Public Class MapTransformer

Code Sample

• %REM
  The following code filters out values that are odd numbers
  %END REM
  Class AgeIncrementer as MapTransformer
      Function transform(kvPair as Pair) as Boolean
          Dim person as Person
          Set person = kvPair.value
          person.age++
          Return new Pair(kvPair, person)
      End Function
  End Class
  Dim map1 as New Map("PERSON", Nothing, False)
  Dim map2 as Map("PERSON", Nothing, False)
  Dim incrementer as New AgeIncrementer()
  'Populate map1
  Call map1.transform(incrementer, map2)

Methods Detail

• transform

  Public Function transform(kvPair As Pair) As Pair
  Function to transform a member of a value. If there is no return value, the element is skipped and nothing gets added to the new Map for this element. Thus this function can perform a filter and a transform simultaneously.
  idx	Argument	Data Type	Attributes	Comments
  1	kvPair	Pair		Pair containing key and value for the current element in the Map
  Code Sample
  %REM The following code filters out values that are odd numbers %END REM Class AgeIncrementer as MapTransformer Function transform(kvPair as Pair) as Boolean Dim person as Person Set person = kvPair.value person.age++ Return new Pair(kvPair, person) End Function End Class Dim map1 as New Map("PERSON", Nothing, False) Dim map2 as Map("PERSON", Nothing, False) Dim incrementer as New AgeIncrementer() 'Populate map1 Call map1.transform(incrementer, map2)

• New

  Public Sub New()