Spring Quatrz Dynamic Annotation Based Java Config

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
    }