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  1. OMG Issue

DMN13 — Improve description of built-in function string()

  • Key: DMN13-27
  • Status: open  
  • Source: ACTICO ( Daniel Thanner)
  • Summary:

    The expected output of the built-in function string() should be defined for each type. Otherwise it is unclear what the result for a value, for example of type time, is. Is it the string literal or the full expression with built-in function time()?

    // which FEEL expression is valid?
    string(time("11:00:00")) = "11:00:00"
    string(time("11:00:00")) = "time("11:00:00")"
    

    Recommendation: Introduce a new table that lists example outputs for all types:

    • null -> null
    • boolean -> "true" or "false"
    • string -> "This is a string"
    • number -> "-1.234"
    • date -> "2017-10-11"
    • time -> "11:00:00.123" or "11:00:00.123+02:00" or "11:00:00.123@Europe/Paris"
    • date and time -> "2017-10-11T11:00:00.123" or "2017-10-11T11:00:00.123+02:00" or "2017-10-11T11:00:00.123@Europe/Paris"
    • days and time duration -> "P2DT3H4M5.123S"
    • years and months duration -> "P2Y3M"
    • list -> "[1,2,3]"
    • context -> "{a: true, b: false}"
    • range -> "[1..100]"
    • unary test -> "> 10"
    • function -> null
  • Reported: DMN 1.1 — Wed, 11 Oct 2017 09:02 GMT
  • Updated: Thu, 13 Jun 2019 00:12 GMT