I just upgraded a project to version 2.1 and noticed an issue with
some mapping files
Here is the old way (ends up with a NHibernate.MappingException:
Association references unmapped class)
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
assembly="Sage.Domain.Entities"
namespace="AMEC.EE.Sage.Domain.Entities.App">
<!--
********************************************************************************
* Since: November 2008
* Author: Darin Padlewski
**********************************************************************************
-->
<class name="AMEC.EE.Sage.Domain.Entities.MetaElement`1[[IUnitObj]]"
table="UnitsMeta"
schema="App"
lazy="false"
dynamic-insert="true"
dynamic-update="true"
select-before-update="true">
... the rest of the class map
</class>
<class name="UnitObj"
table="Units"
schema="App"
lazy="true"
dynamic-insert="true"
dynamic-update="true"
select-before-update="true">
... More mapping
<set name="metaData"
lazy="true"
access="field"
generic="true"
cascade="all-delete-orphan"
inverse="true">
<key column="UnitRowID"/>
<one-to-many class="AMEC.EE.Sage.Domain.Entities.MetaElement`1
[[AMEC.EE.Sage.Domain.Entities.App.IUnitObj, Sage.Domain.Entities]]" /
>
</set>
... the rest of the mapping
That used to work in version 2.0
But... the exception when spinning up the session is
NHibernate.MappingException: Association references unmapped class:
AMEC.EE.Sage.Domain.Entities.MetaElement`1
[[AMEC.EE.Sage.Domain.Entities.App.IUnitObj, Sage.Domain.Entities]]
Which is sort of true because in the info logging:
INFO - Mapping class: AMEC.EE.Sage.Domain.Entities.MetaElement`1
[[AMEC.EE.Sage.Domain.Entities.App.IUnitObj, Sage.Domain.Entities,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=null]] -> UnitsMeta
INFO - Mapping class: AMEC.EE.Sage.Domain.Entities.App.UnitObj ->
Units
So to fix this I had to modify the set to map as follows:
<set name="metaData"
lazy="true"
access="field"
generic="true"
cascade="all-delete-orphan"
inverse="true">
<key column="UnitRowID"/>
<one-to-many class="AMEC.EE.Sage.Domain.Entities.MetaElement`1
[[IUnitObj, Sage.Domain.Entities, Version=2.0.0.0, Culture=neutral,
PublicKeyToken=null]]" />
</set>
So now (in version 2.1) it looks like I need to provide the '
Version=2.0.0.0, Culture=neutral, PublicKeyToken=null' as well.
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