Hi Chris,
For the web enabling of DP it was essential to be able to pass an identifier
into DP from the commandline which could be used to partition out each
user's set of parameters pumped in from the imported transaction log
otherwise multiple simultaneous users would not be possible. This was done
with a new switch that Lew added, /SID (a session id), its value can then be
retrieved with the usef.field[0] which was a modification to the function
usually used for controlling user access..
So for example my web script would start DP with say the commandline
DP myapp.str /W /SID-2q3w4e5r /EI-2q3w4e5r.log
Each of my transaction logs entries would be tagged with that SID and my
report would write the results back in a file 2Q3W4E5R.OUT, which my script
would be waiting for
But using the same facility you could start DP with say
DP myapp.str /SID-%USERNAME% and then retrieve the username with say RV1
= user.field[0]
If you need to use multiple environment variables just concatenate them into
the /SID and use the DP subfield[ ] function to extract them, for example
DP myapp.str /SID-/SID-%USERNAME%:%COMPUTERNAME%
using say the : sign as a delimiter which would not be used in a
COMPUTERNAME or USERNAME environment variable and which doesn't have special
significance in the commandline so the DP formula
subfield[user.field[0];":";1] returns the USERNAME
Alternatively if you want to support only validated users in DP you could
use the User ID Panel together with the /U-user:pwd switch to do something
similar to the above. As an example if you had the need you could ensure
that a specific user only used a specific machine you could use the
commandline
DP myapp.str /U-%USERNAME%:%COMPUTERNAME%
And the USERNAME could be retrieved with user.field[1]
Regards
Brian
_____
From: [email protected]
[mailto:[email protected]] On Behalf Of Chris Pedersen
Sent: Wednesday, 25 March 2009 2:32 AM
To: [email protected]
Subject: [Dataperf] Hey Lew, Tim and all the DP gurus
I'd like to be able to copy a value from the system environment,
specifically the machine name, into the userid field on startup, but more
generally it would be very useful if DP could recognize system variables %%
etc. (Is there any way to do this currently?)
Giving dataperfect the ability to modify external data values and/or files,
from the formula bar likewise.
It would also be useful if the transaction log included the machine name,
rather than just the login name. Login can be duplicated or hacked - but
system names (along with the time) give a pretty definitive idea of where an
entry came from.
When you define a panel, define whether the data will be stored in dp's
native format, or in an external format, such as CSV. This would REALLY
tremendously improve data exchange capability.
_____
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