posted 15 years ago
Hi,
I am taking data from one table and saving it on other, both the database are exact replica of each other.
So I am working with two hibernate sessions, and everything is working fine.
But when it comes to collection it throws this exception:
org.hibernate.HibernateException: Illegal attempt to associate a collection with two open sessions
at org.hibernate.collection.AbstractPersistentCollection.setCurrentSession(AbstractPersistentCollection.java:410)
at org.hibernate.event.def.WrapVisitor.processCollection(WrapVisitor.java:44)
at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:101)
at org.hibernate.event.def.WrapVisitor.processValue(WrapVisitor.java:98)
at org.hibernate.event.def.AbstractVisitor.processEntityPropertyValues(AbstractVisitor.java:55)
at org.hibernate.event.def.AbstractSaveEventListener.visitCollectionsBeforeSave(AbstractSaveEventListener.java:333)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:250)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:167)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:114)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:530)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:518)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:514)
at dms2dms.controller.DMS2DMSController.testCopy(DMS2DMSController.java:76)
at dms2dms.controller.DMS2DMSController.main(DMS2DMSController.java:25)
mapping file looks like this....
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="dms2dms.businessobject.DMSTitle" table="TITLE">
<id name="titleID" column="title_id" type="java.lang.Long">
<generator class="assigned" />
</id>
<property name="titleNumber" column="title_number" type="string"/>
<property name="authorisedBy" column="authorisation" type="string"/>
<property name="dateAuthorised" column="date_authorised" type="java.util.Date"/>
<many-to-one name="dmsCase" class="dms2dms.businessobject.DMSCase" column="case_id" cascade="all"/>
<many-to-one name="dmsOverlay" class="dms2dms.businessobject.DMSOverlay" column="overlay_id" cascade="all"/>
<set name="dmsMultiPart" table="multi_part" cascade="all">
<key column="title_id"></key>
<one-to-many class="dms2dms.businessobject.DMSMultiPart"/>
</set>
</class>
</hibernate-mapping>