously.

Parameters:

closure -

cachedResult

ResultType cachedResult()

If this promises has been resolved, the result obtained will be returned by this function.

Otherwise, returns null.

Returns: