What is the equivalent of QModelndex::internalPointer() in QTJambi?

[paulusel]

I noticed the method 'internalpointer()' is missing entirely from io.qt.core.QModelIndex class. Although the similar method internalId() is defined, its return type is mapped to 'long' because its return type in C++ was 'quint64'. The doc is explicit about that too.

But my question is, how to achieve similar functions of 'internalId()' and 'internalPointer()' in QTJambi? Is there any way to convert the result of the defined 'internalId()' into Object? Or should it be returning Object instead?

[paulusel]

Never mind. Found out that the internalId() does the job perfectly. My confusion was the result of my poor understanding.

These functions were NOT meant to provide values themselves from somewhere somehow. Rather they they return the id value you provided for createIndex() during the creation of QModeleIndex. That value helps you to identify the node in your view in your INTERNAL data structures, which you must create yourself. My mistake lies with thinking the value is some magical pointer to node I'm looking for.

In my case, I ended up creating a hashMap mapping hashCode() to object references. I supplied the hashCode() to createIndex(). When object corresponding to internalId() is required, I just lookup in hashMap.

Hope this helps anyone who might have confusion.

[omix]

Excellent!
internalPointer() is just a void* cast of internalId() and in some cases Qt creates indexes with true object pointers as their ID, for instance QStandardItem*. However, as it is never possible to resolve the native pointer's actual type this method is not part of the API in QtJambi.
If you know for sure what type this pointer is you could use QNativePointer to cast it to Java type. If this is relevant für you please post another Q&A and I'll show.