It works! Thanks! But what does "inverse" mean? So many articles say that
inverse = false means the child objects should be inserted first, then the
parent object. And then the foreign key in the child table gets updated.
Like this one:
http://blog.jonathanoliver.com/2009/09/nhibernate-inverse-and-object-associations/
If a not-null="true" can let parent object get inserted first, what is the
use of the inverse attribute?
On Tuesday, October 2, 2012 5:38:08 PM UTC+8, cremor wrote:
>
> Just add not-null="true" to the key element of your collection mapping.
>
> On Friday, September 21, 2012 11:40:11 AM UTC+2, Mouhong Lin wrote:
>>
>> Hi guys,
>>
>> This is the models:
>>
>> public class BlogPost {
>> public virtual int Id { get; set; }
>> public virtual IList<Comment> Comments { get; set; }
>> }
>>
>> public class Comment {
>> public virtual int Id { get; set; }
>> public virtual string Content { get; set; }
>>
>> // public virtual BlogPost BlogPost { get; set; }
>> }
>>
>> Notice the commented line above.
>>
>> I do *NOT *want the bidirectional association between BlogPost and
>> Comment.
>> I want BlogPost to have a Comments collection, but do not want Comment to
>> have a reference back to BlogPost.
>>
>> As far as I know, this requires the mapping of Comments collection to be
>> *inverse = "false"*, and this requires the foreign key (BlogPostId) in
>> the Comment table to be *nullable*. But from the database modeling's
>> point of view, the foreign key BlogPostId should be not-null.
>>
>> So, I want the foreign key BlogPostId in the Comment table to be
>> not-null, while still keeping the association unidirectional, that is,
>> remove the BlogPost property from Comment class. Can I do that? Thanks
>>
>> *BTW*: Could anyone who is the manager of this group add me to the
>> group? Now I can't publish posts without your verification. :-( Thanks.
>>
>
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