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jblalanne
 Post subject: composite-id, sequence and merge problem
PostPosted: Mon Jan 21, 2008 6:11 am 
Newbie

Joined: Fri Jan 18, 2008 12:34 pm
Posts: 9
Hello,

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 :
Code:
   <!-- 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 ? :
Code:
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)
Code:
Code:
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jblalanne
 Post subject:
PostPosted: Tue Jan 22, 2008 4:49 am 
Newbie

Joined: Fri Jan 18, 2008 12:34 pm
Posts: 9
None else got this problem ? Seems very strange because the case must be very comon ?
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jblalanne
 Post subject:
PostPosted: Thu Feb 07, 2008 10:31 am 
Newbie

Joined: Fri Jan 18, 2008 12:34 pm
Posts: 9
I have tested it with the 3.2.6ga with the same result.

Does nobody got the same problem ?
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ivan2010
 Post subject: Hibernate cascade with composite key problem
PostPosted: Fri Feb 08, 2008 2:50 pm 
Newbie

Joined: Fri Feb 08, 2008 2:41 pm
Posts: 18
I have the same isue using a mysql database:

<class table="orders" name="hakim.order.model.Order">
<id name="id" column="order_id">
<generator class="native"/>
</id>
<many-to-one column="supplier_id" class="hakim.model.Supplier" not-null="true" name="supplier"/>
<set inverse="true" cascade="all-delete-orphan" name="frames">
<key column="order_id"/>
<one-to-many class="hakim.order.model.OrderFrame"/>
</set>

</class>

<class table="order_frame" name="hakim.order.model.OrderFrame">
<composite-id name="id" class="hakim.order.model.id.OrderFrameID">
<key-many-to-one name="order" class="hakim.order.model.Order">
<column name="order_id" not-null="true"/>
</key-many-to-one>
<key-many-to-one name="frame" class="hakim.model.Frame">
<column name="frame_id" not-null="true"/>
</key-many-to-one>
</composite-id>
<property name="colorCode" column="color_code"/>
<property name="quantity"/>
</class>

Does any one has an answer to this? I use the saveOrUpdate. When removing the cascade everthing works as normal.

The error happens after the following sql:
/* insert hakim.order.model.Order */
/* get current state hakim.order.model.OrderFrame */
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jblalanne
 Post subject:
PostPosted: Mon Feb 11, 2008 4:40 am 
Newbie

Joined: Fri Jan 18, 2008 12:34 pm
Posts: 9
I have opened an issue in JIRA (http://opensource.atlassian.com/project ... e/HHH-3079 ) which seems to have been taken into account by the development team.
So I don't think there is a workaround for this issue.

You can vote for it if you're interested about this issue.
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crista_drg
 Post subject:
PostPosted: Fri Mar 28, 2008 3:32 am 
Newbie

Joined: Thu Apr 26, 2007 9:42 am
Posts: 14
Hi,
I have the same problem and I added a comment on your post on Jira.
Regards, Cristian.
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