AbstractPartitionReducer

java.lang.Object
- javax.batch.api.partition.AbstractPartitionReducer

All Implemented Interfaces:

PartitionReducer
```
public abstract class AbstractPartitionReducer
extends java.lang.Object
implements PartitionReducer
```
The AbstractBatchlet provides default implementations of less commonly implemented methods.

Nested Class Summary
- Nested classes/interfaces inherited from interface javax.batch.api.partition.PartitionReducer
  PartitionReducer.PartitionStatus

Constructor Summary

Constructors
Constructor and Description

AbstractPartitionReducer()

Constructors
Constructor and Description
`AbstractPartitionReducer()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`afterPartitionedStepCompletion(PartitionReducer.PartitionStatus status)` Override this method to take action after partitioned step processing ends.
`void`	`beforePartitionedStepCompletion()` Override this method to take action before normal partitioned step processing ends.
`void`	`beginPartitionedStep()` Override this method to take action before partitioned step processing begins.
`void`	`rollbackPartitionedStep()` Override this method to take action when a partitioned step is rolling back.

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

- Constructor Detail
  - AbstractPartitionReducer
```
public AbstractPartitionReducer()
```
- Method Detail
  - beginPartitionedStep
```
public void beginPartitionedStep()
                          throws java.lang.Exception
```
    Override this method to take action before partitioned step processing begins.
    
    Specified by:
    
    beginPartitionedStep in interface PartitionReducer
    
    Throws:
    
    java.lang.Exception - is thrown if an error occurs.
  - beforePartitionedStepCompletion
```
public void beforePartitionedStepCompletion()
                                     throws java.lang.Exception
```
    Override this method to take action before normal partitioned step processing ends.
    
    Specified by:
    
    beforePartitionedStepCompletion in interface PartitionReducer
    
    Throws:
    
    java.lang.Exception - is thrown if an error occurs.
  - rollbackPartitionedStep
```
public void rollbackPartitionedStep()
                             throws java.lang.Exception
```
    Override this method to take action when a partitioned step is rolling back.
    
    Specified by:
    
    rollbackPartitionedStep in interface PartitionReducer
    
    Throws:
    
    java.lang.Exception - is thrown if an error occurs.
  - afterPartitionedStepCompletion
```
public void afterPartitionedStepCompletion(PartitionReducer.PartitionStatus status)
                                    throws java.lang.Exception
```
    Override this method to take action after partitioned step processing ends.
    
    Specified by:
    
    afterPartitionedStepCompletion in interface PartitionReducer
    
    Parameters:
    
    status - specifies the outcome of the partitioned step. Values are "COMMIT" or "ROLLBACK".
    
    Throws:
    
    java.lang.Exception - is thrown if an error occurs.

Class AbstractPartitionReducer

Nested Class Summary

Nested classes/interfaces inherited from interface javax.batch.api.partition.PartitionReducer

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

AbstractPartitionReducer

Method Detail

beginPartitionedStep

beforePartitionedStepCompletion

rollbackPartitionedStep

afterPartitionedStepCompletion