DMN12 — DMN built-in functions are missing to ensure business friendliness

A lot of use cases of decision logic involve date and time manipulations (e.g. some decision based on the age of an invoice or a person). The current list of DMN functions is too limited to express the logic in a business friendly way.

For example:
floor((today()-Past Date).days/365.25) to compute the age in years of a person, an invoice, a client account etc. (where 'Past Date' is a date)

or worst

floor(((date and time(Past Date,time("00:00")) + duration("P" + string(floor((today()-Past Date).days/365.25)) +"Y") +duration("P1Y")) - now()) /duration("PT24H")) to compute the number of day until the yearly anniversary of person, an invoice, a client account etc.

A list of additional required built-in functions will be submitted as proposal to this issue

Add more built-in functions

Add more built-in functions