java.lang.Object
- org.springframework.batch.integration.async.AsyncItemWriter<T>

所有已实现的接口:
ItemStream, ItemStreamWriter<java.util.concurrent.Future<T>>, ItemWriter<java.util.concurrent.Future<T>>, org.springframework.beans.factory.InitializingBean
```
public class AsyncItemWriter<T>
extends java.lang.Object
implements ItemStreamWriter<java.util.concurrent.Future<T>>, org.springframework.beans.factory.InitializingBean
```

构造器概要
构造器
构造器说明
AsyncItemWriter()

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
`void`	`afterPropertiesSet()`
`void`	`close()`	If any resources are needed for the stream to operate they need to be destroyed here.
`void`	`open(ExecutionContext executionContext)`	Open the stream for the provided `ExecutionContext`.
`void`	`setDelegate(ItemWriter<T> delegate)`
`void`	`update(ExecutionContext executionContext)`	Indicates that the execution context provided during open is about to be saved.
`void`	`write(java.util.List<? extends java.util.concurrent.Future<T>> items)`	In the processing of the `Future`s passed, nulls are not passed to the delegate since they are considered filtered out by the `AsyncItemProcessor`'s delegated `ItemProcessor`.

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
  - AsyncItemWriter
```
public AsyncItemWriter()
```
- 方法详细资料
  - afterPropertiesSet
```
public void afterPropertiesSet()
                        throws java.lang.Exception
```
    指定者:
    afterPropertiesSet 在接口中 org.springframework.beans.factory.InitializingBean
    抛出:
    java.lang.Exception
  - setDelegate
```
public void setDelegate(ItemWriter<T> delegate)
```
    参数:
    delegate - ItemWriter that does the actual writing of the Future results
  - write
```
public void write(java.util.List<? extends java.util.concurrent.Future<T>> items)
           throws java.lang.Exception
```
    In the processing of the Futures passed, nulls are not passed to the delegate since they are considered filtered out by the AsyncItemProcessor's delegated ItemProcessor. If the unwrapping of the Future results in an ExecutionException, that will be unwrapped and the cause will be thrown.
    指定者:
    write 在接口中 ItemWriter<T>
    参数:
    items - Futures to be unwrapped and passed to the delegate
    抛出:
    java.lang.Exception - The exception returned by the Future if one was thrown
  - open
```
public void open(ExecutionContext executionContext)
          throws ItemStreamException
```
    从接口复制的说明: ItemStream
    Open the stream for the provided ExecutionContext.
    指定者:
    open 在接口中 ItemStream
    参数:
    executionContext - current step's ExecutionContext. Will be the executionContext from the last run of the step on a restart.
    抛出:
    ItemStreamException
  - update
```
public void update(ExecutionContext executionContext)
            throws ItemStreamException
```
    从接口复制的说明: ItemStream
    Indicates that the execution context provided during open is about to be saved. If any state is remaining, but has not been put in the context, it should be added here.
    指定者:
    update 在接口中 ItemStream
    参数:
    executionContext - to be updated
    抛出:
    ItemStreamException
  - close
```
public void close()
           throws ItemStreamException
```
    从接口复制的说明: ItemStream
    If any resources are needed for the stream to operate they need to be destroyed here. Once this method has been called all other methods (except open) may throw an exception.
    指定者:
    close 在接口中 ItemStream
    抛出:
    ItemStreamException

类 AsyncItemWriter<T>

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

AsyncItemWriter

方法详细资料

afterPropertiesSet

setDelegate

write

open

update

close