Simple Components: adding an existing object to a graph

[Mart van de Wege <mvdwege@gmail.com>]

This one's for Dimitry, probably: I want to create a genealogy of
persons using his generic directed weighted graph package.

I've seen how I can do that like this (example code, assuming an
instantiated Graph):

type Person is record
     Name: Unbounded_String,
     Age: Natural
end record;

and then adding it to the graph with:

Ancestor : Node := new Person;

However, assume I already have plenty of code to create and manipulate
Person objects, how do I assign an *existing* object of type Person to a
graph? Trying to do it the obvious way by assigning an access to Person
to a Node object gets me an error message that Node is not a general
access type.

Regards,

Mart van de Wege
-- 
"We will need a longer wall when the revolution comes."
--- AJS, quoting an uncertain source.