[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-3079) composite-id, sequence and merge call result in a NullPointerException
Jean-Baptiste Lalanne (JIRA)
noreply at atlassian.com
Fri Feb 8 03:59:33 EST 2008
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-3079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_29482 ]
Jean-Baptiste Lalanne commented on HHH-3079:
--------------------------------------------
I got no answer nor comment from people in charge and the issue has not been assigned.
So I got no way to know if the issue has been reviewed and considered to be a real one by the team.
Anyway i'm happy to finally get an answer from you.
> composite-id, sequence and merge call result in a NullPointerException
> ----------------------------------------------------------------------
>
> Key: HHH-3079
> URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3079
> Project: Hibernate3
> Issue Type: Bug
> Affects Versions: 3.2.5
> Environment: Oracle 10/XE
> Windows XP
> JDK 1.5.0
> Reporter: Jean-Baptiste Lalanne
> Attachments: oneup-hibernate-test.zip
>
>
> I got problem during the migration process from HB 2 to 3.2.5.
> We use Oracle as DB, problem happens when calling merge on a persistent entity A. This instance A has a relation (one-to-many) to another entity B, this instance is transient and has a generated id (from an oracle sequence), it has also a one-to-many relation to a third entity C. This last one has a composite id that includes a reverse one-to-many link to B.
> Here comes mapping definition, see attached eclipse project sample that runs with an Oracle XE :
> <!-- entity A -->
> <class name="EventImpl" table="EV_EVENT">
>
> <id column="EVT_ID" name="id" type="java.lang.Long">
> <generator class="sequence">
> <param name="sequence">SEQ_EV_ID</param>
> </generator>
> </id>
> </class>
> <!-- entity B -->
> <class name="ScheduleImpl" table="EV_SCHEDULE">
> <!-- primary key -->
> <id column="SCH_ID" name="id" type="java.lang.Long">
> <generator class="sequence">
> <param name="sequence">SEQ_EV_ID</param>
> </generator>
> </id>
>
> <property column="LAB_ID" name="labId" not-null="true" type="java.lang.Long"/>
> <set name="scheduleDetails" cascade="all-delete-orphan" lazy="false" inverse="true">
> <key column="SCH_ID"/>
> <one-to-many class="ScheduleDetailImpl"/>
> </set>
> </class>
> <!-- entity C -->
> <class name="ScheduleDetailImpl" table="EV_SCHEDULE_DETAIL">
> <!-- Cache directive -->
> <cache usage="read-write" />
>
> <!-- Composite primary key -->
> <composite-id name="id" class="ScheduleDetailImplPK">
> <key-many-to-one
> class="com.cegedim.oneup.events.srv.domain.schedule.impl.ScheduleImpl"
> name="schedule"
> column="SCH_ID"
> />
> <key-property
> column="LINE_RNK"
> name="lineRnk"
> type="java.lang.Long"
> />
> </composite-id>
>
> </class>
> When calling merge on A i got this stacktrace, sounds like a bad propagation of the generated B PK during cascading. If i call saveOrUpdate all works fine, the HB2 code was calling the saveOrUpdateCopy and it worked fine. Does anybody got the same issue ? :
> Exception in thread "main" java.lang.NullPointerException
> at org.hibernate.type.AbstractType.getHashCode(AbstractType.java:112)
> at org.hibernate.type.AbstractType.getHashCode(AbstractType.java:120)
> at org.hibernate.type.EntityType.getHashCode(EntityType.java:279)
> at org.hibernate.type.ComponentType.getHashCode(ComponentType.java:189)
> at org.hibernate.engine.EntityKey.generateHashCode(EntityKey.java:104)
> at org.hibernate.engine.EntityKey.<init>(EntityKey.java:48)
> at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:100)
> at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:687)
> at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:669)
> at org.hibernate.engine.CascadingAction$6.cascade(CascadingAction.java:245)
> at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:268)
> at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:216)
> at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
> at org.hibernate.engine.Cascade.cascadeCollectionElements(Cascade.java:296)
> at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java:242)
> at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:219)
> at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
> at org.hibernate.engine.Cascade.cascade(Cascade.java:130)
> at org.hibernate.event.def.AbstractSaveEventListener.cascadeAfterSave(AbstractSaveEventListener.java:456)
> at org.hibernate.event.def.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:194)
> at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:123)
> at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:687)
> at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:669)
> at org.hibernate.engine.CascadingAction$6.cascade(CascadingAction.java:245)
> at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:268)
> at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:216)
> at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:169)
> at org.hibernate.engine.Cascade.cascade(Cascade.java:130)
> at org.hibernate.event.def.DefaultMergeEventListener.cascadeOnMerge(DefaultMergeEventListener.java:407)
> at org.hibernate.event.def.DefaultMergeEventListener.entityIsPersistent(DefaultMergeEventListener.java:152)
> at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:126)
> at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:53)
> at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:677)
> at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:661)
> at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:665)
> at com.cegedim.oneup.events.srv.domain.Test.testMergeScheduleDetails(Test.java:67)
> at com.cegedim.oneup.events.srv.domain.Test.run(Test.java:83)
> at com.cegedim.oneup.events.srv.domain.Test.main(Test.java:126)
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