The query mentioned below does not work without an "as" but does with an "as".
Is this likely a bug? I am relatively new to NHibernate and the .net OSS world in general, where can I find instructions for submitting a test displaying the behavior? Is it likely that there is another problem with the query which is causing this behavior and the "as" solves? By that I mean that should this query be altered in a different way and would thus not require the "as"? Would you be so kind to elaborate a bit on your statement and explain the realm of possibilities to the uninitiated? -----Original Message----- From: Fabio Maulo <[email protected]> Date: Mon, 14 Dec 2009 09:33:34 To: <[email protected]> Subject: Re: [nhusers] Re: Populating child collections in HQL - Summer of Nhibernate 06 - Elements "as" in the alias of a "from" clause should never be required. 2009/12/14 Yonah Wahrhaftig <[email protected]> > I would love to hear an explanation from anyone else on the list on this. > > When is an explicit "as" required? I recall that at the time I stepped > through the Antlr parser and saw that it was choking on not recognizing the > "o" as an alias, but don't believe I ever understood why? > -----Original Message----- > From: RobB <[email protected]> > Date: Mon, 14 Dec 2009 00:17:27 > To: nhusers<[email protected]> > Subject: [nhusers] Re: Populating child collections in HQL - Summer of > Nhibernate 06 - Elements > > Yep - "as o" rather than simply "o" did the trick. Can't believe I > didn't try it but thanks very much for that, it hopefully won't get me > next time. > > Rob > > > On 9 Dec, 11:54, "Yonah Wahrhaftig" <[email protected]> wrote: > > I solved this problem by specifying as o. > > "select distinct c from Customer c , c.Orders.elements as o where > > o.OrderDate > :orderDate" > > > > ------Original Message------ > > From: RobB > > Sender: [email protected] > > To: nhusers > > ReplyTo: [email protected] > > Subject: [nhusers] Populating child collections in HQL - Summer of > Nhibernate 06 - Elements > > Sent: Dec 7, 2009 10:18 AM > > > > Hi, > > > > I've been working through the screen casts Steve B. put together > > building up to using Nhibernate on my next project. I'm up to Session > > 6, Advanced Querying of Child Collections and have hit a problem when > > trying to get Steve's HQL example to work. I know Steve frequents > > this group and there is a blog for SOH but thought I'd ask in here as > > I've just registered for the group and thought my idiotic question > > would act as a good introduction. > > > > Anyway the idea was to retrieve a customer and a collection of their > > orders, where the orders were placed after a given date. The HQL > > was : > > > > "select distinct c from Customer c , c.Orders.elements o where > > o.OrderDate > :orderDate" > > > > I was getting an error of "c.Orders.elements is not mapped". I had a > > dig around and it seemed that the syntax for getting a collection of > > elements had changed, the correct syntax would be "elements > > (c.Orders)". > > > > I tried using this but then got an > > "Antlr.Runtime.MissingTokenException". I couldn't find any further > > examples without an explicit join on the child objects and so have > > ended up using the following : > > > > "Select distinct c from Customer c inner join fetch c.Orders o where > > o.OrderDate > :orderDate" > > > > I'd much rather use a construct along the lines of the first HQL > > statement with an implicit join and I know I probably can't see the > > wood for the trees. Can anyone give me any pointers on this one? > > > > Many thanks > > > > Rob > > > > -- > > > > You received this message because you are subscribed to the Google Groups > "nhusers" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > [email protected]<nhusers%[email protected]> > . > > For more options, visit this group athttp:// > groups.google.com/group/nhusers?hl=en. > > > > Sent via BlackBerry > > -- > > You received this message because you are subscribed to the Google Groups > "nhusers" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<nhusers%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/nhusers?hl=en. > > > -- > > You received this message because you are subscribed to the Google Groups > "nhusers" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<nhusers%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/nhusers?hl=en. > > > -- Fabio Maulo -- You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nhusers?hl=en. -- You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nhusers?hl=en.
