Hello!

I have a table/entity where the date column is unique. equals() and hash() methods always check for the not-null date.

However, when I want to overwrite data for an existing date, Hibernate tried to add a new row which fails due to the unique constrain on the column.

What's the most common approach to Update a row for an existing entry for this date and to add a new row if the date does not exist?

Thanks!

Tobias

Is it possible this only works for primary keys?

In my case a date column as a primary key would be a bad idea.

Also manually checking with a query and deciding whether to save or update is a bit disappointing when using a framework that is supposed to save time.

I have found similiar questions on the forum but no proper solution....

Regarding the last post in:

viewtopic.php?f=1&t=1008658&p=2439375&hilit=saveorupdate+primary#p2439375

I would say: Why an annotation? hash and equals show be sufficient!