i was curious,
if i want to delete one object..
is one method better than the other in terms of performance?

I believe they are the same, but not 100% sure. However, another factor to consider is that delete(String) essentially defeats optimistic locking.

Thank you very much for your comment,

can you please elaborate about the optimistic locking.

btw, is the same number of sql statements are being executed?

Optimistic locking is covered in the reference manual:

http://www.hibernate.org/hib_docs/refer ... optimistic

In this case, it prevents you from "accidentally" deleting an object that has been changed in another transaction. Depending on your use case, it may or may not be a concern.

I'm not sure if this is correct. As far as I am aware delete( String ) is roughly the same as doing



So the locking check will be done in the delete as the object has been loaded.

To answer the original question, delete( Object ) will generally be faster as it does not query the database.[/code]

But the point is that the entity was just loaded; the versioning data will always be exactly what it is in the database at this time, not the versioning data as of the time the user read the object(s) initially.

If this is a concern, then the bulk delete approach will not work as it essentially circumvents the optimistic lock.