Re: Requirements for implementing Cocoon Blocks

Paul Hammant wrote:
> Nicola,
> 
>>> Some separation of Cocoon kernel services from Cocoon using webapps 
>>> with (I'm guessing) the need for some Avalon lifecycle interfaces to 
>>> be honored for this type of Cocoon deployment. Particularly 
>>> ServiceManager.
>>
>>
>>
>> Sorry Paul, I don't get this. Too concise ;-)
>> Could you please expand? Thanks. 
> 
> 
> I love code examples :
> 
>   CocoonKernelUsingCocoonServlet  extends HttpServlet, implements 
> Serviceable, Startable  {        public void doGet( // blah ) { // blah }
>        public void service( ServiceManager sm) { // blah }
>        public void start() { // blah }
>        public void stop() { // blah }
>   }
> 
> I.e. the Servlet container also (non servlet spec) provides Avalon 
> lifecycle to servlet (if implemented as ever).

Nah, mixes concerns.

The CocoonServlet should be used as a servlet interface.

Then we have the CocoonCLI (currently Main.java) that connects to the 
command line

Future plans include

  - CocoonMailet + MailEnvironment -> cocoon as a james mailet
  - CocoonBean + BeanEnvironment -> cocoon as a functional bean

I don't like the concept of "beans". I think Cocoon should be an avalon 
block itself, and, at that point, implement a Service interface (it 
already implements a Processor interface which is very similar to that 
but was created earlier in the Stylebook days)

Like Nicola said, it's not perfect and we'll need some refactoring, but 
I'm pretty confident that Cocoon could be deployed as a block in a 
standalone avalon container and include an embeddable container (or 
light embeddable facade to the underlying standalone one) for its own 
blocks.

Note, however, that Cocoon *must* be able to run as a servlet and still 
be fully functional, so it must be able to include an embeddable 
container which is capable of all the things that we outlined in the 
Cocoon Block design specs.

-- 
Stefano Mazzocchi                               <[email protected]>
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