I have a one-to-many association from Project to
ProjectSampleRelationship.
ProjectSampleRelatiosnhip is conceptually a ValueObject though in NH
it is a entity.
Therefore, I want to DELETE and INSERT any updates to a
ProjectSampleRelationship in the <set/> of SampleRelationships.
The unique constraint violation is thrown because NH does the INSERT
before the DELETE on the new association.
I have tried a ton of cascade options and also futzed with the
ProjectSampleRelationship Equals/HashCode. How can I do something like
this using the cascade?
Here is code that removes the relationshp from the
Project.SampleRelationships collection:
ProjectSampleRelationship subject = Collection.Find
(sampleRelationships,
r =>
r.Relation.Equals(projectRelatable));
bool removed = sampleRelationships.Remove(subject);
subject.Project=null;
subject.Relation=null;
And here are my mappings:
<!--in Project-->
<set name="SampleRelationships"
access="nosetter.camelcase"
inverse="true"
cascade="all-delete-orphan" >
<key column="ProjectId"/>
<one-to-many
class="Cei.MaterialsTesting.Projects.ProjectSampleRelationship,Cei.MaterialsTesting"
/
>
</set>
<!-- in ProjctSampleRelationship-->
<many-to-one name="Project"
class="Cei.MaterialsTesting.Projects.Project"
access="field.camelcase"
unique-key="ProjectSample"
/>
<many-to-one name="Relation"
access="nosetter.camelcase"
class="Cei.MaterialsTesting.Samples.Sample"
column="Sample"
cascade="none"
unique-key="ProjectSample"/>
--~--~---------~--~----~------------~-------~--~----~
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
-~----------~----~----~----~------~----~------~--~---
