I have issues with <one-to-one> mapping

Classname.hbm.xml:

<hibernate-mapping>
<class catalog="DBName1" name = "org.work.Classname" table = "classname"
<id name="abc" type="java.lang.String">
<column name="abc" not-null="true" unique="true" />
</id>
<one-to-one class="org.webWork.WClassname" name="wabc" fetch="join" lazy="false" property-ref="wabc" />
.
.
.
.
</class>
</hibernate-mapping>


I get the following exception:

java.lang.NullPointerException
at org.hibernate.persister.entity.AbstractEntityPersister.loadByUniqueKey(AbstractEntityPersister.java:1645)
at org.hibernate.type.EntityType.loadByUniqueKey(EntityType.java:608)
at org.hibernate.type.EntityType.resolve(EntityType.java:382)
at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:116)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:854)
at org.hibernate.loader.Loader.doQuery(Loader.java:729)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
at org.hibernate.loader.Loader.doList(Loader.java:2220)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
at org.hibernate.loader.Loader.list(Loader.java:2099)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)

Hi!

Please see the following issue which maybe describe the same problem as you see: https://hibernate.onjira.com/browse/HHH-2624

There is as workaround described at https://forums.hibernate.org/viewtopic.php?f=1&t=969331


-Kaj :)