[AccessD] Editing Records

For about a decade I have worked on the principle that the same form can
handle displays, inserts and updates.
Lately I have been experimenting, and my tentative conclusions are that I
have been wrong for a decade; that a better approach is to have a reead-only
navigation form of some sort, containing an edit button, which does not flip
flags in the current form but rather loads an frmEditMyDataSource form
specifically designed for insert or edit. 

In this model, no single form contains the logic for multiple operations.
Rather, one designs forms for Insert and Edit separately. The behaviours are
radically different. Why complicate the logic of one form by injecting two
purposes?

I'm not throwing this out as a definitive conclusion, but merely one of my
regular queries (select * from projects where decision_certainty < .8).
I have coded innumerable dual/treble purpose forms, with logic distributed
among their controls, and in a few recent experiments have noticed that the
logic is a lot cleaner if I code something like this:

On DoubleClick
	If Me.NewRecord = True Then
		Open the Insert form
	Else
		Open the Edit form
	End If

Opinions? Diatribes? Scathing denunciations?

-----Original Message-----
From: accessd-admin at databaseadvisors.com
[mailto:accessd-admin at databaseadvisors.com] On Behalf Of Jim DeMarco
Sent: March 5, 2003 2:56 PM
To: accessd at databaseadvisors.com
Subject: RE: [AccessD] Editing Records

In cases where a number of items (boolean variables in this case) must be
true for an event to occur I usually multiply the booleans by each other.
If I get a 0 result I know the event should not happen:

blnDoTheEvent = ((blnValidate1 * blnValidate2 * blnValidate3) <> 0)

If blnDoTheEvent Then
  'do it here
End If

HTH,

Jim DeMarco
Director of Product Development
HealthSource/Hudson Health Plan


-----Original Message-----
From: Bob Gajewski [mailto:bob at renaissancesiding.com]
Sent: Wednesday, March 05, 2003 2:50 PM
To: 'accessd at databaseadvisors.com'
Subject: RE: [AccessD] Editing Records


Andy

Just shooting from the hip, but couldn't that be done using a loop?

Seems like it might be a lot of coding, even for just 13 validations ... and
then it would handle more if they were added later.

Regards,
Bob Gajewski

On Wednesday, March 05, 2003 14:22 PM, Andy Lacey
[SMTP:andy at minstersystems.co.uk] wrote:
> Tim
> Just a suggestion 
>  
> Dim blnNeedsUpdate As Boolean
>  
> 
> blnNeedsUpdate =False
> 
> If validation1 = false then 
>         blnNeedsUpdate =True
> 
> End if 
> 
> If validation2 = false then 
>         blnNeedsUpdate =True
> 
> End if 
> 
> 
> etc
> 
> if blnNeedsUpdate = true
> 
> ..edit
> 
> change all fields
> 
> ..update
> 
>  
> 
> Andy Lacey
> http://www.minstersystems.co.uk <http://www.minstersystems.co.uk/> 
> 
> 
> 
> -----Original Message-----
> From: accessd-admin at databaseadvisors.com
> [mailto:accessd-admin at databaseadvisors.com] On Behalf Of Swisher,
> Timothy B 
> Sent: 05 March 2003 13:06
> To: accessd at databaseadvisors.com
> Subject: [AccessD] Editing Records
> 
> 
> 
> Hello group, I have a procedure (A2k) that opens a recordset (DAO) and
> cycles through the data validating/updating several fields for each
> record.  My question is, what is the best way to do this, 
> 
> Like this 
> 
> ..edit 
> If validation1 = false then 
>         change data 
> End if 
> 
> If validation2 = false then 
>         change data 
> End if 
> ..update 
> 
> Or  
> 
> If validation1 = false then 
>         .edit 
>         change data 
>         .update 
> End if 
> 
> If validation2 = false then 
>         .edit 
>         change data 
>         .update 
> End if 
> 
> I have about 13 validations that need to be done on about 90,000
> records.  Each validation goes to a SQL Server BE and check the validity
> of the data.  There is a huge difference in speed opening and closing
> the recordset so many times, but if that is the better way to go, then
> so be it.  All help is appreciated.  TIA 
> 
> Tim 
> 
>  << File: ATT00006.htm >> 

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