public Task updateTask(Long taskId, Task task) {
if (!taskExists(taskId)) throw new TaskNotFoundException();
Task taskOnDisk = taskJpaRepository.findOne(taskId);
taskOnDisk.setDescription(task.getDescription());
return saveTask(taskOnDisk);
}
public Task getTaskById(Long taskId) {
Task task = taskJpaRepository.findOne(taskId);
if (task == null) throw new TaskNotFoundException();
return task;
}