所有已知实现类:: DirectPoller

public interface Poller<T>

Interface for polling a Callable instance provided by the user. Use when you need to put something in the background (e.g. a remote invocation) and wait for the result, e.g.

 Poller<Result> poller = ...
 
 final long id = remoteService.execute(); // do something remotely
 
 Future<Result> future = poller.poll(new Callable<Result> {
     public Object call() {
           // Look for the result (null if not ready)
           return remoteService.get(id);
     }
 });
 
 Result result = future.get(1000L, TimeUnit.MILLISECONDS);

作者:: Dave Syer, Mahmoud Ben Hassine

方法概要

所有方法实例方法抽象方法
修饰符和类型	方法	说明
`java.util.concurrent.Future<T>`	`poll(java.util.concurrent.Callable<T> callable)`	Use the callable provided to poll for a non-null result.

- 方法详细资料
  - poll
```
java.util.concurrent.Future<T> poll(java.util.concurrent.Callable<T> callable)
                             throws java.lang.Exception
```
    Use the callable provided to poll for a non-null result. The callable might be executed multiple times searching for a result, but once either a result or an exception has been observed the polling stops.
    参数:
    callable - a Callable to use to retrieve a result
    返回:
    a future which itself can be used to get the result
    抛出:
    java.lang.Exception - allows for checked exceptions

接口 Poller<T>

方法概要

方法详细资料

poll