(MFC) Insert JSON Array into another JSON Object

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Demonstrates how to insert a JSON array into a JSON object.

Chilkat C/C++ Library Downloads MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkJsonObject.h>
#include <CkJsonArray.h>

void ChilkatSample(void)
    {
    CkString strOut;

    // Imagine we have two separate JSON objects.
    CkJsonObject jsonA;
    jsonA.UpdateString("ciphertext","encryptedData");
    jsonA.UpdateInt("status",200);
    jsonA.UpdateString("error","errorMsg");

    jsonA.put_EmitCompact(false);
    strOut.append(jsonA.emit());
    strOut.append("\r\n");

    // jsonA contains:

    // {
    //   "ciphertext": "encryptedData",
    //   "status": 200,
    //   "error": "errorMsg"
    // }

    CkJsonObject jsonB;
    jsonB.UpdateString("users[0].role","Surgeon");
    jsonB.UpdateNewArray("users[0].sub_roles");
    jsonB.UpdateBool("users[0].viewable_for_sharing",true);
    jsonB.UpdateInt("users[0].eula_create_date",123);
    jsonB.UpdateString("users[1].role","Support");
    jsonB.UpdateString("users[1].sub_roles[0]","Tech");
    jsonB.UpdateString("users[1].sub_roles[1]","Service");
    jsonB.UpdateBool("users[1].viewable_for_sharing",true);
    jsonB.UpdateInt("users[1].eula_create_date",123);

    jsonB.put_EmitCompact(false);
    strOut.append(jsonB.emit());
    strOut.append("\r\n");

    // jsonB contains:

    // {
    //   "users": [
    //     {
    //       "role": "Surgeon",
    //       "sub_roles": [],
    //       "viewable_for_sharing": true,
    //       "eula_create_date": 1649108922482
    //     },
    //     {
    //       "role": "Support",
    //       "sub_roles": [
    //         "Tech",
    //         "Service"
    //       ],
    //       "viewable_for_sharing": true,
    //       "eula_create_date": 1649108951523
    //     }
    //   ]
    // }

    // Let's say we want to insert jsonB into jsonA to get this:

    // {
    //   "ciphertext": "encryptedData",
    //   "status": 200,
    //   "error": "errorMsg",
    //   "users": [
    //     {
    //       "role": "Surgeon",
    //       "sub_roles": [],
    //       "viewable_for_sharing": true,
    //       "eula_create_date": 1649108922482
    //     },
    //     {
    //       "role": "Support",
    //       "sub_roles": [
    //         "Tech",
    //         "Service"
    //       ],
    //       "viewable_for_sharing": true,
    //       "eula_create_date": 1649108951523
    //     }
    //   ]
    // }

    // First add an empty array at the desired location (-1 means append to end).
    jsonA.AddArrayAt(-1,"users");

    // The destination is the empty "users" array, the source is the populated "users" array in jsonB.
    CkJsonArray *jsonUsersDest = jsonA.ArrayOf("users");
    CkJsonArray *jsonUsersSrc = jsonB.ArrayOf("users");
    // Copy the array items from source to dest
    jsonUsersDest->AppendArrayItems(*jsonUsersSrc);
    delete jsonUsersDest;
    delete jsonUsersSrc;

    strOut.append(jsonA.emit());
    strOut.append("\r\n");

    // The end result is this:

    // {
    //   "ciphertext": "encryptedData",
    //   "status": 200,
    //   "error": "errorMsg",
    //   "users": [
    //     {
    //       "role": "Surgeon",
    //       "sub_roles": [
    //       ],
    //       "viewable_for_sharing": true,
    //       "eula_create_date": 123
    //     },
    //     {
    //       "role": "Support",
    //       "sub_roles": [
    //         "Tech",
    //         "Service"
    //       ],
    //       "viewable_for_sharing": true,
    //       "eula_create_date": 123
    //     }
    //   ]
    // }


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }