[nhibernate-issues] [JIRA] Created: (NH-779) abstract class not recognized using multiple mapping files

[NHibernate J. <mik...@us...>]

abstract class not recognized using multiple mapping files
----------------------------------------------------------

         Key: NH-779
         URL: http://jira.nhibernate.org/browse/NH-779
     Project: NHibernate
        Type: Bug
    Versions: 1.0.2    
    Reporter: Hace



When an abstract class and (one or more) joined-subclasses are not in one mapping file, but joined-subclasses are in separate mappingfiles, the connection between the abstract class and the joined subclasses is lost. An error of 'cannot instantiate abstract class' occurs.


[ AbstractClass.hbm.xml ]

<hibernate-mapping>
  <class name="Namespace.Common.AbstractClass, Namespace.Common" table="GeneralItem">
    <id name="GeneralItemId"  type="Int32" column="GeneralItemId" >
      <generator class="identity"/>
    </id>
    <property name="GeneralText" column="GeneralText" />
    
    <joined-subclass name="Namespace.Common.A.ConcreteClassA, Namespace.Common.A" table="ItemsA" extends="Namespace.Common.AbstractClass, Namespace.Common">
      <key column="GeneralItemId" />
      ..concrete properties for A..
    </joined-subclass>
  
  </class>
</hibernate-mapping>


[ ConcreteClassB.hbm.xml ]

<hibernate-mapping>

  <joined-subclass name="Namespace.Common.B.ConcreteClassB, Namespace.Common.B" table="ItemsB" extends="Namespace.Common.AbstractClass, Namespace.Common">
      <key column="GeneralItemId" />
      ..concrete properties for B..
    </joined-subclass>

</hibernate-mapping>

Items for ConcreteClassB will not be loaded correctly, only because the joined-subclass is not in the SAME mappingfile as ConcreteClassA ?

[ Code ]

List<AbstractClass> itemList = new List<AbstractClass>();
   ISession session = OurSession.CurrentSession;
   ICriteria NHibernateCriteria = session.CreateCriteria(typeof(AbstractClass));
   NHibernateCriteria.Add(Expression.In("GeneralItemId", generalItemIds.ToArray()));
   try
   {
     IEnumerable<AbstractClass> enumerable = (AbstractClass[])ArrayList.Adapter(NHibernateCriteria.List()).ToArray(typeof(AbstractClass));
     itemList = new List<AbstractClass>(enumerable);
   }
   catch(Exception exception)
   {
      ... log exception..
   }
......
  dostuff
  foreach(ConcreteClassA in itemList)
 .... 

[ /code ]





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