Refer to the exhibits. What DataWeave expression transforms the conductorIds array to the XML output? A. 1. 1. trains: 2. 2. conductorIds map ((engId, index) -> 4. 4. engineerId: engId 5. 5. } 6. 6…

Question

Exhibit

Options

• A
  1. trains:
  2. conductorIds map ((engId, index) ->
  3. train: {
  4. engineerId: engId
  5. }
  6. )
• B
  1. { trains:
  3. conductorIds map ((engId, index) ->
  4. train: {
  5. engineerId: engId
  6. }
  7. )
  8. }
• C
  1. trains:
  2. {(
  3. conductorIds map ((engId, index) ->
  4. train: {
  5. engineerId: engId
  6. }
  7. )
  8. )}
• D
  1. {( trains:
  3. conductorIds map ((engId, index) ->
  4. train: {
  5. engineerId: engId
  6. }
  7. )
  8. )}

• A
  23% (6)
• B
  8% (2)
• C
  58% (15)
• D
  12% (3)

Explanation

Points to remember: * XML must have a root element. * XML only allows one root element * To avoid multiple root issues, you must create a root element for the XML output, whenever we transform output * When mapping array elements (JSON or JAVA) to XML, wrap the map operations in {(..)} -{ } are defining the object ( ) are transforming each element in the array as a key/value pair * The transformation to XML would fail if the above mentioned considerations were not taken into * Thus the transformation script declares a root element as trains and wraps the data in "{( )}". Whenever you see such type of question, always look out for root element followed by {( )} wrapping I call this a "Wrap The Map" scenario. Hope it would help you remember !

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