Re: MV4.0 and XML

["Rob Zimmerman" <rob@readysite.net>]

******    message to minivend-users from "Rob Zimmerman" <rob@readysite.net>     ******

Mike,

Many thanks for the response. I have seen XML interfacing with EDI as well 
as  Java classes applet to the database so the thought of Minivend also 
having these abilities was most intriguing. But I do appreciate the honest 
response and you have confirmed that i must finish my perl studies... ;-)

Rob
-----

> 
> Quoting Rob Zimmerman (rob@readysite.net):
> > 
> > I am just curious as to how XML is going to be integrated into MV4.0. I have 
> > been taking a look at DataChannels methods for converting a tab deliminated 
> > files to XML files. Is this how XML will be integrated? 
> > 
> 
> After doing quite a bit of work on XML/minivend 4, I must sheepishly
> backtrack a bit.
> 
> My original intent was to use XML::Parser, which is blazingly fast.
> But after looking at the syntax requirements and consulting with someone
> who really knows about XML and has implemented it in a large system,
> I felt that the ordinary user would have trouble with the incredibly
> tough syntax requirements of XML. So the next strategy was to "compile"
> pages into XML and then run them. Upon investigation, there are some
> difficulties with the whole concept that are much too complex to get into
> here. Also, in the process of investigating this I managed to speed up
> the current parser by 10-60% depending on context.
> 
> Suffice it to say I have still not determined what will be done, but
> it is a distinct possiblity that XML will not be a part of MiniVend 4.
> 
> But the good news on performance and for embedded Perl programmers
> will be an easy interface like:
> 
> [perl]
>     $name = $Tag->value('name');
>     # transpose
>     $title = $Tag->value('title');
> 
>     $result = $Tag->value( {
>                                 name => 'name',
>                                 set => "$title $name"
>                             }
>                         );
>     # Update userdb
>     $result = $Tag->data( {
>                                 table => 'userdb',
>                                 column => 'name',
>                                 key => $Tag->session( 'mv_username'),
>                                 value => $result,
>                             }
>                         );
>     return "Name is now $result, and it is updated in the user database.";
> [/perl]
> 
> There will also be a row-setting interface that will allow looping
> over a database or search with easy reading/update of sets of columns.
> 
> [perl]
>     my $accessor = $Tag->accessor(
>                                 { table => 'userdb', column => 'expiration', }
>                                     );
>     my $settor =   $Tag->settor(
>                                 { table => 'userdb', column => 'expiration', }
>                                     );
> 
>     for (qw/ joe jane jim june /) {
>         my $expire = $accessor->($_)
>         next if $expire;
>         $settor->($_ => "20010101");
>         $out .= "Changed $_ expire to 20010101\n";
>     }
>     return $out;
> [/perl]
> 
> -- 
> Mike Heins                          http://www.minivend.com/  ___ 
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>                                     131 Willow Lane, Floor 2  | ||  _ \
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> that the Y1K problem caused         <mikeh@minivend.com>     |___|  _ <
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