problem with Hibernate interceptor

[Karthik Guru]

I have a simple Hibernate Interceptor where I override the methods

onFlushDirty and
onSave

In this method i set the last modified date / last modified by / created date/created by on the POJOs. I see that Hibernate does call this interceptor when i do HibernateTemplate.save / HibernateTemplate.update.

The POJO's 'lastmodifieddate' and the 'lastmodifiedby' fields do get updated in the interceptor and i return 'true' from onFlushDirty and onSave methods.

But when hibernate subsequently flushes the SQL to the DB, these fields turn out to be null( The update SQL trace shows null as the value for the 'lastmodifieddate' and the 'lastmodifiedby' fields)

I also observed that the object being supplied to the interceptor is same as the one supplied to HibernateTemplate.save / update.

Any idea what might be going wrong here?