RE: what say you about subfiles?

["Stone, Brad V (TC)" <bvstone@xxxxxxxxxxxxxx>]

I think one thing about loading a subfile versus loading a select box in
VB is that the select box can be loaded in the background while the user
is performing other operations.  Not sure about VaRPG.

Bradley V. Stone        
bvstone@taylorcorp.com
http://prairie.lakes.com/~bvstone/
"This is not a reasonable place to park?"

> -----Original Message-----
> From: boothm@ibm.net [SMTP:boothm@ibm.net]
> Sent: Tuesday, May 26, 1998 7:34 PM
> To:   MIDRANGE-L@midrange.com
> Subject:      Re: what say you about subfiles?
> 
> I just was looking over IBM's sample subfile program in VaRPG.  I'd
> copied, it, changed the file to display a data file on our AS/400 and
> was
> showing the output to someone that knows the data.  The VaRPG subfile
> offers a "navigator bar", and one of the icons is "Last page."  He
> clicked
> it and laughed, saying "This is a 40,000 record file. Lets see..."
> and
> then looked really funny.  Then he looked again and said "It can't
> read
> the file that fast!"   
> 
> To make a boring story short, a review of the code showed that the
> last
> page had been loaded by taking the number of records in the file and
> subtracting the page size, and filling the subfile from that point.
> Very
> neat, very fast.  Also a new technique I'd not seen before.
> 
> All of which puts me of a mind to ask for a religious discussion on
> subfiles.  If DOU and DOW can start lengthy debate, I should think
> proper
> subfile techniques could be fascinating.  
> 
> One of the downsides of the technique described is that it appears to
> work
> on a physical file only, disregarding all logicals, even if specified.
> 
> -- 
> -----------------------------------------------------------
> boothm@ibm.net
> -----------------------------------------------------------
> 
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