Constructor call problem

[MarkoSan]

Well, my answers:

1. QList<CMerchandizeOrder*> orders=shoppingCartModel()->orders();

   QList<CMerchandizeOrder*> orders=shoppingCartModel()->orders();

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   gets full ist of previous orders in model, so I can check if processed order is already in list of orders so I can then update quantity (+1) and subtotal of order (recalculate quantity*price=subtotal)
2. query.next() is executesd excalty ONCE
3. here is addEntry code:

   void CShoppingCartWidget::addEntry(structOrder& order)
   {
       // debug block
       qDebug() << "order.iMerchandizeID=" << order.iMerchandizeID;
       qDebug() << "order.iMerchandizeQuantity=" << order.iMerchandizeQuantity;
       qDebug() << "order.rMerchandizePrice=" << order.rMerchandizePrice;
       qDebug() << "order.rSubtotal=" << order.rSubtotal;
       qDebug() << "order.strDisplayString=" << order.strDisplayString;
       qDebug() << "order.strMerchandizeName=" << order.strMerchandizeName;
       // **** END of debug block
    
       QList<CMerchandizeOrder*> orders=shoppingCartModel()->orders();
       CMerchandizeOrder* tempOrder=new CMerchandizeOrder(order);
       Q_CHECK_PTR(tempOrder);
    
   /*
       tempOrder.iMerchandizeID=order.iMerchandizeID;
       tempOrder.iMerchandizeQuantity=order.iMerchandizeQuantity;
       tempOrder.rMerchandizePrice=order.rMerchandizePrice;
       tempOrder.rSubtotal=order.rSubtotal;
       tempOrder.strDisplayString=order.strDisplayString;
       tempOrder.strMerchandizeName=order.strMerchandizeName;
   */
    
       if (!orders.contains(tempOrder))
       {
           // new merchandize
           shoppingCartModel()->insertRows(0, 1, QModelIndex());
           QModelIndex index=shoppingCartModel()->index(0, 0, QModelIndex());
           shoppingCartModel()->setData(index,
                                        //tempOrder.orderValues().strDisplayString,
                                        tempOrder->orderValues().strDisplayString,
                                        Qt::EditRole);
       } 
       else
       {
           // merchandize exists, update quantity and subtotal
       }
   }

   void CShoppingCartWidget::addEntry(structOrder& order)
   {
       // debug block
       qDebug() << "order.iMerchandizeID=" << order.iMerchandizeID;
       qDebug() << "order.iMerchandizeQuantity=" << order.iMerchandizeQuantity;
       qDebug() << "order.rMerchandizePrice=" << order.rMerchandizePrice;
       qDebug() << "order.rSubtotal=" << order.rSubtotal;
       qDebug() << "order.strDisplayString=" << order.strDisplayString;
       qDebug() << "order.strMerchandizeName=" << order.strMerchandizeName;
       // **** END of debug block
       
       QList<CMerchandizeOrder*> orders=shoppingCartModel()->orders();
       CMerchandizeOrder* tempOrder=new CMerchandizeOrder(order);
       Q_CHECK_PTR(tempOrder);
       
   /*
       tempOrder.iMerchandizeID=order.iMerchandizeID;
       tempOrder.iMerchandizeQuantity=order.iMerchandizeQuantity;
       tempOrder.rMerchandizePrice=order.rMerchandizePrice;
       tempOrder.rSubtotal=order.rSubtotal;
       tempOrder.strDisplayString=order.strDisplayString;
       tempOrder.strMerchandizeName=order.strMerchandizeName;
   */
       
       if (!orders.contains(tempOrder))
       {
           // new merchandize
           shoppingCartModel()->insertRows(0, 1, QModelIndex());
           QModelIndex index=shoppingCartModel()->index(0, 0, QModelIndex());
           shoppingCartModel()->setData(index,
                                        //tempOrder.orderValues().strDisplayString,
                                        tempOrder->orderValues().strDisplayString,
                                        Qt::EditRole);
       } 
       else
       {
           // merchandize exists, update quantity and subtotal
       }
   }

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So, I was working on the base of qt 4.4.0 example and there the object is created in same fashion like in my module ...

[aamer4yu]

will have to go thru ur code all again []

one thing i can suggest for the time being,,,
if ur code is going in constructor, are u able to pur breakpoint and see the call stack.
It will give u an idea wher the object is being created

[MarkoSan]

will have to go thru ur code all again []

one thing i can suggest for the time being,,,
if ur code is going in constructor, are u able to pur breakpoint and see the call stack.
It will give u an idea wher the object is being created

I do not understand right now what do you mean, we already saw the object is being made in the wasy as it should THE FIRST TIME, but I cannot crack why are constructors (both) being called 4 times (as you saw from debug messages). I double checked and I confirm query.exec() is executed only ONCE.

[aamer4yu]

I mean,,, are u able to SET A BREAKPOINT in the constructor now ???

if yes,,, set the breakpoint... and see from the call stack from where the code was called

[MarkoSan]

The Eclipse IDE lets me set the breakpoint in constructor, but the breakpoint is never reached ...

