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I have a wizard in my Seam project which has four pages. When user starts the wizard by coming to the first page (wizard1.xhtml) I start a conversation. To do that in my pages.xml I have following code.

<page view-id="/pages/wizard1.xhtml">
  <begin-conversation join="true"/>
</page>

At the final page of the wizard (wizard4.xhtml) I have a save button and I end the conversation by using @End annotation.

@End
public String save() {}

However while moving through the wizard, the user can redirect to a page outside the wizard by clicking a link. Note that if this happens the conversation is not yet ended.
What I want is to immediately end the conversation as soon as the user is no longer on a wizard page (wizard1.xhtml,wizard2.xhtml,wizard3.xhtml or wizard4.xhtml).
I found this post but a timeout is not a good choise in my case since I want to end the conversation immediately.

Community
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prageeth
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3 Answers3

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I think the most straight forward and natural solution of your problem is to make your click-able link like this:

 <s:link value="here is the link" view="/expectedView.xhtml"  
         action ="#{targetBean.endingConversation()}"/>

And your endingConversation() method can be like this:

  @End
  public void endingConversation(){
       //do cleanup code

  }

The idea is simple, you should employ a guard in every possible exiting points.

Sazzadur Rahaman
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  • Hey, thanks for the answer. The previous answer also highlights this point. But in this way, I have to do this in all of the links in my page. I know I can end the `conversation` when I am **redirected to** a certain page by creating a navigation rule in `pages.xml` and using `` tag. I am looking for a similar solution to end the conversation when **redirected from** current page. – prageeth Nov 22 '12 at 15:52
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Not sure if it will work, just a thought.

Create some javascript function using a4j:jsFunction that calls a method that's annotated with @End.

You then add this jsFunction as an onClick handler to all Your links. (Not sure if onClick is the best handler though).

When the user navigates away from Your wizard the method is called and the conversation should be ended.

prageeth
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gadeynebram
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  • Thanks for your reply. All my links are `commandLink`s and so I can directly call a method without using a ` – prageeth Nov 21 '12 at 03:21
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If you are using pages.xml (or the per-page page.xml files) to implement page navigation in your application, then you have to specify redirect behavior, for each page, based on the action string. In the navigation rule for each redirect that is not continuing your wizard conversation, you can add <end-conversation />. This is similar to other suggestions, but the result would be navigation rules files which illustrate your applications page flow including the demarcation of your long-running conversations.

S Balough
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  • Thanks for the answer. This is somewhat different from the above answers but as you said the concept is the same. Actually I'm looking for a way to end the conversation, when redirecting **from** a page, not redirecting **to** a page. Anyway thanks for your suggestion.:) – prageeth Dec 10 '12 at 03:24