Call AM method on ActionComponent  events

Hi ,
i need to perform some action like calling AM method ,isUserValid() tio check if user is valid or not on
clicking action components like commandbutton and commandlink.
i can archive this by adding PagePhaseLsitener ,and in beforePahseListener.
i can handle action event update model process Phase.
but the issue is i need to execute the AM method only actioncomponet event processing phase
how to we know the event was generated by Action Component?
please suggest
Thanks,
Karnakar

Hi all
requirement is to call AM method on clicking action compoents.
and every page in application will call the above methods.
i am overriding action component behiavour ,on clicking of actioncomoent it will execute AM method
Thanks
Karnakr

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    [http://java.sun.com/javase/6/docs/api/javax/swing/SwingWorker.html|java Doc SwingWorker sample usage]
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    Alan
    London

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