java.lang.Object
- org.springframework.batch.core.scope.context.StepContextRepeatCallback

All Implemented Interfaces:
RepeatCallback
```
public abstract class StepContextRepeatCallback
extends java.lang.Object
implements RepeatCallback
```
Convenient base class for clients who need to do something in a repeat callback inside a Step.
Author:
Dave Syer, Mahmoud Ben Hassine

Constructor Summary
Constructors
Constructor Description
StepContextRepeatCallback(StepExecution stepExecution)

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract RepeatStatus`	`doInChunkContext(RepeatContext context, ChunkContext chunkContext)`	Do the work required for this chunk of the step.
`RepeatStatus`	`doInIteration(RepeatContext context)`	Manage the `StepContext` lifecycle.

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

- Constructor Detail
  - StepContextRepeatCallback
```
public StepContextRepeatCallback(StepExecution stepExecution)
```
    Parameters:
    stepExecution - instance of StepExecution to be used by StepContextRepeatCallback.
- Method Detail
  - doInIteration
```
public RepeatStatus doInIteration(RepeatContext context)
                           throws java.lang.Exception
```
    Manage the StepContext lifecycle. Business processing should be delegated to doInChunkContext(RepeatContext, ChunkContext). This is to ensure that the current thread has a reference to the context, even if the callback is executed in a pooled thread. Handles the registration and unregistration of the step context, so clients should not duplicate those calls.
    Specified by:
    doInIteration in interface RepeatCallback
    Parameters:
    context - the current context passed in by the caller.
    Returns:
    an RepeatStatus which is continuable if there is (or may be) more data to process.
    Throws:
    java.lang.Exception - if there is a problem with the processing.
    See Also:
    RepeatCallback.doInIteration(RepeatContext)
  - doInChunkContext
```
public abstract RepeatStatus doInChunkContext(RepeatContext context,
                                              ChunkContext chunkContext)
                                       throws java.lang.Exception
```
    Do the work required for this chunk of the step. The ChunkContext provided is managed by the base class, so that if there is still work to do for the task in hand state can be stored here. In a multi-threaded client, the base class ensures that only one thread at a time can be working on each instance of ChunkContext. Workers should signal that they are finished with a context by removing all the attributes they have added. If a worker does not remove them another thread might see stale state.
    Parameters:
    context - the current RepeatContext
    chunkContext - the chunk context in which to carry out the work
    Returns:
    the repeat status from the execution
    Throws:
    java.lang.Exception - implementations can throw an exception if anything goes wrong

Class StepContextRepeatCallback

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

StepContextRepeatCallback

Method Detail

doInIteration

doInChunkContext