[Zope-dev] SkinScript Questions

[Steve Alexander]

Michael R. Bernstein wrote:

> Hi all,
> 
> I had some questions about SkinScripts:
> 
> 1) Are there any naming conventions for SkinScripts?

I have used the names "attributes" "domain_catalog" and "site_index" 
quite often.

I use "attributes" for computed attrubutes, "domain_catalog" to trigger 
cataloging in a ZCatalog within the Specialist, and "site_index" for 
cataloging in an acquired ZCatalog common to the entire application.

I typically use the SiteIndex for text searches across many types of 
content.

I also often call a Class Extender "instance_methods".

On other applications, I've split the SkinScript according to whether it 
provides attributes for the object computed from its own real 
attributes, or whether it provides attributes and triggers that link the 
object to other objects and take care of referential integrity.



> 2) Is there any reason (other than factoring) to split
> SkinScripts up, or is putting all your declarations in one
> SkinScript ok?

Each SkinScript statement gets compiled into a separate 
provider/trigger/agent/whatever, so it doesn't make any difference to 
how fast the SkinScript executes.

You do need to split your SkinScript up according to what proxy roles 
they need.

There's another related issue of what attributes to compute in a single 
SkinScript statement, but that's pretty much covered in the 
documentation. I looked into this quite deeply when I found I needed the 
"INVALIDATE FOR" syntax.

--
Steve Alexander
Software Engineer
Cat-Box limited