Generate Case Number

RE: Generate Case Number

Robert Shankin — Thu, 10 Oct 2019 19:47:45 GMT

Not bad, Chris. I am corrected.

So there's a small expression needed to obtain the value of the constant in order to properly reset it in this way.

I might do this next time.

Thanks!

RE: Generate Case Number

Chris — Thu, 10 Oct 2019 18:38:51 GMT

To add, for retaining scalability when resetting the constant I would recommend utilizing the Increment Constant node with a negative value (the negative value of the constant) to reset to 0, then perform the increment to get the first value (1) for the day, and no versions will be logged, vs using the Update Constant node to reset which would log a version each day.

RE: Generate Case Number

Chris — Thu, 10 Oct 2019 18:28:34 GMT

Hi Robert, to note in my experience Appian does not save a version to memory of a numeric constant that is incremented using the Increment Constant node so this is scalable. Constant versions are saved during manual updates, or when a constant is modified using the Update Constant node.

RE: Generate Case Number

Robert Shankin — Thu, 10 Oct 2019 17:26:52 GMT

Remember Appian saves previous versions of constants when they are changed. This uses memory.
The constant approach suggested above is easy to build, but it may not scale well over time.

I'd use a variant of what Stewart Burchell recommends.

RE: Generate Case Number

Chris — Thu, 10 Oct 2019 17:16:27 GMT

Another option here would be to utilize a constant for the daily ID value, create a sub process that gets this information for each record. Assuming you have a 'CreatedOn' timestamp for each record, the sub process can query the DB to see if any requests have been created in the same day. If not, reset the constant to 1 and return that value. If so, increment the constant and return the incremented value.

RE: Generate Case Number

Stewart Burchell — Tue, 08 Oct 2019 11:34:17 GMT

Hi Dawid

I've done this before in the following way:

create a database table that holds the current value if 'id'. Initially set the value to 1
alongside this value have another column that holds a date value
use Appian (or a Stored Proc) to retrieve the current value of 'id'. If the date in the DB is the same as today's date then add 1 to the value of 'id' and write that back to the DB along with the current date
if the value of the date in the column is different to today's date simply re-set 'id' to 1 and write it back along with the current date

(Use of a Stored Proc is more robust as it allows you to lock the current row and thus ensure concurrent requests to it do not result in the same value being retrieved/written)

RE: Generate Case Number

Robert Shankin — Fri, 04 Oct 2019 15:58:41 GMT

Dawid -

Can there only be a maximum of 100 cases per day?

RE: Generate Case Number

ChristineLHutchison — Fri, 04 Oct 2019 15:49:51 GMT

Is this “number” stored in the DB? If so, another approach is to make a view to return a 1 or 0 or next number with the use of CASE statement to check if none in for today.

Hope that gives you another approach

RE: Generate Case Number

Siddharth — Fri, 04 Oct 2019 14:04:42 GMT

Hi Dawid - You can have a constant of type number(integer) that would function as the "id" of the case in your database. This constant would be set to 1 initially and would be incremented by 1 after a case is created. You would have to update this constant to 1 via a nightly process so that the "id" is reset every day.