[AccessD] Find First in an Array?

Max Wanadoo max.wanadoo at gmail.com
Thu Feb 19 15:45:28 CST 2009


Hi Shamil,
I was just going to make exactly the same recommendations!  Great minds
think alike, eh?

^_^

Max

-----Original Message-----
From: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Salakhetdinov
Shamil
Sent: 19 February 2009 21:40
To: Access Developers discussion and problem solving
Subject: Re: [AccessD] Find First in an Array?

You decide, Rocky,
 
Do you have time for that experimenting?

May I warn you about what is known as:
 
"Premature Optimization"
http://c2.com/cgi/wiki?PrematureOptimization 
 
and 
 
"Premature Generalization" 
http://c2.com/cgi/wiki?PrematureGeneralizationIsEvil 
 
?
 
Have a look:
 
"Death by premature generalization" 
http://ryanfarley.com/blog/archive/2004/04/30/570.aspx
 
 
My name is Shamil, you know :) and I have been a premature generalizer in
many cases I must admit - but I'm getting more and more XP/SCRUM agile
habits these days, and I'm getting more fun from programming real life
business tasks without my premature generalization and optimization not so
good(?) past habits...
 
IMO in the case of the context of this thread using .Seek is the closest and
quickest yet good enough (and maybe the only one needed for many years
ahead) solution/transition from your existing .FindFirst-based code...
 
If that would not be good/speedy enough in your case then I'd probaably use
static array loaded on first call/after reset using .GetRows() with
accompanying static collection with FormName/ControlName as a key to keep
value for static array entry index, and a function to get translation value
using this collection/array...
 
etc...
  
Thank you.
 
--
Shamil

-----Original Message-----
From: "Rocky Smolin at Beach Access Software" <rockysmolin at bchacc.com>
To: "'Access Developers discussion and problem
solving'"<accessd at databaseadvisors.com>
Date: Thu, 19 Feb 2009 09:56:55 -0800
Subject: Re: [AccessD] Find First in an Array?

> 
> Dang.  I think you're right.  Gotta try that.  You think it'll be faster
> than SEEK? 
> 
> 
> Rocky Smolin
> Beach Access Software
> 858-259-4334
> www.e-z-mrp.com
> www.bchacc.com
>  
>  
> 
> -----Original Message-----
> From: accessd-bounces at databaseadvisors.com
> [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Drew Wutka
> Sent: Thursday, February 19, 2009 9:33 AM
> To: Access Developers discussion and problem solving
> Subject: Re: [AccessD] Find First in an Array?
> 
> Hmmmm, actually, the way you have this set up, you could do this just fine
> without an array or collection.
> 
> Instead of this:
> 
> For Each ctl In frm
>     rstControls.FindFirst "fldLanguageForm = '" & argForm & "' and
> fldLanguageControl = '" _
>         & ctl.Name & "'"
> 
> Do this:
> 
> strSQL="SELECT fldLanguageControl, fldLanguage" & strLanguageToTranslate &
"
> FROM tblYourTableName WHERE fldLanguageForm=""" & me.Name & """"
> set rs=New Recordset
> rs.open strsql,currentproject.connection, adopenkeyset,adlockreadonly if
> rs.eof=false then rs.movefirst do until rs.eof=true
> 	me(rs.fields(0).value).Caption=rs.fields(1).value
> Loop
> Rs.close
> Set rs=nothing
> 
> That way you are pulling the recordset up....and just running through it
> once...instead of trying to find every record based on the control.
> 
> Drew
> 
> -----Original Message-----
> From: accessd-bounces at databaseadvisors.com
> [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Rocky Smolin at
> Beach Access Software
> Sent: Thursday, February 19, 2009 12:57 AM
> To: 'Access Developers discussion and problem solving'
> Subject: Re: [AccessD] Find First in an Array?
> 
> John:
> 
> The table layout is:
> 
> fldLanguageID             Autonumber
> fldLanguageForm           Text Name of the form that the control is on
> fldLanguageControl        Text Name of the control 
> fldLanguageControlType    Text Not Used
> fldLanguageEnglish        Text
> fldLanguageChineseComplex Text
> fldLanguageChineseSimple  Text
> fldLanguageSpanish        Text
> fldLanguageFrench         Text	
> 
> In the translate routine I use:
> 
> Set frm = Forms(argForm)
> For Each ctl In frm
>     rstControls.FindFirst "fldLanguageForm = '" & argForm & "' and
> fldLanguageControl = '" _
>         & ctl.Name & "'"
> 
> Where argForm is the form name passed to the function.  So I think I might
> get a big boost in response time by indexing fldLanguageForm and
> fldLanguageControl.
> 
> There are only about 2500 records in the table so I'm thinking that the
> whole recordset is probably in memory anyway.
> 
> 
> Rocky Smolin
> Beach Access Software
> 858-259-4334
> www.e-z-mrp.com
> www.bchacc.com
>  
>  
> 
> -----Original Message-----
> From: accessd-bounces at databaseadvisors.com
> [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of jwcolby
> Sent: Wednesday, February 18, 2009 5:46 PM
> To: Access Developers discussion and problem solving
> Subject: Re: [AccessD] Find First in an Array?
> 
> Does this imply a table structure of:
> 
> TR_ID		Auto
> TR_CtlName	Text
> TR_L1		text (or memo?) for language 1
> TR_L2		text (or memo?) for language 2
> Etc
> 
> I would suggest that you add a form (or container) field.  A control name
is
> unique on a form, however it could be the same on different forms but have
a
> different language string.  By having a form field you could pull subsets
of
> records based on the form name, then use the control name (now guaranteed
to
> be unique), then obtain the language string.
> 
> It appears from your email however that you already have this stuff set
up,
> so you might be resistant to modifying how it works.
> 
> If this is all just one big table with control names guaranteed to be
unique
> then you could just stash it in one big collection.  There is a problem
> however which is that classes get pretty slow as they get large.  If you
get
> up past 10,000 strings (I don't know the exact point) it would bog back
> down.  If you broke it down into controls on a form, then you would ensure
> that the total strings in any given collection is pretty small.
> 
> Again I would build a class for all the code and the collection to load
one
> form.  then a supervisor class to hold instances of this form class keyed
on
> form name.
> 
> John W. Colby
> www.ColbyConsulting.com
> 
> 
> Rocky Smolin at Beach Access Software wrote:
> > Max:
> > 
> > That would work except the table driven approach is so much more
> easier.
> > Easy to add a language (got French and Spanish now in addition to 
> > traditional and simplified Chinese), too, or make a change to a
> translation.
> > To add a language I just add a column for that language to the Control
> 
> > and Messages tables and send them to the translator.  Add that 
> > language to the language selector combo on the Preferences form, and 
> > walla! Another language.
> > 
> > 
> > Rocky Smolin
> > Beach Access Software
> > 858-259-4334
> > www.e-z-mrp.com
> > www.bchacc.com
> 
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