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From "Leo Neumeyer (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (S4-5) Prototype app builder
Date Mon, 12 Dec 2011 18:07:31 GMT

    [ https://issues.apache.org/jira/browse/S4-5?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13167626#comment-13167626
] 

Leo Neumeyer commented on S4-5:
-------------------------------

I summarize the problem here:

{code:title=Builder Pattern|borderStyle=dashed}
class PE {
  PE builderMethod() {
  }
}

class SomePE extends PE {
  void someSetter() {
  }
}

class MyApp extends App {
  onInit {
     PE pe = createPE(SomePE.class).with("XXX");
     SomePE somePE = (SomePE) pe;
     somePE.someSetter();
  }
}
{code} 

How can we do this without requiring a cast? Asking end user to cast is out of the question
of course. I also want to avoid a separate builder class. Ideas?

                
> Prototype app builder
> ---------------------
>
>                 Key: S4-5
>                 URL: https://issues.apache.org/jira/browse/S4-5
>             Project: Apache S4
>          Issue Type: New Feature
>    Affects Versions: 0.5
>            Reporter: Leo Neumeyer
>            Priority: Minor
>             Fix For: 0.5
>
>
> Extend Guice AbstractModule to create a simple application builder layer. The idea is
to evaluate if we can use Guice to do all the wiring including PEs and Streams and Apps.

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