From: Jamis Buck <jgb3@...>
Date: 2004-09-05T22:25:21+09:00
Subject: Re: Anyone using Copland? I need feedback!

Simon Strandgaard wrote:
> On Sunday 05 September 2004 02:54, Jamis Buck wrote:
> 
>>Simon Strandgaard wrote:
> 
> [snip]
> 
>>Basically, look at the subsystems (and the sub-subsystems, and so
>>forth). You might have a VFS subsystem, a command subsystem, a rendering
>>subsystem, and so forth. The VFS subsystem might be further broken down
>>into a zip abstraction, an FTP abstraction, and an abstraction for a
>>conventional file system.
>>
>>Once you have an idea of what all the pieces are (and how they relate to
>>each other--that's important!) you then arbitrarily change their name
>>from "subsystem" to "service", and you're halfway to Copland. The
> 
> 
> ah.. changing subsystem to service.. it begins to making sense to me.
> The FreeRIDE project uses something similar, with services that can be loaded, 
> started, stopped, etc. I think thier IoC is named FreeBase?

Interesting -- I'll have to look at that. Might be a good place to glean 
ideas from. :)

> I want subsystems to be defined in the configuration file.. so that things 
> which doesn't belong in the editor doesn't bloat it. Maybe copland is the 
> solution to setting up services in these configuration files?

Copland could be one solution. I've maintained for a long time that 
there is nothing you can do with IoC that you couldn't do without it. 
It's merely one approach to the problem.


> FreeBASE has a logging system.. where each service can have their own log.
> Do you provide similar feature?

Yup. When using the BuilderFactory (or related factory service) to 
construct a new service, you can specify that a logger be passed as a 
constructor parameter, or set as a property on the new object. That's 
how the logging interceptor works, using the logger for the service it 
is wrapping.

(There's a chapter in the Copland manual in CVS about factory 
services--when I release 0.7.0 I'll post the updated manual as well. 
Hopefully that chapter will make the above paragraph a bit more 
understandable.)

>>>Copland looks interesting to me.
>>
>>That alone is a promising statement. Now if I can just get you to
>>_adopt_ it... ;)
> 
> 
> At the moment im busy with my studies and kind of lacks time..  I think I will 
> do some experiments with for my configuration system with copland. But I 
> cannot promise that I will use copland, nor when I will do these experiments.

No worries. But if you do start to tinker with it, you might want to 
join the copland-users mailing list 
(http://rubyforge.org/mailman/listinfo/copland-users). I'll be happy to 
answer any questions you have.

> 
> --
> Simon Strandgaard

-- 
Jamis Buck
jgb3@email.byu.edu
http://www.jamisbuck.org/jamis

"I use octal until I get to 8, and then I switch to decimal."