Example usage for org.springframework.batch.core.repository JobInstanceAlreadyCompleteException JobInstanceAlreadyCompleteException

Introduction

In this page you can find the example usage for org.springframework.batch.core.repository JobInstanceAlreadyCompleteException JobInstanceAlreadyCompleteException.

Prototype

public JobInstanceAlreadyCompleteException(String string) 

Source Link

Usage

From source file:org.springframework.batch.core.repository.support.SimpleJobRepository.java

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

    Assert.notNull(jobName, "Job name must not be null.");
    Assert.notNull(jobParameters, "JobParameters must not be null.");

    /*/*  ww w. j av a 2s  .c o  m*/
     * Find all jobs matching the runtime information.
     *
     * If this method is transactional, and the isolation level is
     * REPEATABLE_READ or better, another launcher trying to start the same
     * job in another thread or process will block until this transaction
     * has finished.
     */

    JobInstance jobInstance = jobInstanceDao.getJobInstance(jobName, jobParameters);
    ExecutionContext executionContext;

    // existing job instance found
    if (jobInstance != null) {

        List<JobExecution> executions = jobExecutionDao.findJobExecutions(jobInstance);

        // check for running executions and find the last started
        for (JobExecution execution : executions) {
            if (execution.isRunning() || execution.isStopping()) {
                throw new JobExecutionAlreadyRunningException(
                        "A job execution for this job is already running: " + jobInstance);
            }
            BatchStatus status = execution.getStatus();
            if (status == BatchStatus.UNKNOWN) {
                throw new JobRestartException("Cannot restart job from UNKNOWN status. "
                        + "The last execution ended with a failure that could not be rolled back, "
                        + "so it may be dangerous to proceed. Manual intervention is probably necessary.");
            }
            if (execution.getJobParameters().getParameters().size() > 0
                    && (status == BatchStatus.COMPLETED || status == BatchStatus.ABANDONED)) {
                throw new JobInstanceAlreadyCompleteException(
                        "A job instance already exists and is complete for parameters=" + jobParameters
                                + ".  If you want to run this job again, change the parameters.");
            }
        }
        executionContext = ecDao.getExecutionContext(jobExecutionDao.getLastJobExecution(jobInstance));
    } else {
        // no job found, create one
        jobInstance = jobInstanceDao.createJobInstance(jobName, jobParameters);
        executionContext = new ExecutionContext();
    }

    JobExecution jobExecution = new JobExecution(jobInstance, jobParameters, null);
    jobExecution.setExecutionContext(executionContext);
    jobExecution.setLastUpdated(new Date(System.currentTimeMillis()));

    // Save the JobExecution so that it picks up an ID (useful for clients
    // monitoring asynchronous executions):
    jobExecutionDao.saveJobExecution(jobExecution);
    ecDao.saveExecutionContext(jobExecution);

    return jobExecution;

}

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