[Qt-interest] Extend property system to include relationships?

[Chris Meyer]

Could the Qt property system be extended to support relationships in
addition to properties?

For example, the following macro could be added to the Qt property
system to support to-many relationships:

QT_RELATIONSHIP(relationship name, class name,
	READ getFunction,
	COUNT countFunction,
	INSERT insertFunction,
	REMOVE removeFunction,
	etc.)

There might be a similar macro for a to-one relationship.

Having such relationship information would allow QAbstractItemModels
to be automatically available to represent items in a relationship,
allow automatic archiving/unarchiving, and generally facilitate a
bunch of other generic algorithms that could function on the data
model. It would also be helpful to reduce C++ code in complex QML data
models.

Has thought been given to this type of extension to the property
system for a future version of Qt? (And is this the right forum to
discuss such an extension?)

class Team : public QObject
{
  Q_OBJECT
public:
  Q_PROPERTY(teamName);
  Q_RELATIONSHIP(players, Player);
};

class Player : public QObject
{
  Q_OBJECT
public:
  Q_PROPERTY(fullName);
};