Hi friends,

Plz help,
I am getting this exception during save in Hibernate.

Exception in thread "main" org.hibernate.HibernateException: identifier of an instance of EmplyeeDetails was altered from 2 to 0

My class name is "EmplyeeDetails"
Thanks,

Hi..
you are not giving enough info..
maybe you can paste the mapping file..
and the POJO involved..

but neverthless i try to explain what happen..

you get this error because you are trying to update the Primary Key of the Object..which is cannot be done..

if you do it purposely.. i tell u as far as i know.. Primary Key cannot be updated..

if you don't know what happen.. why hibernate try to update the primary key..
i have a couple of explanation..
1. You use primitive type (int,long etc) type, not Object (Integer,Long)as a Primary Key .. inside the pojo.. use object type instead (primitive type is not nullable, if not initialized the primitive type value will be 0)

2. If this case occur when you are trying to insert a record.. then the problem lies in your ID generation...



hope this helps,

give more info .. so we'll be sure whats wrong

elanhakim

hi

HI i am sending pojo class and hbm.xml

Exception
==============
Hibernate: select max(id) from table1
Hibernate: select max(id) from table2
Exception in thread "main" org.hibernate.HibernateException: identifier of an instance of customeDetails was altered from 2 to 0
at org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:51)
at org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:150)
at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:106)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:195)
at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:76)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:26)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:985)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:333)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:106)
at Main.main(Main.java:29)
========================================
pojo class

import java.util.*;
public class customeDetails
{
private Set stories ;
public customeDetails()
{
}
private Integer id =0;
public void setId(Integer id)
{
id = id ;
}
public Integer getId()
{
return id;
}
}
==============================================================================================
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="customeDetails" table="table1">
<id name="id" unsaved-value="0" >
<generator class="increment" />
</id>
<set name="stories" cascade="all" inverse="true">
<key column="parent_id"/>
<one-to-many class="TABLE2"/>
</set>
</class>

<class name="TABLE2" table="table2">
<id name="id" unsaved-value="0">
<generator class="increment"/>
</id>
<property name="test" type="string"/>
<property name="results" type="string"/>
<many-to-one name="parent" column="parent_id" not-null="true"/>
</class>
</hibernate-mapping>

thanks.

Hi

Please could you look at this following link.I think,it would be helpful for you.

http://jira.codehaus.org/browse/GRAILS-225

Thanks
Raj

Hi

Please could you look at this following link.I think,it would be helpful for you.

http://jira.codehaus.org/browse/GRAILS-225

Thanks
Raj

Hi

remove unsaved-value


Amila
(Don't forget to rate if helps)

Hi,

I remove unsaved-value, but it throw same exception .
give some more idea.
Thanks in adv.

Hi
send your code which raised the error


Amila

Thanks friends,
Problem solved.
once again thanks 4 Suggestion .