Model Nodes

Question

Dear all,
I have the following situation:
Currencies
TransactionRequest
   Currency
if i do:
wdContext.currentTransactionRequestElement().modelObject().setCurrency(someCurrency);
Should normally wdContext.currentCurrencyElement() reference to someCurrency? Because at the moment i'm showing the currency on the screen, but it's empty because its not referring to the currency that i've set on the modelobject of the parent...
What is the correct way to update the modelnodes in such a way that the object references stay intact ( correct currency via currentTransactionRequestElement.modelObject().getCurrency() and same currency if i want to access it via currentCurrencyElement())
At the moment in my program these are not the same....
// setting the currency to a currency selected in a dropdown 
public void supplyCurrency(IPrivateTransactionEntryController.ICurrencyNode node, IPrivateTransactionEntryController.ITransactionRequestElement parentElement)
    //@@begin supplyCurrency(IWDNode,IWDNodeElement)
    parentElement.modelObject().setCurrency(wdContext.currentCurrenciesElement().modelObject());
    //@@end
// retrieve currency now from child node Currency
wdContext.currentCurrencyElement().getDescription();
// this currency is not the same!!
So i have to bind the TransactionRequest object evertime to the parent node maybe to keep the references in the childnodes intact? In this way:
public void supplyCurrency(IPrivateTransactionEntryController.ICurrencyNode node, IPrivateTransactionEntryController.ITransactionRequestElement parentElement)
    //@@begin supplyCurrency(IWDNode,IWDNodeElement)
    parentElement.modelObject().setCurrency(wdContext.currentCurrenciesElement().modelObject());
    wdContext.nodeTransactionRequest.bind(parentElement.modelObject());
    //@@end
Message was edited by:
        Joren Crauwels

Answer 1

TransactionRequest has cardinality 0...n and child node Currency has cardinality 0..1
The selection is in both cases 0...1
The fact that it's not working has to do something with the supplyFunction vs supplyingRole.
I have created a supplyFunction for the Currency node so this mean the supplyingRole isnt used anymore. If i use supplyingRole then it;s working, but in that case i have to set my attributes myself on the context. I thought i  could use supllyFunction, because the currency should always be filled by the currency chosen from a dropdown....
With supplyingRole i have to worry myself about moving the chosed currency to the currency of TransactionRequest. If i can do it with the supplyFunction, the chosen value is moved automatically when needed... but so far, the references in my context are not correct