Question

执行以下代码时出错 错误：无法评估表达式，因为代码已优化或本机框架位于调用堆栈之上

public ICollection<Employee> GetEmployeeDataList(RetriveEmployeeDetailsOnEntity request)
{
    ICollection<Employee> returnValue = null;

    SectionManagerHr.Execute(() =>
    {
        using (var tx = _Dao.Session.BeginTransaction())
        {
            var query = getEmployeeDataQuery(request);

            returnValue = query.List();
            tx.Commit();
        }
    });

    return returnValue;
}

private IQueryOver<Employee> getEmployeeDataQuery(RetriveEmployeeDetailsOnEntity request)
{
    Employee employee = null;
    EmployeeData employeeData = null;
    EmployeePayrollDefinition employeePayrollDefinition = null;

    var query = _Dao.Session
         .QueryOver(() => employee)
         .JoinAlias(() => employee.EmployeeDataList, () => employeeData, JoinType.LeftOuterJoin)
         .JoinAlias(() => employee.EmployeePayrollDefinitionList, () => employeePayrollDefinition, JoinType.LeftOuterJoin)
         .TransformUsing(Transformers.DistinctRootEntity)
        .Where(() => employee.CompanyEntityId == request.EntityId);
    return query;
}

Answer 1

我想说，你得到的例外就是解决真正的问题：

NHibernate.QueryException：无法同时获取多个行李。

因为我希望这些是集合：

 employee.EmployeeDataList  // expect it is a IList<EmployeeData>
 employee.EmployeePayrollDefinitionList // IList<EmployeePayrollDefinition>

并且它们都不能在一个查询中使用。

我建议使用某种批量提取：

.Net与hibernate查询

1 个答案: