I have an entity hierarchy, using a discriminator column. The base
class is called Equipment and the derived class is called Tool. I can
load and query entities just fine, but when I go to Save an entity
that I've modified, it get this error:
No persister for: Castle.Proxies.ToolProxy
I find that odd. I'm able to save against a SQLite database in my
unit tests. I was also able to save a new Tool that I created. I
just wasn't able to save one I'd loaded earlier.
Now I loaded it in a previous session, and I'm thinking that could be
the problem, but I thought NHibernate would take care of entities that
were detached from sessions and put back into new sessions. Perhaps
you can enlighten me.
Here's my mapping file:
<class
name="Equipment"
table="EQUIPMENT"
discriminator-value="0">
<id name="Id" column="EQUIPMENT_ID">
<generator class="guid"/>
</id>
<discriminator
column="EQUIPMENTTYPE"
not-null="true"
type="System.Int32"/>
<component name="AuditHistory">
<property name="CreationDate" column="CREATION_DATE"
type="Timestamp"/>
<property name="CreatedBy" column="CREATED_BY"/>
<property name="LastModifiedDate" column="LASTMODIFIED_DATE"
type="Timestamp"/>
<property name="LastModifiedBy" column="LASTMODIFIED_BY"/>
</component>
<property name="Deleted" column="DELETED"/>
<many-to-one name="EquipmentSpecRevision"
class="EquipmentSpecRevision" column="EQUIPMENTSPECREV_ID" not-
null="true"
fetch="join" cascade="save-update" lazy="no-proxy"/>
<property name="EquipmentSite" column="EQUIPMENT_SITE"/>
<subclass
name="NetBom.Model.Domain.EquipmentManagement.Tools.Tool"
discriminator-value="1">
<property name="ToolNumber" column="TOOL_NUMBER"/>
<property name="OriginalJobNumber" column="ORIGINALJOBNUM"/>
</subclass>
</class>
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