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List: odtug-java-l
Subject: Re: Q: Experiences, best practices for ADF / BC4J / TopLink
From: Steve Muench <Steve.Muench () oracle ! com>
Date: 2007-10-18 17:49:32
Message-ID: F001.00610A16.20071018102527 () fatcity ! com
[Download RAW message or body]
Jiri,
I'll let others reply with their experiences, but here are some updated
references for you on ADF Business Components are here:
ADF Developer's Guides and Recommended Technology Stacks for
JDeveloper/ADF 10.1.3
<http://www.oracle.com/technology/products/jdev/tips/muench/guidesandstacks/index.html>
The ADF Learning Center
<http://otn.oracle.com/products/adf/learnadf.html> has our developer's
guides, tutorials, and samples both for Forms/4GL developers as well as
for advanced J2EE developers.
Steve Muench, http://radio.weblogs.com/0118231
http://otn.oracle.com/products/adf/learnadf.html
Jiri Dvorak wrote:
> I am looking for feedback / experiences / best practices / real-life
> stories from people and teams developing substantial business Web
> functionality with Oracle ADF. A particular topic is, positive/negative
> experiences with using the BC4J data-mapping layer, and the "Data Binding"
> interfaces, which link BC4J (or TopLink/EJB3) data providers to user
> interface (views).
>
> We have tried for a while to use ADF with BC4J "by the book", with Data
> Bindings and everything - the philosophy was to minimize technical risks
> by using tried-and-true approaches. After almost a year, we have seen
> this approach working really well for relatively simple, very literal
> scenarios (OK, perhaps a little more complex than the EMP-DEPT model, but
> the same approach).
>
> When it comes to more dynamic / abstracted data models, and to more
> complex UI design (dynamic buttons which navigate to different pages based
> on context, mixing data from several Application Modules on the same page
> etc.), developers are telling us that the Data Binding feels like a
> straightjacket, and that they need to implement complex workarounds to
> make BC4J with Data Binding behave they way users want.
>
> And, on top of that, practically everybody taking advanced Java courses
> and reading books these days seems to be thinking in terms of "standard"
> industry patterns, exposing relational data ("Model" tier) roughly in the
> same way as EJB3 and/or JPA (via TopLink or Hibernate) ... that means, a
> Data Access Object (DAO) plain Java Bean representing an "image" of a
> single data object row cached in memory, and a "Data Transfer Object" or
> "Business Object Delegate" (or whatever is the term of the day) acting as
> a gatekeeper of access to individual data objects, and enabling finder
> methods and CRUD methods. And any attempts to model data access in UML,
> which are based on industry standards and patterns, seem to lead to this
> paradigm, too.
>
> We cannot possibly be the only organization facing this issue, and when I
> look at Oracle Web pages for ADF, I am confused about the "official"
> direction ... certainly, all the articles and PDFs on JPA and TopLink seem
> to be more recent than "traditional" BC4J articles (the ones I saw are at
> least 2 years old).
>
> Can anybody please give me any feedback on what other "good,
> Oracle-compatible" ;-) ADF-based development projects are doing these
> days? Would anybody know what Oracle is using for the internal Fusion
> applications development?
>
> Thanks a lot
>
> - Jiri
>
> ----------------------------------------------
> Jiri Dvorak
> Templates 4 Business, Inc.
> Cell Phone: 604.220.0529
> E-mail: Jiri.Dvorak@t4bi.com
> Web: www.t4bi.com
> ----------------------------------------------
>
>
>
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<tt>Jiri, <br>
<br>
I'll let others reply with their experiences, but here are </tt><tt>some
updated references for you on ADF Business Components are here:<br>
<br>
<a
href="http://www.oracle.com/technology/products/jdev/tips/muench/guidesandstacks/index.html"><span
class="topstoryhead">ADF Developer's Guides and Recommended Technology
Stacks for JDeveloper/ADF 10.1.3</span></a><br>
</tt><br>
<tt>The <a href="http://otn.oracle.com/products/adf/learnadf.html">ADF
Learning Center</a> has our developer's guides, tutorials, and samples
both for Forms/4GL developers as well as for advanced J2EE developers.<br>
</tt><br>
<pre class="moz-signature" cols="72">Steve Muench, <a class="moz-txt-link-freetext" \
href="http://radio.weblogs.com/0118231">http://radio.weblogs.com/0118231</a> <a \
class="moz-txt-link-freetext" \
href="http://otn.oracle.com/products/adf/learnadf.html">http://otn.oracle.com/products/adf/learnadf.html</a>
</pre>
<br>
<br>
Jiri Dvorak wrote:
<blockquote cite="mid:F001.00610A13.20071018091528@fatcity.com"
type="cite">
<pre wrap="">I am looking for feedback / experiences / best practices / real-life
stories from people and teams developing substantial business Web
functionality with Oracle ADF. A particular topic is, positive/negative
experiences with using the BC4J data-mapping layer, and the "Data Binding"
interfaces, which link BC4J (or TopLink/EJB3) data providers to user
interface (views).
We have tried for a while to use ADF with BC4J "by the book", with Data
Bindings and everything - the philosophy was to minimize technical risks
by using tried-and-true approaches. After almost a year, we have seen
this approach working really well for relatively simple, very literal
scenarios (OK, perhaps a little more complex than the EMP-DEPT model, but
the same approach).
When it comes to more dynamic / abstracted data models, and to more
complex UI design (dynamic buttons which navigate to different pages based
on context, mixing data from several Application Modules on the same page
etc.), developers are telling us that the Data Binding feels like a
straightjacket, and that they need to implement complex workarounds to
make BC4J with Data Binding behave they way users want.
And, on top of that, practically everybody taking advanced Java courses
and reading books these days seems to be thinking in terms of "standard"
industry patterns, exposing relational data ("Model" tier) roughly in the
same way as EJB3 and/or JPA (via TopLink or Hibernate) ... that means, a
Data Access Object (DAO) plain Java Bean representing an "image" of a
single data object row cached in memory, and a "Data Transfer Object" or
"Business Object Delegate" (or whatever is the term of the day) acting as
a gatekeeper of access to individual data objects, and enabling finder
methods and CRUD methods. And any attempts to model data access in UML,
which are based on industry standards and patterns, seem to lead to this
paradigm, too.
We cannot possibly be the only organization facing this issue, and when I
look at Oracle Web pages for ADF, I am confused about the "official"
direction ... certainly, all the articles and PDFs on JPA and TopLink seem
to be more recent than "traditional" BC4J articles (the ones I saw are at
least 2 years old).
Can anybody please give me any feedback on what other "good,
Oracle-compatible" ;-) ADF-based development projects are doing these
days? Would anybody know what Oracle is using for the internal Fusion
applications development?
Thanks a lot
- Jiri
----------------------------------------------
Jiri Dvorak
Templates 4 Business, Inc.
Cell Phone: 604.220.0529
E-mail: <a class="moz-txt-link-abbreviated" \
href="mailto:Jiri.Dvorak@t4bi.com">Jiri.Dvorak@t4bi.com</a>
Web: <a class="moz-txt-link-abbreviated" href="http://www.t4bi.com">www.t4bi.com</a>
----------------------------------------------
</pre>
</blockquote>
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Author: Steve Muench
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