Spring Quatrz Dynamic Annotation Based Java Config - spring

Question

Sorry i had to ask it over here as i searched a lot tried many things but failed to achieve the result.
So what i am trying to do is i have a service which give me the list of the Jobs along with the interval at which they need to run so , what i want to do is loop over the list of the jobs and schedule them using Spring Quartz and i want to do them using the java config and not XML based .
This application will be a web application which will be running on a server, a maven project.
I found result and the are mainly using the Custom Annotation . Is there any sample or example which i can try or use.?
The problem is we are very new to all this and none of us have a idea how to proceed with this so any help is very appreciated.
Thanks in advance,
Vishesh

Answer 1

Have your #Confugation class implement SchedulingConfigurer. This allows you to schedule tasks programmatically. For example
#Configuration
#EnableScheduling
public class TaskConfiguration implements SchedulingConfigurer{
#Autowired
private TaskDao taskDao; // implement TaskDao to read tasks from DB
#Override
public void configureTasks(ScheduledTaskRegistrar taskRegistrar){
List<Task> tasks = taskDao.findAllTasks();
for(Task task : tasks){
Runnable taskJob = createTaskJob(task); // create task by reflection
taskRegistrar.addCronTask(taskJob , task.getCronExpression());
}
}
}
public class Task implements Serializable{
private String cronExpression;
private String jobClass;
//getters and setters
}

Answer 2

#ekem chitsiga workaround will also do. Following is another alternate to run your cron jobs based on the cron epressions you set.
#Configuration
#EnableScheduling
public class Scheduler {
private static final Logger logger = LoggerFactory
.getLogger(Scheduler.class);
#Autowired
private JobRepository jobRepository;
/*
* Cron expression ="0 0/1 * 1/1 * ?" for every minute
*/
#Scheduled(cron = "0 0/1 * 1/1 * ?")
public void sendNotification() {
logger.info("Initializing Cron job scheduler....");
//Do you scheduler specific work here
}
}