Event Vs method

[Former Member]

Hi Friends,

Is there any difference between WD event and Method or it is same?

[vijayakhanna_raman · Accepted solution]

Hi,

Event will be in Component Controller not in view controller.

U can handle this event at runtime using Event-handler in any view.

This is not possible in an method.

This can be used to write a seperate code i.e. Funtionality and used where ever required.

Regards,

Vijayakhanna Raman

[Former Member]

Nav,

WD is irrelevant here. The same concepts are applied in many (if not all) frameworks/libraries.

Methods are "active" -- you explicitly know sole traget and "actively" execute method on it.

With events you do not know target or targets, and just brodcast away a notification. Anyone interested may subscribe to event and handle it in its own way.

Valery Silaev

EPAM Systems

http://www.NetWeaverTeam.com

[Former Member]

Hi VS,

Can we say that these events are asynchronous?

[Former Member]

Nav,

Yes and no.

In fact, they are one-way -- typically you do not get reply from receivers. Technically, they may be implemented as asynhronous, but in WD control is returned back after all event handlers are completed.

VS

[Former Member]

Hi Valery Silaev,

Thanks!

[Former Member]

Hi,

I assume that WD Event is a Event Handler.

Basically, a Event Handler is a method.

But, the difference is that Event Handler is invoked on an

Event of the developer or the end user where as a method you need to invoke in your code. You need to call the method explicitly.

Hope it helps you.

Regards,

Maheswaran.B

[Former Member]

Thanks VijayaKhanna Raman and Maheswaran B !