The pickFirst function picks the first object from various provided objects based on some condition.

Syntax

firstValuePicked = pickFirst(object1, object2,... -> booleanExpression)

Inputs

objects : comma separated 1 or more objects

booleanExpression : conditional expression that applies to current object. (eg: it > 100)

Output

firstValuePicked : the first object value that caused the boolean expression to evaluate to true.

Example flow

Schema triageSchema {
  coreProfile {
    number taxYear 
  }
}

Schema requestContext {
    number taxYear
}

value triageValue -> triageSchema {
  coreProfile {
       1980
     }
}

value requestContextValue -> requestContext { 2015 }

Schema result {
    number taxYear
}

Mapping finalMapping input triageValue, requestContextValue output result {
  result.taxYear = pickFirst(triageValue.coreProfile.taxYear, requestContextValue.taxYear -> it>2000)
}

Flow filterFlow {      
  Start finalMapping {
  }
}

Output for Example Flow

{ taxYear : 2015 }