RE: "Per-user" polymorphism -- newbie question

Thanks for the responses.

Mike is right, I should be thinking of _q_traverse.

[I know the bit about the XML/XSLT seemed non-germane, but it implies
mapping URI's to the filesystem is inappropriate if you wish to have a
speedy application. (Carlo Contadini's mod_xslt apache module is coming
close, but it is not fully Apache 2 compatible yet and doesn't cache
stylesheets yet, which led me to Quixote/libxml2/libxslt).]

I had been thinking of something (not really Python code yet) along the
lines of:

class UserRoleBaseClass

class BossClass(UserRoleBaseClass)
	def q_traverse(self,path)

	def hireEmployee

	def fireEmployee

	def praiseEmployee

	def reprimandEmployee

....and...

class myDirectory

	def _q_index

	def q_traverse(self,path)
		if session.user_role:
			return session.user_role._q_lookup

Anyone foresee a problem with this?
-al

Al Pacifico
Seattle, WA

-----Original Message-----
From: Mike Orr [mailto:[email protected]] 
Sent: Thursday, August 11, 2005 9:13 PM
To: Al Pacifico
Cc: [email protected]
Subject: Re: [Quixote-users] "Per-user" polymorphism -- newbie question

[email protected] wrote:

>Al Pacifico wrote:
>
>What I'm thinking of:
>I'd like to make my content served by Quixote essentially polymorphic,
>determined by the role the user takes. This points me in the direction of
>subclassing a base class for each role. I imagine q_lookup() would call a
>method within a class determined by the client's role.
>  
>


If you need _q_lookup anyway.  If you're just using it for permission 
checking, ._q_traverse would be more appropriate.  But if the component 
names have to be calculated from the permissions, or there are so many 
names that having a separate method for each would be 
difficult/impossible, ._q_lookup would be appropriate.

/foo/bar             -- Regular method.
/articles/1234    -- ._q_lookup  (one catchall component, possibly
                         returning a sub-Directory)
/showdate/2005/08/11    -- ._q_traverse   (several catchall components
                         taken as a unit)