[pmwiki-users] pagelist for group default pages

[Patrick R. Michaud]

On Thu, Nov 08, 2007 at 03:12:30PM +0000, Hans wrote:
> Thursday, November 8, 2007, 2:18:39 PM, Patrick R. Michaud wrote:
> 
> > Oh.  How about...?
> 
> >     (:pagelist if="equal {=$Group} {=$Name}":)
> 
> Yes this works.
>     
> >> It is easy to pick out only *.HomePage pages, but not xxx.xxx matches
> >> of group and name part. What does (:template first {=$Group}:) do?
> 
> > It says to process only the first page encountered in each group.
> > Effectively it's an easy way to get a list of groups.
> 
> so using
> 
>    (:pagelist if="equal {=$Group} {=$Name}" fmt=#groupdefaults:)
> 
>    [[#groupdefaults]]
>    (:template first {=$Group}:)
>    * [[{=$Group}/| {=$Titlespaced}]]
>    [[#groupdefaultsend]]
> 
> should be quicker than lets say get  a list of HomePage pages
> 
> with
>     (:pagelist name=HomePage fmt=#title:)   ?

Getting the list of HomePage matches is quicker here.  

In general, the name= option to pagelist should be very fast --
certainly faster than using the if= option (which requires evaluating
the markup expression on every candidate page in the pagelist).

> I know this is a duifferen setup of default pages, I just like to know
> which method will be fastest, when the wiki page numbers go high.
> 
> A third scenario is
> 
>     (:pagelist name=HomePage fmt=#groupdefaults:)
>     
> with the template above.

This third scenario would not display any groups that don't have
a page named "HomePage".

> Are there differences in performance with any of these three?

If all of the groups' home pages are named 'HomePage', then using
name=HomePage should be fastest.  Second fastest will be to use the
if= option, third fastest is (currently) the template.

There's been some discussion about having some sort of option to
pagelist that returns a list of groups' home pages, but I haven't
figured out what this option should be yet.

Pm