3 Replies Latest reply on Feb 25, 2008 11:59 PM by pmuir

    Events and support for remove listener

    msystems
    msystems Feb 23, 2008 11:55 AM

      I have a case where I want to add and remove an event programmatic. Events have an addListener() (and addListener() support only methodBindingExpression) but a removeListener() is missing, why?


      A solution is to use:


      Init.instance().addObserverMethod()



      and 


      Init.instance().removeObserverMethods()



      But removeObserverMethods() removes all observers from a component - not useful every time.


      removeObserverMethods() javadoc/comment:


         /**
    * Remove any observer methods registered on the component. Needed to clean
    * out old observer methods on hot deploy
    * @param component
    */



      Looks like this is internal Seam stuff :-)
      And I guess Init is supposed to be used by Seam and not the users of the Seam framework !?


      But at the moment, I need to use


      Init.instance().addObserverMethod()
Init.instance().removeObserverMethods()



      if I want to solve my issue.


      Would it be possible to expand Events with above functionality? Should I create a JIRA?

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        • 1. Re: Events and support for remove listener
          msystems
          msystems Feb 23, 2008 12:17 PM (in response to msystems)

          Events are application scoped. In my case, I need support for session scoped events.


          Would it be possible to support session scoped events?

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          • 2. Re: Events and support for remove listener
            msystems
            msystems Feb 23, 2008 4:15 PM (in response to msystems)

            Kenneth Christensen wrote on Feb 23, 2008 12:17 PM:


            Events are application scoped. In my case, I need support for session scoped events.

            Would it be possible to support session scoped events?



            Ups! That's wrong. Events are not only application scoped - they are processed in the current context.

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            • 3. Re: Events and support for remove listener
              pmuir
              pmuir Feb 25, 2008 11:59 PM (in response to msystems)

              Kenneth Christensen wrote on Feb 23, 2008 11:55 AM:


              Looks like this is internal Seam stuff :-)
              And I guess Init is supposed to be used by Seam and not the users of the Seam framework !?


              It's not really public API, but you can use it :-)


              Would it be possible to expand Events with above functionality? Should I create a JIRA?


              Yes, we can expose a public API for this. Create a feature request in JIRA.

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