[AccessD] Re-Invent The Wheel??

I worked on my little project/problem over the weekend, attempting to
use a class based solution and of course having some problems. 

 So needless to say My hand is raised up high!!!

It really would be cool to have a set objects that could handle most
text exporting needs one may have....


Robert Gracie


-----Original Message-----
From: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of John Colby
Sent: Monday, October 17, 2005 11:15 AM
To: 'Access Developers discussion and problem solving'
Subject: Re: [AccessD] Re-Invent The Wheel??

I do the same thing, only I have a class pair that does it.  I have a
parent/child table pair - the name of the query or table that the data
is coming from, then a table of the fields for that query/table.  The
field table has fields for the ID of the parent query/table record, name
of the field being formatted and the formatting string.  I use the
formatting string to just coerce the data into a formatted string using
format$(data, format$).

The controller class is passed the name of the query so that it opens
the query as a recordset.  It then opens the appropriate data set in the
child Fields table, and reads out the fields into field classes.  Each
field class "knows" how to format the data since each field class
instance is fed all of the data from one of the field records that you
mention - the field name and the format string.  Then the controller
class just steps through the recordset, calling the appropriate field
class instance and telling it to format the data and return the string.
The controller class appends the strings returned from the field classes
and writes the finished string out to the text file.

As you can probably guess, mine is tied to my framework and therefore
isn't easily extractable, however the class pair concept is dead easy to
implement.  If AccessD would like to get together a development team to
work on this we could build a little library that implements the package
and put it up on AccessD's (and my) site for download.  I can put up a
forum on my site to use for the dev team.

If anyone wants to do this raise your hand.  If we have sufficient
interest I would be willing to lead the team (if you want).  

John W. Colby
www.ColbyConsulting.com 

Contribute your unused CPU cycles to a good cause:
http://folding.stanford.edu/

-----Original Message-----
From: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Reuben
Cummings
Sent: Monday, October 17, 2005 10:27 AM
To: Access Developers discussion and problem solving
Subject: Re: [AccessD] Re-Invent The Wheel??


I just did this and my system uses a table that holds the field name,
how long the field should be when text, and if there should be leading
zeros or trailing blanks.

This way I can create a text file for any database I have just by typing
in the field names I need extracted and the data type and length
required for output.  In this case, I had some data that was numbers and
the state required that they have leading zeros - that's why I mention
data type.

Then it uses code similar to Seth's or Stuart's to create the actual
string.

Reuben Cummings
GFC, LLC
812.523.1017


> -----Original Message-----
> From: accessd-bounces at databaseadvisors.com
> [mailto:accessd-bounces at databaseadvisors.com]On Behalf Of Stuart 
> McLachlan
> Sent: Saturday, October 15, 2005 5:53 AM
> To: Access Developers discussion and problem solving
> Subject: Re: [AccessD] Re-Invent The Wheel??
>
>
> On 15 Oct 2005 at 12:03, Gustav Brock wrote:
> > Go to Seth's site:
> >
> > http://www-personal.ksu.edu/~sgsax/download/file_io.txt
>
> > >>> robert at servicexp.com 15-10-2005 02:20 >>>
> >
> > Hello, All
> >  Does anyone have some text exporting code that I can use.. I need 
> > to come up with a system that will pull data from multiple tables, 
> > format the data, name fields and export said data out in a very 
> > specific fixed width txt file.
> >


--
AccessD mailing list
AccessD at databaseadvisors.com
http://databaseadvisors.com/mailman/listinfo/accessd
Website: http://www.databaseadvisors.com