java.lang.Object
- org.springframework.batch.core.launch.support.SimpleJobLauncher

All Implemented Interfaces:
JobLauncher, org.springframework.beans.factory.InitializingBean
```
public class SimpleJobLauncher
extends java.lang.Object
implements JobLauncher, org.springframework.beans.factory.InitializingBean
```
Simple implementation of the JobLauncher interface. The Spring Core TaskExecutor interface is used to launch a Job. This means that the type of executor set is very important. If a SyncTaskExecutor is used, then the job will be processed within the same thread that called the launcher. Care should be taken to ensure any users of this class understand fully whether or not the implementation of TaskExecutor used will start tasks synchronously or asynchronously. The default setting uses a synchronous task executor. There is only one required dependency of this Launcher, a JobRepository. The JobRepository is used to obtain a valid JobExecution. The Repository must be used because the provided Job could be a restart of an existing JobInstance, and only the Repository can reliably recreate it.
Since:
1.0
Author:
Lucas Ward, Dave Syer, Will Schipp, Michael Minella, Mahmoud Ben Hassine
See Also:
JobRepository, TaskExecutor

Field Summary
Fields
Modifier and Type Field Description
protected static org.apache.commons.logging.Log logger

Constructor Summary
Constructors
Constructor Description
SimpleJobLauncher()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`afterPropertiesSet()`	Ensure the required dependencies of a `JobRepository` have been set.
`JobExecution`	`run(Job job, JobParameters jobParameters)`	Run the provided job with the given `JobParameters`.
`void`	`setJobRepository(JobRepository jobRepository)`	Set the JobRepository.
`void`	`setTaskExecutor(org.springframework.core.task.TaskExecutor taskExecutor)`	Set the TaskExecutor.

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

- Field Detail
  - logger
```
protected static final org.apache.commons.logging.Log logger
```
- Constructor Detail
  - SimpleJobLauncher
```
public SimpleJobLauncher()
```
- Method Detail
  - run
```
public JobExecution run(Job job,
                        JobParameters jobParameters)
                 throws JobExecutionAlreadyRunningException,
                        JobRestartException,
                        JobInstanceAlreadyCompleteException,
                        JobParametersInvalidException
```
    Run the provided job with the given JobParameters. The JobParameters will be used to determine if this is an execution of an existing job instance, or if a new one should be created.
    Specified by:
    run in interface JobLauncher
    Parameters:
    job - the job to be run.
    jobParameters - the JobParameters for this particular execution.
    Returns:
    the JobExecution if it returns synchronously. If the implementation is asynchronous, the status might well be unknown.
    Throws:
    JobExecutionAlreadyRunningException - if the JobInstance already exists and has an execution already running.
    JobRestartException - if the execution would be a re-start, but a re-start is either not allowed or not needed.
    JobInstanceAlreadyCompleteException - if this instance has already completed successfully
    JobParametersInvalidException - thrown if jobParameters is invalid.
  - setJobRepository
```
public void setJobRepository(JobRepository jobRepository)
```
    Set the JobRepository.
    Parameters:
    jobRepository - instance of JobRepository.
  - setTaskExecutor
```
public void setTaskExecutor(org.springframework.core.task.TaskExecutor taskExecutor)
```
    Set the TaskExecutor. (Optional)
    Parameters:
    taskExecutor - instance of TaskExecutor.
  - afterPropertiesSet
```
public void afterPropertiesSet()
                        throws java.lang.Exception
```
    Ensure the required dependencies of a JobRepository have been set.
    Specified by:
    afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean
    Throws:
    java.lang.Exception

Class SimpleJobLauncher

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

logger

Constructor Detail

SimpleJobLauncher

Method Detail

run

setJobRepository

setTaskExecutor

afterPropertiesSet