Nhibernate CreateSQLQuery Stored Procedure result to non mapped class

问题

In my application I want to get data from a stored procedured where the table is not mapped in the application. In this stored procedure I added aliases to the column names which respond to the properties in my class.

HQL:

return Session.CreateSQLQuery("exec PER_PrikklokSaldi :IDPers :jaar :maand")
            .AddScalar("Description", NHibernateUtil.String)
            .AddScalar("StartSaldo", NHibernateUtil.Int32)
            .AddScalar("Plus", NHibernateUtil.Int32)
            .AddScalar("Minus", NHibernateUtil.Int32)
            .AddScalar("EndSaldo", NHibernateUtil.Int32)
            .SetParameter("IDPers", _employeeId)
            .SetParameter("jaar", _year)
            .SetParameter("maand", _month)
            .SetResultTransformer(new AliasToBeanResultTransformer(typeof(ClockInfoSaldi)))
            .List<ClockInfoSaldi>()
            .ToList();

Class:

public class ClockInfoSaldi
{
    public string Description { get; set; }
    public int StartSaldo { get; set; }
    public int Plus { get; set; }
    public int Minus { get; set; }
    public int EndSaldo { get; set; }
}

Stored Procedure result in MS SQL Management Studio:

I can run this:

var test = Session.CreateSQLQuery("exec PER_PrikklokSaldi :IDPers :jaar :maand")
            .SetParameter("IDPers", _employeeId)
            .SetParameter("jaar", _year)
            .SetParameter("maand", _month)

But when I run the first mentioned HQL code I get this error: {"could not execute query\r\n[ exec PER_PrikklokSaldi @p0 @p1 @p2 ]\r\n Name:IDPers - Value:827 Name:jaar - Value:2014 Name:maand - Value:1\r\n[SQL: exec PER_PrikklokSaldi @p0 @p1 @p2]"}

InnerException: {"Incorrect syntax near '@p1'."}

回答1:

The answer is hidden in the exception (and mostly in this part: "Incorrect syntax near '@p1'."):

{"could not execute query\r\n[ exec PER_PrikklokSaldi @p0 @p1 @p2 ]\r\n Name:IDPers - Value:827 Name:jaar - Value:2014 Name:maand - Value:1\r\n[SQL: exec PER_PrikklokSaldi @p0 @p1 @p2]"}

The parameters should be split by comma:

var test = Session.CreateSQLQuery("exec PER_PrikklokSaldi :IDPers, :jaar, :maand")
        .SetParameter("IDPers", _employeeId)
        .SetParameter("jaar", _year)
        .SetParameter("maand", _month)

or maybe rather this (for sql server)

"exec PER_PrikklokSaldi @IDPers=:IDPers, @jaar=:jaar, @maand=:maand"

To execute this instead

exec PER_PrikklokSaldi @p0, @p1, @p2

回答2:

This solution works now! I get a list of ClockInfoData objects with the correct values from the stored procedure.

return Session.CreateSQLQuery("exec PER_PrikklokData :IDPers, :jaar, :maand")
            .SetParameter("IDPers", _employeeId)
            .SetParameter("jaar", _year)
            .SetParameter("maand", _month)
            .SetResultTransformer(new AliasToBeanResultTransformer(typeof(ClockInfoData)))
            .List<ClockInfoData>()
            .ToList();

来源：https://stackoverflow.com/questions/23755828/nhibernate-createsqlquery-stored-procedure-result-to-non-mapped-class

标签

asp.net-mvc

nhibernate

stored-procedures

hql