UML inner/nested class associations

If you have an inner class that creates stateless objects then you can do
this in a number of ways.

1/ A nested class, Objects of the class can be composed attributes of outer
object.
2/ A nested class, Objects of the class are just instantiated in method
scope.
3/ An inner class declared in a method. Objects are just instantiated in
method scope.

In UML only 1/ can be shown as a composisition (?) association although the
designed effect is the same.

How can I legally show relationships in the other cases? At the moment I'm
using notes & note anchors. I was using the dotted instantiates/dependency
relationship, but I now realise that is misuse.
Can you show relationships for method local objects at all?

I expect the answer might be, 'this is what sequence diagrams are for'.

Also when naming associations, does the naming direction go in the direction
of a one way association by default? I believe you can have it in either
direction, but there is no visual way to indicate direction? How can you
read direction in 2 way associations? Also my names seem a bit over-long eg
'connects to database via'.

example here:
http://img126.imageshack.us/img126/5078/dao4bv.gif

Nested class is RowHandler, a locally used object is DAOException.

TIA,
Mike W



.

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