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Return custom object from Spring Data with Native Query

My question is based on another post. How can I achieve the same with a native query? Native queries do not allow JPQL thus do not allow new instances either.

My POJO.

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My database table contains coordinates for cities perimeter, so there are three columns: city_name, latitude, longitude. Each city contains lots (really, LOTS) of perimeter coordinates that will be used to build a shadow area in Google Maps.

I intend to build a simple native query on that table that should return a list of coordinates.

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Answer

Found the answer on another post. Basically I used SqlResultSetMapping along with ConstructorResult (no other way worked out) with a special attention to a comment on the accepted answer of the mentioned post: you need to add the @NamedNativeQuery annotation to the entity of the used interface AND prepend the entity’s name with a . otherwise it won’t work.

Example:

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