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From "Leo Neumeyer (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (S4-5) Prototype app builder
Date Mon, 20 Feb 2012 21:21:34 GMT

    [ https://issues.apache.org/jira/browse/S4-5?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13212082#comment-13212082
] 

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

Great feedback, thanks!

* "onField" refers to the field name in the PE class that has a reference to a target Stream
array. That's why I call it onField. "onStream" seems to imply the name of the stream which
would be misleading. "onField" is not required when there is no ambiguity. That is: all stream
fields in the PE are parametrized with different Event types. In that case the EDSL will figure
out what field to use. This is the best idea I came up with, if anyone has an alternative,
we can change. Perhaps we can call it "usePEField"?

* I will look into using a variable number of args for to()

* so you would use something like onStream(SomeStream.class, SomeKeyFinder.class).usePEField("someField")
[I don't think I can overload the method so the optional "usePEField" method would have to
be separate. What do people think?

* edsl is a completely separate and optional project that depends on core but core doesn't
depend on edsl. This pattern will help create alternate UIs. So I don't think we want UI code
in core. The unit tests cases should be in the examples or in edsl projects.





                
> 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
>
>         Attachments: s4-app.png, s4-fluent.pdf
>
>
> 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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