Dataweave 2.0 date calculation

If you want to add number of days from a date and calculate a new date, you can use following code to do so. please note that in this case number of days are variable and calculated runtime.

<set-variable variableName="date" value="#[output application/java var days = vars.inputDays --- (now() - ('P$(days)D' as Period)) as Date {'format' : 'ddMMyyyy'}]" />

Following code can help you to calculate new date after subtracting number of months.

<set-variable variableName="date" value="#[output application/java var days = vars.inputDays --- (now() - ('P$(days)D' as Period)) as Date {'format' : 'ddMMyyyy'}]" />

Following code can help you to calculate new date after subtracting number of years.

<set-variable variableName="date" value="#[output application/java var years = vars.inputYears --- (now() - ('P$(years)Y' as Period)) as Date {'format' : 'ddMMyyyy'}]" />

Following code can decompose date in multiple parts

%dw 2.0
output application/json
var myDate = |2003-10-01T23:57:59.700-03:00|
---
{
  year: myDate.year,
  month: myDate.month,
  day: myDate.day,
  hour: myDate.hour,
  minutes: myDate.minutes,
  seconds: myDate.seconds,
  milliseconds: myDate.milliseconds,
  nanoseconds: myDate.nanoseconds,
  quarter: myDate.quarter,
  dayOfWeek: myDate.dayOfWeek,
  dayOfYear: myDate.dayOfYear,
  offsetSeconds: myDate.offsetSeconds
}

For more information please check mulesoft documentation