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zdila
 Post subject: union-subclass with many-to-one doesn't work
PostPosted: Mon Jun 06, 2005 5:23 am 
Beginner
Beginner

Joined: Tue Apr 05, 2005 12:09 pm
Posts: 48
Location: Slovakia (SK), Košice (KE)
Hibernate version: 3

Hi

I use polymorphism "Table per concrete class" and if I define in union-subclass a many-to-one mapping then I have to do that in other union-subclass too, otherwise an exception is thrown. I've spent a long time to found that bug/feature.

Code:
<hibernate-mapping>
   <class name="com.kovine.kfe.dao.WidgetType" abstract="true">
      <id name="id" column="WIDGET_ID">
           <generator class="foreign">
               <param name="property">widget</param>
           </generator>
       </id>
       
       <one-to-one name="widget" class="com.kovine.kfe.dao.Widget" constrained="true" />

      <union-subclass name="com.kovine.kfe.dao.WidgetTypeSeparationLine" table="KFE_WIDGET_TYPE_SEPLINE">
         <!-- mapping 1 -->
         <many-to-one unique="true" name="tableColumn" class="com.kovine.kfe.dao.TableColumn" cascade="all" column="TABLE_COLUMN_ID" not-null="true" />
      </union-subclass>

      <union-subclass name="com.kovine.kfe.dao.WidgetTypeText" table="KFE_WIDGET_TYPE_INPUTTEXT">
         <!-- mapping 2 -->
         <many-to-one unique="true" name="tableColumn" class="com.kovine.kfe.dao.TableColumn" cascade="all" column="TABLE_COLUMN_ID" not-null="true" />
         <property name="width" column="WIDTH"></property>
         <property name="deletable" column="DELETABLE" not-null="true" />
      </union-subclass>
<hibernate-mapping>


Using this mapping it is not possible to omit "mapping 1" xor "mapping 2" otherwise after the Hibernate initialization following exception is thrown (short version):

Code:
INFO  SessionFactoryImpl - building session factory
ERROR HibernateUtil - Initial SessionFactory creation failed.
org.hibernate.MappingException: Could not determine type for column TABLE_COLUMN_ID of type org.hibernate.type.ManyToOneType: org.hibernate.MappingException
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:131)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.generateSubquery(UnionSubclassEntityPersister.java:320)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.<init>(UnionSubclassEntityPersister.java:135)
   at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:61)
   at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:199)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1043)
   at com.kovine.kfe.HibernateUtil.<clinit>(HibernateUtil.java:30)
...
Caused by: org.hibernate.MappingException: Unknown entity: com.kovine.kfe.dao.TableColumn
   at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:489)
   at org.hibernate.impl.SessionFactoryImpl.getIdentifierType(SessionFactoryImpl.java:563)
   at org.hibernate.type.EntityType.getIdentifierType(EntityType.java:216)
   at org.hibernate.type.EntityType.getIdentifierOrUniqueKeyType(EntityType.java:226)
   at org.hibernate.type.ManyToOneType.sqlTypes(ManyToOneType.java:29)
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:124)
   ... 87 more

