Map from id->list

[Daniel Pitts]

I have a table that looks something like this:

                external_maps
Parent  externalId              type
1                       1               1
1                       2               1
1                       3               1
1                       8               2
1                       9               2
1                       16              6

I want to do a query like "SELECT externaId, type FROM external_maps
where Parent=%parent%"

I want to get a result that is a Map<Integer, Integer[]> (or
Map<Integer, List<Integer>>) where the key is type and the Integer[] (or
List<Integer)) is the list of externalId values.

Will queryForMap do this? If not, is there another (easy) way to get
this result?

Thanks,
Daniel.