SELECCIONE NUEVO en JPQL

Question

Tengo un problema con una consulta SELECT NEW.

Query q = em.createQuery(
           "SELECT NEW com.bcbst.odstats.ejb.RangeStats(a.folderName, SUM(a.hits)) " +  
           "FROM ODStat a GROUP BY a.folderName");
return q.getResultList();

Recibo el siguiente stacktrace cuando intento ejecutar esta consulta. RangeStats tiene métodos públicos, la FQN es precisa, de hecho RangeStats reside en el mismo paquete que la clase haciendo la consulta. He hecho consultas en ODStat antes, así que también estoy seguro de que a.folderName y a.hits están bien.

Estoy desarrollando con RAD 7.5, WAS 7, OpenJPA 1.2.1, MS SQL JDBC Driver 1.2.

    at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:896)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1527)
Caused by: javax.ejb.EJBException: See nested exception; nested exception is: 
<openjpa-1.2.1-SNAPSHOT-r422266:686069 nonfatal user error> 
org.apache.openjpa.persistence.ArgumentException: Result type "class 
com.bcbst.odstats.ejb.RangeStats" does not have any public fields or setter methods 
for the projection or aggregate result element "jpqlalias1", nor does it have a 
generic put(Object,Object) method that can be used, nor does it have a public 
constructor that takes the types [class java.lang.String, long].

Caused by: <openjpa-1.2.1-SNAPSHOT-r422266:686069 nonfatal user error> 
org.apache.openjpa.persistence.ArgumentException: Result type "class 
com.bcbst.odstats.ejb.RangeStats" does not have any public fields or setter methods 
for the projection or aggregate result element "jpqlalias1", nor does it have a 
generic put(Object,Object) method that can be used, nor does it have a public 
constructor that takes the types [class java.lang.String, long].

at org.apache.openjpa.kernel.ResultPacker.<init>(ResultPacker.java:139)
at org.apache.openjpa.kernel.ResultPacker.<init>(ResultPacker.java:102)
at org.apache.openjpa.kernel.QueryImpl.getResultPacker(QueryImpl.java:1262)
at org.apache.openjpa.kernel.QueryImpl.toResult(QueryImpl.java:1212)
at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:990)
at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:805)

Answer 1

Encontró el problema. El constructor aceptó (String, int) cuando necesitaba (String, long) .

Answer 2

Sígueme

 public Company(String name, int iva, String businessArea, String coreBusiness) {
    this.name = name;
    this.iva = iva;
    this.businessArea = businessArea;
    this.coreBusiness = coreBusiness;
    }

Query query = session.createQuery("select new Company (name, iva, businessArea, coreBusiness)  from Company");


obs : org hibernate