[Zope-dev] Re: ZClassNG and ProductNG proposal

[Andreas Jung]

--On 22. April 2007 02:52:58 +0100 Martin Aspeli <optilude at gmx.net> wrote:

> Christopher Lozinski wrote:
>> I think I have figured out how to do it.   This looks like a ZMI based
>> ZClass, you can define it through the ZMI, you can add instance
>> variables, you can add instance methods, all through the ZMI,  but you
>> can change inheritance, because it is really a product created on the
>> file system.
>
> If there is such an easy translation from ZMI-based ZClass to filesystem
> product, then why not write the filesystem product in the first place?
>
>> Check out the proposal.
>> http://wiki.zope.org/zope2/ZClassesNGAndProductNG
>
> ... the names ZClassNG and ProductNG (especially the latter) are bad, to
> begin with, but oh well. You wouldn't be the first. :)
>
> You're assuming there is an obvious one-to-one mapping between ZClass
> syntax and non-ZClass products on the filesystem, which may or may not be
> true.

He's trying to reinvent wheels? Reads a bit like GrokNG :-)

>
> You're relying on code generation, so you'll run into trouble when the
> two versions (ZODB and filesystem) diverge for whatever reason (someone
> edited the code, say).

Generating code is a one-way-road. Either your internal model is executable
somehow or better write the code by hand.

>
> Also, Zope needs a restart to load a new product, which will mess with
> the workflow.
>
> But the bigger picture here is that an awful lot of people are telling
> you that spending your time on this is a bad idea, that you'll probably
> find it more difficult than you imagine, and that if you are going to
> invent new things, your time may be better spent pulling the same
> direction that most other people are.
>
> By all means, give it a go, but you will probably find it difficult to
> get help when you are stuck because (a) no-one else seems to care and (b)
> not many other people seem to even know how this should work.
>

Amen. Sorry Christopher but the quality of this proposal is more than poor.

Andreas

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