Cascading a delete for all objects

Ayende Rahien · **Joined:** Sat Sep 24, 2005 11:25 am **Posts:** 198

I've a very strange problem. NHibernate is capable of deleting a single item, but it refuse to delete them all.
I'm getting a "NHibernate.ObjectDeletedException : deleted object would be re-saved by cascade (remove deleted object from associations): 18, of class: Model.Assignment" error when it happens.

I'm doing something like:

session.Delete("from Assignment");

And it fails.

Trying to do delete a single item.
I can't figure out why this is happening!

The mapping is here:

Code:

<hibernate-mapping xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:nhibernate-mapping-2.0">
  <class name=".Model.FixedWorkPlanAssignment, .Model" table="FixedWorkPlanAssignments"    >
    <id name="Id" access="nosetter.camelcase-underscore" column="WorkPlanAssignmentId" type="Int32"  unsaved-value="0">
      <generator class="native">
      </generator>
    </id>
    <property name="_occupationId" access="field" column="OccupationId" type="Int32"        />
    <property name="AssignmentDays" access="property" column="AssignmentDays"         />
    <property name="CycleType" access="property" column="CycleType"         />
    <many-to-one name="BoardTemplate" access="NHibernate.Generics.GenericAccessor, NHibernate.Generics" class=".Model.BoardTemplate, .Model" column="BoardTemplateId"      />
    <many-to-one name="FixedWorkPlan" access="NHibernate.Generics.GenericAccessor, NHibernate.Generics" class=".Model.FixedWorkPlan, .Model" column="WorkPlanId"      />
    <many-to-one name="ShiftTemplate" access="NHibernate.Generics.GenericAccessor, NHibernate.Generics" class=".Model.ShiftTemplate, .Model" column="ShiftTemplateId"      />
    <many-to-one name="TaskTemplate" access="NHibernate.Generics.GenericAccessor, NHibernate.Generics" class=".Model.TaskTemplate, .Model" column="TaskTemplateId"      />
  </class>
</hibernate-mapping>

Here is what fails:

Code:

session.Delete("from Model.Assignment");
session.Flush();

[/code]

Ayende Rahien · **Joined:** Sat Sep 24, 2005 11:25 am **Posts:** 198

I should mention that assignment is references by several objects, (it's the child most object), and those references' cascades are all-delete-orphans

Ayende Rahien · **Joined:** Sat Sep 24, 2005 11:25 am **Posts:** 198

Okay, I changed them all to cascade = "none" and it's working, but it's not what I wanted.
I want it to delete all assignments if I delete the employee schedule.

How do I get both of them?

Ayende Rahien · **Joined:** Sat Sep 24, 2005 11:25 am **Posts:** 198

Looks like it's the day where I keep replying to myself :-)

Anyway, another request, is it possible to add the parent of the referencing collection, so I wouldn't have to debug NHibernate to figure out where the problem is?

KPixel · **Posted:** Mon Oct 24, 2005 10:30 am

I'm here now :)

I hardly understand your problem... In the mapping you posted, the "Assignment" is called FixedWorkPlanAssignment and the mapping of the employee schedule is missing...

For your last request, you can create a JIRA issue ;)

OT: What's the purpose of the "." before classes names? (eg: ".Model.FixedWorkPlan")?

Knight · **Joined:** Tue May 17, 2005 11:42 am **Posts:** 22

Maybe you are having the same problem as me.
http://nhibernate.sourceforge.net/forum ... .php?t=749