Hi,

I have a contract domain object. The contract object contains SETs of contract Line items and other various properties that my app uses.

At present, calculating the contract cost is done via a call to a getTotalContractCost() method. This is transient method. The method checks the dependent objects as necessary. This works well.

Now the users want to store the contract cost in the db.

I need advice on how to accomplish this.

What i would like to do (i think) is that every time Hibernate detects that the object is dirty to also update the contract cost field. That way i do not have to worry about what fields were changed in the contract.

Is this possible?

Thanks

R

If you are using JPA annotations you should be able to hang the annotations off the accessor performing the business logic. There should also be a way to configure property v/s accessor usage in Hibernate's HBM files if you are using that.

This will not track the dirty state of the object for you, but will allow you to updated the value in the database with a call to persist/merge/saveOrupdate when the state changes. There is no way to have Hibernate monitor the dirty status of an object as far as I know.

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Tim