Map the interface as the base class of the hierarchy.
2008/12/21 Germán Schuager <[email protected]>
> Thanks Fabio,
>
> I've solved it by adding the following to the mapping:
>
> <import class="Namespace.IDoSomething" rename="IDoSomething"/>
>
> and then doing:
>
> var results = session.CreateQuery("from
> IDoSomething").List<IDoSomething>();
>
>
> Is that what you mean by mapping of the base interface as an abstract
> class, or there is another way of doing this?
>
>
> On Sun, Dec 21, 2008 at 7:58 AM, Fabio Maulo <[email protected]> wrote:
>
>> You miss the mapping of the base interface as an abstract class.
>>
>> 2008/12/20 Germán Schuager <[email protected]>
>>
>> Hi, I need some help using HQL to query all objects that implement a
>>> specific interface.
>>>
>>> I have the following classes:
>>>
>>> public class CommonClass
>>>
>>> public interface IDoSomething
>>>
>>> public class ClassA : CommonClass, IDoSomething
>>>
>>> public class ClassB : CommonClass, IDoSomething
>>>
>>> public class ClassC : CommonClass
>>>
>>> I'm mapping this set of classes using table-per-subclass strategy.
>>>
>>> Querying using Criteria API works as expected:
>>> var results =
>>> session.CreateCriteria(typeof(IDoSomething)).List<IDoSomething>();
>>>
>>> But the following hql query does not work at all:
>>> var results = session.CreateQuery("from
>>> Namespace.IDoSomething").List<IDoSomething>();
>>>
>>> it throws this exception:
>>> NHibernate.QueryException : undefined alias or unknown mapping:
>>> NHibernate [from Namespace.IDoSomething]
>>>
>>> Can someone point me what I'm missing here?
>>>
>>>
>>>
>>>
>>
>>
>> --
>> Fabio Maulo
>>
>>
>>
>
> >
>
--
Fabio Maulo
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