Hi, I want to use Apply function over generateuuid, so I am taking an

rishub356 over 8 years ago

Hi,

I want to use Apply function over generateuuid, so I am taking an expression like given below:
=apply(fn!generateuuid, {ri!test})
here ri!test is a text array. But when I am running this rule, I am getting the below error:

Expression evaluation error at function 'apply': com.appiancorp.suiteapi.common.exceptions.AppianException: Unexpected number of parameters. (APNX-1-4158-001)

Can anyone guide us how can I do it. I don't want to use MNI.

Thanks
Rishu

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0 Eliot Gerson
Appian Employee
over 8 years ago

There are many ways to generate UUIDs in Appian without custom functions. And a database call can end up being costly and unnecessary. Personally, I'm partial to the below expression when I want to generate a UUID. Though, again, it is worth considering whether a UUID is actually needed. UUIDs tend to be overused in general (not specific to Appian) because they are so easy to generate, but in many cases, it's overkill and you end up using a very long string where a much shorter one would have sufficed.

left(
concat(
dec2hex(split(random(), ".")[2]),
dec2hex(split(random(), ".")[2]),
dec2hex(split(random(), ".")[2]),
dec2hex(split(random(), ".")[2]),
dec2hex(split(random(), ".")[2]),
dec2hex(split(random(), ".")[2]),
dec2hex(split(random(), ".")[2])),
32)
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0 Eliot Gerson
Appian Employee
over 8 years ago

There are many ways to generate UUIDs in Appian without custom functions. And a database call can end up being costly and unnecessary. Personally, I'm partial to the below expression when I want to generate a UUID. Though, again, it is worth considering whether a UUID is actually needed. UUIDs tend to be overused in general (not specific to Appian) because they are so easy to generate, but in many cases, it's overkill and you end up using a very long string where a much shorter one would have sufficed.

left(
concat(
dec2hex(split(random(), ".")[2]),
dec2hex(split(random(), ".")[2]),
dec2hex(split(random(), ".")[2]),
dec2hex(split(random(), ".")[2]),
dec2hex(split(random(), ".")[2]),
dec2hex(split(random(), ".")[2]),
dec2hex(split(random(), ".")[2])),
32)
Cancel
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