Caused by: java.lang.ExceptionInInitializerError
   at com.kovine.kfe.HibernateUtil.<clinit>(HibernateUtil.java:34)
   at com.kovine.kfe.beans.BusinessCaseList.getList(BusinessCaseList.java:64)
   ... 80 more
Caused by: org.hibernate.MappingException: Could not determine type for column TABLE_COLUMN_ID of type org.hibernate.type.ManyToOneType: org.hibernate.MappingException
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:131)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.generateSubquery(UnionSubclassEntityPersister.java:320)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.<init>(UnionSubclassEntityPersister.java:135)
   at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:61)
   at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:199)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1043)
   at com.kovine.kfe.HibernateUtil.<clinit>(HibernateUtil.java:30)
   ... 81 more
Caused by: org.hibernate.MappingException: Unknown entity: com.kovine.kfe.dao.TableColumn
   at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:489)
   at org.hibernate.impl.SessionFactoryImpl.getIdentifierType(SessionFactoryImpl.java:563)
   at org.hibernate.type.EntityType.getIdentifierType(EntityType.java:216)
   at org.hibernate.type.EntityType.getIdentifierOrUniqueKeyType(EntityType.java:226)
   at org.hibernate.type.ManyToOneType.sqlTypes(ManyToOneType.java:29)
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:124)
   ... 87 more
Caused by: javax.faces.el.EvaluationException: Bean: com.kovine.kfe.beans.BusinessCaseList, property: list
   at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:423)
   at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:104)
   at org.apache.myfaces.el.ELParserHelper$MyPropertySuffix.evaluate(ELParserHelper.java:555)
   at org.apache.commons.el.ComplexValue.evaluate(ComplexValue.java:145)
   at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:441)
   ... 71 more
Caused by: java.lang.reflect.InvocationTargetException
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:324)
   at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:419)
   ... 75 more
Caused by: java.lang.ExceptionInInitializerError
   at com.kovine.kfe.HibernateUtil.<clinit>(HibernateUtil.java:34)
   at com.kovine.kfe.beans.BusinessCaseList.getList(BusinessCaseList.java:64)
   ... 80 more
Caused by: org.hibernate.MappingException: Could not determine type for column TABLE_COLUMN_ID of type org.hibernate.type.ManyToOneType: org.hibernate.MappingException
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:131)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.generateSubquery(UnionSubclassEntityPersister.java:320)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.<init>(UnionSubclassEntityPersister.java:135)
   at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:61)
   at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:199)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1043)
   at com.kovine.kfe.HibernateUtil.<clinit>(HibernateUtil.java:30)
   ... 81 more
Caused by: org.hibernate.MappingException: Unknown entity: com.kovine.kfe.dao.TableColumn
   at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:489)
   at org.hibernate.impl.SessionFactoryImpl.getIdentifierType(SessionFactoryImpl.java:563)
   at org.hibernate.type.EntityType.getIdentifierType(EntityType.java:216)
   at org.hibernate.type.EntityType.getIdentifierOrUniqueKeyType(EntityType.java:226)
   at org.hibernate.type.ManyToOneType.sqlTypes(ManyToOneType.java:29)
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:124)
   ... 87 more
Caused by: org.hibernate.MappingException: Could not determine type for column TABLE_COLUMN_ID of type org.hibernate.type.ManyToOneType: org.hibernate.MappingException
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:131)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.generateSubquery(UnionSubclassEntityPersister.java:320)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.<init>(UnionSubclassEntityPersister.java:135)
   at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:61)
   at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:199)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1043)
   at com.kovine.kfe.HibernateUtil.<clinit>(HibernateUtil.java:30)
   ... 81 more
Caused by: org.hibernate.MappingException: Unknown entity: com.kovine.kfe.dao.TableColumn
   at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:489)
   at org.hibernate.impl.SessionFactoryImpl.getIdentifierType(SessionFactoryImpl.java:563)
   at org.hibernate.type.EntityType.getIdentifierType(EntityType.java:216)
   at org.hibernate.type.EntityType.getIdentifierOrUniqueKeyType(EntityType.java:226)
   at org.hibernate.type.ManyToOneType.sqlTypes(ManyToOneType.java:29)
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:124)
   ... 87 more
java.lang.reflect.InvocationTargetException
Caused by: java.lang.ExceptionInInitializerError
   at com.kovine.kfe.HibernateUtil.<clinit>(HibernateUtil.java:34)
