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(Delphi ActiveX) Swap JSON ObjectsDemonstrates how to swap two JSON objects within a JSON document. Note: This example requires Chilkat v11.0.0 or greater.
uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB; ... procedure TForm1.Button1Click(Sender: TObject); var success: Integer; json: TChilkatJsonObject; index1: Integer; index2: Integer; jsonSara: TChilkatJsonObject; begin success := 0; json := TChilkatJsonObject.Create(Self); json.EmitCompact := 0; // Load the following JSON: // { // "petter": { // "DOB": "26/02/1986", // "gender": "male", // "country": "US" // }, // "Sara": { // "DOB": "13/05/1982", // "gender": "female", // "country": "FR" // }, // "Jon": { // "DOB": "19/03/1984", // "gender": "male", // "country": "UK" // } // } success := json.LoadFile('qa_data/json/people.json'); if (success = 0) then begin Memo1.Lines.Add(json.LastErrorText); Exit; end; // Swap the positions of Jon and Sara. index1 := json.IndexOf('Jon'); index2 := json.IndexOf('Sara'); json.Swap(index1,index2); // We have this now: Memo1.Lines.Add(json.Emit()); // { // "petter": { // "DOB": "26/02/1986", // "gender": "male", // "country": "US" // }, // "Jon": { // "DOB": "19/03/1984", // "gender": "male", // "country": "UK" // }, // "Sara": { // "DOB": "13/05/1982", // "gender": "female", // "country": "FR" // } // } // To swap an inner member: jsonSara := TChilkatJsonObject.Create(Self); json.ObjectOf2('Sara',jsonSara.ControlInterface); index1 := jsonSara.IndexOf('DOB'); index2 := jsonSara.IndexOf('country'); jsonSara.Swap(index1,index2); // We now have this: Memo1.Lines.Add(json.Emit()); // { // "petter": { // "DOB": "26/02/1986", // "gender": "male", // "country": "US" // }, // "Jon": { // "DOB": "19/03/1984", // "gender": "male", // "country": "UK" // }, // "Sara": { // "country": "FR", // "gender": "female", // "DOB": "13/05/1982" // } // } end; |
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