org.springframework.batch.core.resource
Class StepExecutionSimpleCompletionPolicy

java.lang.Object
  org.springframework.batch.core.listener.StepExecutionListenerSupport
      org.springframework.batch.core.resource.StepExecutionSimpleCompletionPolicy

All Implemented Interfaces:

StepExecutionListener, StepListener, CompletionPolicy

public class StepExecutionSimpleCompletionPolicy
extends StepExecutionListenerSupport
implements CompletionPolicy

A CompletionPolicy that picks up a commit interval from JobParameters by listening to the start of a step. Use anywhere that a CompletionPolicy can be used (usually at the chunk level in a step), and inject as a StepExecutionListener into the surrounding step. N.B. only after the step has started will the completion policy be usable.

It is easier and probably preferable to simply declare the chunk with a commit-interval that is a late-binding expression (e.g. #{jobParameters['commit.interval']}). That feature is available from of Spring Batch 2.1.7.

Author:

Dave Syer

See Also:

CompletionPolicy

Constructor Summary

StepExecutionSimpleCompletionPolicy()

Method Summary

void	beforeStep(StepExecution stepExecution) Set up a SimpleCompletionPolicy with a commit interval taken from the JobParameters.
boolean	isComplete(RepeatContext context)
boolean	isComplete(RepeatContext context, RepeatStatus result)
void	setKeyName(java.lang.String keyName) Public setter for the key name of a Long value in the JobParameters that will contain a commit interval.
RepeatContext	start(RepeatContext parent)
java.lang.String	toString() Delegates to the wrapped CompletionPolicy if set, otherwise returns the value of setKeyName(String).
void	update(RepeatContext context)

Methods inherited from class org.springframework.batch.core.listener.StepExecutionListenerSupport

afterStep

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

StepExecutionSimpleCompletionPolicy

public StepExecutionSimpleCompletionPolicy()

Method Detail

setKeyName

public void setKeyName(java.lang.String keyName)

Public setter for the key name of a Long value in the JobParameters that will contain a commit interval. Defaults to "commit.interval".

Parameters:

keyName - the keyName to set

beforeStep

public void beforeStep(StepExecution stepExecution)

Set up a SimpleCompletionPolicy with a commit interval taken from the JobParameters. If there is a Long parameter with the given key name, the intValue of this parameter is used. If not an exception will be thrown.

Specified by:

beforeStep in interface StepExecutionListener

Overrides:

beforeStep in class StepExecutionListenerSupport

See Also:

StepExecutionListenerSupport.beforeStep(org.springframework.batch.core.StepExecution)

isComplete

public boolean isComplete(RepeatContext context,
                          RepeatStatus result)

Specified by:

isComplete in interface CompletionPolicy

Parameters:

context -

result -

Returns:

true if the commit interval has been reached or the result indicates completion

See Also:

CompletionPolicy.isComplete(RepeatContext, RepeatStatus)

isComplete

public boolean isComplete(RepeatContext context)

Specified by:

isComplete in interface CompletionPolicy

Parameters:

context -

Returns:

if the commit interval has been reached

See Also:

CompletionPolicy.isComplete(org.springframework.batch.repeat.RepeatContext)

start

public RepeatContext start(RepeatContext parent)

Specified by:

start in interface CompletionPolicy

Parameters:

parent -

Returns:

a new RepeatContext

See Also:

CompletionPolicy.start(org.springframework.batch.repeat.RepeatContext)

update

public void update(RepeatContext context)

Specified by:

update in interface CompletionPolicy

Parameters:

context -

See Also:

CompletionPolicy.update(org.springframework.batch.repeat.RepeatContext)

toString

public java.lang.String toString()

Delegates to the wrapped CompletionPolicy if set, otherwise returns the value of setKeyName(String).

Overrides:

toString in class java.lang.Object