Listener and Performance

[Dang Thi Thuy Tien]

Hi,

I have a question about the listener and performance.

For example:

I have 5 class:

 + Add Attachment Listener

 + Priority Field Change Listener

 + Add Comment Listener

 + Change Status of Issue Listener

 + Change Assignee Listener

All of the classes will listen on

 @EventListener public void onIssueEvent(IssueEvent issueEvent) { 
// Do some thing 
} 

I have 2 way implemented for this problem

Option 1: I register 5 class like this:

eventPublisher.register(AddAttachmentListener.class); 
eventPublisher.register(PriorityFieldChangeListener.class); 
eventPublisher.register(AddCommentListener.class); 
eventPublisher.register(ChangeStatusOfIssueListener.class); 
eventPublisher.register(ChangeAssigneeListener.class); 

And use inside each class function onIssueEvent()

Option 2:

I just register only one class:

eventPublisher.register(IssueEventListener.class);

And in the function onIssueEvent() I will switch to each event.

But, If I register 5 class it will make the code cleaner and easy for reading.

So, which option could I follow?

If I use option 1, will I affect the performance?

Thank you

[Gonchik Tsymzhitov]

Hi! 

you followed 1 option, as 5 listener is too low