Hi ,

Please help me with this requirement in Audit Logging.

I'm using life cycle methods of interceptor for logging.

I'm using Spring Transaction and the method i'm invoking to persist the entity object is getHibernateTemplate().merge().

Before calling this method, i need to set a property to the entity object. But this property is an unmapped property. i.e.; it’s not present in hbm file or in table.[This is possible because I’m extending the data class from my class which has this property and getters/setters for this property.]

When the life cycle methods are triggered, this unmapped property value, the old values and new values, I want to insert to my Audit Table.

I have implemented Interceptor and the life cycle methods onSave, FlushDirty, findDirty

The issue here is the value of the unmapped property which I’m setting is becoming null in the entity object passed to OnSave method.

Is there any work around for this?

Thanks In Advance
Chandrasekhar

Yes: don't use merge. When merge is given a transient version of a persistent object, it loads the persistent version in order to do the merge. This is the version that your interceptor is seeing. If you merged it yourself, or even better, work only with peristent or detached objects (and never transient versions of peristent objects), and then call update/saveOrUpdate, then the object that your interceptor sees will be the one with the unmapped property.

I think.

Hi,

Thanks a lot the reply.

When I tried using saveOrUpdate, in the Interceptor call back

onFlushDirty method

[ onFlushDirty(Object entity, Serializable id, Object[]

newValues, Object[] oldValues, String[] properties, Type[] types) ],

the oldValues Object array is coming null.

But i need old values also for logging.

Is there any other alternative.

Please clarify another doubt,when is the findDirty call method invoked?

Thanks In Advance

Hmm. I'm not sure about the ins and outs of interceptors. Would switching to events be feasible? There's a MergeEventListener that's bound to give you exactly the functionality you need...