C

Create more Complex JSON Document

See more JSON Examples

Sample code to create the following JSON document:

    {  
        "Title": "The Cuckoo's Calling",  
        "Author": "Robert Galbraith",  
        "Genre": "classic crime novel",  
        "Detail": {  
            "Publisher": "Little Brown",  
            "Publication_Year": 2013,  
            "ISBN-13": 9781408704004,  
            "Language": "English",  
            "Pages": 494  
        },  
        "Price": [  
            {  
                "type": "Hardcover",  
                "price": 16.65  
            },  
            {  
                "type": "Kindle Edition",  
                "price": 7.00  
            }  
        ]  
    }  

C

#include <C_CkJsonObject.h>
#include <C_CkJsonArray.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkJsonObject json;
    int index;
    HCkJsonObject detail;
    HCkJsonArray aPrice;
    HCkJsonObject priceObj;

    success = FALSE;

    json = CkJsonObject_Create();

    // The only reason for failure in the following lines of code would be an out-of-memory condition..

    // An index value of -1 is used to append at the end.
    index = -1;

    success = CkJsonObject_AddStringAt(json,-1,"Title","The Cuckoo's Calling");
    success = CkJsonObject_AddStringAt(json,-1,"Author","Robert Galbraith");
    success = CkJsonObject_AddStringAt(json,-1,"Genre","classic crime novel");

    // Let's create the Detail JSON object:
    detail = CkJsonObject_Create();
    CkJsonObject_AppendObject2(json,"Detail",detail);

    success = CkJsonObject_AddStringAt(detail,-1,"Publisher","Little Brown");
    success = CkJsonObject_AddIntAt(detail,-1,"Publication_Year",2013);
    success = CkJsonObject_AddNumberAt(detail,-1,"ISBN-13","9781408704004");
    success = CkJsonObject_AddStringAt(detail,-1,"Language","English");
    success = CkJsonObject_AddIntAt(detail,-1,"Pages",494);

    // Add the array for Price
    aPrice = CkJsonArray_Create();
    CkJsonObject_AppendArray2(json,"Price",aPrice);

    // Entry in aPrice will be a JSON object.

    // Append a new/empty ojbect to the end of the aPrice array.
    priceObj = CkJsonObject_Create();

    CkJsonArray_AddObjectAt2(aPrice,-1,priceObj);
    success = CkJsonObject_AddStringAt(priceObj,-1,"type","Hardcover");
    success = CkJsonObject_AddNumberAt(priceObj,-1,"price","16.65");

    CkJsonArray_AddObjectAt2(aPrice,-1,priceObj);
    success = CkJsonObject_AddStringAt(priceObj,-1,"type","Kindle Edition");
    success = CkJsonObject_AddNumberAt(priceObj,-1,"price","7.00");

    CkJsonObject_putEmitCompact(json,FALSE);
    printf("%s\n",CkJsonObject_emit(json));


    CkJsonObject_Dispose(json);
    CkJsonObject_Dispose(detail);
    CkJsonArray_Dispose(aPrice);
    CkJsonObject_Dispose(priceObj);

    }