Support direct DTO mapping for repository query methods

Hi,

I am writing a custom query but as I am not able to cast the expression to some custom objects. In JPA you can do write custom queries like

@Query("SELECT new com.baeldung.aggregation.model.custom.CommentCount(c.year, COUNT(c.year)) "
  + "FROM Comment AS c GROUP BY c.year ORDER BY c.year DESC")
List<CommentCount> countTotalCommentsByYearClass(); 

But with ReactiveCassandraRepository I am getting errors org.springframework.data.cassandra.CassandraQuerySyntaxException:

How can I cast to custom object in ReactiveCassandraRepository?

[mp911de]

We currently do not have the means to map results through query methods onto DTO’s directly as we always need to consider the underlying entity in terms of column and type mapping. That is a general issue we have with all Spring Data modules and we plan to do something about it in general. For the time being, please use the CassandraTemplate directly to run aggregation queries without intermediate entity mapping.

[Zaky7]

as soon as I add maxSalary and minSalary in my Users class, it is working fine. is any better way of doing this??