JsonArraySetArrayElement Function

Action

Replaces the value of a specified element from a JSON array. If the array element does not exist in the JSON array, a new element with the specified value will be appended to the array. If the array element does not contain a JSON array value, nothing happens.

Include file

Json.bdh

Syntax

JsonArraySetArrayElement( in handle : number,
                          in index  : number,
                          in value  : number ): boolean;

Parameter	Description
handle	Valid handle to a JSON array
index	The index position in the JSON array. Lower bound is zero (0).
value	A handle to the JSON array, which should be the new value of the element

Return value

true if value successfully written to element
false otherwise

Example

transaction TMain
var
  jsonText            : string;
  jsonArray, newValue : number;
begin
  WebParseDataBound(jsonText);
  WebPageUrl("http://mycompany.com/api/jsondata");
  jsonArray := JsonParse(jsonText);
  
  newValue := JsonParse("[0,1,2,3,4]");
  JsonArraySetArrayElement(jsonArray, 1, newValue);
  
  /* add new value
   * index of the new value := size
   * size := size + 1 */
  JsonArraySetArrayElement(jsonArray, 999999, newValue);

  JsonFree(newValue);
  JsonFree(jsonArray);
end TMain;