PartitionStep (Spring Batch 4.1.4.RELEASE API)

java.lang.Object
- org.springframework.batch.core.step.AbstractStep
- - org.springframework.batch.core.partition.support.PartitionStep
  - - org.springframework.batch.core.jsr.step.PartitionStep

All Implemented Interfaces:
Step, StepLocator, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanNameAware, org.springframework.beans.factory.InitializingBean
```
public class PartitionStep
extends PartitionStep
implements StepLocator
```
An extension of the PartitionStep that provides additional semantics required by JSR-352. Specifically, this implementation adds the required lifecycle calls to the PartitionReducer if it is used.
Since:
3.0
Author:
Michael Minella

Field Summary
- Fields inherited from interface org.springframework.batch.core.Step
  STEP_TYPE_KEY

Constructor Summary
Constructors
Constructor Description
PartitionStep()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`doExecute(StepExecution stepExecution)`	Delegate execution to the `PartitionHandler` provided.
`Step`	`getStep(java.lang.String stepName)`
`java.util.Collection<java.lang.String>`	`getStepNames()`
`void`	`setPartitionReducer(javax.batch.api.partition.PartitionReducer reducer)`

Methods inherited from class org.springframework.batch.core.partition.support.PartitionStep
afterPropertiesSet, getPartitionHandler, getStepExecutionSplitter, setPartitionHandler, setStepExecutionAggregator, setStepExecutionSplitter

Methods inherited from class org.springframework.batch.core.step.AbstractStep
close, doExecutionRegistration, doExecutionRelease, execute, getCompositeListener, getJobRepository, getName, getStartLimit, isAllowStartIfComplete, open, registerStepExecutionListener, setAllowStartIfComplete, setBeanName, setJobRepository, setName, setStartLimit, setStepExecutionListeners, toString

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

- Constructor Detail
  - PartitionStep
```
public PartitionStep()
```
- Method Detail
  - setPartitionReducer
```
public void setPartitionReducer(javax.batch.api.partition.PartitionReducer reducer)
```
  - doExecute
```
protected void doExecute(StepExecution stepExecution)
                  throws java.lang.Exception
```
    Delegate execution to the PartitionHandler provided. The StepExecution passed in here becomes the parent or master execution for the partition, summarizing the status on exit of the logical grouping of work carried out by the PartitionHandler. The individual step executions and their input parameters (through ExecutionContext) for the partition elements are provided by the StepExecutionSplitter.
    Overrides:
    doExecute in class PartitionStep
    Parameters:
    stepExecution - the master step execution for the partition
    Throws:
    java.lang.Exception - checked exception thrown by implementation
    See Also:
    Step.execute(StepExecution)
  - getStepNames
```
public java.util.Collection<java.lang.String> getStepNames()
```
    Specified by:
    getStepNames in interface StepLocator
  - getStep
```
public Step getStep(java.lang.String stepName)
             throws NoSuchStepException
```
    Specified by:
    getStep in interface StepLocator
    Throws:
    NoSuchStepException