loadedState null when updateing an object

MARTINO · **Joined:** Thu Jun 24, 2004 4:06 am **Posts:** 9

Hibernate version: 3rc1

Mapping documents:

Code:

<hibernate-mapping package="com.reservit.plannit.data.bo.common">
   
   <class name="TextBO" table="text">
      <composite-id name="textID" class="TextID" unsaved-value="none">
           <key-property name="id" column="textid" type="long"/> 
         <key-property name="langCode" column="langcode" type="string"/> 
      </composite-id>
      <version name="version" type="integer" unsaved-value="null"/>
      <property name="text" column="value" type="string"/>
   </class>
   
</hibernate-mapping>

Code:

   <class name="CategoryBO" table="roomcategory">
      <id name="id" column="roomcategory" type="integer"> 
         <generator class="identity"/> 
      </id>
      <version name="version" type="integer" unsaved-value="null"/>
      <map name="name" lazy="true" cascade="save-update" fetch="join"> 
         <key column="textid" property-ref="categoryNameId"/>
         <index column="langcode" type="string"/>
         <one-to-many class="com.reservit.plannit.data.bo.common.TextBO"/>
      </map>
</class>

Code between sessionFactory.openSession() and session.close():

Code:

getSession().saveOrUpdate(category);

Full stack trace of any exception that occurs:

Code:

java.lang.NullPointerException
   at org.hibernate.engine.EntityEntry.getLoadedValue(EntityEntry.java:141)
   at org.hibernate.type.CollectionType.getKeyOfOwner(CollectionType.java:269)
   at org.hibernate.engine.Collections.updateReachableCollection(Collections.java:105)
   at org.hibernate.event.def.FlushVisitor.processCollection(FlushVisitor.java:37)
   at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:81)
   at org.hibernate.event.def.AbstractVisitor.processValues(AbstractVisitor.java:43)
   at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:197)
   at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:190)
   at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:70)
   at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:26)
   at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:669)
   at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:293)
   at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:86)
   at com.reservit.plannit.data.services.hibernate.HibernateManager.saveOrUpdateInNewTx(HibernateManager.java:340)
   at com.reservit.plannit.data.services.hibernate.CategoryManagerImpl.saveCategory(CategoryManagerImpl.java:138)
   at com.reservit.plannit.data.services.hibernate.CategoryManagerImpl.saveCategory(CategoryManagerImpl.java:116)
   at com.reservit.plannit.test.manager.CategoryManagerTest.save(CategoryManagerTest.java:92)
   at com.reservit.plannit.test.manager.CategoryManagerTest.testUpdate(CategoryManagerTest.java:82)
   at com.reservit.plannit.test.manager.CategoryManagerTest.main(CategoryManagerTest.java:197)

Name and version of the database you are using:
hsqldb

Debug level Hibernate log excerpt:

Code:

   public Object getLoadedValue(String propertyName) {
      return loadedState[
         ( (UniqueKeyLoadable) persister ).getPropertyIndex(propertyName)
      ];
   }

in debbug, i can pointed out that loadedState is null

This exception happend when i update a category object. Creation of a category with the same method dont failed.

The particularity of this object is that Category reference a TextBO object which use a composite key of a sequence number generated by my applicaiton when recquired and an ISO language code set by my application.

Please can somone tell me what have i done wrong?

MARTINO · **Joined:** Thu Jun 24, 2004 4:06 am **Posts:** 9

still need help please

MARTINO · **Joined:** Thu Jun 24, 2004 4:06 am **Posts:** 9

i change my code to avoid using a composite key and the problem still happens.

i downgrade to hibernate beta 3 and 4b and still the same stacktrace.

is it a bug?

MARTINO · **Joined:** Thu Jun 24, 2004 4:06 am **Posts:** 9

I think this problem is a bug when using property-ref in a many-to-one mapping.

Code:

      <map name="name" lazy="true" cascade="save-update" fetch="select">
         <key column="textid" property-ref="nameId"/>
         <index column="langcode" type="string"/>
         <one-to-many class="com.reservit.plannit.data.bo.common.TextBO"/>
      </map>

if i change this mapping using classic column

Code:

<map name="name" lazy="true" cascade="save-update">
         <key column="textid" foreign-key="nameid" />
         <index column="langcode" type="string"/>
         <one-to-many class="com.reservit.plannit.data.bo.common.TextBO"/>
      </map>

all runs well

MARTINO · **Joined:** Thu Jun 24, 2004 4:06 am **Posts:** 9

using a foreign key was not a good idea: the inserted id in text table use the category id and not those setting in textBO object.

I must use a property ref to have good id inserted in DB
can some one from Hibernate team tell me what to do to avoid this nullpointer exception

dyn · **Joined:** Wed Aug 27, 2003 7:53 am **Posts:** 27

I had hit the same problem. I seriously think it's a bug. Reported here. Hope the hibernate team will find out what's this soon.