Rewrite string-queries to use constructor expressions when return type is DTO

[gregturn]

Consider the following query:

@Entity
class Person { … }

class PersonProjection { … }


@Query("SELECT p FROM Person p")
PersonProjection findBy(…)

The query selects items from the Person entity while its return type is a DTO projection.

It would be good to rewrite such queries to use DTO projections for matching properties along the lines of:

@Query("SELECT new com.acme.PersonProjection(p.firstName, p.lastName) FROM Person p")
PersonProjection findBy(…)