java.lang.Object
- org.springframework.batch.item.support.CompositeItemStream

All Implemented Interfaces:
ItemStream
```
public class CompositeItemStream
extends java.lang.Object
implements ItemStream
```
Simple ItemStream that delegates to a list of other streams.
Author:
Dave Syer

Constructor Summary
Constructors
Constructor Description
CompositeItemStream()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`close()`	Broadcast the call to close.
`void`	`open(ExecutionContext executionContext)`	Broadcast the call to open.
`void`	`register(ItemStream stream)`	Register a `ItemStream` as one of the interesting providers under the provided key.
`void`	`setStreams(ItemStream[] streams)`	Public setter for the `ItemStream`s.
`void`	`update(ExecutionContext executionContext)`	Simple aggregate `ExecutionContext` provider for the contributions registered under the given key.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - CompositeItemStream
```
public CompositeItemStream()
```
- Method Detail
  - setStreams
```
public void setStreams(ItemStream[] streams)
```
    Public setter for the ItemStreams.
    Parameters:
    streams - array of ItemStream.
  - register
```
public void register(ItemStream stream)
```
    Register a ItemStream as one of the interesting providers under the provided key.
    Parameters:
    stream - an instance of ItemStream to be added to the list of streams.
  - update
```
public void update(ExecutionContext executionContext)
```
    Simple aggregate ExecutionContext provider for the contributions registered under the given key.
    Specified by:
    update in interface ItemStream
    Parameters:
    executionContext - to be updated
    See Also:
    ItemStream.update(ExecutionContext)
  - close
```
public void close()
           throws ItemStreamException
```
    Broadcast the call to close.
    Specified by:
    close in interface ItemStream
    Throws:
    ItemStreamException - thrown if one of the ItemStreams in the list fails to close. This is a sequential operation so all itemStreams in the list after the one that failed to close will remain open.
  - open
```
public void open(ExecutionContext executionContext)
          throws ItemStreamException
```
    Broadcast the call to open.
    Specified by:
    open in interface ItemStream
    Parameters:
    executionContext - current step's ExecutionContext. Will be the executionContext from the last run of the step on a restart.
    Throws:
    ItemStreamException - thrown if one of the ItemStreams in the list fails to open. This is a sequential operation so all itemStreams in the list after the one that failed to open will not be opened.

Class CompositeItemStream

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

CompositeItemStream

Method Detail

setStreams

register

update

close

open