Gonzalo,
>Say I write a class with some kind of business logic:
>
> class Foo { public String getAnswer(String data) { ... } }
>
>The class would in principle benefit with some of the life cycle
>abstractions in Framework. For example, the class could need
>some kind of configuration and logging, so it could be declared
>as:
>
> class Foo implements LogEnabled, Configurable { ... }
>
>Now, I start by testing this class from a simple command line
>program. At this point:
>
>1. Do I gain anything by having Foo implement LogEnabled and
>Configurable?
>
>
Not from the point of view of testing. .....
>2. Who will call the proper configure() method in the class?
>Does the class have to be put into a component manager? This
>seems to me to be the case, and if this is so, then it is kind of
>useless to have a component "living by itself", not as part of a
>component manager. Is this correct?
>
>
But it is not so hard for a Unit Test to Fake a container. Even if you
'test' is a home grown mainable class, the lifecycle methods
can still be activated. Granted configure(..) is harder than
enableLogging(..) but there once made, the reusability is high.
There is an 'ObjectMother' pattern that makes test setup easier.
>3. If the "component by itself" does indeed not make sense: the
>docos talk about running components as stand-alone programs (such
>as my test case). In this case, the test program is responsible
>for taking the component through the life cycle, right? In this
>case, and supposing the component will ONLY be run from a test
>program, is there any value at all in making this class a
>component and having it implement Configurable? I mean, someone
>will have to call the configure() method anyway; why not have the
>component call it itself when appropriate?
>
IoC pattern on avvalon-framework website.
I'll not answer you other questions, as the Cocoon guys can do so with
more authority. Good newbie stuff though.
-ph
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