On March 12, 2015 7:29:02 PM CET, Alexander Burger <a...@software-lab.de> wrote:
>let me announce 7fach BlitzMenu, our first attempt for a public
>application since 9 years :)
>It is for gastronomers, restaurants or canteens, to maintain their
>dishes and beverages in a database, and allow them to generate their
>daily or weekly menus with just a few mouse clicks.
>Independent from the question whether it will be a commercial success
>hope it does), it has some interesting aspects from a technical
>(PicoLisp) point of view:
>1. It allows the user to directly edit PostScript layout templates in a
> Canvas. Then these layouts can be combined with groups of articles
> from the database to generate PDF and HTML files.
>2. I found out that the '+Bag' relations can be nested. This allows the
> creation of multi-dimensional data structures, directly in the DB
> Normally, a (+List +Bag) represents a two-dimensional table, which
> maps to a '+Chart' in the GUI. To my own surprise, it works also if
> an element in a bag is a (+List +Bag) again (i.e. nested Bags),
> resulting in a three-dimensional structure:
> (rel grp (+List +Bag) # Groups/Articles
> ((+Bool)) # Aktive
> ((+String)) # Description
> ((+List +Bag) # Articles
> ((+Bool)) # Aktive
> ((+Link) (+Art)) ) ) # Article
> And: I found a way to allow direct editing of these structures in the
> GUI, by connecting charts on the different levels with radio buttons.
> In principle, this can be extended to as many dimensions as desired.
>The system is ready for production use now, and can be found at
>Initial language is German, but you can switch to English if you like.
>Other languages are planned but not yet supported.
>The second entry in the navigation on the left is "Introduction". Here
>you may view a short video (without sound) showing the basic usage.
>And the third entry is "Try yourself". If you click on "Start demo
>application" you get a private demo database in a sandbox, where you
>play around yourself. Note that your data are lost when you close the
>Please don't submit the form on "New registration" (unless, of course,
>you want to become a customer ;)
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