Basically, I have an array of nids (node ids) stored in a
$_SESSION variable, which is updated according to user actions (it holds a history of visited node pages).
Now, I would like to create a view which displays a list of nodes, filtered by nids given in a
$_SESSION['my_nids'] == [1,5,6]
=> I want to display nodes 1,5,6 in the view.
Storing the nids in a db table is not an option due to performance reasons.
Can someone point me how to create such a non-database relationship views handler?