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Posted by Nashat on September 18, 2006, 4:34 am
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I suggest that POS doesn't go offline if it can't write into registry,
displaying a message box instead telling that it couldn't access the registry.
What happens if the POS machine goes offline without having access to edit
the registry?
This typically happen when the user is a normal user (not a power user)
1. The POS application will try to connect to the server main database
within the pre-configured ‘Connect Timeout’ in the RMS Administrator
(Typically 15 seconds)
2. The application will then try to connect to the pre-defined offline
database (which is usually stored locally) within the pre-defined ‘Connect
Timeout’ for the offline database in the RMS Administrator.
3. The POS application will supposedly succeed in connecting to the offline
database (if it’s properly configured).
4. The POS application will display a message telling that it’s working in
offline mode and will TRY to change the “TerminalOffline” flag in
HKEY_LOCAL_MACHINESOFTWAREMicrosoftRetail Management SystemQuicksell
CommercePOS User from ‘False’ to ‘True’ but unfortunately will fail in
changing this registry value.
5. Instead of informing the user about failure in changing the registry
value, the POS application will work offline without changing the registry
value that’s a must to know its status and therefore resulting in unexpected
behavior afterwards.
6. The POS application will record its transactions locally in the offline
database while working offline although the registry value “TerminalOffline”
is still ‘False’.
7. When the main database is back online, POS application is restarted, and
will be able to connect to it since the network and the server are up
8. The POS application will check the “TerminalOffline” flag too to know if
there are some transactions to upload or not.
9. The POS application will find the “TerminalOffline” flag set to
‘False’
(this shouldn’t happen) and therefore will do nothing except working normally
in online mode as if it was never in offline mode (the POS application
doesn’t know in this case that it was in offline mode).
10. The offline transactions will not be uploaded to the main database and
there will be no blind closed batches.
i know that the registry access could be given thru group policy or direct
registry permissions,but my suggestion is just to inform the user that
something went wrong so that they can handle it in the begining.
Nashat
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