Tuesday, February 07, 2006

ADF Faces and JSF 1.2

JSF 1.2 is right around the corner, and, of course, ADF Faces is going to be right there too, right? Well, not so fast...

ADF Faces took one fairly unusual approach in designing its components. Instead of extending the standard UIComponentBase class like almost everyone else does, we directly extended UIComponent with UIXComponentBase. I chose this path for good reasons - like the FacesBean state saving approach I blogged about a few posts down - but it does carry a penalty. When UIComponent changes, ADF Faces breaks. And UIComponent does change in JSF 1.2. In particular, the move from the JSF EL to the new Unified EL means new getValueExpression() and setValueExpression() methods.

C'est la vie.

So, here's the good news: I'm promising, right here and now, to get a version of ADF Faces out soon that will be based on JSF 1.2. There's one big question to resolve: should it be based on the code in JDev 10.1.3, or on the post-10.1.3 code we're donating to MyFaces? I'm leaning towards the latter, but let me know if you feel differently.


  • Hi Adam, nice to see an update on this. Can you commit to any kind of timeframe for the JSF 1.2 release of ADF Faces?

    Also, if you had it to do over again, wolud you still extend UIComponent directly, rather than UIComponentBase?


    By Blogger edburns, at 2:22 PM  

  • The big gating factor is getting the MyFaces process going, which makes it tough to give an absolute timeframe. I'd be chagrined if it didn't happen in the next two months.

    I'd definitely still extend UIComponent directly. To follow through on a FacesBean-type architecture, which is a major architectural decision for our components, we'd end up needing to override virtually every single method on UIComponentBase, and end up with a bunch of unused instance variables.

    By Blogger Adam Winer, at 10:56 PM  

  • Just to clarify, are you proposing having separate codebases for the JSF 1.1 and JSF 1.2 versions of ADF Faces? If so, doesn't that seem like a maintenance headache?

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    By Blogger edburns, at 7:23 AM  

  • I believe Adam's/Oracles approach to implementing a foundation for UIComponents proves that there's a great degree of flexability to optimize or modify the guts of JSF without affecting existing developers.

    By Blogger Jacob Hookom, at 5:58 PM  

  • Yep, we'd need to have separate codebases, which is a pain (though a decent SCM system makes that rather bearable, since one or the other stream will always be getting a significant majority of development effort.)

    The point I'd want to make to others is that I certainly wouldn't recommend what we did to the average JSF developer. The choice that was right for ADF Faces is not going to be right for everyone.

    By Blogger Adam Winer, at 11:34 PM  

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