Add and Subtract Time

This DataWeave example shows multiple addition and subtraction operations that deal with date and time types. Before you begin, note that DataWeave version 2 (%dw 2.0) is for Mule 4 apps. For a Mule 3 app, refer to DataWeave version 1 (%dw 1.0) examples, within the Mule 3.9 documentation set. For other Mule versions, you can use the Mule Runtime version selector in the table of contents.

The examples use:

  • as function to coerce a String to Period type

  • P<date>T<time> for the Period data type, which provides designators for years, months, days, hours, minutes, and seconds
    For example, |P2Y9M1D| refers to a period of two years, nine months, and one day, and |PT5H4M3S| indicates a time period of five hours, four minutes, and three seconds.

DataWeave Script:
%dw 2.0
output application/json
var numberOfDays = 3
  oneDayBefore: |2019-10-01T23:57:59Z| - |P1D|,
  threeDaysBefore: |2019-10-01T23:57:59Z| - ("P$(numberOfDays)D" as Period),
  a: |2019-10-01| - |P1Y|,
  b: |P1Y| - |2019-10-01|,
  c: |2019-10-01T23:57:59Z| - |P1Y|,
  d: |2019-10-01T23:57:59Z| + |P1Y|,
  e: |2019-10-01T23:57:59| - |P1Y|,
  f: |PT9M| - |23:59:56|,
  g: |23:59:56| + |PT9M|,
  h: |23:59:56-03:00| - |PT9M|,
  u: |23:59:56-03:00| - |22:59:56-03:00|,
  j: |23:59:56-03:00| - |22:59:56-00:00|,
  k: |2019-10-01T23:57:59| - |P2Y9M1D| - |PT57M59S| + |PT2H|,
  l: |23:59:56| - |22:59:56|,
  o: |2019-10-01| - |2018-09-23|,
  p: |2019-10-01T23:57:59Z| - |2018-10-01T23:57:59Z|,
  q: |2019-10-01T23:57:59| - |2018-10-01T23:57:59|
Output JSON:
  "oneDayBefore": "2019-09-30T23:57:59Z",
  "threeDaysBefore": "2019-09-28T23:57:59Z",
  "a": "2018-10-01",
  "b": "2018-10-01",
  "c": "2018-10-01T23:57:59Z",
  "d": "2020-10-01T23:57:59Z",
  "e": "2018-10-01T23:57:59",
  "f": "23:50:56",
  "g": "00:08:56",
  "h": "23:50:56-03:00",
  "u": "PT1H",
  "j": "PT4H",
  "k": "2017-01-01T01:00:00",
  "l": "PT1H",
  "o": "PT8952H",
  "p": "PT8760H",
  "q": "PT8760H"

Note that the behavior of o: |2019-10-01| - |2018-09-23| changed in Mule 4.3.0. DataWeave 2.3.0, which is supported by Mule 4.3.0, returns "o": "PT8952H". DataWeave 2.2.0, which is supported by Mule 4.2.0, returns "o": "P1Y8D". To restore the 2.2.0 behavior, you can set the -M-Dcom.mulesoft.dw.date_minus_back_compatibility=true. However, the setting does not affect the Preview window in Studio. For guidance with this setting in Studio and on-prem deployments, see System Properties. For CloudHub deployments, see cloudhub-manage-props.adoc[Manage Properties for Applications on CloudHub].

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