(MFC) Iterate JSON where Member Names are Data Values

Demonstrates how to parse JSON where member names are not keywords, but instead are data values.

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

See Also: Using MFC CString in Chilkat

#include <CkJsonObject.h>

void ChilkatSample(void)
    {
    CkString strOut;

    CkJsonObject json;

    bool success = json.LoadFile("qa_data/json/valuesAsNames.json");

    // Imagine we have JSON such as the following:

    // {
    //   "1680": {
    //     "entity_id": "1680",
    //     "type_id": "simple",
    //     "sku": "123"
    //   },
    //   "1701": {
    //     "entity_id": "1701",
    //     "type_id": "simple",
    //     "sku": "456"
    //   }
    // }
    // 

    // This presents a parsing problem because the member names, such as "1680"
    // are not keywords.  Instead they are data values.  We don't know what they
    // may be in advance.  

    // To solve, we iterate over the members, get the name of each, ...
    int numMembers = json.get_Size();
    int i;
    for (i = 0; i <= numMembers - 1; i++) {

        const char *name = json.nameAt(i);

        strOut.append(name);
        strOut.append(":");
        strOut.append("\r\n");
        CkJsonObject *jRecord = json.ObjectAt(i);

        strOut.append("entity_id: ");
        strOut.append(jRecord->stringOf("entity_id"));
        strOut.append("\r\n");
        strOut.append("type_id: ");
        strOut.append(jRecord->stringOf("type_id"));
        strOut.append("\r\n");
        strOut.append("sku: ");
        strOut.append(jRecord->stringOf("sku"));
        strOut.append("\r\n");

        delete jRecord;

    }



    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }