How could I wrap a native sql query into a map using new map?

I would like to create named native queries and their results should be returned in map collection datasources for use in reports.

I would like to use something like the following example:



Of course this is a simple example that could be easily done with HQL.
But I have many complex SQL queries already done that I want to migrate to Java using Hibernate.

Now I use something like this:



The problem is that I have to iterate over the resulting list to convert each element to a Map and add them to a new list.

So, can I use new map with native queries? Any other suggestion?