struts 2, implements Action / extend ActionSupport

[john lee <sh...@yahoo.com>]

 
 
i am aware that in struts 2, when define an action, it could be 
 
   public class XXX implement Action 
   or
   public class XXX extends ActionSupport
 
what is the difference b/w above two? in other words, in what kind of scenario, pick which one?
 
tks in advance
 
john 


      

Re: struts 2, implements Action / extend ActionSupport

[Dave Newton <ne...@yahoo.com>]

john lee wrote:
> i am aware that in struts 2, when define an action, it could be 
>  
>    public class XXX implement Action 
>    or
>    public class XXX extends ActionSupport
>  
> what is the difference b/w above two? in other words, in what kind of scenario, pick which one?

If you want validation or I18N support, and don't want to write it 
yourself, use ActionSupport. As Steven said, you don't actually *have* 
to implement Action for things to work (I don't recall if there's any 
performance penalty incurred by forcing the use of reflection to find an 
execute() method).

Dave


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Re: struts 2, implements Action / extend ActionSupport

[Dave Newton <ne...@yahoo.com>]

Martin Gainty wrote:
> assuming you are using Actions
>  annotation to define multiple action methods within a single action class?  @Action("/different/url")
> http://cwiki.apache.org/WW/convention-plugin.html

How does this differentiate between implementing Action or extending 
ActionSupport?

Dave


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RE: struts 2, implements Action / extend ActionSupport

[Martin Gainty <mg...@hotmail.com>]

assuming you are using Actions
 annotation to define multiple action methods within a single action class?  @Action("/different/url")
http://cwiki.apache.org/WW/convention-plugin.html

?
Martin 
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> Date: Sun, 12 Apr 2009 22:11:09 +0800
> Subject: Re: struts 2, implements Action / extend ActionSupport
> From: kenshin520@gmail.com
> To: user@struts.apache.org
> 
> >
> > basically ActionSupport gives you some default implemented methods to make
> > your life easier.
> 
> if you dont need them you can simply implement Action
> But for Struts2 you dont even HAVE to implement the Action interface, as
> long as you have a method called "execute" or any named method that your
> calling
> 
> >

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Re: struts 2, implements Action / extend ActionSupport

[Steven Yang <ke...@gmail.com>]

>
> basically ActionSupport gives you some default implemented methods to make
> your life easier.

if you dont need them you can simply implement Action
But for Struts2 you dont even HAVE to implement the Action interface, as
long as you have a method called "execute" or any named method that your
calling

>