java.lang.Object
- org.springframework.batch.item.ItemStreamSupport
- - org.springframework.batch.item.support.AbstractItemStreamItemReader<org.springframework.core.io.Resource>
  - - org.springframework.batch.item.file.ResourcesItemReader

All Implemented Interfaces:
ItemReader<org.springframework.core.io.Resource>, ItemStream, ItemStreamReader<org.springframework.core.io.Resource>
```
public class ResourcesItemReader
extends AbstractItemStreamItemReader<org.springframework.core.io.Resource>
```
ItemReader which produces Resource instances from an array. This can be used conveniently with a configuration entry that injects a pattern (e.g. mydir/*.txt, which can then be converted by Spring to an array of Resources by the ApplicationContext.

Thread-safe between calls to open(ExecutionContext). The ExecutionContext is not accurate in a multi-threaded environment, so do not rely on that data for restart (i.e. always open with a fresh context).
Since:
2.1
Author:
Dave Syer, Mahmoud Ben Hassine
See Also:
ResourceArrayPropertyEditor

Constructor Summary
Constructors
Constructor Description
ResourcesItemReader()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`open(ExecutionContext executionContext)`	No-op.
`org.springframework.core.io.Resource`	`read()`	Increments a counter and returns the next `Resource` instance from the input, or `null` if none remain.
`void`	`setResources(org.springframework.core.io.Resource[] resources)`	The resources to serve up as items.
`void`	`update(ExecutionContext executionContext)`	Return empty `ExecutionContext`.

Methods inherited from class org.springframework.batch.item.ItemStreamSupport
close, getExecutionContextKey, setExecutionContextName, setName

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

Methods inherited from interface org.springframework.batch.item.ItemStream
close

- Constructor Detail
  - ResourcesItemReader
```
public ResourcesItemReader()
```
- Method Detail
  - setResources
```
public void setResources(org.springframework.core.io.Resource[] resources)
```
    The resources to serve up as items. Hint: use a pattern to configure.
    Parameters:
    resources - the resources
  - read
```
@Nullable
public org.springframework.core.io.Resource read()
                                          throws java.lang.Exception
```
    Increments a counter and returns the next Resource instance from the input, or null if none remain.
    Returns:
    T the item to be processed or null if the data source is exhausted
    Throws:
    ParseException - if there is a problem parsing the current record (but the next one may still be valid)
    NonTransientResourceException - if there is a fatal exception in the underlying resource. After throwing this exception implementations should endeavour to return null from subsequent calls to read.
    UnexpectedInputException - if there is an uncategorised problem with the input data. Assume potentially transient, so subsequent calls to read might succeed.
    java.lang.Exception - if an there is a non-specific error.
  - open
```
public void open(ExecutionContext executionContext)
          throws ItemStreamException
```
    Description copied from class: ItemStreamSupport
    No-op.
    Specified by:
    open in interface ItemStream
    Overrides:
    open in class ItemStreamSupport
    Parameters:
    executionContext - current step's ExecutionContext. Will be the executionContext from the last run of the step on a restart.
    Throws:
    ItemStreamException
    See Also:
    ItemStream.open(ExecutionContext)
  - update
```
public void update(ExecutionContext executionContext)
            throws ItemStreamException
```
    Description copied from class: ItemStreamSupport
    Return empty ExecutionContext.
    Specified by:
    update in interface ItemStream
    Overrides:
    update in class ItemStreamSupport
    Parameters:
    executionContext - to be updated
    Throws:
    ItemStreamException
    See Also:
    ItemStream.update(ExecutionContext)

Class ResourcesItemReader

Constructor Summary

Method Summary

Methods inherited from class org.springframework.batch.item.ItemStreamSupport

Methods inherited from class java.lang.Object

Methods inherited from interface org.springframework.batch.item.ItemStream

Constructor Detail

ResourcesItemReader

Method Detail

setResources

read

open

update