RE: [OS-webwork] WebWork2 Action Chains and Interceptors

[Jason Carreira]

Title: Message

See below

-----Original Message-----
From: Cameron Braid [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 15, 2003 2:35 PM
To: [EMAIL PROTECTED]
Subject: [OS-webwork] WebWork2 Action Chains and Interceptors

I have an action chain that implements a three phase process - Update, Read, Render

 

I have two actions PhaseOneAction and PhaseTwoAction, and a JSP view

I have two interceptors SessionInterceptor and TransactionInteceptor.

 

I want to achieve one of the following nestings

 

SessionInterceptor.before()

    TransactionInterceptor.before()

        PhaseOneAction.execute()

    TransactionInterceptor.after()

    PhaseTwoAction.execute();

SessionInterceptor.after() 

 

You could achieve this by making your Interceptors a little crafty... The SessionInterceptor is already in place... you just need to parameterize your TransactionInterceptor as to whether to process on before, after, or both. Then, on the first action, you have it process before, and on the second, you have it process on after. I think this is probably not a Good Thing (tm), since it depends on the chaining, but it would work. Alternately, you could have the TransactionInterceptor, in the after call, look for the Transaction in the ActionContext or request, or wherever and use it if it's there or skip processing if it's not, then remove it once it's done. A little less hacky. Can't you just have your Action class itself handle the transaction in the execute()?

 

or

 

SessionInterceptor.before()

    TransactionInterceptor.before()

        PhaseOneAction.execute()

    TransactionInterceptor.after()

SessionInterceptor.after()

{note: I don't want a client redirect here}

SessionInterceptor.before()

    PhaseTwoAction.execute();

    ServletDispatcher.processPage();

SessionInterceptor.after()

 

however, currently I am only able to achieve

 

SessionInterceptor.before()

    TransactionInterceptor.before()

        PhaseOneAction.execute()

        PhaseTwoAction.execute();

        ServletDispatcher.processPage();

    TransactionInterceptor.after()

SessionInterceptor.after()

 

I also would like to be able to specify that the action state is coppied from PhaseOneAction to PhaseTwoAction in the same way that the chaining process currently happens.

 

Anyone have any ideas ?

 

Cameron.