How to know which component triggerd an p:ajax request

Question

I have multiple input field with a p:ajax with a listener. They all connect to the same listener. How can I know what component triggerd the listener?

Answer 1

The AjaxBehaviorEvent is not specific to RichFaces. It's specific to JSF2 itself. So you can just keep using it in PrimeFaces.

public void retrievePostalCodeCity(AjaxBehaviorEvent event) {
    UIComponent component = event.getComponent();
    // ...
}

As an alternative, or for the case that it's really not possible elsewhere, you could always use the new JSF2 UIComponent#getCurrentComponent() method.

public void retrievePostalCodeCity() {
    UIComponent component = UIComponent.getCurrentComponent(FacesContext.getCurrentInstance());
    // ...
}

By the way, the very same construct should work just fine with JSF2's own . I do not see any reason to use here. It would however be the only way if you were actually using a PrimeFaces component such as .

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Unrelated to the concrete problem, the event="change" is the default already. You can just omit it.