ScheduledJob (appNG Parent 2.0.0-SNAPSHOT API)

```
public interface ScheduledJob
```
A ScheduledJob is a (periodically or manually triggered) task that can be defined by an Application. The job's jobDataMap can contain any information that the job needs to be executed. For periodical execution, there are two pre-defined entries for the jobDataMap:
- cronExpression
  A cron-expression describing when the ScheduledJob should be executed.
- enabled
  If set to true and the cronExpression property is present (and valid), the ScheduledJob will automatically be scheduled when the platform starts.
- runOnce
  If set to true, this job will only run once per cluster, i.e. it is not executed on each node, which is the default behavior.
- hardInterruptable
  If set to true, this job can safely be interrupted, e.g when a Site is being reloaded. This is achieved by running the job in a separate thread and calling Thread.interrupt().
- allowConcurrentExecutions
  If set to true, multiple instances of this job can run concurrently (default is false).
Author:

Matthias Müller

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`void`	`execute(Site site, Application application)`	This method actually executes the job.
`String`	`getDescription()`	Returns the description for this job.
`Map<String,Object>`	`getJobDataMap()`	Returns a `Map` containing some data needed the execute the job
`default ScheduledJobResult`	`getResult()`	This method is called after execution of the job.
`void`	`setDescription(String description)`	Sets the description for this job.
`void`	`setJobDataMap(Map<String,Object> map)`	Sets the `jobDataMap` for this job.

- Method Detail
  - getDescription
```
String getDescription()
```
    Returns the description for this job.
    
    Returns:
    
    the description
  - setDescription
```
void setDescription(String description)
```
    Sets the description for this job.
    
    Parameters:
    
    description - the description
  - getJobDataMap
```
Map<String,Object> getJobDataMap()
```
    Returns a Map containing some data needed the execute the job
    
    Returns:
    
    the jobDataMap
  - setJobDataMap
```
void setJobDataMap(Map<String,Object> map)
```
    Sets the jobDataMap for this job.
    
    Parameters:
    
    map - jobDataMap
  - execute
```
void execute(Site site,
             Application application)
      throws Exception
```
    This method actually executes the job.
    
    Parameters:
    
    site - the Site to run within
    
    application - the Application to run within
    
    Throws:
    
    Exception - if any error occurs during job execution
  - getResult
```
default ScheduledJobResult getResult()
```
    This method is called after execution of the job. It has to provide the result and optionally some custom information to be stored in the appNG database.
    
    Returns:
    
    the ScheduledJobResult