Re: [Merlinwork-developers] p4a

[Christian G. W. <cw...@xe...>]

On Tue, Sep 21, 2004 at 09:18:24AM +0200, Fabrizio Balliano wrote:
> > Do you guys have any code for us to look at yet?  How much work
> > will it be to port MerlinWork applications to p4a?
> 
> it is in the p4a cvs:
> 
> http://sourceforge.net/projects/p4a
> 
> but we have no db_source working untill now.
> 
> To port an application there is some work because many things have changed to 
> allow a better programming experience, some of those are:
> 
> - new naming (java like), all classes have p4a_ prefix
> - no global_listener, the main listener extends p4a
> - no application autostart, you start p4a instancing the application with
>  $app =& new("appClassName");
>  $app->main();
>  so we can script the interface and write robots that simulate
>  user interaction
> - a mask now has to extend the p4a_mask
> - there's no default sheet in a mask, so you have to instance a sheet
>  and anchor object on it
> - new widget: canvas, to build apps with absolute positions, you
>  can use is instead of sheet in a mask and anchor object at a
>  defined top/left coordinate (es: 20px 20px)
> - new complex db_source with 3 uses: no_cache, page_cache,
>  complete_cache (still not finished) and support for multiple
>  primary keys
> - some more that now i do not remember...

Does p4a improve performance over MerlinWork?  You might remember my
attempts to cache pre-initialized listeners because the init() function
takes a long time.  Will p4a either speed up the initialization or allow
caching pre-initialized objects?

Thanks,
xn