I'm glad Ed replied because I missed your reply Anil... I wasn't ignoring
you :)

Ed covered it well... when I do this, I tend to do it slightly
different... I write an Action that has an extra empty method,
realExecute()... execute() calls realExecute(), and any "common" code,
like your transformation logic, is in execute()... then I extent this
class to create the Actions for my application, I override realExecute(),
and that's that.  Same basic concept, just a slightly different structure.

Still saying filter though :)

Frank


-- 
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com
AIM/Yahoo: fzammetti
MSN: [EMAIL PROTECTED]
Author of "Practical Ajax Projects With Java Technology"
 (2006, Apress, ISBN 1-59059-695-1)
Java Web Parts - http://javawebparts.sourceforge.net
 Supplying the wheel, so you don't have to reinvent it!

On Thu, December 14, 2006 9:59 am, Ed Griebel wrote:
> You would define a base action that extends
> org.apache.struts.action.Action and includes a method execute() or
> maybe a helper method doSetup().
>
> Your action classes would then extend this BaseAction class and then
> one of the first things you would do in execute() would be to call
> super.execute() or super.doSetup().
>
> But, like Frank said, it would be better to decouple your logic from
> Struts by implementing a servlet filter which will work regardless if
> using struts 1.2, 1.3, 2.0, or just plain old servlets+JSPs.
>
> HTH,
> -ed
>
> On 12/14/06, Anil Kumar T <[EMAIL PROTECTED]> wrote:
>>
>> Hi Frank,
>>
>> Referring to your response..
>> you might also be able
>> to have a base Action that all your Actions extend from, and the base
>> action does the transformation before the real work happens.  This might
>> work if you don't need the transformation to happen before that point.
>>
>> How does this works ? Theoretically I understand this, but how to
>> implement this? I mean where do we mention our CustomizedBaseAction
>> class name? some where in properties ? Can you tell me..?
>>
>> Anil.
>>
>>
>>
>> -----Original Message-----
>> From: Frank W. Zammetti [mailto:[EMAIL PROTECTED]
>> Sent: Wednesday, December 13, 2006 1:03 AM
>> To: Struts Users Mailing List
>> Cc: 'user@struts.apache.org'
>> Subject: Re: Preprocessing of request
>>
>> Your best bet most likely is a servlet filter.  Do the transformation
>> and
>> stuff the transformed content in request as an attribute, then grab it
>> later in your Actions.
>>
>> Which version of Struts are you using?  If pre-1.3, modifying the RP is
>> one of the few other options as Dave mentioned... you might also be able
>> to have a base Action that all your Actions extend from, and the base
>> action does the transformation before the real work happens.  This might
>> work if you don't need the transformation to happen before that point.
>>
>> If using 1.3.x, you could write a command to do it and modify the RP
>> chain.
>>
>> If 2.x, an interceptor is probably the right answer.
>>
>> However, in all these cases, a servlet filter would work, and would keep
>> your transformation logic abstracted out of Struts itself, so one less
>> thing to worry about if you upgrade versions later :)
>>
>> Frank
>>
>>
>> --
>> Frank W. Zammetti
>> Founder and Chief Software Architect
>> Omnytex Technologies
>> http://www.omnytex.com
>> AIM/Yahoo: fzammetti
>> MSN: [EMAIL PROTECTED]
>> Author of "Practical Ajax Projects With Java Technology"
>>  (2006, Apress, ISBN 1-59059-695-1)
>> Java Web Parts - http://javawebparts.sourceforge.net
>>  Supplying the wheel, so you don't have to reinvent it!
>>
>> On Tue, December 12, 2006 1:17 pm, O'Toole, Joe wrote:
>> > Hi
>> >
>> > My application receieves an xml request. I need to perform some
>> > transformation of this xml before performing business logic etc.
>> >
>> > Is there anyway I can configure through struts that I can invoke a
>> java
>> > class that does this task as I don't want to perform it in the action
>> or
>> > the
>> > model. Something like the plug-in element in the struts-config.xml
>> that
>> > invokes a java class that adheres to correct interface for performing
>> > tasks
>> > when the app is starting/stopping.
>> >
>> > I cannot see where I can do this and I would really to make this task
>> > configurable and push it out from the action or model
>> >
>> > Thanks
>> >
>> > Joe
>> >
>> >
>> >
>>
>>
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