org.springframework.batch.core.repository.support
Class SimpleJobRepository

java.lang.Object
  org.springframework.batch.core.repository.support.SimpleJobRepository

All Implemented Interfaces:

JobRepository

public class SimpleJobRepository
extends Object
implements JobRepository

Implementation of JobRepository that stores JobInstances, JobExecutions, and StepExecutions using the injected DAOs.

Author:

Lucas Ward, Dave Syer, Robert Kasanicky

See Also:

JobRepository, JobInstanceDao, JobExecutionDao, StepExecutionDao

Constructor Summary

SimpleJobRepository(JobInstanceDao jobInstanceDao, JobExecutionDao jobExecutionDao, StepExecutionDao stepExecutionDao, ExecutionContextDao ecDao)

Method Summary

void	add(StepExecution stepExecution) Save the StepExecution and its ExecutionContext.
JobExecution	createJobExecution(String jobName, JobParameters jobParameters) Create a JobExecution for a given Job and JobParameters.
JobExecution	getLastJobExecution(String jobName, JobParameters jobParameters)
StepExecution	getLastStepExecution(JobInstance jobInstance, String stepName)
int	getStepExecutionCount(JobInstance jobInstance, String stepName)
boolean	isJobInstanceExists(String jobName, JobParameters jobParameters) Check if an instance of this job already exists with the parameters provided.
void	update(JobExecution jobExecution) Update the JobExecution (but not its ExecutionContext).
void	update(StepExecution stepExecution) Update the StepExecution (but not its ExecutionContext).
void	updateExecutionContext(JobExecution jobExecution) Persist the updated ExecutionContext of the given JobExecution.
void	updateExecutionContext(StepExecution stepExecution) Persist the updated ExecutionContexts of the given StepExecution.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleJobRepository

public SimpleJobRepository(JobInstanceDao jobInstanceDao,
                           JobExecutionDao jobExecutionDao,
                           StepExecutionDao stepExecutionDao,
                           ExecutionContextDao ecDao)

Method Detail

isJobInstanceExists

public boolean isJobInstanceExists(String jobName,
                                   JobParameters jobParameters)

Description copied from interface: JobRepository

Check if an instance of this job already exists with the parameters provided.

Specified by:

isJobInstanceExists in interface JobRepository

Parameters:

jobName - the name of the job

jobParameters - the parameters to match

Returns:

true if a JobInstance already exists for this job name and job parameters

createJobExecution

public JobExecution createJobExecution(String jobName,
                                       JobParameters jobParameters)
                                throws JobExecutionAlreadyRunningException,
                                       JobRestartException,
                                       JobInstanceAlreadyCompleteException

Description copied from interface: JobRepository

Create a JobExecution for a given Job and JobParameters. If matching JobInstance already exists, the job must be restartable and it's last JobExecution must *not* be completed. If matching JobInstance does not exist yet it will be created.

If this method is run in a transaction (as it normally would be) with isolation level at Isolation.REPEATABLE_READ or better, then this method should block if another transaction is already executing it (for the same JobParameters and job name). The first transaction to complete in this scenario obtains a valid JobExecution, and others throw JobExecutionAlreadyRunningException (or timeout). There are no such guarantees if the JobInstanceDao and JobExecutionDao do not respect the transaction isolation levels (e.g. if using a non-relational data-store, or if the platform does not support the higher isolation levels).

Specified by:

createJobExecution in interface JobRepository

Parameters:

jobName - the name of the job that is to be executed

jobParameters - the runtime parameters for the job

Returns:

a valid JobExecution for the arguments provided

Throws:

JobExecutionAlreadyRunningException - if there is a JobExecution already running for the job instance with the provided job and parameters.

JobRestartException - if one or more existing JobInstances is found with the same parameters and Job.isRestartable() is false.

JobInstanceAlreadyCompleteException - if a JobInstance is found and was already completed successfully.

update

public void update(JobExecution jobExecution)

Description copied from interface: JobRepository

Update the JobExecution (but not its ExecutionContext). Preconditions: JobExecution must contain a valid JobInstance and be saved (have an id assigned).

Specified by:

update in interface JobRepository

add

public void add(StepExecution stepExecution)

Description copied from interface: JobRepository

Save the StepExecution and its ExecutionContext. ID will be assigned - it is not permitted that an ID be assigned before calling this method. Instead, it should be left blank, to be assigned by a JobRepository. Preconditions: StepExecution must have a valid Step.

Specified by:

add in interface JobRepository

update

public void update(StepExecution stepExecution)

Description copied from interface: JobRepository

Update the StepExecution (but not its ExecutionContext). Preconditions: StepExecution must be saved (have an id assigned).

Specified by:

update in interface JobRepository

updateExecutionContext

public void updateExecutionContext(StepExecution stepExecution)

Description copied from interface: JobRepository

Persist the updated ExecutionContexts of the given StepExecution.

Specified by:

updateExecutionContext in interface JobRepository

updateExecutionContext

public void updateExecutionContext(JobExecution jobExecution)

Description copied from interface: JobRepository

Persist the updated ExecutionContext of the given JobExecution.

Specified by:

updateExecutionContext in interface JobRepository

getLastStepExecution

public StepExecution getLastStepExecution(JobInstance jobInstance,
                                          String stepName)

Specified by:

getLastStepExecution in interface JobRepository

stepName - the name of the step execution that might have run.

Returns:

the last execution of step for the given job instance.

getStepExecutionCount

public int getStepExecutionCount(JobInstance jobInstance,
                                 String stepName)

Specified by:

getStepExecutionCount in interface JobRepository

stepName - the name of the step execution that might have run.

Returns:

number of executions of the step within given job instance

getLastJobExecution

public JobExecution getLastJobExecution(String jobName,
                                        JobParameters jobParameters)

Specified by:

getLastJobExecution in interface JobRepository

Parameters:

jobName - the name of the job that might have run

jobParameters - parameters identifying the JobInstance

Returns:

the last execution of job if exists, null otherwise