get_keys_struct_map

The function get_keys_struct_map retrieves the index values of all elements in MAP and stores them in an array. The index values are stored in the array in random order.

 get_keys_struct_map ( input_map;result_array)

This function returns NUMBER, which is the number of elements stored in the array.

This function has two parameters:

1. input_map is MAP of type FIELDSET. The MAP with the index values.
2. result_array is an array of type TEXT. The array with index values to be stored.

An example is provided below.

DATASTRUCTURE EL
  BEGIN
    TEXT Field
  END

DATASTRUCTURE DS
  BEGIN
    MAP EL Input_map
  END

DECLARE struct DEFINED_AS DS

ASSIGN struct.Input_map ["first"].Field := "This is the first value"
ASSIGN struct.Input_map ["second"].Field := "This is the second value"
ASSIGN struct.Input_map ["third"].Field := "This is the third value"
ASSIGN struct.Input_map ["fourth"].Field := "This is the fourth value"
ASSIGN struct.Input_map ["fifth"].Field := "This is the fifth value"

ARRAY TEXT result_array[1]  
NUMBER number_of_elements

ASSIGN number_of_elements := get_keys_struct_map (struct.Input_map;result_array) 

NUMBER counter  
FOR counter
	FROM 1  
	UPTO number_of_elements  
DO
#
The key @(result_array[counter]) contains @(struct.Input_map[result_array[counter]].Field) in the map. 
#
OD