Hi,

I am getting below exception inconsistently when we trying to persist multiple records at a single transaction.

Caused by: org.hibernate.HibernateException: identifier of an instance of Test was altered from 7 to 79
at org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:85)
at org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:190)
at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:147)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99)
at org.hibernate.event.def.DefaultAutoFlushEventListener.onAutoFlush(DefaultAutoFlushEventListener.java:58)
at org.hibernate.impl.SessionImpl.autoFlushIfRequired(SessionImpl.java:1185)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1261)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)

I have pasted the hbm files below. Can anyone please help me to get out of this issue.

1.Test.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="Test"
abstract="true">

<!--Id-->
<id name="testId" column="TEST_ID" type="long">
<generator class="native" />
</id>

<!--Properties-->
<property column="PARENT" name="parentName" type="string" />
</class>
</hibernate-mapping>

2. SubTest.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<union-subclass name="SubTest"
extends="Test"
table="Test" >

<!--Mapping b/w other tables-->
<set name="testSet" inverse="true" cascade="save-update, delete-orphan">
<key column="TEST_ID" />
<one-to-many class="TestData" />
</set>

</union-subclass>
</hibernate-mapping>

3. ParentTestData.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">


<hibernate-mapping>

<class name="ParentTestData"
abstract="true">

<!--Id-->
<id name="parentTestId" column="PATRENT_VALUE_ID" type="long">
<generator class="native"/>
</id>

<!--Properties-->
<property name="keyString" column="KEY_STRING" type="string"/>

</class>
</hibernate-mapping>

4. TestData.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">


<hibernate-mapping>

<union-subclass name="TestData"
extends="ParentTestData"
table="TEST_VALUE">


<!--Mapping b/w other tables-->
<many-to-one name="myTest" column="TEST_ID" not-null="true"/>

</union-subclass>
</hibernate-mapping>

Regards,
Riyas[code][/code]