RE: Recursively get db entries

fredaf — Fri, 22 Jul 2022 13:57:17 GMT

Hi Luca,

I wouldn't recommend using this type of recursion in Appian as it's not a best practice. But, I tried it using a recursive call to the main expression rule to backtrack through the list mainly using the displayvalue function. Here's the code snippet and it returns a list of strings that u can edit as per your requirement, for this case i passed the ri value as 4 -

"FID value is 3 FID value is 2 FID value is 1 Depth reached "(Text)

a!localVariables(
  local!cdtset: {
    'type!{urn:com:appian:types}test_cdt_1'('ID': 1, 'fID': null),
    'type!{urn:com:appian:types}test_cdt_1'('ID': 2, 'fID': 1),
    'type!{urn:com:appian:types}test_cdt_1'('ID': 3, 'fID': 2),
    'type!{urn:com:appian:types}test_cdt_1'('ID': 4, 'fID': 3)
  },
  local!newvalue: displayvalue(
    ri!value,
    local!cdtset.'ID',
    local!cdtset.'fID',
    0
  ),
  if(
    or(
      a!isNullOrEmpty(local!newvalue),
      local!newvalue = 0
    ),
    { "Depth reached " & local!newvalue },
    {
      "FID value is " & local!newvalue & char(10) & rule!test_recursiveEr(local!newvalue)
    }
  )
)