[AccessD] Using Global Connctions

Love Globals.
They are just as reliable as any other code.
If someone did, it would be me! <VBG>
Sometimes.
Yes, all the time.  I 'hit and release' my ADO Connections all the time,
especially when on a LAN.  In fact, the first vergence from that practice
just happened last night.  I am working on a web interface to a Contact
Request database.  The database is on our Internet Web Server, and the Web
interface is on our Intranet Web Server.  Creating the connection through
the network (from server to server) takes about half a second to a second
(didn't really time it...).  I have multiple classes working on each page,
each of which require db interaction.  Opening and killing the connection
creates unacceptable delays (3 to 4 seconds per page load...I know that's
not too bad, but in comparison to almost instantaneous pulls with the method
I am using now, there is a big difference).  So what I did, was take a major
'class', which represents information about the person logged in (it's used
in every page), and I load an instance of that class, if it hasn't been
loaded.  If it has been loaded, I pull the class from a Session variable,
which has already been loaded.  That class keeps the connection open while
the class is live, so I can then pass the connection object to other
classes, keeping it open the entire time.

With that method, the first page on the site (whatever page is hit) takes a
few moments to load, but from that point on, the site runs as fast as the
user can click.  I left the default timeout of 10 minutes on the session
object, so as long as the user doesn't wait more then 10 minutes before
doing something on the site, they won't experience the temporarily delay in
the  main class loading.

Drew

-----Original Message-----
From: Mark L. Breen [mailto:subs at solution-providers.ie]
Sent: Wednesday, March 12, 2003 3:35 AM
To: accessd at databaseadvisors.com
Subject: [AccessD] Using Global Connctions


Hello All,

As a follow up to Susan Harkins discussion on the command object,

How do you guys use a global connection in your apps

What I have been doing is initialising gccnn when I load the app.  It is G
lobal C onstant cnn.

I then use this Global variable for every ADO section of code.

Do you hate global variables?
do you think that they are unreliable?
do you think that someone is going to come in the middle of the night and
wipe it out?
Do you use a class or property pass it around instead?
In a fat client, LAN, does anyone initialise it and close it each time? (I
presume not)

Just intested in your feedback

Thanks



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