程序包 cn.dinodev.spring.commons.promise

接口 Deferred<D>

类型参数:

D - Type used for resolve(Object)

F - Type used for #reject(Object)

所有超级接口:

Promise<D>, Supplier<D>

所有已知实现类:

DeferredObject

public interface Deferred<D>
extends Promise<D>

Deferred interface to trigger an event (resolve, reject, notify). Subsequently, this will allow Promise observers to listen in on the event (done, fail, progress).

作者:

Ray Tsang

另请参阅:

• DeferredObject

嵌套类概要

从接口继承的嵌套类/接口 cn.dinodev.spring.commons.promise.Promise

Promise.State

方法概要

修饰符和类型	方法	说明
Promise<D>	promise()	Return an Promise instance (i.e., an observer).
<F extends Throwable> Deferred<D>	reject(F reject)	This should be called when a task has completed unsuccessfully, i.e., a failure may have occurred.
Deferred<D>	resolve(D resolve)	This should be called when a task has completed successfully.

从接口继承的方法 cn.dinodev.spring.commons.promise.Promise

always, done, fail, getOrElse, getOrElse, isPending, isRejected, isResolved, state, then, then, waitSafely, waitSafely

从接口继承的方法 java.util.function.Supplier

get

方法详细资料

resolve

Deferred<D> resolve(D resolve)

This should be called when a task has completed successfully.

 
 Deferred deferredObject = new DeferredObject();
 Promise promise = deferredObject.promise();
 promise.done(new DoneCallback() {
   public void onDone(Object result) {
        // Done!
   }
 });

 // another thread using the same deferredObject
 deferredObject.resolve("OK");

 
 

参数:

resolve - the resolved value for this Deferred

返回:

the reference to this Deferred instance.

reject

<F extends Throwable> Deferred<D> reject(F reject)

This should be called when a task has completed unsuccessfully, i.e., a failure may have occurred.

 
 Deferred deferredObject = new DeferredObject();
 Promise promise = deferredObject.promise();
 promise.fail(new FailCallback() {
   public void onFail(Object result) {
        // Failed :(
   }
 });

 // another thread using the same deferredObject
 deferredObject.reject("BAD");

 
 

参数:

reject - the rejected value for this Deferred

返回:

the reference to this Deferred instance.

promise

Promise<D> promise()

Return an Promise instance (i.e., an observer). You can register callbacks in this observer.

返回:

the reference to this Deferred instance as a Promise,