Re: [aspectj-users] Review of "Eclipse AspectJ"

[<cn_kylin-public@xxxxxxxxxxxx>]

Hi all,

Firstly, I am very excited with this book "Eclipse 
AspectJ" 's sample application "simple insurance".

I learn a lot from this excellant AOP sample
application
Many design ideas we can use in future projects,
thanks
all contributors.

And finally,  One design question about the sample 
application, why the business object in sample not 
adopt Mixin design, just like use Mixin tech to build
the BO with very reused and smaller BO. From my view, 
this is a big design improvement using AOP and OO 
togather. The initial idea from the author's weblog:
http://www.aspectprogrammer.org/blogs/adrian/2004/05/person_owns_dog.html

Thanks for your reply!

Yiming Wang

 --- Adrian Powell <aspectj-users@xxxxxxxxxxxxxxxx>
的正文：
> I just finished the new "Eclipse AspectJ" by the
> AspectJ team and 
> thought this group might be interested in hearing
> about it.  
> Congradulations to all of the authors, by the way -
> it is an impressive 
> work.  But I'm getting ahead of myself...
> 
> Title:  "Eclipse AspectJ: Aspect-Oriented
> Programming with AspectJ and 
> the Eclipse AspectJ Development Tools"
> Authors: Adrian Colyer, Andy Clement, George Harley,
> and Matthew Webster
> Publisher: Addison-Wesley
> Copyright: 2005, Pearson Educational Inc.
> Details: 
>
http://www.amazon.com/exec/obidos/tg/detail/-/0321245873/102-7986454-6009739
> 
> (Disclaimer: like the authors, I also work for IBM. 
> I do not work with 
> them directly and do not speak for anyone other than
> myself.)
> 
> In Part 1, "Introducing Eclipse, AspectJ and AJDT",
> we are led through 
> the building of a prototype insurance application
> (SimpleInsurance).  
> Along the way, we are introduced to Eclipse, the
> AspectJ language and 
> the AspectJ Development Tools (AJDT).  The aspects
> are not presented as 
> pre-built, but we get to see how they are selected,
> written, refactored 
> and, even debugged.  I found the discussion
> interesting, and saw new 
> ways to use the tooling to prevent problems, but it
> did mean that even 
> simple features went through a lot of hoops which
> were not always clear 
> at the time.  Thrown into the mix were a number of
> side-bars which 
> explained the development philosophy and
> architecture behind AspectJ to 
> a depth that I have only glimpsed in some of the
> mailing list 
> discussions.  I am using AspectJ and some of these
> sidebars took me 
> several minutes to digest.  I don't like to think
> about how a genuine 
> newcomer would react.  Thrown into the mix were
> screen captures of 
> simple wizards and instructions on how to save
> files, making for some 
> unintentionally funny contrasts.
> 
> In Part 2, "The AspectJ Language", things calm down
> as we go back to the 
> beginning and cover the AspectJ language in full
> detail.  As one would 
> expect, they have produced the clearest and most
> comprehensive overview 
> of the language I have seen.  Everything is
> explained, generally using 
> code snippets and object-interaction diagrams to
> reinforce their 
> points.  For complex issues, there are a number of
> sidebars which delve 
> into the design of AspectJ.  I learned many new
> things, not only about 
> AspectJ but about the Java language itself.
> 
> Finally, in Part 3, "Putting it All Together", we
> are able to get into 
> the "meat" of AOP and discuss how to develop our own
> AO application.  We 
> get to see how to adopt AspectJ, how to develop with
> aspects, and how to 
> design applications with AO.  Armed with a richer
> understanding of 
> AspectJ, we take a look back at the insurance
> application that we worked 
> on in Part 1 and see what benefits we've achieved. 
> We briefly revisit 
> the discussion about integrating AspectJ with
> Hibernate, and get to see 
> how we would use Spring to improve our solution even
> further.  There is 
> great stuff here, but my only problem with this
> section is that there is 
> just too much material to cover in the 100 pages it
> gets.  As they say, 
> a whole book could be written on this topic (any
> takers?).
> 
> 
> I couldn't help comparing this book to "AspectJ In
> Action", though the 
> two are quite different in many ways.  "Eclipse
> AspectJ" definitely 
> contains the most in-depth information about AspectJ
> and the AJDT.  
> Using the same example (the SimpleInsurance
> application) throughout 
> meant that we can see AspectJ being used in many
> different parts of 
> development.  There are many aspects in "Eclipse
> AspectJ" which I am 
> keen to use in my applications.  The problem is that
> I'm still debating 
> with colleagues at work if I *should*.  Where
> "AspectJ In Action" spent 
> some time explaining different patterns and showing
> where different 
> aspects should be used and where they should not,
> "Eclipse AspectJ" 
> presents the tools but leaves the rest up to us.  To
> my mind, that is 
> the most important difference between the two. 
> While "Eclipse AspectJ" 
> cannot be matched for sheer depth, it does not
> always provide enough 
> context to be used by new AspectJ developers.  It is
> a good resource for 
> existing AspectJ developers and will give you a
> complete understanding 
> of the language and the tooling, but will be
> standing beside "AspectJ In 
> Action" on my bookshelf.
> 
> 
> 
> Contents:
> Part 1: Introducing Eclipse, AspectJ, and AJDT
>   Ch 1: Getting Started
>   Ch 2: First Steps in AJDT
>   Ch 3: Extending the Application
>   Ch 4: More AJDT
> 
> Part 2: The AspectJ Language
>   Ch 5: An Overview of AspectJ
>   Ch 6: Straight to the Point
>   Ch 7: Take My Advice
>   Ch 8: Inter-Type Declarations
>   Ch 9: Aspects
>   Ch 10: Using the AspectJ API
> 
> Part 3: Putting it All Together
>   Ch 11: Adopting AspectJ
>   Ch 12: Advanced AJDT
>   Ch 13: Aspect-Oriented Design
>   Appendix A: Command-Line AspectJ
>   Appendix B: AspectJ Language Syntax
>   Appendix C: Next Steps
>   Appendix D: AJDT Icon Reference
> 
> 
> 
> _______________________________________________
> aspectj-users mailing list
> aspectj-users@xxxxxxxxxxx
>
http://dev.eclipse.org/mailman/listinfo/aspectj-users
>  

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