String sql = "select a, b, sum (c) csum from a group by a, b";
    SQLQuery q = session.createSqlQuery (sql);
    q
        .addScalar ("a", IntegerType.INSTANCE)
        .addScalar ("b", IntegerType.INSTANCE)
        .addScalar ("csum", IntegerType.INSTANCE);
    q.setResultTransformer (new AliasToBeanResultTransformer (RankingModel.class));
    List<RankingModel> results = q.list ();

    public class RankingModel
    {
        public int a, b, csum;
    }

    String sql = "select a, b, sum (c) csum from a group by a, b";
    NativeQuery<RankingModel> q = session.createNativeQuery (sql, RankingModel.class);
    List<RankingModel> results = q.list ();

    org.hibernate.MappingException: Unknown entity: ... RankingModel] with root cause
    org.hibernate.MappingException: Unknown entity: ... RankingModel
        at org.hibernate.metamodel.internal.MetamodelImpl.entityPersister(MetamodelImpl.java:620)
        at org.hibernate.engine.spi.SessionFactoryImplementor.getEntityPersister(SessionFactoryImplementor.java:335)
        at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.getSQLLoadable(SQLQueryReturnProcessor.java:358)
        at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.processRootReturn(SQLQueryReturnProcessor.java:411)
        at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.processReturn(SQLQueryReturnProcessor.java:378)
        at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.process(SQLQueryReturnProcessor.java:180)
        at org.hibernate.loader.custom.sql.SQLCustomQuery.<init>(SQLCustomQuery.java:71)
        at org.hibernate.engine.query.internal.NativeQueryInterpreterStandardImpl.createQueryPlan(NativeQueryInterpreterStandardImpl.java:70)
        at org.hibernate.engine.query.spi.QueryPlanCache.getNativeSQLQueryPlan(QueryPlanCache.java:213)
        at org.hibernate.internal.AbstractSharedSessionContract.getNativeQueryPlan(AbstractSharedSessionContract.java:550)
        at org.hibernate.internal.AbstractSharedSessionContract.list(AbstractSharedSessionContract.java:992)
        at org.hibernate.query.internal.NativeQueryImpl.doList(NativeQueryImpl.java:148)
   ...

Transformers.aliasToBean( RankingModel.class )

CallStatistics callStatistics = entityManager.createQuery(
    "select new org.hibernate.userguide.hql.CallStatistics(" +
    "    count(c), " +
    "    sum(c.duration), " +
    "    min(c.duration), " +
    "    max(c.duration), " +
    "    avg(c.duration)" +
    ")  " +
    "from Call c ", CallStatistics.class )
.getSingleResult();

List<PersonSummaryDTO> dtos = session.createSQLQuery(
    "SELECT p.id as \"id\", p.name as \"name\" " +
    "FROM Person p")
.setResultTransformer (Transformers.aliasToBean (PersonSummaryDTO.class));