?
On Mon, Sep 22, 2008 at 10:12 PM, Jon Palmer <[EMAIL PROTECTED]> wrote:
> Ok I will file the JIRA ticket. I'm not sure how I would
> use CreateCriteria(typeof(SpecialOrder)). I want my result set to inlcude
> Orders that are not SpecialOrders but do have a non-deleted Person.
> Suppose the left join of the Orders and Parties table looks like this
>
> Order.ID | Order.Class | Order.PersonID | Person.ID | Person.IsDeleted
>
> 1 | SpecialOrder | 1 | 1 | 0
> 2 | SpecialOrder | 2 | 2 | 1
> 3 | SpecialOrder | null | null |
> null
> 4 | Order | 1 | 1 |
> 0
> 5 | Order | 2 | 2 |
> 1
>
>
> I would expect to get back the first 4 orders but not order 1.
>
> Thanks
> Jon
>
> On Mon, Sep 22, 2008 at 12:04 PM, Ayende Rahien <[EMAIL PROTECTED]> wrote:
>
>> NRE is a bug, please create a test case and add it to the JIRA.
>> In the meantime, you can use CreateCriteria(typeof(SpecialOrder))
>>
>>
>> On Mon, Sep 22, 2008 at 9:59 PM, Jon Palmer <[EMAIL PROTECTED]> wrote:
>>
>>> I would appreciate some help combining logical expressions in criteria
>>> queries.
>>> My toy object model is three classes
>>>
>>> Order and a subclass SpecialOrder
>>> Person
>>>
>>> each Order has a Person property. I'm trying to do a query for all Orders
>>> where the order is of type special order or where the Order.Person is not
>>> deleted. I've tried this:
>>>
>>> DetachedCriteria detached= DetachedCriteria.For(typeof(Person), "p")
>>> .Add(Property.ForName("p.IsDeleted").Eq(false));
>>> ICriteria criteria = session.CreateCriteria(typeof (Order))
>>> .Add(Restrictions.Or(
>>> Property.ForName("class").Eq(typeof(SpecialOrder)),
>>> Property.ForName("Person").Eq(detached)
>>> )).List();
>>>
>>>
>>> but I get a null Reference exception in:
>>> "NHibernate.Criterion.SubqueryExpression.InitializeInnerQueryAndParameters(ICriteriaQuery
>>> criteriaQuery)"
>>>
>>>
>>> Any thoughts on how to get this kind of query right?
>>>
>>> Thanks
>>> Jon
>>>
>>>
>>> P.S. I'm expecting that the sql generated should look something like
>>> this:
>>>
>>> select .... from Orders o, left out join Persons p on o.PersonID = p.ID
>>> where
>>> o.Class = 'SpecialOrder' or (o.PersonID is not null and p.IsDeleted = 0)
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>
> >
>
--
Ken Egozi.
http://www.kenegozi.com/blog
http://www.musicglue.com
http://www.castleproject.org
http://www.gotfriends.co.il
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