Datamapper DataMapper

There was an optimization in do_oracle that created Time objects instead of DateTime for speed reasons. This is either:

1) Broken when executing raw SQL, or
2) An invalid optimization, since the DATE type can contain values outside the range of a Time object

I'm not familiar enough with the code or Oracle to know 'correct' behaviour. The following commit fixed the issue for my use case though:
http://github.com/NZX/do/commit/b7b2a44d3e1c9b553d9ab3c35b49c4d7007...

To replicate:

> repository.adapter.select("SELECT my_date_column FROM my_table")
DataObjects::DataError: Couldn't parse time from class DateTime object (code: , sql state: , query: , uri: )
    from /Library/Ruby/Gems/1.8/gems/dm-core-0.10.2/lib/dm-core/adapters/data_objects_adapter.rb:285:in `next!'
    from /Library/Ruby/Gems/1.8/gems/dm-core-0.10.2/lib/dm-core/adapters/data_objects_adapter.rb:285:in `select_fields'
    from /Library/Ruby/Gems/1.8/gems/dm-core-0.10.2/lib/dm-core/adapters/data_objects_adapter.rb:37:in `select'
    from /Library/Ruby/Gems/1.8/gems/dm-core-0.10.2/lib/dm-core/adapters/data_objects_adapter.rb:269:in `with_connection'
    from /Library/Ruby/Gems/1.8/gems/dm-core-0.10.2/lib/dm-core/adapters/data_objects_adapter.rb:31:in `select'

Apologies, I don't have a development Oracle environment to provide a solid test case.