Hello all

Excuse my english .
Could you help me with this issue?


Hibernate version 2.0.3

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
<class name="smi.SMIObject" table="object" discriminator-value="O">

<id name="id" column="id">
<column name="id" sql-type="char(32)" not-null="true"/>
<generator class="uuid.hex"/>
</id>
<discriminator column="object_type_id" type="character" />
<property name="name" />


<many-to-one name="objectType" cascade="delete" column="object_type_id" class="smi.ObjectType" not-null="true" insert="false" update="false"/>

<set name="entities" inverse="true" cascade="all-delete-orphan">
<key column="object_id"/>
<one-to-many class="smi.EntityValue"/>
</set>
<set name="groups" table="obj_group_lnk">
<key column="object_id"/>
<many-to-many column="groups_id" class="smi.Group"/>
</set>
<subclass name="smi.Article" discriminator-value="2">
<set name="persons" table="obj_lnk">
<key column="object_id"/>
<many-to-many column="object_id2" class="smi.Person"/>
</set >
<set name="authors" table="obj_lnk">
<key column="object_id"/>
<many-to-many column="object_id2" class="smi.Author"/>
</set>
</subclass>
<subclass name="smi.Person" discriminator-value="3">
<set name="articles" table="obj_lnk">
<key column="object_id2"/>
<many-to-many column="object_id" class="smi.Article"/>
</set>
</subclass >
<subclass name="smi.Author" discriminator-value="6">
<set name="articles" table="obj_lnk">
<key column="object_id2"/>
<many-to-many column="object_id" class="smi.Article"/>
</set>
</subclass>
</class>
</hibernate-mapping>

-------
content of "object" table

id name object_type_id
402890effb4fc66b00fb4fc6ac780001 | Max | 6 |
402890effb53c02700fb53c043e30001 | test art | 2 |

content of obj_lnk table

object_id object_id2
402890effb4fc66b00fb4fc6ac780001 | 02890effb53c02700fb53c043e30001


---------------
next code throw exception

Article article = new Article();
Session sess= SMISessionFactory.getSession();
Transaction tx = sess.beginTransaction();
String id = (String)sess.save(article);
tx.commit();
sess.refresh(article);





net.sf.hibernate.WrongClassException: Object with id: 402890effb4fc66b00fb4fc6ac780001 was not of the specified subclass: smi.Author (loaded object was of wrong class)
at net.sf.hibernate.loader.Loader.instanceAlreadyLoaded(Loader.java:300)
at net.sf.hibernate.loader.Loader.getRow(Loader.java:278)
at net.sf.hibernate.loader.Loader.doFind(Loader.java:159)
at net.sf.hibernate.loader.Loader.loadCollection(Loader.java:602)
at net.sf.hibernate.loader.CollectionLoader.initialize(CollectionLoader.java:82)
at net.sf.hibernate.impl.SessionImpl.initialize(SessionImpl.java:2897)
at net.sf.hibernate.collection.PersistentCollection.getInitialValue(PersistentCollection.java:128)
at net.sf.hibernate.type.PersistentCollectionType.getCollection(PersistentCollectionType.java:74)
at net.sf.hibernate.type.PersistentCollectionType.resolveIdentifier(PersistentCollectionType.java:177)
at net.sf.hibernate.impl.SessionImpl.initializeEntity(SessionImpl.java:1959)
at net.sf.hibernate.loader.Loader.doFind(Loader.java:196)
at net.sf.hibernate.loader.Loader.loadCollection(Loader.java:602)
at net.sf.hibernate.loader.OneToManyLoader.initialize(OneToManyLoader.java:102)
at net.sf.hibernate.impl.SessionImpl.initialize(SessionImpl.java:2897)
at net.sf.hibernate.collection.PersistentCollection.getInitialValue(PersistentCollection.java:128)
at net.sf.hibernate.type.PersistentCollectionType.getCollection(PersistentCollectionType.java:74)
at net.sf.hibernate.type.PersistentCollectionType.resolveIdentifier(PersistentCollectionType.java:177)
at net.sf.hibernate.impl.SessionImpl.initializeEntity(SessionImpl.java:1959)
at net.sf.hibernate.loader.Loader.doFind(Loader.java:196)
at net.sf.hibernate.loader.Loader.loadEntity(Loader.java:587)
at net.sf.hibernate.loader.EntityLoader.load(EntityLoader.java:42)
at net.sf.hibernate.persister.EntityPersister.load(EntityPersister.java:396)
at net.sf.hibernate.impl.SessionImpl.refresh(SessionImpl.java:1932)
at net.sf.hibernate.impl.SessionImpl.refresh(SessionImpl.java:1902)
at smi.admin.AddArtcileForm.init(AddArtcileForm.java:69)
at smi.admin.AddArtcileForm.<init>(AddArtcileForm.java:45)

But if i comment string about Person class in xml file - all work correctly. =(

Article is linked with person and Author using the same relation table and same object_id2, This cannot work. Hibernate will try to load a Person with an Author id.