Try using an auto-implemented property (change mapping accordingly):
*public virtual IEnumerable<VerificacaoVersao> verificacoes { get;
protected set; }*
And let us know if it works. Yes, yes, I know, that's not what you
have/want to have, but just for debugging.
RP
On Wednesday, November 19, 2014 4:32:21 PM UTC, Marcelo Zabani wrote:
>
> We are using Fluent Nhibernate, and this is the relevant mapping override
> section for our problem entity, *VersaoQuestao*:
>
> *mapping.HasMany(x => x.verificacoes)*
> * .KeyColumn("versaoquestao_id")*
> *
>
> .Access.ReadOnlyPropertyThroughLowerCaseField(FluentNHibernate.Mapping.Prefix.Underscore)*
> * .Inverse()*
> * .Cascade.All();*
>
> The code for the properties is as follows:
>
> *protected IList<VerificacaoVersao> _verificacoes;*
> *public virtual IEnumerable<VerificacaoVersao> verificacoes*
> *{*
> * get*
> * {*
> * return _verificacoes ?? Enumerable.Empty<VerificacaoVersao>();*
> * }*
> *}*
>
> As you can see, "related_entities" is actually "verificacoes". The strange
> thing is that this mapping has always worked. This is the first time it
> fails us, and it seems to be when we a get a proxy of *VersaoQuestao*. To
> further illustrate, using *Version 1* below triggers the bug. *Version 2*
> works fine.
>
> *- Version 1 *(this one retrieves an instance of *VersaoQuestaoEntregue*,
> associated many-to-one with a proxy of *VersaoQuestao*, which has the
> property "verificacoes" with the nosetter one-to-many mapping):
>
> * VersaoQuestaoEntregue entrega = entregas.GetById(entregaId);*
>
> * // Do a bunch of work, add elements to "_verificacoes"*
>
> * // entrega.versao.verificacoes returns an empty IEnumerable, even
> though "_verificacoes" has elements in it according to the debugger*
>
> *- Version 2* (this one eager fetches *VersaoQuestao* and works fine)
>
> * VersaoQuestaoEntregue entrega =
> session.Query<VersaoQuestaoEntregue>()*
> *
> .Where(ent => ent.id <http://ent.id> == entregaId)*
> *
> .Fetch(ent => ent.versao)*
> *
> .FirstOrDefault();*
>
> * // Do a bunch of work, add elements to "_verificacoes"*
>
> * // entrega.versao.verificacoes returns an IEnumerable with all the
> elements in "_verificacoes"! Things work fine.*
>
>
> In fact, my Unit Test breaks/passes just by changing how we obtain the
> instance of *VersaoQuestaoEntregue*. This led to me think that the
> problem was with the proxy of *VersaoQuestao.*
>
> Any thoughts?
>
> On Wed, Nov 19, 2014 at 11:07 AM, Ricardo Peres <[email protected]
> <javascript:>> wrote:
>
>> What is the exact call you are using to map the collection property?
>>
>> RP
>>
>>
>> On Wednesday, November 19, 2014 1:05:57 PM UTC, Ricardo Peres wrote:
>>>
>>> There is a configuration setting to bypass the check.
>>>
>>> RP
>>>
>>> On Wednesday, November 19, 2014 12:15:22 PM UTC, Marcelo Zabani wrote:
>>>>
>>>> Oops, sorry for the typo, but it is actually a virtual property getter
>>>> (I don't think the Session Factory would even be built if it weren't,
>>>> right?).
>>>>
>>>> On Wed, Nov 19, 2014 at 7:17 AM, Ricardo Peres <[email protected]>
>>>> wrote:
>>>>
>>>>> Have you tried setting related_entities property as virtual?
>>>>>
>>>>> RP
>>>>>
>>>>>
>>>>> On Monday, November 17, 2014 7:40:48 PM UTC, Marcelo Zabani wrote:
>>>>>>
>>>>>> Hi everyone, before submitting this as a bug report, I want to make
>>>>>> sure that I'm not seeing things, and want to know if there is any more
>>>>>> information I can submit with the bug report to help. Here it goes:
>>>>>>
>>>>>> When an entity is lazy loaded, a One to Many collection mapped with
>>>>>> the nosetter strategy is not respected, i.e. "Getting" the property does
>>>>>> not execute the actual getter code. This does not happen with non
>>>>>> proxied
>>>>>> entities.
>>>>>>
>>>>>> In some more detail, I have a class named "ProblemEntity" with:
>>>>>>
>>>>>> *private IList<T> _related_entities = new List<T>();*
>>>>>> *public IEnumerable<T> related_entities { get { return
>>>>>> _related_entities; } }*
>>>>>>
>>>>>> Here "related_entities" is an inverse, one-to-many collection mapped
>>>>>> with the nosetter access strategy, with a lowercase and underscored
>>>>>> prefix
>>>>>> backing field. Cascade is set to All.
>>>>>> The problem arises when I have a proxy of "ProblemEntity": the public
>>>>>> getter "related_entities" always returns an empty IEnumerable<T>, even
>>>>>> when
>>>>>> "_related_entities" contains something. Eager fetching "ProblemEntity"
>>>>>> makes the problem go away.
>>>>>>
>>>>>> Sadly, I haven't been able to write a simple test case that elicits
>>>>>> this behavior. I have written a Unit Test for my own application to
>>>>>> catch
>>>>>> this, and switching between the proxy and non-proxy versions does make
>>>>>> the
>>>>>> test fail/succeed. I encountered this with NHibernate 3.3.1 and tried to
>>>>>> update to 4.0.2, but it is still happening.
>>>>>> If there is any more information I can provide to make this useful,
>>>>>> please tell me so.
>>>>>>
>>>>>> Thank you in advance,
>>>>>>
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