> If nobody is answering you, which can be the reason ?
> nobody loves you ?
why annoy the users of your work?
> try to follow my advise:
> send here your mappings and your classes and explain your problem.
>
> The error in short:
> You are using a specific persistent entity that represent the many-to-many
> relation, this class has its others properties, but in the mapping of
Author
> and Book you are not using the class representing the relation.
> Before check if there is a bug or not you have to map your domain
correctly.
>
> Send here your mappings and try to explain your situation and you will see
> that somebody loves you.
I always thought objectified relationships (m:n relationships with
an intermediate entity with fields which aren't part of the pk/identifying
fields) weren't supported by nhibernate, only pure M:N (so intermediate
entity consists only of pk fields which are the FK fields in the two m:1
relationships of which it is the fk side) relationships, and in such a way
that the intermediate entity is hidden as well (so no class is mapped)
Example:
Employee:
- ID *
- FirstName
- LastName
Department:
- ID *
- Name
Pure m:n, supported:
extra table (intermediate entity) but no mapped class on this table:
EmployeeDepartment
- EmployeeID *
- DepartmentID *
Objectified m:n, not supported (at least I couldn't find info about this)
Extra table (intermediate entity), with mapped class:
EmployeeDepartment
- EmployeeID *
- DepartmentID *
- StartDate
IMHO, Jim wants this objectified relationship scenario, however that
requires that the intermediate entity has no mapped class.
FB
>
> On Sun, Jul 25, 2010 at 12:46 PM, Jim Geurts <[email protected]> wrote:
>
>
> I titled this post based on your comment here:
> http://216.121.112.228/browse/NH-2212.
> The classes, mappings, and nunit test are all included in the
> attachment in the JIRA issue.
>
>
>
>
> On Jul 25, 6:42 am, Fabio Maulo <[email protected]> wrote:
> > The title of this thread say: "when the relation is represented by
> a class
> > with additional properties"
> >
> > Where is the class, and its mapping, representing the many-to-many
> relation
> > ?
> >
> >
> >
> >
> >
>
> > On Sat, Jul 24, 2010 at 6:08 PM, Jim Geurts <[email protected]>
> wrote:
> > > I don't mean to be rude, but you closed the bug. You asked me
to
> post
> > > the issue to the list, which I did previously, multiple times...
> > > without reply. I created unit tests that reproduce this issue,
> yet
> > > still no reply from anyone. It seems like a common issue that
> people
> > > are going to run across. I'm just looking for either a
> description of
> > > how I'm mapping things wrong, or how to properly accomplish this
> type
> > > of situation...
> >
> > > Thanks,
> >
> > > Jim
> >
> > > On Jul 23, 6:49 pm, Fabio Maulo <[email protected]> wrote:
> > > > Perhaps with the whole mapping and classes somebody else may
> help you.
> >
> > > > --
> > > > Fabio Maulo
> >
> > > > El 23/07/2010, a las 13:01, Jim Geurts <[email protected]>
> escribió:
> >
> > > > > Fabio,
> >
> > > > > Since this is apparently not a bug and is a mapping error
> according to
> > > > > NH-2212, can you show me the light on what I'm doing wrong?
> >
> > > > > I have a bag defined for a many-to-many list:
> > > > > <class name="Author" table="Authors">
> > > > > <id name="Id" column="AuthorId">
> > > > > <generator class="identity" />
> > > > > </id>
> > > > > <property name="Name" />
> > > > > <bag name="Books" table="Author_Book_Map"
> where="IsDeleted=0"
> > > > > fetch="join">
> > > > > <key column="AuthorId" />
> > > > > <many-to-many class="Book" column="BookId"
> > > > > where="IsDeleted=0" />
> > > > > </bag>
> > > > > </class>
> >
> > > > > Now, if I return all author objects (using something like
> > > > > Session.Query<Author>().List<Author>()), I will get what
> initially
> > > > > appeared to be duplicate Author records: The extra author
> objects are
> > > > > created when an author is mapped to multiple books that vary
> by
> > > > > IsDeleted. Rather than creating one Author object with an
> enumerable
> > > > > that contains only the books with IsDeleted = 0, it will
> create two
> > > > > author objects. The first author
> > > > > object has a Books enumerable that contains books with
> IsDeleted = 0.
> > > > > The second author object will contain an enumerable of null
> book
> > > > > objects.
> >
> > > > > I'm thinking part of the problem stems from the map table
> objects
> > > > > linking to rows that do not meet the many-to-many where
> condition. Is
> > > > > this a configuration issue or something else?
> >
> > > > > Thanks,
> >
> > > > > Jim
> >
> > > > > --
> > > > > 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]
> <mailto:nhusers%[email protected]>
> <nhusers%[email protected]
> <mailto:nhusers%[email protected]> >
>
> > > .
> > > > > For more options, visit this group athttp://
> > > 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]
> <mailto:nhusers%[email protected]>
> <nhusers%[email protected]
> <mailto: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]
> <mailto: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.
