DirectPoller (Spring Batch 4.1.4.RELEASE API)

java.lang.Object
- org.springframework.batch.poller.DirectPoller<S>

类型参数:
S - the type of the result
所有已实现的接口:
Poller<S>
```
public class DirectPoller<S>
extends java.lang.Object
implements Poller<S>
```
A Poller that uses the callers thread to poll for a result as soon as it is asked for. This is often appropriate if you expect a result relatively quickly, or if there is only one such result expected (otherwise it is more efficient to use a background thread to do the polling).
作者:
Dave Syer

构造器概要
构造器
构造器说明
DirectPoller(long interval)

方法概要

所有方法实例方法具体方法
修饰符和类型	方法	说明
`java.util.concurrent.Future<S>`	`poll(java.util.concurrent.Callable<S> callable)`	Get a future for a non-null result from the callback.

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- 构造器详细资料
  - DirectPoller
```
public DirectPoller(long interval)
```
- 方法详细资料
  - poll
```
public java.util.concurrent.Future<S> poll(java.util.concurrent.Callable<S> callable)
                                    throws java.lang.Exception
```
    Get a future for a non-null result from the callback. Only when the result is asked for (using Future.get() or Future.get(long, TimeUnit) will the polling actually start.
    指定者:
    poll 在接口中 Poller<S>
    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
    另请参阅:
    Poller.poll(Callable)