Ok, here another problem encountered in studing SDK for wearable.

How to manage databases?

I mean: I studied the SDK help and tried to implement an IndexedDB. But, as for other APIs, tutorials and examples are absolutely not detailed.

I created a DB, a store, putted data in it, but don’t understand how to read data back! This is what the SDK example says:

var request = tizenStore.put(data);
request.onsuccess = function(e) 
{
   tizenDB.db.objectStoreId = request.result;
   var data = tizenStore.get(tizenDB.db.objectStoreId);
};

supposed tizenStore is the object store, and the (first) data variable something simple like:

var data = 
{
    "key": new Date().getTime(),
    "text": "Tizen-" + Math.random()
};

Yes: with the tizenStore.get I have access to my data but … this function has an output of the inserting process, as a parameter!

In other words: if I haven’t the request variable, this means I haven’t a tizenDB.db.objectStoreId, too! I tried something from the HTML5 help site, too, but it still doesn’t work:

var txn = db.transaction();

if (txn) 
{
    var store = txn.objectStore(objName);
    if (store) 
    {
        var cursorReq = store.openCursor();
        cursorReq.onsuccess = function (ev1) {
            var cur = ev1.result;
            if(cur)
                cursor_get_record(cur, txn, objName);
        }
        cursorReq.onerror = function (ev1) {
            output_trace("Failed to open cursor. Error: " + ev.message);
        }
    }
}

function cursor_get_record(cur, txn, ojName) 
{
    var moveReq = cur.move();
    moveReq.onsuccess = function (ev) {
        if (ev.result) {
            PrintRecord(ojName, cur.value);
            cursor_get_record(cur, txn, ojName);
        }
        else { //no more record
            txn.commit();
        }
    }
}

It seems that the store.openCursor() didn’t fire any event…

Any ideas? Thank you 🙂