Nando,
Very well said. I can certainly see a disconnect now that you put it
the way you did (and particularly after reading your blog entry at
http://aria-media.com/blog/index.cfm/2007/3/14/Instantiation). However,
I still wonder if even given that explanation (though surely a person
would understand better), would they know they needed it if they didn't
understand what inversion of control was, and the purpose it served?
Nando wrote, On 3/14/2007 1:16 PM:
Sammy,
As someone who is self-taught, I'm saying that the language, the
pattern lingo that is used, can be a barrier to understanding what
ColdSpring can do for you in simple terms. It tends to imply to the
learner that they need to study OO patterns before they can use a
framework.
If instead, one says to an aspiring OO newbie who is self-taught:
ColdSpring can instantiate (linked to a clear and simple definition)
the objects or CFCs that your whole application needs for you, and
wire them together so that they can work with each other.
As anyone who has tried to architect an application that uses CFCs can
tell you, working out how the CFCs should work together can be one of
the most difficult parts of designing and coding your application,
especially for a beginner. As you progress, it often involves
reworking of your code significantly, and can easily introduce
mistakes. This is particularly true if someone is inexperienced with
object orientation and hasn't come to the point where they have a
preferred way of organizing their objects to work together. It's also
certainly true for an experienced programmer, because new requirements
or unrecognized aspects of the application can pop up at any time,
forcing you to rethink your design.
ColdSpring uses a simple XML language in it's configuration file that
is easy to pick up. Depending on your level of experience, it can take
anywhere from a hour or two to learn the basics, to perhaps a day if
you are really new to all this. To reorganize the way your CFC's work
together or add another CFC to your app, you can simply and quickly
rewire them in the config file (and perhaps add a bit of code to your
objects). Here are some examples to get you started:
....
....
....
Then show some comprehensive examples, so they can start using it
immediately (although certainly not as well as an experienced OO
architect). Explain a few cavets along the way. And that opens doors
to further learning, as experience is an excellent teacher.
At the end, you can say:
By the way, ColdSpring is based on the Java framework Spring. In
object oriented pattern speak, it's an Inversion of Control container.
For further reading and study,
http://www.martinfowler.com/articles/injection.html is a good place to
start.
On 3/14/07, Sammy Larbi <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
> Nando wrote, On 3/13/2007 5:02 PM:
> >
> >
> > IF ... someone is new to CFCs and OO and all this lingo, they can
> > certainly use ColdSpring without conceptually understanding Inversion
> > of Control. But it probably doesn't at all seem like it to them.
> >
>
> They could, but how would they know they wanted to, or that it would be
> beneficial in particular cases?
>
>
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