Oracle 11g. I have a materialized view that is not showing up in the llbl designer. Is this not supported?

Materialized views are mapped as Entities. If you refresh and click 'Add entities' you should see your materialized view there. After all materialized views are those views in which the query result is cached as a concrete table.

Also, if a database element isn't showing up, first look in the catalog explorer and also the application output window to see if something was logged which shows the reason why it was ignored (e.g. a column with an UDT for example)

Ok, I figured out why the materialized view was not showing up in the designer, it was not in the db I was pointing to!

I was able to add it as an entity (the view does not have a primary key) but the generator is not generating any classes for me and there are no errors in the generator output.

Never mind. Figured it out. User error again....