[aamer4yu]

then how come you are able to get qDebug messages from the ctor

[MarkoSan]

then how come you are able to get qDebug messages from the ctor

I've setup breakpoint in the next line of code after constructor and then I copied messages from debug console. Messages stay in debug console after exiting from constructor ...

[MarkoSan]

If I setup breakpoint one line before CMerchandizeOrder constructor call and then try to step into CMerchandize constructor call I get something very weird, the dialog box shows which source file to choose to go into and there are several choices, which are all the same - qbytearray.h. I've enclosed a screenshot for better understanding. Is this maybe somekind of qt 4.4.0 bug?!

[MarkoSan]

Gurus like jacek, jpn, wysotta and other pleeeeeease help me!!!!

[MarkoSan]

I've changed the code in addEntry() to:

void CShoppingCartWidget::addEntry(structOrder& order)
{
    // debug block
    qDebug() << "order.iMerchandizeID=" << order.iMerchandizeID;
    qDebug() << "order.iMerchandizeQuantity=" << order.iMerchandizeQuantity;
    qDebug() << "order.rMerchandizePrice=" << order.rMerchandizePrice;
    qDebug() << "order.rSubtotal=" << order.rSubtotal;
    qDebug() << "order.strDisplayString=" << order.strDisplayString;
    qDebug() << "order.strMerchandizeName=" << order.strMerchandizeName;
    // **** END of debug block
 
    QList<CMerchandizeOrder*> orders=shoppingCartModel()->orders();
    //CMerchandizeOrder* tempOrder=new CMerchandizeOrder(order);
    //Q_CHECK_PTR(tempOrder);
    CMerchandizeOrder tempOrder(order);
 
/*
    tempOrder.iMerchandizeID=order.iMerchandizeID;
    tempOrder.iMerchandizeQuantity=order.iMerchandizeQuantity;
    tempOrder.rMerchandizePrice=order.rMerchandizePrice;
    tempOrder.rSubtotal=order.rSubtotal;
    tempOrder.strDisplayString=order.strDisplayString;
    tempOrder.strMerchandizeName=order.strMerchandizeName;
*/
 
    if (!orders.contains(&tempOrder))
    {
        // new merchandize
        shoppingCartModel()->insertRows(0, 1, QModelIndex());
        QModelIndex index=shoppingCartModel()->index(0, 0, QModelIndex());
        shoppingCartModel()->setData(index,
                                     tempOrder.orderValues().strDisplayString,
                                     //tempOrder->orderValues().strDisplayString,
                                     Qt::EditRole);
    } 
    else
    {
        // merchandize exists, update quantity and subtotal
    }
}

void CShoppingCartWidget::addEntry(structOrder& order)
{
    // debug block
    qDebug() << "order.iMerchandizeID=" << order.iMerchandizeID;
    qDebug() << "order.iMerchandizeQuantity=" << order.iMerchandizeQuantity;
    qDebug() << "order.rMerchandizePrice=" << order.rMerchandizePrice;
    qDebug() << "order.rSubtotal=" << order.rSubtotal;
    qDebug() << "order.strDisplayString=" << order.strDisplayString;
    qDebug() << "order.strMerchandizeName=" << order.strMerchandizeName;
    // **** END of debug block
    
    QList<CMerchandizeOrder*> orders=shoppingCartModel()->orders();
    //CMerchandizeOrder* tempOrder=new CMerchandizeOrder(order);
    //Q_CHECK_PTR(tempOrder);
    CMerchandizeOrder tempOrder(order);
    
/*
    tempOrder.iMerchandizeID=order.iMerchandizeID;
    tempOrder.iMerchandizeQuantity=order.iMerchandizeQuantity;
    tempOrder.rMerchandizePrice=order.rMerchandizePrice;
    tempOrder.rSubtotal=order.rSubtotal;
    tempOrder.strDisplayString=order.strDisplayString;
    tempOrder.strMerchandizeName=order.strMerchandizeName;
*/
    
    if (!orders.contains(&tempOrder))
    {
        // new merchandize
        shoppingCartModel()->insertRows(0, 1, QModelIndex());
        QModelIndex index=shoppingCartModel()->index(0, 0, QModelIndex());
        shoppingCartModel()->setData(index,
                                     tempOrder.orderValues().strDisplayString,
                                     //tempOrder->orderValues().strDisplayString,
                                     Qt::EditRole);
    } 
    else
    {
        // merchandize exists, update quantity and subtotal
    }
}

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and I get same result.

[MarkoSan]

The problem has been solved, I've checked all sources related to table widget and I found some merchandize order field reset code from other developer that I did not have been aware god damn!!!! Stupid, stupid, stupid! Anyway, thanks all repliers for your time. But gdb still has problems with setting breakpoints in constructors ...

[aamer4yu]

relief for me too,,,, i was also begining to bang my head
i told ya,, u must be overriding somewher