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hibernate - timestamp versioning

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diaben

Post subject: hibernate - timestamp versioning

Posted: Tue Aug 15, 2006 8:15 am

Newbie

Joined: Mon Aug 14, 2006 3:51 pm
Posts: 2

Hibernate version: 3.1

Mapping documents:
using this works:
<hibernate-mapping package="packagename.valueholder">
<class name="Gender" table="GENDER" optimistic-lock="version">
<id name="id" type="java.lang.String">
<column name="ID" precision="10" scale="0" />
<generator class="sequence">
<param name="sequence">gender_seq</param>
</generator>
</id>
<version name="version" column="VERSION" type="int"/>

but not this:
<hibernate-mapping package="packagename.valueholder">
<class name="Gender" table="GENDER" optimistic-lock="version">
<id name="id" type="java.lang.String">
<column name="ID" precision="10" scale="0" />
<generator class="sequence">
<param name="sequence">gender_seq</param>
</generator>
</id>
<version name="lastupdated" column="LASTUPDATED" type="Timestamp"/>

Full stack trace of any exception that occurs:

org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [data.Gender#<null>]
at org.hibernate.event.def.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:218)
at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:102)
at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:54)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:535)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:539)

Name and version of the database you are using: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0

Problem description: When configuring the hbm.xml for our tables -
if we specify version type is int then the table update does not generate an exception/ if we specify version type is timestamp then we get the StaleObjectStateException.

Thanks for any suggestions! Diane

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