Null check for a!map in a process

I would implement a null check for a map like this:

or(
  length(a!keys(ri!map)) = 0,
  all(a!isNullOrEmpty(_), index(ri!map, a!keys(ri!map), null))
)

At that point, one should just have a designated helper rule designed to brute-force check for the emptiness of an array (which i always have had, anyway).  It's disappointing that a!isNullOrEmpty() seemingly fails for certain corner cases, though I'd've thought it would work for an empty a!map() array (i haven't checked TBH).

At that point, one should just have a designated helper rule designed to brute-force check for the emptiness of an array (which i always have had, anyway).  It's disappointing that a!isNullOrEmpty() seemingly fails for certain corner cases, though I'd've thought it would work for an empty a!map() array (i haven't checked TBH).

True. Our null checker expression turned into black magic ;-)

if(
  a!isNullOrEmpty(ri!value),
  true,
  a!localVariables(
    local!typeNum: a!refreshVariable(
      value: runtimetypeof(ri!value),
      refreshAlways: true
    ),
    
    /* Strings */
    if(
      local!typeNum = 'type!{http://www.appian.com/ae/types/2009}Text',
      /* Ignore white space */
      len(trim(ri!value)) = 0,
      
    /* List of Variant */
    if(
      local!typeNum = 'type!{http://www.appian.com/ae/types/2009}Variant?list',
      all(a!isNullOrEmpty(_), a!flatten(ri!value)),
      
    /* Lists */
    if(
      /* Try to take first item in list and cast it to a list of itself */
      /* then compare its datatype to the incoming data type */
      local!typeNum = runtimetypeof(cast(runtimetypeof({index(ri!value, 1, null)}), ri!value)),
      
      /* Flatten takes care of lists in lists in lists in ... */
      /* List has zero non-null items, length() already ignores null values*/
      length(a!flatten(ri!value)) = 0,

    /* Map */
    if(
      local!typeNum = 'type!{http://www.appian.com/ae/types/2009}Map',
      /* Has no keys at all or all values are null */
      or(
        length(a!keys(ri!value)) = 0,
        all(a!isNullOrEmpty(_), index(ri!value, a!keys(ri!value), null))
      ),
      
    /* DataSubsets or Maps returned by queryRecordType */
    if(
      or(
        local!typeNum = 'type!{http://www.appian.com/ae/types/2009}DataSubset',
        and(
          local!typeNum = 'type!{http://www.appian.com/ae/types/2009}Map',
          contains(a!keys(ri!value), "data"),
        )
      ),
      a!isNullOrEmpty(ri!value.data),

      /* No idea what this could be so it is considered to not be null */
      false
    )))))
  )
)

Appian, please don't make us have to write things like this ^.