Spring Batch Quartz scheduler configuration

BatchQuartzConfig.java

@Configuration
@EnableBatchProcessing
class BatchConfiguration {

    @Autowired
    private JobRepository jobRepository;

    @Value("${job.cron.expression}")
    private String cronExpression;

    @Autowired
    private DataSource dataSource;

    @Bean
    SimpleJobLauncher jobLauncher() {
        SimpleJobLauncher launcher = new SimpleJobLauncher();
        launcher.setJobRepository(jobRepository);
        launcher.setTaskExecutor(new SimpleAsyncTaskExecutor());
        return launcher;
    }

    @Bean
    JobRegistry jobRegistry() {
        return new MapJobRegistry();
    }

    @Bean
    JobExplorerFactoryBean jobExplorer() {
        final JobExplorerFactoryBean jobExplorer = new JobExplorerFactoryBean();
        jobExplorer.setDataSource(dataSource);
        return jobExplorer;
    }

    @Bean
    JobRegistryBeanPostProcessor jobRegistryBeanPostProcessor() {
        final JobRegistryBeanPostProcessor processor = new JobRegistryBeanPostProcessor();
        processor.setJobRegistry(jobRegistry());
        return processor;
    }

    @Bean
    JobDetailFactoryBean unfileDocumentsJob() throws Exception {
        JobDetailFactoryBean bean = new JobDetailFactoryBean();
        bean.setJobClass(JobLauncherDetails.class);
        bean.setGroup("quartz-batch");
        final JobDataMap jobDataMap = new JobDataMap();
        jobDataMap.put("jobName", DocsRoomConstants.UNFILE_HERMES_DOCUMENTS_JOB_NAME);
        jobDataMap.put("jobLocator", jobRegistry());
        jobDataMap.put("jobLauncher", jobLauncher());
        bean.setJobDataMap(jobDataMap);
        return bean;
    }

    @Bean
    @Conditional(EnableSchedulerCondition.class)
    SchedulerFactoryBean schedulerFactoryBean() throws Exception {
        SchedulerFactoryBean factoryBean = new SchedulerFactoryBean();
        factoryBean.setExposeSchedulerInRepository(true); // for java melody
        factoryBean.setTriggers(cronTriggerBean().getObject());
        Properties properties = new Properties();
        properties.setProperty(SchedulerFactoryBean.PROP_THREAD_COUNT, "2");
        factoryBean.setQuartzProperties(properties);
        return factoryBean;
    }

    @Bean
    CronTriggerFactoryBean cronTriggerBean() throws Exception {
        CronTriggerFactoryBean bean = new CronTriggerFactoryBean();
        bean.setJobDetail(unfileDocumentsJob().getObject());
        bean.setCronExpression(cronExpression);
        return bean;
    }

    /**
     * Enable the Quartz scheduler only when a certain property is true.
     */
    private static class EnableSchedulerCondition implements Condition {

        @Override
        public boolean matches(final ConditionContext context, final AnnotatedTypeMetadata metadata) {
            return context.getEnvironment() != null && "true".equalsIgnoreCase(context
                    .getEnvironment().getProperty("job.enable.scheduling", "false"));
        }

    }
}