consulta especifica la recuperación por unión, pero el dueño de la asociación inverosímil no estaba presente en la lista de selección

Question

estoy seleccionando dos columnas id pero conseguir especificada de error:

org.hibernate.QueryException: **query specified join fetching, but the owner of the fetched association was not present in the select list** 

[FromElement{explicit,not a collection join,fetch join,fetch non-lazy properties,classAlias=r,role=null,tableName=REVISIONS,tableAlias=revision1_,origin=ENTITY_CHANGED_IN_REVISION entitychan0_,columns={entitychan0_.REV_ID ,className=ru.csbi.registry.domain.envers.Revision}}] [ select ec.id as entityChangeId, r.id as revisionId from ru.csbi.registry.domain.envers.EntityChange as ec inner join fetch ec.revision as r where ec.groupEntityId = :groupEntityId and ec.groupName = :groupName and r.timestamp < :entityDateFrom and r.timestamp > :entityDateTo and (  ec.revisionType in (0, 5, 1, 4, 2)  and not (ec.otherGroupEntityModified = false and ec.thisGroupEntityModified = true and ec.rowDataModified = false and ec.collectionOfNotGroupEntityModified = false )  ) group by ec.id, r.id having count(*) > :start order by r.id desc] 

Algunos código:

String hql = " select ec.id as entityChangeId, r.id as revisionId from EntityChange as ec " + 
      " inner join fetch ec.revision as r " + 
      " where ec.groupEntityId = :groupEntityId" + 
      " and ec.groupName = :groupName " + 
      " and r.timestamp < :entityDateFrom " + 
      " and r.timestamp > :entityDateTo " + 
      " and (" + 
      "  ec.revisionType in (" + 
         RevisionType.ADD.getRepresentation() + ", " + 
         RevisionType.ONLY_DATA_PROPERTY_MOD.getRepresentation() + ", " + 
         RevisionType.BOTH_COLLECTION_AND_PROPERTY_MOD.getRepresentation() + ", " + 
         RevisionType.ONLY_COLLECTION_PROPERTY_MOD.getRepresentation() + ", " + 
         RevisionType.DEL.getRepresentation() + 
        ") " + 
      "  and not ("+ 
        "ec.otherGroupEntityModified = false and " + 
        "ec.thisGroupEntityModified = true and " + 
        "ec.rowDataModified = false and " + 
        "ec.collectionOfNotGroupEntityModified = false " + 
       " ) " + 
      " ) " + 
      " group by ec.id, r.id " + 
      " having count(*) > :start" + 
      " order by r.id desc"; 

¿Cómo solucionar el error y qué estoy haciendo mal?

Answer 1

uso regular join en lugar de join fetch (por cierto, es inner por defecto):

String hql = " select ec.id as entityChangeId, r.id as revisionId from EntityChange as ec " + 
     " join ec.revision as r " + ... 

Como mensaje de error que dice, join fetch no tiene sentido aquí, porque es un indicio rendimiento que obliga ansiosos carga de la colección.