   at com.kovine.kfe.beans.BusinessCaseList.getList(BusinessCaseList.java:64)
   ... 80 more
Caused by: org.hibernate.MappingException: Could not determine type for column TABLE_COLUMN_ID of type org.hibernate.type.ManyToOneType: org.hibernate.MappingException
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:131)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.generateSubquery(UnionSubclassEntityPersister.java:320)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.<init>(UnionSubclassEntityPersister.java:135)
   at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:61)
   at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:199)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1043)
   at com.kovine.kfe.HibernateUtil.<clinit>(HibernateUtil.java:30)
   ... 81 more
Caused by: org.hibernate.MappingException: Unknown entity: com.kovine.kfe.dao.TableColumn
   at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:489)
   at org.hibernate.impl.SessionFactoryImpl.getIdentifierType(SessionFactoryImpl.java:563)
   at org.hibernate.type.EntityType.getIdentifierType(EntityType.java:216)
   at org.hibernate.type.EntityType.getIdentifierOrUniqueKeyType(EntityType.java:226)
   at org.hibernate.type.ManyToOneType.sqlTypes(ManyToOneType.java:29)
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:124)
   ... 87 more
java.lang.ExceptionInInitializerError
   at com.kovine.kfe.HibernateUtil.<clinit>(HibernateUtil.java:34)
...
Caused by: org.hibernate.MappingException: Could not determine type for column TABLE_COLUMN_ID of type org.hibernate.type.ManyToOneType: org.hibernate.MappingException
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:131)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.generateSubquery(UnionSubclassEntityPersister.java:320)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.<init>(UnionSubclassEntityPersister.java:135)
   at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:61)
   at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:199)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1043)
   at com.kovine.kfe.HibernateUtil.<clinit>(HibernateUtil.java:30)
   ... 81 more
Caused by: org.hibernate.MappingException: Unknown entity: com.kovine.kfe.dao.TableColumn
   at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:489)
   at org.hibernate.impl.SessionFactoryImpl.getIdentifierType(SessionFactoryImpl.java:563)
   at org.hibernate.type.EntityType.getIdentifierType(EntityType.java:216)
   at org.hibernate.type.EntityType.getIdentifierOrUniqueKeyType(EntityType.java:226)
   at org.hibernate.type.ManyToOneType.sqlTypes(ManyToOneType.java:29)
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:124)
   ... 87 more
org.hibernate.MappingException: Could not determine type for column TABLE_COLUMN_ID of type org.hibernate.type.ManyToOneType: org.hibernate.MappingException
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:131)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.generateSubquery(UnionSubclassEntityPersister.java:320)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.<init>(UnionSubclassEntityPersister.java:135)
   at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:61)
   at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:199)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1043)
   at com.kovine.kfe.HibernateUtil.<clinit>(HibernateUtil.java:30)
...
Caused by: org.hibernate.MappingException: Unknown entity: com.kovine.kfe.dao.TableColumn
   at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:489)
   at org.hibernate.impl.SessionFactoryImpl.getIdentifierType(SessionFactoryImpl.java:563)
   at org.hibernate.type.EntityType.getIdentifierType(EntityType.java:216)
   at org.hibernate.type.EntityType.getIdentifierOrUniqueKeyType(EntityType.java:226)
   at org.hibernate.type.ManyToOneType.sqlTypes(ManyToOneType.java:29)
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:124)
   ... 87 more
org.hibernate.MappingException: Unknown entity: com.kovine.kfe.dao.TableColumn
   at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:489)
   at org.hibernate.impl.SessionFactoryImpl.getIdentifierType(SessionFactoryImpl.java:563)
   at org.hibernate.type.EntityType.getIdentifierType(EntityType.java:216)
   at org.hibernate.type.EntityType.getIdentifierOrUniqueKeyType(EntityType.java:226)
   at org.hibernate.type.ManyToOneType.sqlTypes(ManyToOneType.java:29)
   at org.hibernate.mapping.Column.getSqlTypeCode(Column.java:124)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.generateSubquery(UnionSubclassEntityPersister.java:320)
   at org.hibernate.persister.entity.UnionSubclassEntityPersister.<init>(UnionSubclassEntityPersister.java:135)
   at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:61)
   at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:199)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1043)
   at com.kovine.kfe.HibernateUtil.<clinit>(HibernateUtil.java:30)
...


Please help me to solve this issue
Thanks in advance
Martin
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