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Hey guys
I am getting the infamous error could not initialize proxy - the owning Session was closed
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed When trying to update the persistent state of a detached instance .
So here's what i do
1. Open session 1 query for an object in my case look for a HumanImpl
which is a subclass of PartyImpl ( check the mappings )
2. So i get a single object and close the session 1
3. I do changes to this object changed something in it
4. Now i want to update this object i basically invoke this command.
open session 2 and
session.saveOrUpdateCopy( object );
5. Now this throws a Lazy initialization Exception when it start to work with at ObjectAssociationImpl#8a818b970805c715010805fc9a750005
( check the trace ).
What am i doing wrong
Depth of that object
PartyImpl
|
|-------- HumanImpl
|---------------|
|-------------- |--- List of addresses
|
|--------Set of Object Associations
Thank you
Hibernate version:3.0.5
Mapping documents:
Party.hbm.xml
<class name="PartyImpl" polymorphism="implicit" proxy="PartyImpl" table="party">
<id column="party_id" name="partyID" type="string" unsaved-value="null">
<generator class="uuid.hex"/>
</id>
<discriminator column="discriminator_type" type="string"/>
<many-to-one class="ObjectTypeImpl" column="object_type_id" insert="true" name="objectType" update="true"/>
<property column="note" insert="true" name="note" type="string" update="true"/>
<set cascade="all" inverse="true" lazy="true" name="addressList" outer-join="false" table="address">
<key column="party_id"/>
<one-to-many class="AddressImpl"/>
</set>
<bag batch-size="100" cascade="all" lazy="true" name="associatedObjects" outer-join="false">
<key column="master_object_id"/>
<one-to-many class="ObjectAssociationImpl"/>
</bag>
<bag batch-size="100" cascade="all" lazy="true" name="associations" outer-join="false">
<key column="associated_object_id"/>
<one-to-many class="ObjectAssociationImpl"/>
</bag>
<subclass discriminator-value="OT4" name="HumanImpl" proxy="HumanImpl">
<property column="name_human_first" insert="true" name="firstName" type="string" update="true">
<meta attribute="finder">findByFirstName</meta>
</property>
<property column="name_human_middle" insert="true" name="middleName" type="string" update="true">
<meta attribute="finder">findByMiddleName</meta>
</property>
<property column="name_human_last" insert="true" name="lastName" type="string" update="true">
<meta attribute="field-description">The last name of the person.</meta>
<meta attribute="finder">findByLastName</meta>
</property>
<property column="name_human_prefix" insert="true" name="namePrefix" type="string" update="true"/>
<property column="name_human_suffix" insert="true" name="nameSuffix" type="string" update="true"/>
<property column="description" insert="true" name="description" type="string" update="true"/>
<property column="job_title" insert="true" name="title" type="string" update="true"/>
</subclass>
ObjectAssociation.hbm.xml
<class name="ObjectAssociationImpl" polymorphism="implicit" proxy="ObjectAssociationImpl"
table="object_association">
<id column="object_association_id" name="objectAssociationID" type="string" unsaved-value="null">
<generator class="uuid.hex"/>
</id>
<many-to-one class="ObjectTypeImpl" column="object_type_id" name="objectType"/>
<any id-type="string" name="masterObject">
<column name="master_object_class"/>
<column name="master_object_id"/>
</any>
<any id-type="string" name="associatedObject">
<column name="associated_object_class"/>
<column name="associated_object_id"/>
</any>
</class>
Code between sessionFactory.openSession() and session.close():
logger.debug( "SAVING COPY:" + object.toString() );
session = getSession();
trans = session.beginTransaction();
session.saveOrUpdateCopy( object );
trans.commit();
Session closed by the HTTP filter
Full stack trace of any exception that occurs:
2005-12-07 11:10:49,641 [http-8080-Processor25] DEBUG org.hibernate.engine.Cascades$5.cascade: 153 - cascading to saveOrUpdate: ObjectAssociationImpl
2005-12-07 11:10:49,642 [http-8080-Processor25] DEBUG org.hibernate.engine.Cascades$24.isUnsaved: 575 - id unsaved-value strategy NULL
2005-12-07 11:10:49,646 [http-8080-Processor25] DEBUG org.hibernate.event.def.AbstractSaveEventListener.getEntityState: 414 - detached instance of: ObjectAssociationImpl
2005-12-07 11:10:49,648 [http-8080-Processor25] DEBUG org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached: 200 - updating detached instance
2005-12-07 11:10:49,649 [http-8080-Processor25] DEBUG org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate: 246 - updating [ObjectAssociationImpl#8a818b970805c715010805fc9a750005]
2005-12-07 11:10:49,651 [http-8080-Processor25] ERROR org.hibernate.LazyInitializationException.<init>: 19 - could not initialize proxy - the owning Session was closed
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:53)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:84)
at org.hibernate.impl.SessionImpl.bestGuessEntityName(SessionImpl.java:1436)
at org.hibernate.type.AnyType.getPropertyValues(AnyType.java:246)
at org.hibernate.event.def.AbstractVisitor.processComponent(AbstractVisitor.java:85)
at org.hibernate.event.def.ReattachVisitor.processComponent(ReattachVisitor.java:45)
at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:110)
at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:64)
at org.hibernate.event.def.AbstractVisitor.processEntityPropertyValues(AbstractVisitor.java:58)
at org.hibernate.event.def.AbstractVisitor.process(AbstractVisitor.java:129)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:267)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:214)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:91)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:69)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:468)
at org.hibernate.engine.Cascades$5.cascade(Cascades.java:154)
at org.hibernate.engine.Cascades.cascadeAssociation(Cascades.java:771)
at org.hibernate.engine.Cascades.cascade(Cascades.java:720)
at org.hibernate.engine.Cascades.cascadeCollection(Cascades.java:895)
at org.hibernate.engine.Cascades.cascadeAssociation(Cascades.java:792)
at org.hibernate.engine.Cascades.cascade(Cascades.java:720)
at org.hibernate.engine.Cascades.cascade(Cascades.java:847)
at org.hibernate.engine.Cascades.cascade(Cascades.java:819)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.cascadeOnUpdate(DefaultSaveOrUpdateEventListener.java:316)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:299)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:214)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:91)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:69)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:468)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:463)
Name and version of the database you are using: MySQL 5.0
The generated SQL (show_sql=true):
Debug level Hibernate log excerpt:
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