Guys,
I am getting org.hibernate.id.IdentifierGenerationException:ids for this class must be manually assigned before calling save():
at org.hibernate.id.Assigned.generate(Assigned.java:32)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:85)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:184)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:173)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:96)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:69)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:468)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:463)


Any inputs??


Thanks

You did not mention what you are trying to do. There is little to be said without that.

I am trying to save the data in my schema

can you provide some of the mapping and the code where you actually call Session.save()?

localSession.saveOrUpdate(vehicleData);

Mapping File:
<hibernate-mapping>
<class name="com.EB.VEHICLETYPE" table="VEHICLE_TYPE" >
<id name="vehicleName" type="java.lang.String">
<column name="VEHICLE_NAME" length="60" />

</id>
<property name="vehicleType" type="java.lang.String">
<column name="VEHICLE_TYPE" length="105" />
</property>
<property name="vehicleDetails" type="java.lang.String">
<column name="VEHICLE_DETAILS length="90" not-null="true" />
</property>
</class>
</hibernate-mapping>

org.hibernate.id.IdentifierGenerationException: ids for this class must be manually assigned before calling save(): com.vehicle.VehicleType
at org.hibernate.id.Assigned.generate(Assigned.java:32)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:85)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:184)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:173)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:96)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:69)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:468)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:463)

[quote]com.microsoft.sqlserver.jdbc.SQLServerException: Cannot insert explicit value for identity column in table 'tst_main' when IDENTITY_INSERT is set to OFF.

The class' identifier has no generator, so you have to assign one before saving. Did you check that property "vehicleName" does not return null right before Session.save()?
Note that once you assign the vehicleName and save the instance you will not be able to change that property.

Guys,

Need help with the following exception:
19328 [main] ERROR org.hibernate.event.def.AbstractFlushingEventListener - Could not synchronize database state with session
org.hibernate.HibernateException: Unexpected row count: 0 expected: 1
at org.hibernate.jdbc.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:32)
at org.hibernate.persister.entity.BasicEntityPersister.update(BasicEntityPersister.java:1982)
at org.hibernate.persister.entity.BasicEntityPersister.updateOrInsert(BasicEntityPersister.java:1909)
at org.hibernate.persister.entity.BasicEntityPersister.update(BasicEntityPersister.java:2149)
at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:75)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:239)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:223)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:137)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:274)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:730)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:324)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:86)
at com.ihg.croservice.eis.db.HotelFactory.setBrand(HotelFactory.java:593)
at com.ihg.croservice.bo.EventManager.testSetBrand(EventManager.java:486)
at com.ihg.croservice.bo.EventManager.main(EventManager.java:129)
org.hibernate.HibernateException: Unexpected row count: 0 expected: 1
at org.hibernate.jdbc.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:32)
at org.hibernate.persister.entity.BasicEntityPersister.update(BasicEntityPersister.java:1982)
at org.hibernate.persister.entity.BasicEntityPersister.updateOrInsert(BasicEntityPersister.java:1909)
at org.hibernate.persister.entity.BasicEntityPersister.update(BasicEntityPersister.java:2149)
at org.hibernate.action.EntityUpdateAction.execute(EntityUpdateAction.java:75)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:239)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:223)
at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:137)
at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:274)
at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:730)
at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:324)
at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:86)


Thanks

Set hibernate property "show_sql" to true. A lot of SQL will be output to the console, and there should be an SQL query (an update?) right before that exception. If that is an update query make sure you did not change vehicleName (as I mentioned previously). If you did, and if this must be possible, you will have to change the primary key to an auto-generated value. Otherwise... actually, I am not sure what else could cause this.