[Cps4] Non-java repository proof of concept

[Lennart Regebro]

Now it seems we are focusing more on the JSR repository, so I guess this 
  is a bit outdated now... ;)

But anyway, I started work before on a repository thingamjig for Zope3. 
So far it is only a proof of concept for a CPS3 style repository in 
Zope3. I spent a bit cleaning it up today anyway, and I can check it it, 
or put it up somewhere if somebody is interested.

I think it's pretty neat, and it's very flexible and extensible. The 
only major part I haven't solved is how to figure out what the default 
is if you don't explicitly say which revision you want. Currently it 
just takes the last one. ;)


Quick overview:

Basically, there is a repository (local utility) and ProxyingFolders. 
The rest is traversal magic, where you get a specific revision by using 
namespaces.

So, assuming we have the proxying folder "workspaces",

/workspaces/content/++proxy++version/1

will return version 1 of "content", and

/workspaces/content/++proxy++version/2

will return version 2.

/workspaces/content/++proxy++lang/en

Will return english and

/workspaces/content/++proxy++version/1/++proxy++lang/fr

The french variation of version 2.


If somebody wants to check this out, I can put it up on z3labs svn or 
something. If not I'll ask on the Zope3 list of somebody wants it. As we 
are moving towards using JSR, I don't have much incentive to finish this...